The only roofing underlayment with the high performance of a synthetic underlayment and the finished look of a shingled roof. Grip-Rite ShingleLayment synthetic underlayment is a lightweight, woven polypropylene underlayment coated with a non-skid TPO. ShingleLayment possesses very high tensile and tear strength that resists tearing, ripping, and blow-offs from high wind exposure. ShingleLayment can be used in any code-compliant mechanically attached roofing application. Grip-Rite ShingleLayment synthetic underlayment is used on steep-slope roofs beneath shingles, battened tiles, metal roofing, slate, wood shake, shingle, and simulated slate/shake prepared roof coverings as an alternate to ASTM D226, Type I, or II or ASTM D4869 asphalt felts. Grip-Rite ShingleLayment synthetic underlayment is a water-shedding device designed to reduce the occurrence of leaks caused by wind-driven rain penetrating primary roof system coverings, as well as damaged roof coverings and as temporary cover on exposed roof systems. Both print patterns feature installation and nailings grids for easy, accurate application. Grip-Rite ShingleLayment synthetic underlayment increases applicator productivity thanks to its low weight per roll and superior 10 sq. roll coverage. Grip-Rite ShingleLayment synthetic underlayment can be exposed to natural UV for up to 180 days. Severe weather, jobsite damage, chemical exposure, or other conditions may shorten exposure life.