A rising number of legal actions* and complains regarding mold problems within homes among homeowners, tenants, and the construction industry has created more awareness of moisture issues in a crawlspace. Most crawl spaces are built with foundation vents, which are supposed to keep moisture problems to a minimum. Building scientists have long asserted that the vents bring in more moisture than they let out. So why do they keep building them with vents*? The short answer is because that is the way it has always been done. Therefore, homeowners have to go back after homes have been built to create a clean and healthy environment underneath their home. If your home is on a crawlspace, please ask yourself the following: Does anybody in your home have asthma or an allergy to mold? Do you have hardwood floors that are buckling? Is the insulation in your crawlspace falling? Do you have standing water that could invite bugs or rodents? If you answered yes to any of these, then you need to consider encapsulating your crawlspace.