Thickness Of Plywood For Subfloor

Floor joists 16 on center.

Thickness of plywood for subfloor.

Is 1 2 plywood subfloor acceptable when strip oak flooring is going on top. Plywood is the most common type of subflooring. Subfloor holds up all of the above layers of flooring as well as everything in your house people dogs cats pianos furniture. The thickness of plywood panels in a subfloor is regulated by the spacing of the joists.

Plywood comes in a variety of thicknesses beginning at 1 8 inch and increasing to 1 inch. A subfloor is a wooden structural substrate to which durable finished flooring is attached. Plywood is usually used as subfloor today. For joists spaced more than 19 2 inches on center the minimum thickness for plywood is 7 8 inch and for osb 1 inch.

I m pulling up damaged 1 2 plywood subfloor in 1960 s house. Typically made of plywood or osb and ranging in thickness from 19 32 to 1 1 8 thick the subfloor is truly structural second only to joists in this respect. This number is known as a span rating. For joist spacing of more than 16 inches up to 19 2 inches on center the minimum thickness for both plywood and osb is 3 4 inch.

There are many types sizes and configurations of plywood. The thickness needed for subflooring depends on the type of floor that will go on top and the primary purpose for the subfloor. The subfloors need to be thicker.