LaSalle Bristol introduced the first PVC (Poly Vinyl Chloride) RV Roofing membrane in 2007. RMA XTRM Ply is the industry's Cool Roof and offers 86% solar reflectivity, the highest tear strength and nearly 2X's the puncture resistance of traditional TPO and Rubber. RMA XTRM Ply also has the thickest wear layer, and is at least 27% lighter weight. In addition, our XTRM Ply RV Roofing System provides the highest solid content in roofing sealants (very low shrinkage), a water base adhesive that’s strongly (or permanently) secures our XTRM Ply membrane to any wood decking and a XTRM Ply Butyl Tape that secures itself around any roofing hardware to insure water tightness throughout the life of the our roofing system. XTRM Ply roofing membrane is backed by a 12 year warranty with 10 years at 100%