Fixing and buying guide

Who this product is for

This flashing is for builders, roofers, and experienced DIY installers carrying out roof window installations in pitched tiled roofs. It is essential for anyone fitting a VELUX roof window to a tiled pitch and wanting to ensure a professional, weather-tight finish that meets building standards.

Compatibility and sizing

This flashing is designed for roof windows in tiled pitches where the tile profile does not exceed 120mm in height and where there is approximately 100mm of gap between the window frame and the tile surface. The 78 × 140cm dimensions suit standard roof window openings. Before ordering, confirm your tile profile height and the gap measurement around your window opening to ensure this flashing is the correct fit for your installation.

• Maximum tile profile: 120mm
• Gap allowance: 100mm
• Flashing dimensions: 78 × 140cm
• Includes both upper (EKW MK08 2007ME) and lower (EDW MK08 2000) components

What is included and pre-installation checks

This is a complete duo flashing set, meaning both the upper and lower flashing components are supplied together. No additional flashing parts are required for a standard installation. Before fitting, inspect the flashing for any damage in transit, check that your roof opening dimensions match the 78 × 140cm size, and verify that your tile profile and gap measurements fall within the 120mm profile and 100mm gap specification. Ensure the roof surface is clean and dry, and that the window frame is correctly positioned and level.

• Complete set with upper and lower components included
• Check tile profile does not exceed 120mm
• Verify 100mm gap allowance around window frame
• Inspect flashing for transport damage before installation
• Ensure roof surface is clean and dry

Installation and weather protection

The duo flashing system is engineered to create a weather-tight seal that directs water away from the window frame and into the tile courses below. The upper and lower components work together to overlap the tile profile and provide continuous protection. Proper installation is critical to avoid water ingress and maintain the integrity of the roof. If you are not confident in roof work, engage a qualified roofer or VELUX-approved installer to carry out the fitting.