Description HardieBacker Fixing Screws are for fixing HardieBacker Boards to timber floor and wall substrates. They are self-countersinking, the screwhead cuts into the board so that as the screw is tightened the head finishes flush with the surface of the board. HardieBacker Fixing Screws require no pre-drilling. The thread on each screw features saw teeth that cut through the fibre cement material. Available in either 25mm or 35mm, in packs of 100 screws. Click here to view the Manufacturers website.
