Fixing and buying guide
VELUX Twin and Combination Flashings 94x160cm EBL PK10 0021B
What these flashings are for
Twin and Combination Flashings are purpose-designed to integrate roof windows into pitched roof structures. They bridge the gap between the window frame and your existing roof covering, creating a weatherproof seal that prevents water penetration. The twin and combination design allows flexibility in how you configure the flashing depending on your specific roof layout and whether you are installing single or multiple windows side by side.
- Weatherproofing seal for pitched roof window installations
- Suitable for tile, slate, and other pitched roof coverings
- Twin and combination configuration for single or adjacent window installations
- Essential for compliance with UK building regulations on roof penetrations
Sizing and compatibility
These flashings are sized at 94x160cm and are designed for standard VELUX roof window openings. Before ordering, confirm that your roof window opening matches this size specification. The pack contains 10 units, making it suitable for multiple installations or for keeping spares on site. Check your VELUX window documentation to verify compatibility with your specific model.
- 94x160cm dimensions for standard roof window openings
- Pack of 10 units for multiple installations
- Compatible with VELUX roof window systems
- Verify your window model matches this flashing size before purchase
Pre-installation checks
Before fitting, inspect the flashing for any damage and ensure your roof structure is sound and ready to receive the window. Check that your roof pitch is suitable for pitched roof window installation and that the opening is correctly sized and squared. Ensure you have adequate access and working space on the roof, and that weather conditions are suitable for installation. Have all necessary tools and additional materials such as roofing sealant and fixings ready before starting work.
- Inspect flashings for damage before installation
- Verify roof opening is correct size and properly squared
- Check roof pitch is suitable for pitched roof window installation
- Ensure roof structure is sound and weather-tight ready for work
- Gather all tools, fixings, and sealants before starting
Installation considerations
Correct alignment with your roof pitch and existing tile or slate configuration is essential for effective weatherproofing. The flashing must be carefully positioned to ensure water runs away from the window frame and down the roof surface. Installation typically requires removal and reinstatement of roof coverings around the window opening, so plan for this disruption. If you are unfamiliar with roof work, consider engaging a qualified roofer or installer experienced with VELUX systems to ensure proper installation and maintain any warranty.
- Careful alignment with roof pitch is critical for weatherproofing
- Flashing must be integrated with existing tile or slate layout
- Installation involves temporary removal of roof coverings
- Professional installation recommended for complex roof configurations
- Proper installation is essential for warranty compliance