Polystick IR-Xe self-adhered ice and water protection underlayment for shingle roof coverings from Polyglass comprises a polymer modified bitumen upper compound and a proprietary self-adhesive SBS compound on the bottom to help prevent wind uplift. A split-release film allows for easy application. The underlayment is reinforced with a fiberglass mat and surfaced with aggregate to enhance skid resistance and allow exposure up to 90 days. polyglass.us