Polycarbonate Roofing Fixing Buttons Pack of 10

These polycarbonate roofing fixing buttons provide supplementary sheet fixings where additional restraint against wind uplift is required. Each pack of 10 contains ten screws, ten button shafts with clip-in top caps and ten compression gaskets. The fixing arrangement passes through the polycarbonate sheet into timber rafters or noggins, with the gasket helping limit water ingress at the fixing point. The fitting details specify 300mm centres, at least 100mm from a cut edge, and an opening 2mm wider than the button shaft for sheet movement. These components are intended for use alongside glazing bars where supplementary restraint is called for.