Grip-Rite® ShingleLayment-15 is a woven 10 x 10 scrim polypropylene substrate coated on the walking surface with a spun bonded non-woven that provides non-skid traction. ShingleLayment-15 has high tensile strength to resist blow-off from high wind exposure. ShingleLayment-15 can be used under any mechanically attached asphalt shingle application.