What Is a Vapor Barrier?

A vapor barrier, also known as a crawl space moisture barrier, is a heavy-duty tarp-like apparatus made from polyethylene. Vapor barriers are used to seal off or “encapsulate” crawl spaces beneath houses, thereby preventing moisture from emanating up through the soil and collecting in the crawlspace where it can lead to mold and mildew growth.

During a crawlspace encapsulation, a vapor barrier is affixed to the ground beneath a house and used to line the foundation walls. In some cases, vapor barriers are even applied along the underside of the floors, creating a complete envelope through which water vapor from the ground cannot penetrate.

Generally, a full-scale crawlspace encapsulation service includes the application of a vapor barrier as well as the installation of a dehumidifier system. Having this dehumidifier system in place helps to ensure that the crawlspace stays at an appropriate humidity level despite any fluctuations in groundwater levels that may occur due to rain and other precipitation.

If you have noticed any of the floors in your home sagging or feeling squishy when you step on them, the underlying floor joists may be holding too much moisture. Similarly, if you are experiencing a musty odor in your home, this may mean that mold and mildew are forming in your crawlspace. If this is indeed the case, it’s best to contact a home waterproofing company to perform a professional inspection before costly structural damage occurs or the air quality in your home becomes hazardous.    

Turn to the Experts at ESOG

Here at Engineered Solutions, we’ve assisted countless homeowners throughout Atlanta and surrounding areas with all of their specialty home improvement needs. From vapor barrier installation to full crawlspace encapsulation and other interior and exterior waterproofing services, we can work with you to provide a lasting solution to your needs.

For more information about having a vapor barrier installed, contact us today.