FelTex® premium synthetic roof underlayment, is among the safest, strongest, and best-performing roof underlayments on the market. It balances strength and weight, provides dynamic steep-slope traction, and will not buckle, warp or crack. FelTex is rated for commercial and residential applications using plastic cap fasteners and roofing nails (3/8-inch head), and is an ideal underlayment for asphalt, shingles, metal, tile, slate, and a variety of sloped roofing materials. Skid-resistant surfaces and the proprietary Fiber Claw™ textured surface make FelTex the best choice for steep slope applications. Whether you're working on a FelTex-protected roof, or living underneath one, you'll appreciate FelTex's quality. Request Quote & Orders