Building A Subfloor Over Concrete

You need a dry clean and flat surface before you can install finished flooring in a room built on a concrete slab.

Building a subfloor over concrete.

The national wood flooring association issues guidelines for installing wood subfloor over concrete. Follow these installation guidelines when installing a wood subfloor. When installed correctly your concrete over plywood floor will not permit moisture through will not warp or buckle and will come with all the benefits of concrete in an easy to care for floor. Duraamen s param 5500 goes on thin in a 3 8 to 1 2 thick application.

The result is a subfloor that protects finished flooring from cold and damp concrete based floors. To begin you ll need two layers of 3 8 inch minimum cd exposure 1 plywood subfloor panels. Subfloors are strong versatile and very durable. There are several subfloor installation methods each with its own guidelines including.

Use a minimum 3 4 inch cd exposure 1 plywood sheathing 4 foot by 8 foot sheets. 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. How to install a plywood subfloor on a concrete slab floated subfloor system. Additionally the underlayment is always a waterproof material that will create a waterproof barrier.