Tarp 9×12 ft 100% Waterproof Uv Resistant High Durability Multipurpose 5mil Blue Tarp for Covering Courtyards, Cars, Camping, Gardens, Pet Nests -by MVPNET. Color: 5mil. Waterproof and Windproof:The waterproof tarp has a thickness of 5mil, which provides excellent waterproof, windproof, and UV resistant properties while being lightweight.