This housewrap offers builders the optimal balance of air, water and thermal protection, all in one roll. ThermaWrap R5.0 provides continuous exterior insulation, while reducing thermal bridging through exterior walls. It also lowers energy costs by reducing air leakage, keeping cavity insulation dry and performing at its installed R-value. At the same time, breathability helps prevent mold and water damage, and improves air quality. Made in the U.S. with 20 percent pre-consumer, recycled polyolefin, ThermaWrap R5.0 contains no added fire-retardant chemicals.