Having water in your crawl space poses a number of different problems, from health concerns to home safety issues. StayDry offers complete crawl space sealing to address dampness under your dwelling, which breeds harmful molds and bacteria. Lowering the level of moisture also helps reduce the number of pests such as dust mites, cockroaches, and spiders, who are attracted to dark, wet places. Worst of all, excessive moisture causes structural damage to your home, and your house will not pass a home inspection without proper crawl space waterproofing.

What Is the Process for Crawl Space Repair?

We will inspect the exterior of your home as well as the crawl space to determine if you may need to simply alter the grade of the soil surrounding the home or install and extend downspouts. There are many different ways that moisture enters your dwelling, and our foundation consultants will explain to you where the water is coming from and how to best prevent it.

For high humidity levels and condensation, we will discuss with you the benefits of installing electronic humidity control systems, which remove the moist, humid air. If necessary, we can install a full perimeter drainage system into your crawl space that’ll have you safe and dry in no time. Once you have properly secured your home from the sources of humidity and moisture, building a vapor barrier, sometimes called a vapor diffusion retarder (VDR), in your crawl space is the next step.

Whatever the problem, StayDry has the answers for affordable encapsulation. From complete sealing to sump pump installation in a crawl space, our experts have years of experience in the industry.

What About Venting?

We now know that venting is not a great solution for keeping crawl spaces clean and dry. Indeed, venting will only help raise moisture levels if the outside air is more humid than the air inside, or when enough hot outside air enters and warms the space. New studies have shown that as air enters the space through the foundation vents and comes in contact with surfaces that have been cooled by the cold air in the ducts, the dew point is reached and condensation occurs. This is the relationship between temperature and relative humidity. When condensation forms on various surfaces within the environment, you have the ideal environment for mold, mildew, and the accompanying problems they create in your home.

At least half of the air we breathe comes from underneath our homes and up through the floor and venting system; this is called the “stack effect”. The stack effect is a natural phenomenon of constant movement of air through the house. Here’s how it works:

When hot air rises from underneath, it meets the cold air rushing in through leaky windows, doors, and crawl space vents. When hot meets cold, you have moisture. The air in the crawl space that gets sucked up into the living area therefore brings with it not only moisture, but also dust, allergens, mold spores, and soil gases. If the stack effect is causing air to be drawn into the house through the lower levels, then any possibility of meaningful cross-ventilation, allowing moist air to leave through the vent is negated.

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