Bio-Kleen RV Roof Cleaner and Protectant removes black streaks, oxidation and general buildup from your RV rubber roof. Safe for EPDM, PVC, TPO and most RV roof surfaces. Maximizes the life of RV rubber roofs by cleaning and protecting in one application. Contains a SPF 70 UV blocker that will adhere to the surface and provide up to six months of protection against UV rays, chalking, streaking and deterioration. Contains no petroleum solvents, harsh abrasives or citrus ingredients. Safe and biodegradable.