How and where to use guide
VELUX Twin and Combination Flashings 134x140cm EKW UK08 S0312
Where to use this flashing
This flashing is designed specifically for UK08 VELUX rooflight installations on residential and commercial properties. It performs effectively on flat roofs, pitched roofs, and roof terraces, providing reliable weatherproofing in all UK climate conditions. The flashing accommodates timber frame grades F16, F24, and F36, so confirm your roof timber specification before ordering. The 134x140cm dimensions are engineered to provide proper coverage around the UK08 rooflight opening, ensuring complete protection at the roof penetration point.
- Flat roofs and roof terraces
- Pitched roof installations
- UK08 VELUX rooflight sizes only
- Timber grades F16, F24, and F36
Installation and application
Install the flashing during rooflight fitting to ensure a continuous watertight seal. Position the flashing around the rooflight opening so it integrates with both the rooflight frame and the surrounding roof structure. The plastic construction allows for secure fixing to the timber frame whilst maintaining flexibility to accommodate minor roof variations. Ensure the flashing sits flush against the roof surface with no gaps or lifted edges that could allow water penetration. Pay particular attention to the overlap with roof covering materials—the flashing must extend sufficiently to direct water away from the rooflight opening.
- Install during rooflight fitting, not as a retrofit solution
- Position flashing to overlap roof covering materials properly
- Ensure no gaps between flashing and rooflight frame
- Check that flashing sits flush across the entire roof surface
Durability and maintenance
The durable plastic construction resists corrosion, UV damage, and weather wear, making it suitable for long-term UK outdoor exposure. Inspect the flashing annually, particularly after severe weather, to check for any cracks, lifting, or separation from the rooflight frame or roof surface. Clear any debris, moss, or lichen that accumulates around the flashing edges, as these can trap moisture and compromise the seal. The plastic material requires no painting or coating, but ensure any sealant or mastic used during installation remains intact and flexible.
- Inspect annually for cracks or lifting edges
- Clear debris and moss from flashing edges
- Check that sealant or mastic remains flexible and intact
- No painting or treatment required
Limitations and on-site considerations
This flashing is engineered specifically for UK08 VELUX rooflights—do not use with other rooflight sizes or manufacturers' products. The flashing is a component of a complete rooflight installation system; it must be used alongside appropriate roof covering materials and proper ventilation provisions. On pitched roofs, ensure adequate roof pitch to allow water drainage; on flat roofs, confirm that the roof structure includes proper fall and drainage to prevent water pooling. The plastic material is durable but not load-bearing, so do not place heavy materials or walk on the flashing itself.
- Compatible with UK08 VELUX rooflights only
- Not suitable for other rooflight brands or sizes
- Requires proper roof drainage and fall
- Do not walk on or place loads on the flashing