VELUX roof windows and skylights use flashing kits that are specific to their roof pitch and roofing material requirements. Provided the proper VELUX flashing system is used and installed correctly, we will stand behind the product against leaks. The unique construction of VELUX flashings ensures safe drainage of rainwater coming from the roof above the window, providing complete weathertightness and preventing leakage. Because the roofing material covers both top and sides, VELUX flashings are largely unobtrusive. VELUX flashings are compatible with virtually any type of roofing material, from standard covers such as shingles, slate, and tile to corrugated sheeting or even thatch. VELUX undertakes extensive testing to ensure that all products perform to the very highest standards. Flashings are put through some of the world’s most severe artificial rain and wind tests.