How and where to use guide
VELUX Standard Flashings 78x98cm EDW MK04 0000
Suitable applications and roof types
This standard flashing is designed for pitched roof installations using traditional tile or slate roofing materials. It is sized exclusively for 78x98cm VELUX roof windows and will only function correctly with compatible VELUX window models. Before purchase, verify that your window dimensions match exactly and that your roof construction uses standard tile or slate coverings. The flashing integrates with existing roofing materials to maintain the weathertight envelope of your roof.
- Pitched roof installations only
- Compatible with tile and slate roof applications
- Sized for 78x98cm VELUX windows
- Verify window model compatibility before installation
Installation and alignment
Correct installation is critical for weathertight performance. The flashing must be carefully aligned with your roof pitch and integrated seamlessly with existing roof tiles or slates. Water must be able to drain freely over the flashing and down the roof slope without pooling or backing up behind the window frame. Poor alignment or incorrect integration with surrounding roofing materials will compromise the weathertight seal and lead to water ingress. Take time to ensure the flashing sits flush against the roof structure and that all edges are properly sealed.
- Align flashing carefully with roof pitch angle
- Integrate with existing tiles or slates to maintain water drainage
- Ensure no water pooling or backup behind the window frame
- Check that all edges sit flush and are properly sealed
Maintenance and durability
The VELUX Standard Flashing EDW MK04 is constructed for durability and long-term roof performance. Periodically inspect the flashing and surrounding roof area to ensure the weathertight seal remains intact. Check that tiles or slates have not shifted, exposing flashing edges, and that debris has not accumulated around the window frame. Clear any moss, leaves, or dirt that could trap moisture. If you notice signs of water staining on internal ceilings or walls below the window, inspect the flashing immediately for gaps or damage.
- Inspect flashing and surrounding roof regularly
- Clear debris and moss from around the window frame
- Check that roof tiles or slates remain properly aligned
- Address any signs of water ingress immediately
Important limitations and on-site considerations
This is a standard flashing designed for conventional pitched roof construction. It is not suitable for flat roofs, curved roof profiles, or non-standard roof pitches. Do not attempt to use this flashing with roof window sizes other than 78x98cm or with incompatible VELUX models. Installation should be carried out by experienced roofers familiar with your specific roof type and pitch. Improper installation will void the weathertight performance and may result in costly water damage. Always consult the detailed installation instructions provided with the product and verify compatibility with your existing roof structure before beginning work.
- Not suitable for flat roofs or non-standard pitches
- Size-specific: 78x98cm windows only
- Requires experienced roofer installation
- Consult detailed instructions and verify roof compatibility