How and where to use guide
VELUX Twin and Combination Flashings 55x118cm EKN CK06 S0021E
Typical applications and installation
This coupled flashing is specifically engineered for use with compatible VELUX roof window and Sun Tunnel systems on slate-covered roofs. It is suitable for both new build projects and refurbishment work where you are installing or upgrading roof windows. The flashing dimensions of 550 x 1180mm accommodate standard VELUX window sizes in this range. Installation should follow VELUX guidance to ensure the flashing is correctly positioned and sealed before slate courses are laid or re-laid around the window opening. The recessed design means the flashing sits 8mm below the surface of the slate, allowing roof tiles or slates to overlap neatly and maintain visual consistency across the roof plane.
- Install on slate roof coverings where VELUX roof windows or Sun Tunnel systems are required
- Suitable for new build and refurbishment projects
- Use only with compatible VELUX roof window and Sun Tunnel systems
- Position flashing before laying or relaying slate courses around the window opening
- Ensure the recessed 8mm design allows slate to overlap correctly
Weather protection and roof integrity
The primary function of this flashing is to create a weather-tight seal that protects against water ingress and maintains the integrity of the roof structure. The coupled recessed design works in conjunction with the VELUX window frame to channel water away from the opening and down the roof slope. Proper installation is critical to ensure this protection is effective. The flashing must be fully bedded and sealed according to VELUX instructions, and all joints and overlaps must be weather-tight. Once correctly installed, the flashing will perform reliably in typical UK roof conditions, including heavy rain, wind-driven moisture, and freeze-thaw cycles.
- Flashing creates a weather-tight seal to prevent water ingress
- Recessed design allows water to run down the roof slope naturally
- Must be fully bedded and sealed during installation
- Engineered for reliable performance in UK weather conditions
On-site handling and compatibility
Before ordering, confirm that this flashing is compatible with your specific VELUX roof window or Sun Tunnel model and size. The EKN CK06 S0021E is a twin and combination coupled flashing, meaning it is designed to work with paired or multiple window systems. Check the product code and VELUX documentation to verify compatibility with your installation. On site, handle the flashing carefully to avoid damage to the recessed edges or sealing surfaces. Store in a dry location until installation. Do not attempt to modify or cut the flashing, as this will compromise the weather-tight seal and void performance guarantees.
- Verify compatibility with your VELUX roof window or Sun Tunnel model before installation
- Handle carefully to avoid damage to recessed edges and sealing surfaces
- Store dry until ready to install
- Do not modify or cut the flashing