How and where to use guide
VELUX Twin and Combination Flashings 55x118cm EKJ CK06 S0021E
Where to use this flashing
This twin and combination flashing is designed specifically for pitched tile roofs where VELUX roof windows or Sun Tunnel systems are being installed. The CK06 size (550×1180mm) suits standard roof window openings. Use this flashing in both new build construction and refurbishment projects where you need to integrate a roof window into an existing or new tiled pitched roof. The coupled recessed design makes it suitable for applications where a neat, professional finish is required and the roof plane must remain visually consistent.
- Pitched tile roofs with standard tile thicknesses
- New build roof window installations
- Refurbishment and retrofit projects
- Installations requiring weather-tight sealing around roof windows
- Projects where visual roof finish is important
Installation and application
The flashing must be installed as part of a complete VELUX roof window system using compatible components. The 90mm recessed profile is engineered to accommodate common UK roof tile thicknesses, sitting flush with the roof plane once installed. Position the flashing around the roof window opening before tiling or integrate it into existing tilework during refurbishment. The coupled recessed design ensures the flashing works with the window frame to create a continuous weather-tight seal. Follow VELUX installation guidance specific to your roof window model and ensure all components are compatible before commencing work.
- Install as part of a complete compatible VELUX roof window system
- Position flashing to accommodate 90mm recess depth for standard tile thicknesses
- Ensure weather-tight seal is formed between flashing and window frame
- Use with matching VELUX roof window and Sun Tunnel components only
- Refer to VELUX installation instructions for your specific window model
Weather protection and maintenance
The coupled recessed design creates a weather-tight seal that prevents water ingress and condensation around the roof window opening. This is critical for protecting the building interior and ensuring the window system performs reliably in UK weather conditions. After installation, inspect the seal periodically to ensure it remains intact, particularly after severe weather. Keep the flashing and surrounding tilework clear of debris and moss growth, which can impede water drainage. The recessed profile should sit flush with the roof plane; if the flashing becomes displaced or damaged, arrange for prompt repair to maintain weather protection.
- Weather-tight seal prevents water ingress around the window
- Inspect seal regularly, especially after severe weather
- Keep flashing and surrounding area clear of debris and moss
- Ensure water drains freely around the flashing
- Repair or replace promptly if flashing becomes damaged or displaced