Roofex mall offers self-drilling fasteners for roofing sheets, from itw buildex of australia. These continue to set new standards in the australasian region. These self-drilling bolts save effort, time and money, while helping do a better job. Buildex fasteners have the following features: shankguard - a unique solution that protects the shank coating from damage during installation - damage that can cause under-roof corrosion; higrip- a design function which grips the roofing sheet for a secure connection and also extrudes the sheet upwards around the fastener hole to ensure a water-tight seal; new hiteks drill point - for accurate, faster and easier operation; and epdm washers - these non-conductive black seals help prevent corrosion on roofing sheets as well as on fasteners. The seals are black, because these remain elastic in temperature extremes, unlike grey seals that can break down and allow water entry.
