A superior roofing felt EcoStar Aqua Guard is a highly durable, waterproof underlayment designed for indefinite outdoor exposure on both residential or commercial buildings. Made of polyethylene/polypropylene, it's stronger and lighter than traditional roofing felt and is more slip, tear and wind-resistant. It will not degrade or crack when exposed to the sun for up to 90 days. EcoStar Aqua Guard is a cost-effective alternative to roofing felt that provides superior protection while meeting all national roofing codes. [tabs] Why We Like It This product is clearly a big improvement over petroleum-saturated felt paper. It's stronger, lighter, easier to install and longer lasting in extreme conditions of heat or wind. It's required by EcoStar for their Goldstar Warranty. Features & benefits Ideal for new construction and re-roofing — meets all national roofing codes for all residential and commercial buildings Strong — made of polyethylene/polypropylene Wind and weather-resistant — won't tear, crack or blow off Safer — better slip resistance Performs well in all climates — suitable for -20 to +200 ° F Easier installation — lighter and easier on your back; only 38 lbs per roll Long-lasting — less likely to degrade during and after installation