AD Plywood

Definition

AD plywood is a type of plywood that is graded based on the quality of its surface layers. The "A" grade represents the highest quality surface with minimal defects, while the "D" grade indicates a surface with more imperfections. In AD plywood, one side is of "A" quality, and the opposite side is of "D" quality.

Purpose

AD plywood is used in applications where one side of the plywood will be visible and needs to have a good appearance, while the other side will not be seen and can have more defects. This grading system helps in selecting the appropriate plywood for specific uses, ensuring both functionality and aesthetics. It also aids in cost-effective material selection, as using a higher grade on both sides would be unnecessary for certain projects.

Examples of Use

1. Furniture Making: AD plywood is often used in furniture where one side is visible and needs a smooth finish, such as the exterior of a cabinet, while the back or interior sides can have more imperfections.
2. Paneling: In wall paneling, the "A" side of the plywood can be used facing out to ensure a good finish, while the "D" side faces the wall where it is not seen.
3. Shelving: Shelves made from AD plywood utilize the "A" side for the top surface that is visible and used, while the "D" side forms the underside.
4. Construction: In construction projects, AD plywood can be used where one side of the plywood will be exposed and needs to look good, such as in ceilings or wall partitions, while the other side remains hidden.

Related Terms

1. Plywood Grading: The system used to rate the quality of plywood surfaces, typically ranging from A to D.
2. CDX Plywood: A type of plywood with a "C" grade front face and a "D" grade back face, often used in exterior applications.
3. Veneer: Thin slices of wood glued onto the surface of plywood to improve its appearance and strength.
4. Exterior Plywood: Plywood treated to withstand outdoor conditions and resist moisture.
5. Structural Plywood: Plywood designed for structural applications, often graded for strength rather than appearance.

Notes

• The "A" side of AD plywood is typically sanded smooth and may be free of knots and other defects, making it suitable for painting or staining.
• The "D" side may have visible knots, splits, and other imperfections, making it less suitable for finish work but adequate for structural or hidden applications.
• AD plywood is versatile and cost-effective for projects requiring one good-quality surface without the expense of high-grade plywood on both sides.
• Proper storage and handling are essential to maintain the quality of the "A" side of the plywood, preventing damage that could compromise its appearance.