Underlayment For Concrete Slab

So to keep it simple this article does not talk about installation over wood subfloors and provides only a few examples of underlayment and their uses.

Underlayment for concrete slab.

In my case it is a dry basement new construction vapor barrier and insulation below slab but i m overly cautious don t want call backs and needed a nailing surface for the hardwood anyway. Using the right underlayment and installing it correctly can make or break a flooring installation project. 6 mil vapor barrier underlayment over concrete floors. Foam underlayment has r value of 0 2 0 35.

Underlayment is a broad topic. Concrete subfloor isn t usually warm and can make your feet nice and cold. Doing it right begins with concrete slab readiness. Underlayment for concrete slab thoughts on my system.

Once this happens the flooring can buckle or warp. The thermal properties are all considered by the material the underlayment is made up of. Thermal properties of underlayment can help keep your floor warm. Unlike other underlayment products you can use it with confidence over concrete surfaces without needing to first perform a calcium chloride test of the slab.

Fiber felt underlayment has r value of 0 5 0 6. Since concrete is porous water vapors transmits from the ground through the concrete slab into your basement. Underlayments unlike their overlay cousins do not get a chance to see the light.