How and where to use guide
VELUX Twin and Combination Flashings 94x160cm EKL PK10 S0312
Suitable applications and roof types
This flashing system is designed for pitched roof installations where VELUX windows are being fitted to standard tile or slate roof profiles. The 94x160cm dimensions are compatible with standard VELUX window sizes. The twin and combination flashing design allows flexibility across different roof tile and slate profiles, making it suitable for both new build projects and retrofit installations where existing roof structures need to accommodate a roof window. The system is not suitable for flat roofs or non-standard window dimensions.
- Pitched roof tile installations
- Pitched roof slate installations
- New build roof window installations
- Retrofit applications with standard window dimensions
- Roofs requiring weathertight window integration
Installation and integration
The flashing system integrates directly with the VELUX window frame during installation. The aluminium construction with integrated sealing components is designed to work as part of the complete window assembly. Installation should follow VELUX guidance to ensure the flashing sits correctly between the window frame and the roof surface, creating a continuous weathertight seal. The combination flashing capability allows adjustment to suit the specific tile or slate profile of your pitched roof, accommodating variations in roof material thickness and profile shape.
- Install as part of the VELUX window frame assembly
- Position flashing between window frame and roof surface
- Ensure integrated sealing components make full contact with roof profile
- Adjust combination flashing element to match your specific tile or slate profile
- Follow VELUX installation instructions for your window model
Performance benefits and maintenance
The integrated sealing components provide a weathertight barrier that prevents water ingress around the window perimeter, protecting the roof structure and interior spaces from damp and leaks. The aluminium material with thermal break design reduces thermal bridging at the window edge, helping maintain the thermal performance of your glazing installation. To maintain performance, inspect the flashing periodically to ensure sealing components remain in contact with the roof surface, particularly after severe weather or roof maintenance work. Keep the flashing clean and free from debris that could impede water drainage.
- Prevents water ingress and protects roof structure integrity
- Reduces thermal bridging for improved window energy performance
- Inspect sealing components annually for contact and condition
- Clear debris from flashing and roof surface around window
- Check after severe weather or roof work for any movement or damage
Limitations and important considerations
This flashing system is specifically designed for pitched roof installations and is not suitable for flat roofs or low-pitch applications. The 94x160cm dimensions are fixed and designed for standard VELUX window sizes; non-standard window dimensions will require alternative flashing solutions. The system is designed to work as an integrated component of the VELUX window assembly and should not be used as a standalone product. Ensure your roof profile is compatible with the combination flashing element before ordering, as the system is designed for standard tile and slate profiles.
- Not suitable for flat roofs or very low-pitch installations
- Fixed dimensions for standard VELUX windows only
- Must be used as part of complete VELUX window installation
- Verify roof tile or slate profile compatibility before installation
- Do not attempt to modify or adapt the flashing system