HD Protect is a self-adhesive decking tape designed to protect the top of your timber from moisture that can lead to rot and loosening of screws and fasteners. Available in standard (63mm) and extra wide (118mm) deck tapes. HD Protect joist tape is oversized, including the HD Protect Layer. This not only provides more coverage, it also makes it clean to walk on and easy to work with. No mess or unnecessary stickiness.