Plywood Subfloor On Concrete. 2 layers nominal 38 10mm minimum CD Exposure 1 Plywood subfloor panels CDX 4 x 8. While you can lay tile directly over a concrete slab using thin-set adhesive dont make the mistake of applying tile directly to a plywood subfloor.
The underlayment exists to create an air-filled gap between the concrete below and the subflooring which will help to insulate the floor and keep the room warmer. A subfloor can also be made of concrete. Concrete is a porous material and can retain moisture and emit moisture vapor which could end up in the wood floor above unless the proper precautions are taken.
No matter how firm the subfloor.
Often when we talk of subflooring people think of lauan plywood which is used as subflooring over thicker plywood in preparation for installing a vinyl floor. Learn how plywood substrates can be resurfaced with self-leveling concrete to create beautiful polished concrete floors using Param 5500 and clear coatings. Not all subfloors are the same. Lay as many of these sheets as you need on the concrete to make the first layer of subfloor.