This moisture is likely to damage wood by causing wood rot that can further lead to swelling and buckling of joists and flooring. A damaged crawlspace also possesses health hazards as it can cause disease. This is why it is important to protect your crawl space by installing the right barriers. We offer a wide variety of crawl space encapsulation diy supplies, starting with barriers and tapes, that can be installed to keep the moisture away from the crawl space of your house.