How and where to use guide
VELUX Twin and Combination Flashings 78x118cm EKW MK06 S0312
Suitable applications and roof types
This flashing is designed specifically for pitched roofs with slopes up to 45 degrees. It works with standard roof tile and slate coverings commonly found on UK residential properties. The EKW MK06 is the correct flashing size for VELUX MK06 roof windows measuring 78×118cm. The twin and combination configuration makes it ideal for installations where you need either a single window or multiple windows installed adjacent to each other on the same roof slope.
- Pitched roofs with slopes between 15° and 45°
- Tile and slate roof coverings
- Single or multiple window installations
- Standard residential roof structures
Installation and alignment
Proper alignment with your roof pitch is essential for weathertight performance. The flashing must be positioned so that the upper edge sits flush against the roof covering above the window, and the lower edge overlaps the roof covering below. Careful measurement of your roof slope before ordering ensures you receive the correct flashing type. The flashing should be secured according to VELUX installation instructions, with all joints sealed to prevent water penetration. Take time to ensure the window frame sits squarely within the flashing before final fixing.
- Measure roof pitch accurately before installation
- Align upper edge flush with roof covering above window
- Ensure lower edge overlaps covering below
- Follow VELUX fixing instructions precisely
- Seal all joints to maintain weathertight integrity
Limitations and site considerations
This flashing is not suitable for roofs exceeding 45 degrees pitch, as water run-off performance cannot be guaranteed on steeper slopes. The flashing is designed for use with the specific 78×118cm MK06 window size only; using it with other window sizes will compromise the weathertight seal. On-site conditions such as heavy snow loads or extreme weather may require additional support or reinforcement beyond standard installation. Always check that your roof structure can accommodate the window and flashing weight before commencing work.
- Not suitable for roof pitches exceeding 45°
- Must be used only with 78×118cm MK06 windows
- Requires adequate roof structure support
- Extreme weather conditions may require additional measures
Maintenance and durability
Once installed, the flashing requires minimal maintenance if properly fitted. Periodically inspect the seal around the window frame, particularly after severe weather, to ensure no water ingress has occurred. Check that roof tiles or slates remain properly seated around the flashing edges. If any gaps or movement is detected, reseal immediately using appropriate weatherproof sealant. The flashing itself is durable and should provide long-term protection when installed correctly and maintained as part of your regular roof inspection routine.
- Inspect seal after severe weather events
- Check roof covering remains seated around flashing
- Reseal any gaps promptly with weatherproof sealant
- Include in annual roof maintenance checks