Fixing and buying guide
VELUX Twin and Combination Flashings 55x98cm EBP CK04 0021B
Who this product is for
This flashing is designed for builders, roofers, and experienced DIY installers working on timber frame roof construction. It suits projects involving roof penetrations such as windows, vents, or other roof-mounted elements where a watertight seal is critical. The product is appropriate for both new builds and renovation work on pitched roofs.
- Professional roofers and builders installing VELUX roofing systems
- Renovation projects requiring replacement or additional roof flashings
- Timber frame construction with roof pitches between 30° and 60°
Sizing and compatibility
The 55 x 98cm size is specified for standard roof applications and is compatible with VELUX roofing products. Before ordering, confirm your roof pitch falls within the 30° to 60° range, as this flashing is not suitable for shallower or steeper pitches. The twin and combination design accommodates various roof configurations, but you should verify that this model matches your specific roof penetration requirements and existing VELUX components.
- Size: 55 x 98cm (21.6 x 38.6 inches)
- Roof pitch range: 30° to 60° only
- Compatible with VELUX roofing system products
- Twin and combination design for flexible roof configurations
What is included and pre-installation checks
This product comprises the flashing assembly with PVC and FSC-certified timber components ready for installation. Before fixing, inspect the flashing for any damage during transport and ensure your roof structure is sound and properly prepared. Check that the roof pitch is within the specified 30° to 60° range and that the timber frame is dry and stable. Verify that all other roofing materials and VELUX components are compatible with this model.
- Inspect for transport damage before installation
- Confirm roof pitch is between 30° and 60°
- Ensure timber frame is dry, stable, and properly prepared
- Verify compatibility with existing VELUX roofing products
Installation and durability
The combination flashing design provides a watertight seal around roof penetrations and timber frame junctions when correctly installed. The durable PVC construction resists harsh weather conditions, whilst the FSC-certified timber components are sustainably sourced. Proper installation is essential to achieve the watertight performance this product is designed to deliver. Follow VELUX installation guidance to ensure the flashing integrates correctly with your roofing system.
- Durable PVC construction withstands harsh weather
- FSC-certified timber sourced responsibly
- Twin and combination design creates reliable watertight seals
- Integration with VELUX roofing systems ensures system compatibility