Fixing and buying guide
VELUX Twin and Combination Flashings 134x98cm EKL UK04 S0222
Who this product is for
These flashings are intended for builders, roofers, and experienced DIY customers installing or replacing roof penetration seals. You should be comfortable working at height and have basic roofing knowledge. Professional installation is recommended for complex roof configurations.
- Builders and roofing contractors
- Experienced DIY customers with roof access and safety equipment
- Projects requiring weather-tight seals around roof penetrations
Compatibility and sizing
These flashings are designed for pitched roofs with a minimum angle of 30 degrees. They are compatible with structural timber grades F16, F24, and F36. The flashing dimensions are 134 × 98cm, and the product accommodates roof lengths up to 4m. Check your roof pitch angle and timber grade before purchase to ensure compatibility with your installation.
- Minimum roof pitch: 30 degrees
- Compatible timber grades: F16, F24, F36
- Flashing size: 134 × 98cm
- Maximum roof length accommodation: 4m
- Suitable for felt, slate, and metal roofing materials
Pre-installation checks
Before fitting, verify that your roof pitch meets the 30 degree minimum requirement. Confirm your structural timber grade matches one of the compatible grades. Inspect the roof area where the flashing will be installed to ensure it is clean, dry, and free from debris. Check that existing roofing material is in good condition and properly secured.
- Measure roof pitch angle to confirm it meets 30 degree minimum
- Identify and verify timber grade of roof structure
- Clean and prepare the installation area
- Ensure roofing material is sound and secure
Fixing and installation
These flashings deliver a weather-tight seal when properly installed around roof penetrations. The robust construction is engineered to withstand harsh weather conditions. Follow VELUX installation guidance specific to your roofing material type, whether felt, slate, or metal. Ensure all fixings are secure and sealed to prevent water ingress. Consider professional installation if you are unfamiliar with roof work or working at height.
- Install according to VELUX guidance for your roofing material
- Secure all fixings firmly to prevent movement
- Seal all joints and edges to ensure weather-tight performance
- Use appropriate safety equipment when working at height