How and where to use guide
VELUX Twin and Combination Flashings 114x118cm EBP SK06 0021B
Typical applications and roof types
These flashings are specifically designed for pitched roof installations where standard roof tiles or slates are the primary covering material. The 114x118cm size suits standard roof window openings and is compatible with VELUX roof windows. Use this flashing when installing new roof windows or replacing existing flashings on pitched roofs with tile or slate finishes. The dual-function design makes it particularly suitable for projects where installation speed and consistency are important.
- Pitched roofs with clay, concrete, or slate tiles
- Standard VELUX roof window installations
- New build and retrofit applications
- Projects requiring weathertight integration without additional sealing work
Installation and on-site use
Position the flashing around the roof window opening before securing the window frame. The integrated upper and lower elements should align with the roof slope and surrounding tiles or slates. Ensure the upper flashing element sits beneath the tiles or slates above the window, whilst the lower element sits above the tiles or slates below the window. This overlapping arrangement creates the weathertight seal. Secure the flashing according to VELUX installation instructions, ensuring all fixings are through the designated fixing points and that the flashing sits flush against the roof surface.
- Install upper flashing element first, positioning it beneath the course above
- Fit the window frame into the flashing assembly
- Install lower flashing element, overlapping the tiles or slates below
- Use appropriate fixings for your roof covering type
- Check that all edges are properly sealed and no gaps remain
Limitations and important considerations
This flashing is designed specifically for pitched roofs with tiles or slates and is not suitable for flat roofs or other roof covering materials. The 114x118cm size is fixed and must match your roof window opening dimensions. Do not attempt to modify or cut the flashing, as this will compromise the weathertight seal. The flashing works only with compatible VELUX roof windows; verify compatibility before purchase. Installation should follow VELUX technical guidance to ensure warranty validity.
- Not suitable for flat roofs or non-standard roof coverings
- Size is fixed at 114x118cm; check window opening dimensions before ordering
- Do not modify or cut the flashing
- Verify compatibility with your specific VELUX window model
Maintenance and durability
Once installed, the flashing requires minimal maintenance. Periodically inspect the seal around the window frame, particularly after severe weather, to ensure no gaps have developed. Clear any debris such as leaves or moss from the flashing edges to maintain water drainage. The integrated design means there are fewer joints to maintain compared to separate upper and lower flashings. If any damage is visible or water ingress occurs, the flashing should be inspected and replaced if necessary.
- Inspect seals annually or after severe weather
- Keep flashing edges clear of debris and moss
- Check for any gaps or separation from the roof surface
- Replace if damage is visible or water ingress occurs