Good for subflooring or other applications where it will not be seen. There may be large areas that have been patched and filled. Grade C: Unsanded, with tight knots up to 1 ½ inches wide.Grade B: Sanded smooth, but the face and back have a few defects, some of which have been repaired with patches or wood filler.Good for cabinet doors and furniture, the surface is meant to be seen (not covered with another material) and can be painted or stained. Grade A: The face and back of the sheet is nearly free of defects, with a smooth, sanded surface and virtually no knots.The grade refers to the physical appearance of the plywood. It should be tongue and groove (indicated by T&G on the sheet) for a squeak-free floor. Subfloor plywood is waterproof, and usually of greater thickness (¾ inch to 1 1/8 inch).The “C” is the rating on the face, the “D” is the rating on the back, and “X” is for Exposure, which means it’s meant for outside use when covered with siding, for example. Exterior sheathing plywood is often used for lateral bracing on building exteriors and is rated CDX.The face can be made of various types of hardwood, though it’s often maple. ApplePly is a brand name for a high-end type of veneer core plywood with many hardwood plies that is used for drawers and furniture where the edges are visible and sometimes become design elements in and of themselves.
Lumber core plywood is comprised of lumber sandwiched between veneer layers.It’s very stable with a more consistent thickness than veneer core plywood and is often used for doors. MDF core is comprised of layers of wood ply sandwiching a core of MDF, or multi-density fiber.Veneer core plywood is the basic plywood with layers of wood bonded together.Types of Plywoodĭifferent projects call for different types, grades, and sizes of plywood. Did you know that certain types are used for airplanes? And other types for boats? And other types for furniture? And for roof decking and subfloors? These wide-ranging uses mean that numerous types of plywood are on the market-though not necessarily in your local home improvement store, which will typically carry plywood for exterior sheathing, roofing, subfloors, shelving, cabinets, and furniture. The vast choices in plywood stem from the vast uses for it.
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