Fixing and buying guide
VELUX Twin and Combination Flashings 78x98cm EKL MK04 S0222
Who this product is for
This flashing suits both professional installers and experienced DIY customers undertaking skylight installation or replacement work. It is essential for anyone fitting a VELUX skylight of this size to ensure proper weatherproofing and compliance with building standards.
- Professional roofers and contractors installing VELUX skylights
- DIY builders with experience in roof work and skylight fitting
- Customers replacing existing skylights with new VELUX units
Compatibility and sizing
This flashing is engineered for VELUX skylights with dimensions of 78cm × 98cm. It is compatible with timber roof structures graded F16, F24, F32 or F44, which covers the vast majority of UK residential and light commercial timber framing. Before ordering, confirm your skylight size and check your roof timber grade specification.
- Skylight size: 78cm × 98cm only
- Timber grades: F16, F24, F32, F44
- Verify your existing skylight dimensions and timber specification before purchase
Finish options and installation preparation
The flashing is available in white, grey and brown finishes to match your roof covering and building exterior. Choose the finish that best complements your roof tiles or slates. Before installation, inspect the roof opening, ensure the timber frame is sound and free from rot or damage, and confirm that all necessary roof penetration work has been completed to the correct dimensions.
- White, grey and brown finishes available
- Select finish to match your roof aesthetic
- Check roof opening dimensions match 78cm × 98cm
- Inspect timber frame for damage or deterioration
- Ensure roof structure is prepared and ready for flashing installation
What to check before fixing
Verify that the skylight unit itself is the correct VELUX model for this flashing size. Inspect the roof opening to ensure it is square, level and at the correct dimensions. Check that the surrounding roof structure is sound and that any existing flashing or sealing has been removed. Confirm you have all necessary roofing materials, sealants and fixings to complete the installation.
- Confirm VELUX skylight model matches 78cm × 98cm flashing
- Measure roof opening to verify correct dimensions
- Remove any old flashing or sealant
- Check roof structure is level and square
- Have roofing sealant, fixings and tools ready before starting