4 spread self leveling underlayment as an.
How to use roofing felt to level subfloor for laminate.
Staple each shingle to the subfloor with a staple gun and layer the shingles to bring the level of the floor up to the bottom edge of the straightedge.
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 shingles should not overlap where they meet.
Unfurl a roll of roofing felt.
Measure the felt to match the measurements of the low spots in the subfloor.
Flip the piece of felt over so it s not curling up at the ends.
This article is part of our series on how to install hardwood floors.
Cut the felt to size with a utility knife.
While preparing to lay 1100 square feet of hardwood flooring we discovered significant variation in the osb subfloor that will serve as the nailing surface for the hardwoods.
Lay two shingles flush against the first shingle on either side.
Continue to layer the shingles in this fashion until you think the floor is level.
Place the first shingle in the dip.