The SaniDry is a great crawlspace and basement dehumidifier/air machine. It will pull up to 109 pints of water out of the air per day. This dries the air, wood, and building materials in your crawlspace, basement, and even the rest of your home. The CleanSpace Vapor Barrier is a thick 7 layer liner. It is overlapped and doubled taped with strong seamed. It is very hard to tear a hole in it and will give any home the best protection against wood rot, mold, mildew, and odors.