Vapor Barrier On Slab Before Hardwood

No need to bother with large fold out low quality off spec construction grade films which can be bothersome and hard to use before the floor is installed.

Vapor barrier on slab before hardwood.

First vapor barrier on the concrete slab one of companies always uses a vapor barrier flooring vinyl on all their jobs. There are many types of vapor barriers including pvc. 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.

Underlayment with 6 mil vapor barrier. Tape all the seams to adhere the repair piece to the existing vapor barrier. Concrete tends to wick water quickly and the barrier holds back most of the moisture. A concrete vapor barrier is any material that prevents moisture from entering a concrete slab.

Builders typically lay down a vapor barrier before they pour 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. The other two says it depends on our area of the valley and our slab. Completely tape to pipe and vapor barrier.

Should a vapor barrier always be used in this scenario. Cut another piece of vapor barrier material large enough to cover the damaged area by a minimum of 6 inches on all sides. It needs to dry and then stay dry to avoid flooring problems.