Plywood Thickness Subfloor Carpet

This number is known as a span rating.

Plywood thickness subfloor carpet.

The thickness of plywood panels in a subfloor is regulated by the spacing of the joists. Make sure it is screwed and fixed at appropriate points usually a minimum 300mm centres. Using both adhesive and nails will prevent squeaky floors in the future. Cdx plywood ranging from 1 2 to 3 4 inch thick and rated a c will serve well for any hardwood flooring installation.

For many years the standard option was lauan plywood also called philippine mahogany or luan plywood which is made with an inexpensive tropical hardwood and therein lies its problem. It typically comes in 4 x 8 foot sheets. Tongue and groove plywood is available to reduce squeaks and help the subfloor fit together better. The minimum thickness allowed for ceramic tile installations is two sheets of 5 8 inch thick plywood.

Plywood is the best subfloor for hardwood flooring installation. To secure the panels a special subfloor adhesive will be added to the floor joists and each panel will also be nailed down anywhere it touches a floor joist. Wood and carpet can be installed directly on the subfloor. For hardwood finish flooring which average about 3 8 inch to 3 4 inch in thickness 1 2 inch to 3 4 inch thick plywood is the preferred subfloor though there are a variety of grades designed for.

Plywood is less affected by rain during construction and holds nails and screws better than osb but osb is usually less expensive. The plywood must be exterior grade for all wet areas and it has to be installed in such a way that the joints between each layer do not line up using what is known as a stagger pattern to keep the pieces from ever lining up. The subfloor thickness depends on the construction design namely the distance between the floor joists specified in the plans. When installing a plywood subfloor on top of the slab at grade the.

Most plywood underlayment is about 1 4 inch thick and has square edges and a smooth knot free top face.