The Vevor deck joist tape is a self-adhesive butyl flashing tape designed to protect deck joists, beams, and other surfaces from water intrusion and corrosion. This 10-pack includes rolls measuring 2 inches by 50 feet each for a total of 500 feet of coverage. It features strong adhesion, weather resistance, and a flexible design for easy cut, peel, and stick installation. Suitable for wood, metal, plastic, and rubber, it works well for decks, roofs, RV repairs, and pipe sealing. The black tape helps extend the lifespan of structural materials by blocking moisture and reducing rot.