How and where to use guide
VELUX Twin and Combination Flashings 55x78cm EBW CK02 0021C
Typical applications and roof types
These combination flashings are designed for pitched roof installations where VELUX roof windows are being fitted. The 55x78cm dimensions suit standard domestic and commercial roof tile and slate applications. They work with compatible VELUX roof window ranges to provide integrated support and weatherproofing at the window opening.
- Pitched roof tile installations
- Slate roof applications
- Standard domestic roof window openings
- Use only with compatible VELUX roof window systems
Installation and positioning
The combination flashing must be positioned around the roof window opening to manage both water shedding and structural load distribution. The dual-function design means it replaces separate flashing components, simplifying the installation sequence. Ensure the flashing is correctly aligned with the window frame and roof plane before securing, as proper positioning is critical for effective weatherproofing and load support.
- Position flashing around the complete window opening
- Align with window frame and roof plane
- Secure according to VELUX installation instructions
- Ensure overlap with roof covering materials for water shedding
Weatherproofing and maintenance
The integrated weatherproofing function manages water runoff from the roof surface around the window opening. After installation, inspect the flashing regularly to ensure it remains properly seated and that roof tiles or slates are correctly overlapped. Clear any debris from around the flashing to maintain effective water drainage and prevent pooling.
- Check flashing is properly seated after installation
- Ensure roof tiles or slates overlap the flashing correctly
- Clear debris and leaves regularly to maintain drainage
- Inspect after severe weather for any movement or damage
Limitations and on-site considerations
This flashing is specifically designed for use with compatible VELUX roof window ranges and pitched roof applications. It is not suitable for flat roofs or non-standard window installations. Ensure you have the correct window size and roof type before ordering, as the 55x78cm dimensions are fixed. Always refer to VELUX installation guidance for your specific window model to confirm compatibility.
- Not suitable for flat roof installations
- Designed for pitched roofs only
- Confirm VELUX window compatibility before installation
- Fixed dimensions mean sizing must match your window opening