How and where to use guide
VELUX Twin and Combination Flashings 55x118cm EKL CK06 S0222
Typical applications and roof types
These flashings are designed for use on pitched roofs, flat roofs and roof terraces. They are specifically engineered to seal around roof penetrations including skylights, roof vents and chimneys. The 55 x 118cm dimensions suit standard roof opening sizes. Confirm the flashing dimensions match your specific penetration before ordering, as incorrect sizing will compromise the watertight seal.
- Pitched roofs with slate, tile or sheet coverings
- Flat roofs and roof terraces with membrane or felt systems
- Skylight and roof window installations
- Vent pipe and chimney penetrations
Installation and fixing
Install the flashing around the roof penetration following current site practice and the manufacturer's detailed installation instructions. The PVC construction allows for both professional and DIY installation. Ensure the flashing is positioned to direct water away from the penetration and underlying roof structure. Use suitable fixings appropriate to your roof covering type and ensure all fixings are sealed to prevent water ingress at fixing points.
- Position flashing to overlap roof covering and direct water downslope
- Secure with appropriate fixings for your roof type
- Seal all fixing points to prevent water penetration
- Follow manufacturer guidance for your specific roof covering material
Maintenance and durability
The robust PVC material provides long-term durability and requires minimal maintenance. Inspect the flashing periodically, particularly after severe weather, to ensure the seal remains intact and fixings are secure. Clear any debris from around the flashing to maintain water drainage. The PVC construction resists degradation from UV exposure and weathering.
- Inspect flashing and fixings annually and after severe weather
- Clear debris and ensure water drainage around the flashing
- Check for any movement or separation from the roof covering
- Reseal any fixings that show signs of deterioration
Important limitations and site considerations
Always confirm the product dimensions of 55 x 118cm are suitable for your specific roof penetration before ordering. The flashing must be installed in accordance with current building regulations and best practice. Improper installation or use on incompatible roof types may compromise performance. Ensure adequate ventilation around penetrations and follow all manufacturer guidance for your particular roof covering system.
- Verify flashing dimensions match your roof penetration size
- Confirm compatibility with your roof covering material
- Install in accordance with current building regulations
- Do not use on roof types outside the specified applications