Fixing and buying guide
VELUX Twin and Combination Flashings 94x140cm EKN PK08 S0021E
What this product is and who needs it
This is a recessed coupling flashing for VELUX roof windows and Sun Tunnel systems installed into slate tile roofs. It is designed for builders, roofers, and serious DIY installers undertaking new build or refurbishment work where daylight or ventilation solutions must be integrated into existing or new slate roof coverings. The flashing ensures a weather-tight seal and maintains visual consistency across the roof finish.
- Twin and combination format for paired or multi-unit roof window installations
- Recessed 8mm design sits flush with slate tiles for a professional appearance
- Engineered for UK roof conditions and long-term durability
- Supports coordinated daylight and ventilation solutions
Compatibility and sizing
The EKN PK08 S0021E is compatible with standard VELUX roof window and Sun Tunnel ranges. The 940×1400mm dimensions are sized for typical roof pitches and slate tile applications. Before ordering, confirm that your VELUX roof window or Sun Tunnel model is compatible with this flashing type and that your roof pitch and tile format match the specified dimensions. Check your roof window documentation or contact VELUX technical support if you are uncertain.
- Flashing dimensions: 940×1400mm
- Recess depth: 8mm
- Application: Slate roof tiles only
- Compatible with standard VELUX roof window and Sun Tunnel ranges
Pack contents and pre-installation checks
Verify that you have received the correct product code (EKN PK08 S0021E) and that all components are present and undamaged. Inspect the flashing for any dents, cracks, or manufacturing defects before installation. Confirm that your roof structure, pitch, and slate tile format are suitable for this recessed coupling system. Check that the roof window or Sun Tunnel unit is on site and ready for integration.
- Check product code matches your order
- Inspect flashing for damage or defects
- Verify roof pitch and slate tile compatibility
- Ensure roof window or Sun Tunnel unit is available for coupling
Installation and weather-tight sealing
The recessed coupling system is engineered to create a weather-tight seal between the flashing and slate roof tiles. Installation must follow VELUX technical guidance to ensure proper water drainage and prevent ingress. The 8mm recess allows the flashing to sit flush with the tile surface, maintaining roof integrity and visual finish. Professional installation is recommended to guarantee long-term performance and durability in UK weather conditions.
- Follow VELUX installation instructions for recessed coupling system
- Ensure proper water drainage and seal integrity
- 8mm recess design provides flush integration with slate tiles
- Professional installation recommended for optimal performance