Polyglass Polystick XFR Rubberized Asphalt Roof Underlayment 39 in x 49 ft, 160 sq ft

Polyglass Polystick XFR Rubberized Asphalt Roof Underlayment is a professional-grade, self-adhered underlayment engineered to provide superior protection beneath shingles, shakes, tile, or metal roofing. Each 39 in x 49 ft roll covers 160 sq ft and is designed with a robust polymer-modified bitumen surface and split-release SBS adhesive for fast, peel-and-stick application. This rubberized asphalt construction lays flat and provides a slip-resistant walking surface to enhance safety and ease of use during installation.

Because the underlayment is made from durable rubberized asphalt rather than traditional felt, it does not absorb water or wrinkle. The material resists mold growth, ensuring a dry and stable roof deck. Polystick XFR offers superior tear and puncture resistance compared to #15 felt, delivering excellent wind resistance and durability even during heavy roof traffic and harsh weather conditions.

Polystick XFR is lightweight, with a nominal weight of 75 lbs per roll, and can be easily handled by roofing crews. Its cavitated, slip-resistant top film and up to 180 days of UV exposure resistance allow for faster, wrinkle-free installation and longer-lasting protection for the roof deck until the primary roofing material is applied.

• Roll size: 39 in W x 49 ft L (160 sq ft coverage)
• Material – Rubberized asphalt (polymer-modified bitumen / SBS elastomeric adhesive)
• Slip-resistant surface for enhanced installation safety
• Superior tear resistance compared to #15 felt
• UV resistance for up to 180 days
• Ideal under shingles, shakes, tile, metal, and synthetic shingles
• Manufacturer part number: PSXFRQ
• Weight: Approx. 75 lbs per roll

Fast, contractor-friendly installation

Polystick XFR is engineered for easy handling and quick installation. The lightweight roll features a split-release film and self-adhesive SBS backing for straightforward peel-and-stick application, eliminating the need for nails or staples in most cases. The material lays flat with minimal wrinkles, and its slip-resistant surface keeps crews safe on steep slopes. Polystick XFR is compatible with a wide variety of roofing systems, making it a versatile choice for both residential and commercial projects.

Durability in extreme conditions

Polystick XFR meets ASTM D1970 and passes UL 790 Class A fire tests, making it resistant to extreme heat (up to 265 °F), heavy rain, and high winds. Its fiberglass reinforcement adds dimensional stability, and it remains flexible down to –20 °F, ensuring reliable performance in both hot and cold climates.

Certified for performance

Polystick XFR is UL-classified and meets key industry standards (ASTM D1970, ASTM E108/UL 790 Class A, ICC-ESR-1697), ensuring trusted protection under shingles, shakes, tile, and metal roofing.

Dimensions

Roll: 39 in x 49 ft

Weight

Approx. 75 lbs per roll