Plywood commonly comes in plies of three, five, seven, and nine with the lowest numbers representing the highest class plywood. CDX plywood is made from pressing more of these plies together. This creates a much denser and thicker piece of wood.

It can be used in construction projects or a variety of other residential applications. It also meets high quality grading standards. Plywood comes in a wide range of classes, which can quickly determine its quality.
It is a lot thicker, which makes it ideal as a base or foundation of other materials. CDX Plywood is used primarily by contractors to build exterior walls and roofs. The two are bonded together with glue which can withstand a little moisture. The APA would recognize CDX Grade Plywood as C-D Exposure plywood. More on CDX Plywood.
The wood isn’t pressure treated or treated in any other way to make it waterproof , unless it is marked as being “pressure treated” plywood. Thank you for your recent inquiry with The Home Depot. What is exposure OSB?
Please partner with your local Home Depot to see if the carry the it and what the price is. We appreciate your business and look forward to serving you in the future. The type of glue used is an exterior glue, making this grade of plywood more versatile and also the most commonly used.


