Thickness Of Plywood For Subfloor

When installing a plywood subfloor on top of the slab at grade.

Thickness of plywood for subfloor.

Different plywoods use various materials and methods of manufacture depending on the application for which they re intended. 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. There are many types sizes and configurations of plywood. Subfloor holds up all of the above layers of flooring as well as everything in your house people dogs cats pianos furniture.

Is there a code or minimual thickness for subfloors. A subfloor is a wooden structural substrate to which durable finished flooring is attached. The thickness needed for subflooring depends on the type of floor that will go on top and the primary purpose for the subfloor. The thickness of plywood panels in a subfloor is regulated by the spacing of the joists.

Plywood is usually used as subfloor today. Is 1 2 plywood subfloor acceptable when strip oak flooring is going on top. Plywood comes in a variety of thicknesses beginning at 1 8 inch and increasing to 1 inch. 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.

The subfloors need to be thicker. For joists spaced more than 19 2 inches on center the minimum thickness for plywood is 7 8 inch and for osb 1 inch. Floor joists 16 on center.