5' x 20' 50 Mil Vinyl Tarp Roof Cover 55 oz. PVC - White/Gray 50 mil thickness, 55 oz. per sq. yd Super Heavy-Duty, perfect for roofing applications 100% waterproof, UV protected on both sides Rip-stop poly mesh scrim laminated in thick vinyl coating Flexibility at 40 below zero, anti-mildew, flame retardant