Fixing and buying guide

Who this product is for

This flashing is intended for roofers and experienced DIY installers planning to fit two VELUX roof windows in a paired configuration. It suits both side-by-side and vertical stacked layouts where windows are separated by a standard 100mm gap. Use this product if your roof tiles have a maximum profile height of 120mm and you want to avoid custom flashing fabrication on site.

Compatibility and sizing

The EKW MK08 S0122 is a duo (two-window) configuration flashing. Check that your roof tile profile does not exceed 120mm in depth, as this flashing is engineered for tiles within this specification. The 100mm gap spacing is fixed and suits standard roof layouts; if your window spacing differs, you will need a different flashing configuration from the VELUX range (such as twin, coupled, triple or quatro options). Confirm your window model and roof tile type before ordering.

• Tile profile maximum: 120mm
• Gap between windows: 100mm (fixed)
• Flashing dimensions: 78cm width × 140cm height
• Duo configuration only (two windows)

What is included and pre-installation checks

This product is supplied as a prefabricated flashing unit ready for installation. Before fitting, verify that your roof opening dimensions and window spacing match the 78cm × 140cm flashing size and 100mm gap specification. Inspect the flashing for any damage in transit. Ensure your roof structure is sound, level and ready to receive the flashing, and that you have the correct VELUX windows to hand. Have all necessary roofing tools and sealants available before beginning work.

• Supplied as complete prefabricated unit
• No on-site fabrication required
• Check roof opening dimensions match flashing size
• Verify tile profile is 120mm or less
• Inspect for transit damage before installation

Installation overview

This is a prefabricated unit designed for straightforward installation by qualified roofers. The flashing integrates with your roof tile layout and the two VELUX windows positioned at the 100mm gap spacing. Follow VELUX installation instructions supplied with the product, ensuring the flashing is properly bedded into the roof structure and sealed to prevent water ingress. Professional installation is recommended to guarantee weathertightness and compliance with building regulations.