How and where to use guide
VELUX Recessed Flashings 55x118cm EDJ CK06 0000
Typical applications and installation location
Recessed flashings are installed around VELUX roof windows on flat roof structures. The flashing sits recessed into the roof build-up, creating a transition between the window frame and the surrounding roof surface. This product is designed for both domestic loft conversions and commercial flat roof installations where weather protection is critical. The 55 × 118 cm dimensions suit standard VELUX window sizes. Installation requires careful positioning to ensure the flashing sits flush with the roof plane and integrates properly with the window frame and roof membrane or covering.
- Install on flat roof penetrations where VELUX windows are fitted
- Position flashing to sit recessed within the roof build-up
- Ensure integration with roof membrane, insulation, and window frame
- Suitable for both new installations and retrofit applications
- Compatible with domestic loft conversions and commercial flat roof projects
Weather protection and durability
The Grade A timber construction and natural finish provide durable weather protection in demanding roof environments. The recessed design directs water away from the window frame and roof penetration, preventing pooling and ingress. The timber's natural finish is suitable for exposure to the elements on both interior and exterior faces. Proper installation is essential to maintain the weather-tight seal; any gaps or poor integration with the roof membrane will compromise performance.
- Grade A timber resists warping and splitting in exposed conditions
- Natural finish tolerates UV exposure and temperature cycling
- Recessed profile directs water away from the window frame
- Weather-tight seal depends on correct installation and roof membrane integration
- Suitable for harsh weather exposure on domestic and commercial roofs
On-site handling and maintenance
Handle the timber flashing carefully to avoid damage to edges or the natural finish. Store in dry conditions on site before installation to prevent moisture absorption and dimensional changes. Once installed, the flashing requires no routine maintenance beyond general roof inspection. Check periodically that the seal between the flashing and roof membrane remains intact, and clear any debris from the recessed profile to ensure water drainage. If the natural finish shows weathering over time, this is normal and does not affect performance; do not apply sealants or coatings unless specified by VELUX.
- Store in dry conditions before installation to maintain timber stability
- Handle carefully to protect edges and natural finish
- Inspect periodically to ensure roof membrane seal remains intact
- Clear debris from the recessed profile to maintain water drainage
- Do not apply additional sealants or finishes unless recommended by VELUX