Since the house breathes from the bottom up, the last thing you want is to leave openings for outside air to come in and allow dirty air from the crawl space to enter your home, causing your family to breathe in dirt and mold particles, contributing to allergy symptoms and other health issues.

Most crawl spaces have been vented due to antiquated building codes. We now know that venting a crawl space creates big problems!  It is absolutlely necessary to seal any vents or areas where outside air can enter in order to prevent potential health issues, mold, mildew, odors and other damage in your crawl space. By doing so, the sealed vents will not only keep outside air out but it will help with other elements such as insects, overly hot or cold temperatures, and keeping the moisture level down. Our patented vent covers are mechanically attached to form an airtight bond.

Vented Crawl Spaces are Trouble

Construction workers have always favored crawl spaces because they’re faster and less expensive to build than a full-blown basement foundation. This type of traditional crawl space utilizes openings or air vents in the crawl space walls so that the air outside can circulate underneath your living space.

If there is any insulation installed, you may find it in the form of fiberglass batts, placed between crawl space joists, while the crawl space’s floor will be made of soil, or concrete.

Having this type of crawl space can be troublesome over time, as during the summer, warm and moist air enter the crawl space, condensing on the cooler crawl space surface. When the crawl space continuously receives this warm air, it can cause moisture to form, which invites mold to grow and causes wood to rot.

The presence of wet wood can also attract insects such as termites and carpenter ants, who want nothing more than to chew up the wood and terrorize your home. Additionally, the fiberglass insulation easily absorbs moisture, and may sag or fall out of place, settling onto the crawl space floor. In winter, there’s a new set of problems: the floors become too cold because of the wet and missing insulation, meaning higher heating bills.