26/01/19 by Jeff reviews4u. Gorilla tape is a brand of duct tape that is designed with a double strength adhesive and a reinforced water resistant backing. Gorilla Tape: 32m, 11m, 1″ handy roll Gorilla tape – 16 mil thick. FLEX TAPE vs. Gorilla Tape: which one is better? Although duct tape proved capable, the clear winner was Gorilla Tape, which handily won all our tests. It’s rips very cleanly, has a very grippy adhesive and is very strong. The Comparison between Gorilla, Duct, or Flex Tape . Gorilla, duct, and flex tape is useful for anything but different tape works batter in a different condition, material, and surface. Another disadvantage of flex tape is you can’t use it right away as it requires a minimum of 24 hours to take hold. This is over double the thickness of the other tapes and truly stands alone. Whether it’s carrying out temporary repairs, fixing broken items, hanging Christmas trees, or repairing leaking objects; the two are among the very first options that buyers go for when shopping for tapes. So we make a comparison between these tapes. Flex Tape and Gorilla Tape are both designed to be water-resistant and withstand harsh environmental conditions. It is also built to stick to a wide range of materials, including wood, brick and stone - that you’ll probably find other types of tapes may not always stick to.