Fixing and buying guide

What this product is and who it is for

This is a complete flashing system for VELUX roof windows. It is designed for builders, roofers, and experienced DIY customers installing or replacing a 66x118cm roof window on a pitched roof. The twin and combination design means the upper and lower flashing elements work together as one integrated unit, making it easier to position correctly and seal effectively against weather.

Compatibility and sizing

This flashing is engineered exclusively for 66x118cm VELUX roof windows on pitched roofs. It is compatible with standard tile and slate roof coverings. Before ordering, confirm your roof window dimensions match 66x118cm and that your roof pitch and covering type (tiles or slates) are within the standard range this flashing is designed for. Do not use this flashing with flat roofs or windows of different dimensions.

• Window size: 66x118cm
• Roof type: Pitched roofs only
• Compatible coverings: Tiles and slates
• Model: EKL FK06

Pre-installation checks

Before fitting, inspect the roof opening to ensure it is the correct size for a 66x118cm window and that the surrounding roof structure is sound and free from rot or damage. Check that roof tiles or slates are in good condition around the opening area, as damaged coverings must be replaced before flashing installation. Ensure you have adequate access and safety equipment for working at height on a pitched roof.

• Verify roof window opening dimensions match 66x118cm
• Check roof structure is sound and free from decay
• Inspect existing roof coverings for damage
• Confirm roof pitch is suitable for pitched roof flashing

Installation overview

The integrated design of this twin and combination flashing simplifies the fitting process compared to separate upper and lower flashings. The flashing sits around the roof window frame and integrates with your tile or slate covering to create a weathertight seal. Proper positioning and securing of the flashing is essential to prevent water ingress. If you are unfamiliar with roof window flashing installation, consult VELUX fitting instructions or engage a qualified roofer to ensure correct installation and maintain your roof warranty.