How and where to use guide
VELUX Recessed Flashings 78x118cm EDN MK06 0000
Suitable applications and roof types
This recessed flashing is engineered for use with VELUX rooflights in two primary construction types: timber-framed roofs and concrete slab roofs. It is rated for roof pitches up to 30°, making it suitable for most domestic pitched roof installations. The 78×118cm size matches standard VELUX rooflight dimensions, so confirm your rooflight model and size before ordering. Use this flashing in new build projects where rooflights are installed during construction, or in retrofit applications where rooflights are being added to existing roofs. It is appropriate for residential lofts, extensions, and commercial buildings requiring roof glazing.
- Timber-framed roof constructions
- Concrete slab roof constructions
- Roof pitches up to 30°
- New build and retrofit installations
- Residential and commercial applications
Installation and positioning
The recessed flashing must be positioned around the rooflight opening before the rooflight frame is installed. The flashing sits between the roof structure and the rooflight, creating a watertight seal that directs water away from the opening. Ensure the roof opening dimensions match the 78×118cm flashing size and that the roof pitch does not exceed 30°. The flashing should be secured according to VELUX installation instructions, which typically involve fixing to the roof structure with appropriate fasteners for your construction type. On timber roofs, use corrosion-resistant screws or nails; on concrete, use appropriate anchors. Check that the flashing sits flush and level before installing the rooflight frame.
- Position flashing around rooflight opening before installing rooflight frame
- Confirm roof pitch does not exceed 30°
- Secure flashing to roof structure with appropriate fasteners for timber or concrete
- Ensure flashing sits flush and level
- Follow VELUX installation instructions for your specific rooflight model
Maintenance and durability
The durable weather-resistant finish is designed to withstand prolonged exposure to rain, wind, and temperature changes without degradation. After installation, inspect the flashing periodically, particularly after severe weather, to ensure the seal remains intact and no water is penetrating around the rooflight. Clear any debris such as leaves or moss from the flashing surface and surrounding roof area to prevent water pooling. Do not apply abrasive cleaners or high-pressure jets directly onto the flashing, as this may damage the weather-resistant finish. If the seal shows signs of deterioration or water ingress is suspected, contact a qualified roofer or VELUX installer for inspection and repair.
- Inspect flashing periodically, especially after severe weather
- Clear debris from flashing and surrounding roof area
- Avoid abrasive cleaners and high-pressure washing
- Monitor for signs of water ingress around the rooflight
- Seek professional advice if seal integrity is compromised
Limitations and on-site considerations
This flashing is rated for roof pitches up to 30° only; do not use on steeper pitches as water management may be compromised. The 78×118cm size is fixed, so it is suitable only for VELUX rooflights of matching dimensions. Confirm compatibility with your rooflight model before purchase. Installation requires careful positioning and secure fixing to prevent water ingress; if you are inexperienced in roofwork, consider engaging a qualified installer. The flashing must be installed as part of a complete rooflight installation system; it is not a standalone product and must be used with a compatible VELUX rooflight frame. Store the flashing flat and protected from damage on site until installation.
- Not suitable for roof pitches exceeding 30°
- Fixed size 78×118cm; confirm rooflight compatibility before ordering
- Must be installed as part of complete VELUX rooflight system
- Requires secure fixing to prevent water ingress
- Store flat and protected from damage until installation