How and where to use guide
VELUX Twin and Combination Flashings 134x98cm EBW UK04 0021B
Installation and Application
These flashings are installed around the complete perimeter of the Velux roof window opening to seal the edges and prevent water penetration. The 134x98cm timber sheets provide coverage for typical UK domestic roof window installations. Installation must follow Velux guidance to ensure the weather-tight seal functions correctly and the window performs as intended. The flashings work across different roof pitches and configurations, making them suitable for most standard residential applications.
- Install around the full perimeter of the window opening
- Suitable for various roof pitches and configurations
- Follow Velux installation guidance for correct sealing
- Ensure flashings are properly secured to prevent movement
On-Site Cutting and Sizing
The 134x98cm flashings can be cut and adapted to fit your specific window opening dimensions using standard hand tools. A saw or mitre box will cleanly cut the timber to length without damaging the material. Measure your window opening carefully before cutting to avoid waste. Cut edges should be clean and square to ensure proper fit and sealing around the window perimeter.
- Measure window opening dimensions before cutting
- Use a saw or mitre box for clean, accurate cuts
- Ensure cut edges are square for proper fit
- Cut on a stable work surface to maintain accuracy
Material Quality and Durability
These flashings are manufactured from F16 timber grade or higher, ensuring adequate strength and weather resistance for roof window applications. The timber construction provides good durability when properly installed and maintained. Ensure the timber remains dry during storage and installation to prevent swelling or warping that could compromise the weather-tight seal.
- F16 grade timber provides suitable strength and durability
- Store flashings in dry conditions before installation
- Protect timber from excessive moisture during work
- Inspect for damage or defects before installation
Maintenance and Limitations
Once installed, the flashings require no special maintenance beyond standard roof inspection routines. Check periodically that the seal remains intact and that no gaps have developed around the window perimeter. The flashings are designed specifically for Velux roof window installations and should not be used for other window types or applications. Always follow manufacturer guidance to maintain warranty and performance guarantees.
- Check seals regularly during roof inspections
- Use only with Velux roof windows as specified
- Do not adapt for non-Velux window installations
- Refer to Velux guidance for any modifications or repairs