Panel Guide
Selecting the right piece of plywood for your project does not have to be as complex as the grading rules. This guide to the grades of plywood is meant to help you get past the uncertainty by giving you the knowledge of what the grades allow and how to do apples to apples comparisons of what you see.
Navigating Plywood Grains
Follow our guide:
In the Pacific Northwest, our most common sanded and framing plywood are:
- Sanded Plywood
- Structural Plywood
- Oriented Strand Board (OSB)
- Every panel has different characteristics for strength and appearance, but they are all graded on the same rules from the American Plywood Association (APA). The grades, for all that they do, are not much more than a way of telling the user what kind of quality they are buying. The higher the grade, the better the panel.
Sanded Plywood Standards
Understanding the intricate details of sanded plywood standards can be challenging, but with the appropriate guidance, it’s a hurdle easily overcome. The guide below serves as your one-stop resource for navigating the diverse landscape of panel grades, ranging from the premium A-A to the versatile B-D. We delve into industry standards across critical categories, empowering you to make informed decisions every step of the way.
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exterior or Exposure #1
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- A
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- A
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- 18 boat or sled repairs parallel to grain
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- 18 boat or sled repairs parallel to grain
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 1/4″
- 11/32″
- 3/8″
- 15/32″
- 1/2″
- 19/32″
- 5/8″
- 23/32″
- 3/4″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- Where both faces will be visible
- Cabinets and built in furniture
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Marine Grade
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
- Yes
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exterior or Exposure #1
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- A
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- B
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- 18 boat or sled repairs parallel to grain
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Shim, sled, or router repair with small knots permitted
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 1/4″
- 11/32″
- 3/8″
- 15/32″
- 1/2″
- 19/32″
- 5/8″
- 23/32″
- 3/4″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- One visible side with strength still important
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Marine Grade
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
- Yes
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exterior
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- A
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- C
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- 18 boat or sled repairs parallel to grain
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Tight knot to 1 1/2″ with knotholes less than 1″, sanding defects allowed
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 1/4″
- 9/32″
- 11/32″
- 3/8″
- 15/32″
- 1/2″
- 19/32″
- 5/8″
- 23/32″
- 3/4″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- One visible side important such as soffits or interior applications
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Marine Grade
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
- Yes
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exposure #1
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- A
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- D
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- 18 boat or sled repairs parallel to grain
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Knots and knotholes to 2 1/2″ allowed, limited splits permitted.
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 1/4″
- 11/32″
- 3/8″
- 15/32″
- 1/2″
- 19/32″
- 5/8″
- 23/32″
- 3/4″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- One visible side important such as paneling, built-ins, or shelving
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Marine Grade
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
- Yes
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exterior or Exposure #1
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- B
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- B
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Shim, sled, or router repair with small knots permitted
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Shim, sled, or router repair with small knots permitted
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 1/4″
- 11/32″
- 3/8″
- 15/32″
- 1/2″
- 19/32″
- 5/8″
- 23/32″
- 3/4″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- Utility panel with two solid sides
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Marine Grade
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
- Yes
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exterior or Exposure #1
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- B
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- C
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Shim, sled, or router repair with small knots permitted
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Tight knot to 1 1/2″ with knotholes less than 1″, sanding defects allowed
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 1/4″
- 9/32″
- 11/32″
- 3/8″
- 15/32″
- 1/2″
- 19/32″
- 5/8″
- 23/32″
- 3/4″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- Utility panel for containers and truck linings or base for exterior coatings
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Marine Grade
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
- Yes
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exterior or Exposure #1
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- B
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- D
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Shim, sled, or router repair with small knots permitted
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Knots and knotholes to 2 1/2″ allowed, limited splits permitted.
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 1/4″
- 11/32″
- 3/8″
- 15/32″
- 1/2″
- 19/32″
- 5/8″
- 23/32″
- 3/4″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- Utility panel for backing or base shelving
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Marine Grade
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
Marine grade adhesives can be substituted for many sanded panels, but cost limits the widespread application and availability of these panels.
- Yes
Panel Size
Every panel thickness has a required number of veneer layers based on the grade. The grade will also determine if the panel allows for voids in the core or if the voids must be filled to meet impact resistance in flooring or other high load applications.This chart provides a clear overview of the minimum number of plies and layers required for various plywood panel sizes.
Performance Rated Panel Standards
Performance Rated Panels (PRPs) have revolutionized the construction industry, offering a standardized and reliable way to select plywood and oriented strand board (OSB) sheathing, siding, and subflooring panels. This guide delves into the intricacies of seven key grades:
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exterior
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- Improved C
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- C
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Yes
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Yes
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Span Rating
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
- Vary by thickness
About APA Ratings
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
- Sheathing
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 11/32″
- 3/8″
- 1/2″
- 19/32″
- 5/8″
- 23/32″
- 3/4″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- Exterior application where one side is visible and under flooring
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Structural 1 Option
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
- Yes
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exterior
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- C
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- C
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Yes
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Yes
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Span Rating
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
- Vary by thickness
About APA Ratings
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
- Sheathing
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 11/32″
- 3/8″
- 15/32″
- 1/2″
- 19/32″
- 5/8″
- 23/32″
- 3/4″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- Exterior application where one side is visible.
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Structural 1 Option
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
- Yes
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exterior or Exposure #1
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- C
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- D
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Yes
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Yes
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Span Rating
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
- Vary by thickness
About APA Ratings
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
- Sheathing
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 11/32″
- 3/8″
- 7/16″
- 15/32″
- 1/2″
- 19/32″
- 5/8″
- 23/32″
- 3/4″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- Wall or roof sheathing where NO long term exterior exposure exists.
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Structural 1 Option
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
- Yes
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exposure #1
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- N/A
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- N/A
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- N/A
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Yes
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Span Rating
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
- Vary by thickness
About APA Ratings
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
- Sheathing and Flooring
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 1/4″
- 7/16″
- 15/32″
- 19/32″
- 5/8″
- 3/4″
- 7/8″
- 1″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- Wall or roof sheathing and subflooring where NO long-term exposure exists.
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Structural 1 Option
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
- Yes
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exterior
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- B
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- B
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- 303-6 allows 6
- 303-18 allows 18
- 303-30 allows 30
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Yes
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Span Rating
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
- Vary by thickness
About APA Ratings
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
- Siding
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 11/32″
- 3/8″
- 15/32″
- 1/2″
- 19/32″
- 5/8″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- Siding with permanent exposure to weather.
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Structural 1 Option
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
- N/A
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exposure #1
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- Improved C
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- C
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Yes
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Yes
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Span Rating
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
- Vary by thickness
About APA Ratings
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
- Flooring
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 19/32″
- 5/8″
- 23/32″
- 3/4″
- 1″
- 1 1/8″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- Subfloor application for high impact floor loads.
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Structural 1 Option
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
- Yes
About Bond Classification
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
The bond classification is telling you the type of glue or resin used and how well it holds up to the elements. Ratings include:
Exterior for applications that include many wet and dry cycles that come from long term exposure to the elements
Exposure 1 panels are designed to resist the effects of moisture but are NOT intended for long term exposure to the elements
Exposure 2 panels use interior glue and are intended for use in protected environments.
Interior rated panels are designed for interior use only.
- Exterior or Exposure #1
About Face Veneer
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of decorative wood that forms the visible surface on one or both sides of the panel. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- Sanded Face
About Back Veneer
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
Thin layer of wood applied to the opposite side of the face veneer. Its primary purpose is to provide structural balance and stability to the panel, preventing warping and twisting. Face and back veneers tell the quality rating of the veneer used in the construction of the panel. While “N” is technically the highest grade, the most common high grade found at a lumber yard will be the “A” grade. Outside of the shop grades, the lowest grade for a rated panel is “D”.
- C
About Face Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Yes
About Back Patches
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
Face and back patches are the repairs made by the mill to smooth out the graded faces. These repairs can take the following forms:
Boats are football shaped patches
Sleds are wider repairs
Router repairs are used to clean the veneer for a synthetic patch
“C” and “D” grades allow for some holes to remain without repair
- Yes
About Repair Material
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
Repair materials can be wood or synthetic with the specific grades calling out the allowance for the repair type.
- Wood or Synthetic
About Span Rating
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
Refers to the maximum distance (in inches) that a Performance Rated Panel (PRP) can safely span between supporting structures (e.g., joists, rafters) without exceeding its bending strength limitations.
- Vary by thickness
About APA Ratings
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
Rated for sheathing vs siding vs flooring, factoring in durability in harsh weather conditions or strength and stability. Based on building code compliances.
- Flooring
About Common Sizes
Common sizing of the panels is a function of the normal application of the panel.
Common sizing of the panels is a function of the normal application of the panel.
- 1/4″
- 11/32″
- 3/8″
- 1/2″
- 19/32″
- 5/8″
- 23/32″
- 3/4″
About Usage
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
Recommended applications for each grade of plywood. It helps users understand the intended purpose of each grade and select the most suitable one for their project.
- Interior applications for smooth under-carpet or resilient floors.
About Common Species
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
Panels in the Pacific Northwest are typically produced from Douglas Fir or Pine depending on the mill location and the quality of the veneer being purchased.
- Douglas Fir
- Pine
About Structural 1 Option
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
Structural 1 panels are those that support higher cross panel strength and resist racking in structural applications.
Panel Span Ratings
APA Rated Panels
On APA rated panels, you will see an individual number or set of numbers divided by “/” that indicate the maximum span for the panel in the application. All APA rated Sturd-I-Floor and Siding panels will have a number followed by an O.C. indicating the on-center span.
APA Rated Sheathing Panels
APA rated Sheathing panels will have two numbers that will be a larger number in front of a smaller one that look similar to 32/16 or 48/24. The first number is the roofing span and the second indicates the span in a subfloor application. When the panel is used in a wall application, any rating at 24 and over is used at 24” on-center and anything less than 24 is used at 16” on-center.
Oversized Panels
Some oversized panels built for wall applications will be rated by the APA as sheathing only. The grade stamp will indicate this by rating them at WALL-24 or WALL-16.
Why APA Rated Panels
Building codes are enforced to make sure that a structure protects the occupants in the event of a natural or man-made disaster. The safety of our buildings is accomplished through uniform standards that make it easy to know what is correct. The APA uses uniform testing standards and grading so that you know every panel you install meets the building code and the grade for which you are buying regardless of the mill where it was made.
Some retailers offer mill certified panels as a way to control cost or achieve a standard that they feel is acceptable for their customer base. This standard allows the mill to produce veneers or use adhesives of their own choosing that may or may not meet the building code. The mills also use their own quality standards that may not be in line with the industry standards.
The APA tests and rates panels on the following criteria
- Linear expansion from moisture exposure.
- Racking under a lateral load as part of a complete wall section.
- Uniform load and deflection tested under vacuum.
- Concentrated static load testing deflection and ultimate load between joist or wall sections depending on the application of the panel.
- Concentrated impact load tested by dropping weight onto the panel.
- Direct fastener withdrawal is measured by pulling apart a previously fastened panel.
- Lateral fastener strength is measured by forcing a panel laterally against the fastener.
- Surface profile is measured before and after moisture cycles to determine the stability of the pattern in APA Rated Siding.
- Peel testing is used to determine how well a panel will hold paint or stain.
Common Application
The most common APA panels are performance panels used in framing process of building a structure. Wall and roof sheathing, siding, subflooring, and crating are among the many everyday uses for APA rated panels.
Other specialty panels exist for specific applications like marine and concrete forming. Specific design criteria and limitations can be found on the APA website for these and many other special uses.
Whatever panel you choose, knowing the grade will help you determine if it is right for your project. Grading used in conjunction with your design will help make sure that your project lasts for as long as you want it to. All you have to do now is insist on rated panels.
For more information on the APA – The Engineered Wood Association rules on panels and grading standards, please visit the APA – The Engineered Wood Association www.apa.org.