Thickness Of Subfloor For Hardwood Flooring

Cdx plywood should be a minimum of 7 16 inch thick.

Thickness of subfloor for hardwood flooring.

Tongue and groove plywood is available to reduce squeaks and help the subfloor fit together better. Nail down or floating floors may be installed over existing vinyl as long as it is no more than two layers thick. A smooth surface is necessary for a subfloor. 7 16 15 32 and 1 2 inch thick panels require joists spaced 16 inches on center.

1 2 inch 12 7 mm 5 8 inch 15 88 mm. 3 check before installation. What are the thicknesses of subflooring. Subfloor goes between the joists or boards framing the floor.

Thoroughly vacuum the existing floor and use a long level and tape measure to ensure the subfloor is level within 3 16 inch for every 10 feet. Cdx plywood ranging from 1 2 to 3 4 inch thick and rated a c will serve well for any hardwood flooring installation. Allow for a 1 32 inch gap between subflooring panels when installing hardwood flooring to accommodate swelling with increased moisture content. Usually manufactured in 4 by 8 foot sheets plywood panels and osb are acceptable subfloors for hardwood.

A subfloor that is less than 1 2 inch thick will dimple or. 3 4 thick solid wood flooring and most all other hardwood flooring including engineered or floating engineered wood flooring and laminate floors can be installed directly over 5 8 or 3 4 thick cdx plywood sub floors. The thicknesses are as follows. 1 suitable wood flooring.

If the spacing increases to but is no more than 19 2. Sub flooring must be installed with the strength axis perpendicular to the flooring joists. The subfloor provides a support. Considering the fasteners are installed at a 45 degree angle or blind nailed overall thickness required runs about 5 8 of one inch.

If the joists are spaced 16 inches on centers or less the minimum required thicknesses are 5 8 inches for plywood and 23 32 inches for osb.