Plywood Flooring Thickness

This type of plywood won t sag when used on a 12 inches joist structure.

Plywood flooring thickness.

Plywood is the most common type of subflooring. Because the actual thickness may vary measuring the plywood is the only accurate way to determine its thickness. The national wood flooring association recommends a minimum plywood panel thickness of 7 8 inch for joist spans of 19 2 to 24 inches and a minimum plywood panel thickness of 5 8 inch for joist spans of 16 inches or less. Plywood flooring thickness is important for proper weight distribution.

Some experts suggest that 15 32 inch plywood should be standard if the underlying floor joists are spaced 16 inches apart or less but slightly thicker 3 4 inch plywood should be used for joists spaced further apart. It adds proven performance and durability to new homes room additions and renovations. The thickness of your plywood subfloor depends on the joist spans. The most common thickness of plywood is 1 2 inch but plywood thickness can range from 1 8 inch to 3 4 inches.

It is rot resistant with knots replaced with football shaped plugs to give it a smooth moisture resistant surface. Attic storage might be a good idea but other issues such as insulation joist spacing and intended usage should be taken into consideration. The thickness needed for subflooring depends on the type of floor that will go on top and the primary purpose for the subfloor. What is the actual thickness of a sheet of plywood.

The recommended shed floor plywood thickness is 3 4 inch pressure treated exterior grade cdx plywood. The recommended thickness of the plywood subfloor is governed by the spacing of the joists. The most common plywood uses include support for floors walls roofs and garages in residential construction. Plywood is often sold in 1 4 1 2 or 3 4 nominal thicknesses but the actual thickness is often 1 32 thinner.

A 3 4 sheet is actually 23 32 thick. The finished floor is then installed on top of the subfloor. Plywood flooring thickness is important for proper weight distribution. The minimum thickness allowed for ceramic tile installations is two sheets of 5 8 inch thick plywood.

Plywood sheathing is ideal for residential and light plywood sheathing is ideal for residential and light construction and every piece meets the highest grading standards for strength and appearance. Plywood comes in a variety of thicknesses beginning at 1 8 inch and increasing to 1 inch. The subfloor is the decking installed on top of flooring joists.