How and where to use guide
VELUX EDL CK01 2000 Slate flashing,single,pro+ inc BDX 2000,grey,55x70
Typical applications and installation location
This flashing kit is used exclusively for installing single VELUX CK01 roof windows through slate roof coverings. The system is positioned at the roof penetration where the window frame meets the slate tiles, creating a weathertight seal that prevents water ingress and maintains the structural integrity of the roof. The grey finish ensures the flashing blends visually with slate roofing materials. Installation requires the window opening to be prepared to the correct dimensions and the existing slate tiles to be carefully removed and repositioned around the flashing frame.
- Slate roof installations only
- Single window configurations
- CK01 window size compatibility
- Roof penetration sealing and integration
Installation and setup
The flashing kit must be installed during or before the roof window is fitted into the prepared opening. The Pro+ flashing component forms the primary weatherproofing layer, whilst the BDX 2000 connector provides structural support and additional sealing. The 55×70 dimensions are matched precisely to CK01 window frames. Installation involves positioning the flashing around the window frame, securing it to the roof structure, and carefully re-laying slate tiles around the flashing edges. All joints and edges must be sealed to prevent water penetration. Professional installation is strongly recommended to ensure proper weatherproofing and compliance with building regulations.
- Install flashing before or during window fitting
- Use Pro+ flashing as primary weatherproofing layer
- Secure BDX 2000 connector to roof structure
- Re-lay slate tiles carefully around flashing perimeter
- Seal all joints and edges thoroughly
Maintenance and durability
The professional-grade components in this kit are designed for long-term performance in slate roof environments. Periodically inspect the flashing seal, particularly after severe weather or high winds, to ensure no water ingress has occurred around the window frame. Check that slate tiles remain properly seated around the flashing edges and that no gaps have developed. The grey finish will weather naturally over time but requires no special treatment. If any damage to the flashing or sealant is detected, repair or reseal promptly to maintain weatherproofing integrity.
- Inspect flashing seal regularly after severe weather
- Check slate tile seating around flashing edges
- Reseal any gaps or damaged joints immediately
- No special maintenance required for grey finish
Important limitations and on-site considerations
This flashing kit is designed exclusively for slate roof installations and CK01 window sizes. It is not suitable for other roof types such as tiles, felt, or metal coverings, nor for different window sizes. The kit includes all necessary components for a complete installation, but professional fitting is essential to achieve proper weatherproofing and avoid future water damage. Ensure the roof structure can support the window weight and that adequate ventilation is maintained around the installation. Building Regulations approval and structural assessment may be required before installation.
- Slate roofs only—not suitable for other roof types
- CK01 window size only
- Professional installation strongly recommended
- Verify roof structure can support window weight
- Check Building Regulations compliance before fitting