How and where to use guide
VELUX Twin and Combination Flashings 94x140cm EKP PK08 0021E
Typical applications and roof compatibility
These flashings are designed for pitched roof installations where VELUX rooflights are being fitted into timber-framed structures. The twin and combination design accommodates various roof configurations and pitch angles commonly found in UK residential and commercial properties. They work effectively with standard timber grades specified in building regulations, making them suitable for new builds, renovations, and extensions where VELUX rooflights are the specified product.
- Pitched roof installations with timber frame structures
- Compatible with F16, F24, and F32 timber grades
- Suitable for multiple roof types and varying pitch angles
- Both new build and retrofit rooflight installations
Installation and positioning
The flashing must be positioned around the VELUX rooflight frame before the roof covering is installed. The 94x140cm size is specific to the EKP PK08 0021E system, so ensure you are using the correct flashing size for your rooflight model. The twin and combination design allows you to select the appropriate configuration for your specific roof layout. Position the flashing so it sits flush against the rooflight frame and extends under the roof tiles or slates above and over the roof covering below, creating a continuous weather-tight barrier.
- Install flashing before roof covering is laid
- Ensure correct size match to EKP PK08 0021E rooflight system
- Position to overlap roof tiles above and below the rooflight
- Check timber grade compatibility before installation
Weather-tightness and maintenance
The primary function of these flashings is to provide a secure, weather-tight seal that prevents water penetration around the rooflight opening. Once correctly installed, the flashing requires minimal maintenance. Periodically inspect the seal around the rooflight frame, particularly after severe weather, to ensure no debris has compromised the weather-tight integrity. Keep gutters and roof surfaces clear of moss and debris that could direct water towards the flashing edges.
- Verify weather-tight seal is complete before roof covering installation
- Inspect periodically for debris or damage
- Keep roof surfaces clear of moss and organic growth
- Check flashing edges remain sealed and undamaged
On-site handling and storage
Store flashings flat and protected from weather before installation. Handle carefully to avoid bending or creasing the flashing material, as this could compromise the weather-tight seal once installed. Ensure the rooflight frame and surrounding timber are clean and dry before positioning the flashing. If working in wet conditions, allow surfaces to dry fully to ensure proper adhesion and sealing around the rooflight perimeter.
- Store flat and protected from weather exposure
- Handle carefully to prevent damage to flashing edges
- Ensure rooflight frame and timber are clean and dry
- Avoid installation in wet conditions if possible