Underlayment For Concrete Slab

Underlayment is a broad topic.

Underlayment for concrete slab.

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. Foam underlayment has r value of 0 2 0 35. 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.

Since concrete is porous water vapors transmits from the ground through the concrete slab into your basement. Using the right underlayment and installing it correctly can make or break a flooring installation project. 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. Once the water vapors gather underneath your flooring it will start to pool up and soak into your hardwood flooring.

6 mil vapor barrier underlayment over concrete floors. Doing it right begins with concrete slab readiness. Their main purpose is as a thin topping to level smooth or fix imperfections in concrete substrates prior to installation of other floor coverings such as tile carpet or vinyl. Concrete subfloor isn t usually warm and can make your feet nice and cold.

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. Once this happens the flooring can buckle or warp. Fiber felt underlayment has r value of 0 5 0 6.