Level Subfloor With Roofing Felt

Determine and mark high and low spots across the floor.

Level subfloor with roofing felt.

I am installing a laminate with a pre attached pad on a plywood subfloor. Sanding the subfloor can remove minor swells or high spots in the wood but any low spots in the floor must be filled in order to level the plywood. You can level the plywood floor yourself using roofers felt a type of black paper comprised of fiberglass or polyester fleece which will help prepare the surface for your hardwood installation. Flip the piece of felt over so it s not curling up at the ends.

There is nothing wrong with using roofing paper or even shingles my favorite if there is a floor slight out of level. The house shifted and there is one floor joist that is a bit higher than the others. Neither 15 felt nor red rosin paper are vapor barriers. Set a strategy for filling in low spots to even out the floor.

I was going to use roofing felt to even it out and then brad nail down luan over this. Pulled up carpet to find 5 8 mdf underlayment over 1 2 plywood subfloor with some low spots that are out of spec for the laminate flooring. Roll out a course of roofing felt on the floor alongside the wall where you want the flooring courses to start. Their purpose is not to keep subfloor moisture from the flooring.

The floor doesn t have to be level it has to. Floor leveler is an option too but i usually use floor leveler for floating floors and shim traditional hardwood with shingles. Steps for leveling a subfloor step 1. Cut the felt at the end against the perpendicular wall by laying a level across the width of it and running a utility knife along the level.

The purpose of these membranes is to control dust pentration more important when subfloors were boards rather than plywood to create a slip plane to allow for differential expansion and to cushion the interface to minimize squeaks. Check how level your floor is as you work to make sure you re not creating new dips and high points. It caused a dip in the subfloor it levels out near the wall so the dip is say 4 feet wide or so. If the level of your floor is still slightly off after you ve applied the plywood you can use a layer of roofing felt to even out the floor before you install your flooring.

The reason for this is leveler sometimes has issues with staples or nails going through it. Fill in low. With a single shingle in the deepest part of this leveling project the floorwright taper back with 30 pound roofing felt and stanley fatmax tack hammer util.