Wellco RPFVB3350BN Polyethylene Film Vapor Barrier Underlayment Installation Guide
Wellco RPFVB3350BN Polyethylene Film Vapor Barrier Underlayment Specifications Thickness .006 inch (6 mil) Perm 0.09 WVTR 0.17 lbs/1,000 sqft/24 hours Usage Instructions Prepare the Surface: Before laying the film, thoroughly…