Choosing the right kit depends entirely on your roof material and pitch. If your roof uses flat slates up to 8mm thick, a slate flashing kit is necessary. For profiled materials or interlocking tiles up to 120mm thick, a tile flashing kit is the correct choice. Always check your roof pitch, as most standard kits require a minimum slope of 15°.
Velux Roof Flashing Kits for Slate and Tile Roofing
Velux roof flashings provide the essential weather seal needed when fitting skylights into pitched roofs. These items sit securely around the window frame, bridging the gap between the window and the roofing material to ensure rainwater drains away safely. Available in several formats, the range includes specific options for different roof coverings, such as flashing kits designed for flat slates, profiled tiles or interlocking roof materials. Applying the correct flashing ensures water tightness and helps prevent leaks in exposed locations.
Proper installation requires matching the flashing profile to the roof surface and the pitch, which typically ranges from 15° to 90°. Options like the EDW flashing accommodate profile tiles up to 120mm thick, while slate flashings offer a flush fit for thinner flat materials. The lightweight aluminium sections fit together intuitively around Velux roof windows, simplifying the fitting process while ensuring compliance with strict weatherproofing standards. The versatile design accommodates various thicknesses, making it straightforward to achieve a neat, flush finish regardless of the roof covering.
A complete and reliable installation relies on integrating the flashing correctly with the surrounding roof structure. During the fitting process, securing the flashing against roofing batten provides a stable framework, while overlapping the sections with roofing felts & membranes ensures secondary protection against wind-driven rain. Integrating the flashing pieces closely with the surrounding slates & tiles directs water safely down the roof slope, keeping the internal spaces completely dry and protected over the long term.
Velux Roof Flashings FAQ's
No, Velux flashing kits operate on a dry mount principle and do not require exterior caulk or silicone sealants. The metal sections overlap with the surrounding roofing material to create a watertight drainage channel. Avoiding sealants helps prevent future leaks, as wet applied sealants can degrade over time under harsh weather conditions.
Yes, you can achieve a more streamlined appearance by using a recessed flashing kit instead of a standard one. Recessed kits install the window 40mm deeper into the roof structure so it sits flush with the slates or tiles. Note that recessed installations typically require a minimum roof pitch of 20°.
Fitting a flashing kit requires common roofing and carpentry tools. You will typically need a tape measure, a drill or screwdriver for securing the window brackets, tin snips for minor modifications to the flashing apron, and a saw or angle grinder if you need to cut surrounding roof tiles to size.
Yes, using the manufacturer recommended flashing kit ensures your installation meets strict weatherproofing standards. The flashing integrates directly with the window frame to form an approved watertight seal. Following the official fitting guidelines also helps maintain the manufacturer guarantee on the window itself.