When And How To Use Plywood Underlayment
Underlayment Is Not Subflooring Often, the terms “subfloor” and “underlayment” are used interchangeably. Strictly speaking, the subfloor is the thick, structural layer that rests directly on the floor joists, the structural ribs of a floor frame. Underlayment is a thinner material that lies over the subfloor. While underlayment may add a modest amount of stiffness to a floor assembly, it does not strengthen a floor or enhance it structurally. Plywood is only one type of underlayment....