Plywood Subfloor Over Hardwood

Osb is a composite of glue and strips of scrap wood in.

Plywood subfloor over hardwood.

Before you install your plywood subfloor first calculate the room s square footage to find out how much flooring you ll need to buy. Right now i have 3 4 tg hardwood which is not in the best shape over a 2 5 wide x 3 4 inch think plank subfloor which runs perpendicular to the joists 2x10 16 oc. The key to a beautiful long lasting hardwood or laminate floor is a well prepared subfloor. If your floor is squeaking mercilessly feels spongy under your feet or is obviously sagging you may need to replace the plywood subfloor.

Make sure it is screwed and fixed at appropriate points usually a minimum 300mm centres. Underlayment covers subfloor flaws for the best possible results. Depending on when a home was built a subfloor could be made from softwood boards like pine or fir plywood or osb oriented strand board. Interestingly the supply of plywood into the uk is extremely inconsistent at present and probably over the last few years.

Plywood and osb subfloors over joists are most common in newer homes and new construction typically in homes with basements or crawlspaces. Plywood underlayment is typically needed when a floor material must have a very smooth flat surface. 1 suitable wood flooring. For example if you install resilient tiles or sheet flooring over a subfloor any bumps dips or voids in the subfloor may be evident in the finished flooring.

Ideally i would tear out the existing finish flooring screw down the existing plank subfloor where loose repair the plank subfloor where needed and then lay my new. However if you are trying to add stability and strength to the subfloor look at thicknesses from 15 to 22mm. Do this by multiplying the room s length by its width. Plywood is the best subfloor choice to lay on top of the pine because it nails in securely and creates a flat even surface for the new floor to adhere to.