How and where to use guide
VELUX Insulation Collar 94x140cm BDX PK08 2000
Suitable applications and where to install
This insulation collar is designed specifically for use with VELUX PK08 2000 roof windows and compatible Sun Tunnel daylight systems. It is suitable for pitched roofs in both new build and refurbishment projects. The collar creates a professional, visually consistent finish at the roof line whilst maintaining the thermal integrity of your building envelope. It can be used in domestic and light commercial applications where a PK08 2000 sized opening has been created in the roof structure.
- New build roof window installations in pitched roofs
- Refurbishment projects upgrading existing roof windows
- Compatible Sun Tunnel system installations
- Domestic and light commercial applications
- Use only with VELUX PK08 2000 roof window range
Installation and on-site tips
The insulation collar must be installed around the roof window frame before final sealing and finishing. Ensure the roof opening is correctly sized at 940x1400mm to match the collar dimensions. The collar should be positioned to create a continuous seal between the window frame and the roof structure, with all edges properly secured and sealed to prevent air and water penetration. Follow VELUX installation guidance for your specific roof type and construction method. Coordinate installation with roofing work to ensure the collar integrates properly with your roof covering and flashing system.
- Verify roof opening size matches 940x1400mm collar dimensions
- Install collar around window frame before final roof sealing
- Ensure all edges are properly secured and sealed
- Coordinate with roofing and flashing installation
- Refer to VELUX installation instructions for your roof construction type
Performance and maintenance
The collar is engineered to provide reliable thermal and weather-tight performance in UK roof conditions. Once installed, the collar requires minimal maintenance. Periodically check that the seal remains intact and that no gaps have developed around the frame perimeter, particularly after severe weather or roof work. Keep the area around the collar clear of debris and ensure that roof drainage is not obstructed. The thermal insulation properties are maintained throughout the life of the installation provided the weather-tight seal is preserved.
- Check seal integrity periodically, especially after severe weather
- Keep the collar area clear of debris and obstructions
- Ensure roof drainage is not blocked by the collar installation
- Do not attempt to modify or cut the collar after installation
- Maintain compatibility with your roof covering and flashing system