Made with double thick adhesive, strong reinforced backing, and a tough all-weather shell, it's the biggest, strongest, toughest thing ever to happen to duct tape. Monica duct Tape is manufactured with a highly concentrated rubber based adhesive - two to three times as thick as traditional duct tape. The result is a tape that fills gaps and penetrates rough surfaces. It sticks to rough and uneven surfaces, including wood, stone, stucco and brick, that ordinary duct tapes can't hold. To us, it's made the way tape should be: The Toughest on Planet Earth. Directions: Use like any other tape. Duct tape,sometimes called duck tape, is cloth- or crim-backed pressure-sensitive tape, often coated with polyethylene. There are a variety of constructions using different backings and adhesives. Duct tape is heat-resistant foil (not cloth) duct tape useful for sealing heating and cooling ducts, produced because standard duct tape fails quickly when used on heating ducts.