How and where to use guide
VELUX EDN MK08 2500 Conservation Recessed Slate Flashing
Typical applications
This recessed slate flashing is used to integrate VELUX roof windows and Sun Tunnel systems into slate roof coverings. It is suitable for residential properties requiring additional daylight or ventilation through the roof structure. The flashing works equally well in new build construction where roof windows are planned from the outset, and in refurbishment projects where windows are being retrofitted into existing slate roofs.
- New build residential properties with slate roof coverings
- Refurbishment and retrofit projects on existing slate roofs
- Installation of VELUX MK08 roof windows
- Installation of VELUX Sun Tunnel systems
- Properties requiring weather-tight roof penetrations with conservation-grade appearance
Installation and sizing
The EDN MK08 2500 flashing measures 780 × 1400 mm and is specifically designed for VELUX MK08 roof windows and compatible Sun Tunnel systems. The recessed design means the flashing sits within the slate roof plane rather than standing proud of it, creating a neat professional finish. Ensure the flashing is installed as part of the complete VELUX window system to guarantee weather-tightness and proper integration with your slate covering. The conservation-grade black finish is engineered to blend visually with slate roofing.
- Dimensions: 780 × 1400 mm — confirm compatibility with your specific VELUX MK08 window size
- Recessed installation sits flush with slate surface for neat appearance
- Must be used with compatible VELUX MK08 roof window or Sun Tunnel system
- Conservation-grade black finish maintains visual consistency with slate
- Follow VELUX installation instructions for weather-tight sealing
Weather protection and maintenance
The flashing provides a weather-tight seal when correctly installed as part of the VELUX system. The recessed design helps water run off naturally across the slate surface. Inspect the installation annually, particularly after severe weather, to ensure the seal remains intact. Check that slate tiles around the flashing are secure and that no debris has accumulated around the window opening. The conservation-grade finish requires no special maintenance beyond routine roof inspection.
- Inspect annually for signs of water ingress or seal degradation
- Check surrounding slate tiles are secure and properly seated
- Clear any debris or moss from around the window opening
- Ensure water runs freely across the flashing surface
- Do not attempt to modify or reposition the flashing once installed
On-site tips and limitations
This flashing is engineered specifically for slate roof integration and should not be used on other roof covering types. Proper installation is critical to weather-tightness — follow the complete VELUX installation guidance and ensure all seals and fixings are correctly applied. The recessed design means the flashing cannot be retrofitted to roofs where the slate pattern or roof structure does not allow for proper integration. Plan installation during dry weather to ensure effective sealing. This product forms part of a complete system and should not be used in isolation.
- Designed for slate roofs only — not suitable for other roof coverings
- Install only as part of the complete VELUX MK08 window or Sun Tunnel system
- Carry out installation in dry conditions for effective sealing
- Do not attempt to adapt or modify the flashing for non-standard applications
- Consult VELUX technical guidance if roof structure is non-standard or heavily pitched