How and where to use guide
VELUX Twin and Combination Flashings 134x140cm EKJ UK08 S0021E
Suitable applications and roof types
This flashing is designed specifically for pitched tile roofs and works with compatible VELUX roof windows and Sun Tunnel systems. It is suitable for both new build installations and refurbishment projects where you are upgrading or replacing existing roof windows. The 90mm recessed design allows the flashing to sit neatly between roof tiles, creating a flush, integrated appearance rather than a raised profile. Ensure your roof window or Sun Tunnel system is compatible with the EKJ UK08 S0021E before ordering.
- Use on pitched tile roofs only
- Compatible with VELUX roof windows and Sun Tunnel systems
- Suitable for new build and refurbishment applications
- 90mm recessed depth for neat integration with roof tiles
Installation and positioning
The flashing must be installed in strict accordance with VELUX installation instructions and building regulations. Position the flashing so that the recessed section sits flush with your roof tiles, creating a continuous, weather-tight seal. The 1340×1400mm dimensions are fixed, so verify compatibility with your specific roof window model before installation. Ensure the flashing is level and properly aligned with the roof plane. Poor positioning or misalignment will compromise the weather-tight seal and may lead to water ingress. If you are unsure about installation, consult VELUX technical guidance or engage a qualified installer.
- Follow VELUX installation instructions precisely
- Position flashing flush with roof tiles for weather-tight seal
- Verify dimensions match your roof window opening
- Ensure level alignment with the roof plane
- Engage a qualified installer if uncertain
Weather protection and maintenance
The flashing is engineered to provide a weather-tight seal in typical UK roof conditions. Once installed, inspect the flashing periodically, particularly after severe weather, to ensure the seal remains intact and there are no signs of water ingress around the roof window frame. Clear any debris, moss, or leaves from the flashing and surrounding tiles to maintain water run-off. Do not attempt to modify or cut the flashing, as this will compromise its weather-tight properties. If damage is detected or the seal fails, the flashing should be replaced to prevent water damage to the roof structure and interior.
- Inspect flashing regularly for signs of damage or water ingress
- Clear debris and moss to maintain water run-off
- Do not modify or cut the flashing
- Replace if seal is compromised or damage is detected
Limitations and important notes
This flashing is designed exclusively for pitched tile roofs and is not suitable for other roof types such as slate, metal, or flat roofs. It is engineered for use with compatible VELUX roof windows and Sun Tunnel systems only; do not attempt to use it with other manufacturers' products. The 90mm recessed depth is fixed and cannot be adjusted on site. Improper installation or use with incompatible products will void any warranty and may result in water leaks and structural damage. Always verify product compatibility and follow manufacturer guidance before purchase and installation.
- For pitched tile roofs only
- Compatible with VELUX roof windows and Sun Tunnel systems exclusively
- Recessed depth is fixed at 90mm and cannot be adjusted
- Improper installation or incompatible use will compromise performance