Look no further for your cheap OSB roof material than Roofing Supplies UK. We stock OSB roof timber for flat roofs, as well as OSB that’s just the thing for a shed roof, carport, or similar. Made by Sterling, the OSB we provide is water-resistant and available in several different widths. If you need OSB board for a flat roof, or any other project, order online and we will get it to you as fast as we can. Grab a bargain and stock up on cut-price OSB board for your next roofing project.