Leveling Your Floor For Laminate. While bumps and dips in the subfloor require correcting, there's no need to. Shim up the subfloor as an alternative to a level compound for long lengths of a floor that are out of level with the joists. Plywood should be nailed in place, and sheets should not overlap.
You mix it with water in a bucket until it creates a thick paste. It will find the lowest areas of the floor and work to level out the subfloor. Materials for leveling uneven concrete floors.
Gallery of Leveling Your Floor For Laminate
How forgiving is vinyl in regard to an unlevel subfloor? When floor leveling a hump, grind from the middle to the edges. Most dips can be taken care of with a trowel and vinyl floor patch. This will stop you from taking too much off.