Vapor Barrier On Slab Before Hardwood

Cut another piece of vapor barrier material large enough to cover the damaged area by a minimum of 6 inches on all sides.

Vapor barrier on slab before hardwood.

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. Builders typically lay down a vapor barrier before they pour a concrete slab. First vapor barrier on the concrete slab one of companies always uses a vapor barrier flooring vinyl on all their jobs. Underlayment with 6 mil vapor barrier.

A concrete vapor barrier is any material that prevents moisture from entering a concrete slab. Concrete tends to wick water quickly and the barrier holds back most of the moisture. Preventing the moisture from seeping up into the hardwood requires the installation of a vapor barrier also called a moisture barrier. Completely tape to pipe and vapor barrier.

If the vapor barrier gets damaged before the concrete pour it must be repaired. The other two says it depends on our area of the valley and our slab. Tape all the seams to adhere the repair piece to the existing vapor barrier. It needs to dry and then stay dry to avoid flooring problems.

Try cutting a 12 inch by 12 inch. 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. We are talking about a glue down install of engineered wood over an on grade slab.