These 30 x 40 tarp is available in a wide range of sizes, depending on your needs. You'll find a 30 x 40 tarp is waterproof, rip-resistant, serves as UV protection during the heat of the summer day, and assists in melting snow during winter storms. A 30 x 40 tarp is the best way to shield your large lawn equipment from the elements. Throw it over an old vehicle, toss it on the floor during indoor construction. The use of a tarp is endless. They are tough enough to last, so the only thing you have to worry about is: do you have the right size? A 30x40 tarp is a great way to go to keep your belongings sheltered.