Fixing and buying guide

Who this product is for

This flashing system is for builders, roofers, and experienced DIY installers undertaking dual roof window installations on pitched roofs. It suits projects where two VELUX windows are positioned side by side or in combination layouts, and where you need a single integrated flashing solution rather than multiple individual components.

Compatibility and sizing

The 78x118cm flashing is designed for pitched roof installations with standard tile or slate coverings. Before ordering, confirm that your roof windows are positioned to accommodate this flashing size and that your roof pitch and covering type match the product specification. Check your VELUX window model codes to ensure compatibility with the EBP MK06 0021B flashing system.

• Suitable for pitched roofs only, not flat roofs
• Compatible with standard tile and slate roof coverings
• Designed for dual or combination window arrangements
• Dimensions: 78x118cm

What is included and pre-installation checks

This is a complete integrated flashing unit that arrives as a pre-engineered assembly, reducing the number of separate components you need to handle on site. Before installation, inspect the flashing for any damage during transit, verify the product code matches your order, and ensure you have the correct window frames and roof structure prepared. Check that the roof opening dimensions and spacing between windows align with the 78x118cm flashing size.

• Inspect flashing for transport damage before fixing
• Confirm product code EBP MK06 0021B matches your specification
• Verify roof opening dimensions and window spacing
• Ensure roof structure is sound and ready to receive flashing

Fixing and installation

Careful alignment is critical for a weathertight seal. Position the flashing so it sits evenly between both window frames and is square to the roof structure. Secure the flashing firmly to the roof structure using appropriate fixings for your roof type, ensuring the seal between the flashing and roof surface is complete. The integrated design means fewer assembly steps on site, but you must follow VELUX installation guidance to achieve proper weather protection and thermal performance. If you are unsure about roof work, consult a qualified roofer.

• Align flashing carefully between both window frames
• Ensure flashing is square to roof structure
• Secure firmly to roof structure with appropriate fixings
• Verify weathertight seal around entire perimeter
• Follow VELUX installation instructions for your specific window models