Roofing Supplies UK is proud to offer discounted flat roof windows to trade and private buyers. We stock cheap Velux flat roof windows, as well as Mardome flat roof windows UK customers can order online ready for delivery anywhere in the country. We stock several different Velux flat roof window sizes – if you’re unsure which option is going to work best for your flat roof, our experienced customer services team can help. All our Velux flat roof window products and other roofing materials are price checked. In addition, we offer a price-match promise on flat roof Velux windows and many other roofing products.