Check out our range of Corrugated Roofing products at your local Bunnings Warehouse. Visit us today for the widest range of Steel products. Buy Corrugated steel Roofing Sheets 2000mm from metals4U. With affordable prices & FREE delivery in England & Wales over £75. Galvanised Roof Fixings With Storm Washers. Galvanised Roof Fixings with Storm Washers should be used in high wind zone areas to prevent the Suntuf sheets from lifting from your roofing structure. Storm Washers are available in Corrugated & Greca and in boxes of 50.