PP+PA High Barrier Film with High Mechanical Strength and Improved Puncture Resistance for Roof Underlayments

PP+PA High Barrier Film for Roof Underlayment & Waterproofing Membranes High-Strength PP+PA Film | Puncture Resistance | Moisture Barrier | Customizable Release Force UPASS PP+PA Film is a multilayer functional film developed for roof underlayment, waterproofing membranes, self-adhesive waterproofing membranes and butyl waterproofing tape . Combining polypropylene (PP) with a PA nylon reinforcement and barrier layer, the film provides a balance of mechanical strength,