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Under roof corrosion of roofing fasteners is the great hidden danger. All protective coatings are subject to damage during installation when crest fixing metal roofing. Damage is caused by the scratching of the roof sheeting along the shank of the fastener. This allows the corrosive environment to attack the exposed metal of the fastener shank – reducing the structural integrity of any construction leading to costly repairs and replacement.

ShankGuard® is a revolutionary patented design feature specifically designed to protect fastener shanks from scratching and scouring. ShankGuard® cuts a slightly larger hole in the roofing profile than the shank diameter, protecting it against scratching on the sharp edges of the pierced hole in the metal roof. By remaining scratch free the fastener shank keeps its corrosion coating intact and fully functioning, up to 60% more corrosion resistant in comparative tests carried out in accordance with AS3566.