Fixing and buying guide
VELUX Standard Flashings 78x98cm EDW MK04 0000
Is this the right flashing for your window?
This flashing is sized exclusively for 78x98cm VELUX roof windows. Check your window dimensions carefully before ordering. The EDW MK04 model is a standard flashing suitable for pitched roof installations with tile or slate coverings. If your roof uses different materials or your window is a different size, you will need a different flashing kit. Confirm your VELUX window model number and roof type with your supplier if unsure.
- Window size must be exactly 78x98cm
- Roof must be pitched (not flat)
- Roof covering must be tile or slate
- Check your VELUX window model compatibility before purchase
What is included and what you need to prepare
The flashing kit provides all the weatherproofing components needed to seal your window to the roof. Before installation, ensure your roof opening is cut to the correct size and that the roof structure around the opening is sound and level. The roof pitch must be suitable for standard flashing installation. Have your roofing materials ready and ensure you have adequate access and safety equipment for working at height. You will also need appropriate fixings and sealants as specified in the VELUX installation instructions.
- Roof opening must be correctly sized for 78x98cm window
- Roof structure must be sound with no rot or damage
- Roof pitch must be compatible with standard flashing
- Gather roofing materials, fixings, and sealants before starting
Installation and water drainage
Correct installation is critical for weathertightness. The flashing must be carefully aligned with your roof pitch and integrated properly with your existing tile or slate roof to ensure water drains away from the window frame. Poor installation or misalignment will compromise the seal and lead to water ingress. Follow the VELUX installation instructions precisely, paying particular attention to the overlap with roof tiles or slates and the positioning of flashing components relative to the roof slope. If you are not confident in roof work, engage a qualified roofer.
- Alignment with roof pitch is essential for proper drainage
- Flashing must overlap correctly with roof tiles or slates
- All joints and seams must be sealed as per instructions
- Professional installation recommended for complex roof situations