This box contains six rolls of decking joist tape, each measuring 25m in length and 50mm in width. The tape is made of butyl material and is easy to mount, making it a convenient choice for treated timber decking subframe. The black colour of the tape adds a sleek and professional and atheistic finish as you look between the deck boards. Prolong the life of decking subframe with this fantastic deal for only £80 that will cover up to 150 linear metre of joists. Free postage and package.