Because it can help prevent damage and potential hazards, a moisture barrier under the house is extremely important. Installing a vapor barrier in your crawl space will help to keep the area dry and safe.

Do vapor barriers promote the growth of mold?

During construction or more frequently throughout the life of the home, this may result in significant moisture problems and mold growth. Problems may occur when walls become wet during construction or more frequently throughout the life of the home.

How long does a vapor barrier in a crawl space last?

When installed properly, a vapor barrier should last for twenty years or longer.

Is crawl space encapsulation and vapor barrier the same thing?

Encapsulation differs from vapor barriers in that it completely seals out water vapor and halts the process of water vapor rising from the ground up. Because the entire crawl space, including the walls, is encapsulated, the likelihood of developing moisture problems due to water vapor is reduced to almost zero.

What are the consequences of not putting down a moisture barrier?

Moisture problems can occur if water vapor diffuses or infiltrates into the wall cavity and finds a cool surface to rest on. Because of the rule of material wetting, it is possible to have moisture problems even in the absence of an exterior vapor barrier.

When and where should a vapor barrier be placed?

Vapor barriers are typically installed on the side of the wall that is subjected to the highest temperatures and most moisture. In colder climates, the inner surface is used, and in hot, humid climates, the outer surface is utilized.