RGJIAYE RGM-BW-PS Self-adhesive Roofing Underlayment is a homogeneous butyl waterproofing membrane designed to protect roofing structures. It provides best protection for roofing from water infiltration damaging caused by wind-driven rain, snow and ice dams. Its unique rubberized butyl formulation offers a unique combination of both high temperature ( 250℉ / 120℃ ) flow resistance , and lowtemperature ( 40℉ / 4.4 ℃ ) deck adhesion. The special adhesive formula also self-seals around nails and roofing fasteners. RGM-BW-PS is intended for use under many roofing materials whether they are commercial or residential, including metal, wood, tile, slate and both asphalt and synthetic shingles. It is easy to use, versatile and created for use on the whole roof or on critical roof areas such as eaves, ridges, valleys, dormers and skylights. In addition, RGM-BW-PS features a superior fabric surface which provides for exceptional durability , 270 days UV exposure rating and good slip resistance.