Fixing and buying guide

Who this product is for

This flashing is essential for builders, roofers, and serious DIY installers planning to fit two SK06 VELUX roof windows on the same pitched roof. It suits projects where windows are positioned adjacent to one another or in mixed twin and single window configurations. If you are installing only one SK06 window, you will need a standard single-window flashing instead.

Compatibility and sizing

This flashing is manufactured specifically for SK06 VELUX windows and measures 114x118cm. Before ordering, confirm that both your roof windows are the SK06 size and that your pitched roof pitch falls within standard specifications for VELUX installations. The single-piece design accommodates both true twin installations (two identical windows) and combination setups (mixed window types), provided the primary window size is SK06.

• Compatible only with SK06 VELUX windows
• Dimensions: 114x118cm
• Suitable for standard pitched roof pitches
• Covers dual window or combination arrangements in one piece

What is included and pre-installation checks

You receive one twin and combination flashing unit. Before installation, inspect the flashing for any damage in transit and verify that your roof opening dimensions and window positions match the SK06 specification. Ensure the roof structure is sound, the pitch is appropriate, and that you have the correct VELUX window frames ready for fitting. Check that all necessary seals, fasteners, and additional weatherproofing materials are available before beginning work.

• One flashing unit per pack
• Inspect for transport damage before use
• Confirm roof pitch compatibility
• Verify SK06 window frame dimensions and positioning
• Gather all fasteners and sealants before starting

Installation overview

The single-piece design simplifies fitting compared to installing separate flashings. The flashing integrates with the roof membrane and window frames to create a continuous weatherproof seal across both window openings. Follow VELUX installation instructions carefully, ensuring the flashing is correctly positioned, secured, and sealed to prevent water ingress. Proper alignment of the flashing with the roof pitch and window frames is critical to maintaining watertight integrity.