There are several instances that water damage and molds have started from crawl spaces. The reason behind this is that in some homes, crawl spaces are rarely accessed or used. Thus, unintentionally, we overlook its functionality and its maintenance as well. Just like every other part of the house, a crawl space should be given the same attention as well. When neglected, a crawl space that is not properly moisture controlled can cost you a lot of money. Your home will be susceptible to rot, molds and insect damage. In addition, a non-moisture controlled crawl space is energy inefficient, which translates into higher heating and air conditioning bills. If the air conditioning units or your heating system is located in the crawl space, it may be damaged due to high moisture content.
The condensing moisture attaches itself to floor framing surfaces where mold can begin to form and eventually become its home environment if not prevented. There are several basic steps you should do to minimize the moisture levels in your crawl space. See to it that the floor of the crawl space is cleaned thoroughly, which includes removing debris, sharp objects, and sure void cardboard foundation material. The crawl space is then covered with a 10 mil layer of polyethylene vinyl (plastic) to reduce moisture transfer from the ground into the crawl space area. The seams must overlap by 1-2 feet. The plastic should go up the sides of the wall of the crawl space approximately 6-12 inches.

Damage to the framing members and insulation should be remediated as well. A crawl space where mold is present and/or there are moisture/humidity issues the insulation will need to be replaced. Once the insulation is removed, the framing members (sub floor and wood joists) will need to be checked for moisture using a standardized moisture meter. If the framing is still holding moisture, the crawl space will need to be professionally dried with a LGR dehumidifier or desiccant drying system, and negative air machines. Once dried to the drying standard, a remediation team should continue by using proper personal protective equipment, establishing negative air pressure, hepa-sanding mold impacted framing members, and finally, encapsulating the mold impacted framing with a mold sealant to prevent further mold growth.


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