Vapor Barrier On Slab Before Hardwood

Builders typically lay down a vapor barrier before they pour a concrete slab.

Vapor barrier on slab before hardwood.

We are talking about a glue down install of engineered wood over an on grade slab. Vapor barriers are used because while fresh concrete is poured wet it s not supposed to stay that way. A concrete vapor barrier is any material that prevents moisture from entering a concrete slab. Our moistureblock is a 6 mil polyethylene film vapor barrier that is used during the installation process with floating laminate luxury vinyl planks and engineered wood floors.

Concrete tends to wick water quickly and the barrier holds back most of the moisture. First vapor barrier on the concrete slab one of companies always uses a vapor barrier flooring vinyl on all their jobs. It needs to dry and then stay dry to avoid flooring problems. The other two says it depends on our area of the valley and our slab.

Cut another piece of vapor barrier material large enough to cover the damaged area by a minimum of 6 inches on all sides. Preventing the moisture from seeping up into the hardwood requires the installation of a vapor barrier also called a moisture barrier. Tape all the seams to adhere the repair piece to the existing vapor barrier. There are many types of vapor barriers including pvc.

Try cutting a 12 inch by 12 inch. Completely tape to pipe and vapor barrier. If the vapor barrier gets damaged before the concrete pour it must be repaired.