WhiteCap Insul-Liner takes encapsulation to the next level with all the benefits of WhiteCap Reinforced Vapor Barrier Liner plus even more. It is not only a vapor barrier, but also a reflective radiant barrier and insulation that is unaffected by humidity and moisture. Insul-Liner is composed of insulating layers of aluminum foil, polyethylene backing, and closed-cell polyethylene foam, making it an all-in-one solution for heat, condensation and cold in both your basement and crawl space. Unlike standard fiberglass insulation, Insul-Liner is resistant to mold, is not harmful to your health, and does not provide nesting for rodents, bugs and birds. If you want to encapsulate the crawlspace, or grow room, and make the home or business more energy efficient, we suggest installing the dimpled drainage matting and WhiteCap reinforced plastic sheeting on the floor, and then install Insul-Liner on the walls. WhiteCap Insul-Liner will even bring the same benefits to the basement walls and grow rooms that it does in the crawl space. Compare the cost, time savings and benefits of using Insul-Liner on the walls vs. fiberglass or spray foam. You will be amazed!