Get everything you need in this handy ready to go bundle. Handle the water problems first with the InstaDry® sump kit. Once you have the crawl space water under control it's time to move the moisture control. DiamondBack™ vapor barrier has been a popular choice for almost 20 years. You can't go wrong with an American made vapor barrier that comes with a 30 year warranty and is certified Tested Pure™. This bundle will encapsulate a crawl space up to approximately 1250 sq ft, 3' tall and 10 support piers.