A-grade plywood: This is the highest-quality plywood and therefore typically the most expensive, since the veneers will be flawless. A-grade plywood is smooth and can be easily painted.
B-grade plywood: B-grade plywood is slightly less smooth than A-grade plywood and has a solid foundation. It usually has minor flaws and can be subject to repairs.
C-grade plywood: This type of plywood has a few knots in its sheets that are up to 1.5 inches in diameter.
D-grade plywood: The cheapest type of plywood veneers, these sheets typically haven’t been repaired. The flaws can be slightly larger and the knots in this type of plywood can be up to 2.5 inches in diameter.

Different Types Of Plywood

CDX: CDX-grade plywood is typically inexpensive material, as it is made of the two lowest grades (C and D). It can also withstand some exposure to moisture. CDX plywood is great for building work tables and storage units.

Sanded Pine: A versatile type of plywood, sanded pine boasts a smooth and clean surface and also holds screws and nails tightly. It is best for building boxes and cabinets.

Baltic Birch: Also a versatile material, Baltic birch is marked by clean edges and a smooth finish, and is thus typically more expensive.

Let’s be honest: it can be very hard to know exactly what grade or type of plywood is most adequate for any given type of construction project unless you are familiar with all the options at your disposal, including the labels on said types of plywood (which can be confusing). Some plywoods are lighter, cheaper, more durable, and more weather-resistant than others (not to mention more aesthetically pleasing). Furthermore, the best type of plywood for building an outdoor project like a porch or deck may not necessarily be the most effective plywood for an indoor project like flooring or cabinets. Other projects like a boat hull, a shed, or a treehouse may also require other types of plywood.

Plywood is one of the most commonly used materials in the United States: according to a 2016 report from Statista, the total production of plywood and veneer in the U.S. that year was roughly 683 million cubic feet. There are four main grades of plywood veneer or ‘sheets’: A, B, C, and D. Each veneer contains two grades, with the corresponding compounds labeled as ‘AB’ or ‘BC,’ for example.(Cheapest Plywood) The first letter refers to the ‘face’ veneer,’ while the second one is for the ‘back’ sheet. If a plywood compound’s name has an X at the end, this means it has a certain level of exposure to moisture. By definition, plywood sheets are arranged perpendicularly to each other. Plywood can come in various thicknesses, including ½-inch, ¼-inch, and ¾-inch.

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