How To Flatten A Wood Sub Floor

Is there any way i can flatten it.

How to flatten a wood sub floor.

When nailing down a wood floor the subfloor should be flat to within 1 4 in 10 or 3 16 in 6. Low areas that are less than 1 4 inch deep can often be filled with building paper. I ve read that laminate flooring can only be installed over flat subfloors. The national wood flooring association guidelines call for bringing that subfloor to within 3 16 inch of dead flat over any 10 foot span or alternatively within 1 8 inch over six feet says daniel boone nwfa director of technical training.

It is the responsibility of the flooring installer to assess and address substrate flatness before installation. Using warped planks in framing a home or in a sub floor may result in problems as floors and walls begin to buckle. Installation of a wood floor over the subfloor insinuates acceptance by the flooring installer. As humidity or moisture from rain water falls onto the wood the lumber absorbs the liquid causing it to expand and bend.

I have a plywood subfloor with a few high low spots.