Nylon Building Membrane Fixing Washers/Buttons

Great value product that does the job well

Great value product that does the job. They can be removed more easily than staples (when it comes time to add cavity battens) and they hold the wrap in windy conditions (check out EMs video on this issue). I aimed for 450-500mm centres as suggested. Screw sits on top rather than countersunk that you get on more expensive products but this is fine for my application.

Perfect! Great quality and value.