Fixing and buying guide
VELUX Twin and Combination Flashings 66x118cm EKW FK06 S0122
Who this product is for
This flashing is for builders, roofers, and serious DIY installers fitting two VELUX roof windows in a vertical stacked configuration on a single roof slope. It is suitable for new roof installations or retrofitting where two windows need to be positioned one above the other with controlled spacing.
Compatibility and sizing
This flashing is compatible with VELUX roof windows measuring 66cm wide by 118cm tall (FK06 size). It is designed for clay and concrete roof tiles with a maximum profile height of 120mm. The flashing accommodates a 100mm gap between the upper and lower windows, which is the fixed spacing for this duo configuration. Check your tile profile height before ordering to ensure compatibility.
- Window size: 66cm wide × 118cm tall (FK06)
- Maximum tile profile: 120mm
- Gap between windows: 100mm (fixed)
- Suitable for clay and concrete tiles only
What is included and pre-installation checks
The EKW FK06 S0122 is a complete prefabricated flashing unit with integrated weatherproofing. Before installation, verify that your roof tiles have a profile height not exceeding 120mm, measure the exact position where both windows will sit to confirm the 100mm gap is appropriate for your layout, and ensure the roof structure can support two windows at the specified spacing. Check that the flashing dimensions (66cm wide × 118cm tall) align with your installation requirements.
- Measure tile profile height and confirm it does not exceed 120mm
- Verify roof window positions allow for 100mm vertical gap
- Confirm flashing dimensions suit your roof layout
- Inspect roof structure for adequate support of two stacked windows
Installation advantage
Prefabricated flashings like the EKW FK06 S0122 offer a significant advantage over site-built alternatives. The integrated weatherproofing is factory-engineered and tested, reducing the risk of poor sealing and water ingress. Installation is more straightforward and faster than building flashings on site, which saves time and labour costs on the roof.