Building A Subfloor Over Concrete

The underlayment exists to create an air filled gap between the concrete below and the subflooring which will help to insulate the floor and keep the room warmer.

Building a subfloor over concrete.

Subfloors are strong versatile and very durable. When direct gluing a wood subfloor over concrete follow the adhesive manufacturer s recommendation for moisture requirements and limitations type of adhesive application method trowel notch type and spread rates. Additionally the underlayment is always a waterproof material that will create a waterproof barrier. To begin you ll need two layers of 3 8 inch minimum cd exposure 1 plywood subfloor panels.

The result is a subfloor that protects finished flooring from cold and damp concrete based floors. One of the simplest options is a sleeper based subfloor. There are several subfloor installation methods each with its own guidelines including. You need a dry clean and flat surface before you can install finished flooring in a room built on a concrete slab.

How to install a plywood subfloor on a concrete slab floated subfloor system. The national wood flooring association issues guidelines for installing wood subfloor over concrete. Follow these installation guidelines when installing a wood subfloor. When the adhesive requires add a moisture control system before applying the adhesive.