How and where to use guide
VELUX Twin and Combination Flashings 55x78cm EKN CK02 S0021E
Typical applications and suitability
This flashing is specifically engineered for Velux roof vents of 55cm × 78cm dimensions installed in pitched roof structures. It is suitable for domestic properties where secure weatherproofing around the vent opening is essential. The flashing works with FSC timber grades 32, 44, and 47, covering standard timber specifications used in UK roof construction. Whether your roof timbers are finished in oak, pine, or spruce, this flashing will integrate properly with your existing roof structure.
- Domestic pitched roof installations with 55cm × 78cm Velux vents
- FSC timber grades 32, 44, and 47 compatibility
- Oak, pine, and spruce timber finishes
- New installations and replacement flashing work
Installation and positioning
The twin and combination flashing design allows straightforward installation around your Velux roof vent. Position the flashing so it sits flush against the roof vent frame, ensuring the flashing extends adequately under the roof covering above the vent and over the roof covering below it. This overlap is critical for proper water shedding and weatherproofing. The flashing should be secured firmly to the roof structure and sealed appropriately to prevent water penetration at all edges and joints.
- Position flashing flush against the 55cm × 78cm vent frame
- Ensure adequate overlap of roof covering above and below the vent
- Secure flashing firmly to roof structure
- Seal all edges and joints to prevent water ingress
Durability and maintenance
The EKN CK02 S0021E features durable construction designed to withstand UK weather conditions and provide reliable long-term weatherproofing. Once installed, the flashing requires minimal maintenance. Periodically inspect the flashing and surrounding roof area, particularly after severe weather, to ensure the seal remains intact and no debris has accumulated around the vent opening. Keep gutters and roof surfaces clear to allow proper water drainage away from the flashing.
- Inspect flashing periodically for damage or deterioration
- Check seals remain intact after severe weather
- Keep roof area around vent clear of debris and moss
- Ensure gutters and drainage channels function properly
Important limitations and considerations
This flashing is designed exclusively for 55cm × 78cm Velux roof vents and will not fit other vent sizes or manufacturers. Verify your roof vent dimensions before ordering. Installation should only be undertaken by competent persons with appropriate roof safety knowledge and equipment. Working at height on pitched roofs carries significant risk; ensure proper scaffolding, harnesses, and safety measures are in place. If you are uncertain about installation, engage a qualified roofer to complete the work.
- Fits only 55cm × 78cm Velux vents; check dimensions before purchase
- Installation requires competent persons with roof safety knowledge
- Proper scaffolding and fall protection equipment essential
- Consult a qualified roofer if uncertain about installation