How and where to use guide
VELUX Twin and Combination Flashings 94x140cm EBP PK08 0021B
Typical applications and installation locations
These flashings are designed for timber-framed construction where weather protection is critical. Install them around window and door openings to create a continuous seal that directs water away from the frame. They are also suitable for roof valleys and eaves where water management is essential. The 94 x 140cm dimensions accommodate standard opening sizes in residential and light commercial timber-frame builds. Ensure the flashing sits properly within the building sequence, typically positioned between the window frame and the external wall finish.
- Window and door openings in timber-framed walls
- Roof valleys where two roof planes meet
- Eaves and soffit areas requiring weather protection
- Standard residential and light commercial applications
Installation and positioning
Position the flashing so water is directed downwards and outwards, away from the timber frame. The flashing should overlap correctly with adjacent materials to create a continuous weather barrier. Ensure the EBP material sits flat against the substrate without creasing or folding, as this compromises the seal. Work methodically around the opening, securing the flashing according to your building design and the requirements of adjacent materials. Allow for thermal movement in timber frames by avoiding over-tight fixing that could restrict natural wood movement.
- Install with downward slope to shed water effectively
- Overlap adjacent flashings and membranes correctly
- Avoid creasing or folding the EBP material
- Allow for timber frame movement during fixing
Material properties and durability
The EBP (Expanded Polypropylene) material is engineered to resist corrosion and UV degradation, delivering long-term performance in harsh outdoor environments. Unlike metal flashings, EBP does not rust or corrode, making it particularly suitable for exposed locations and areas with high moisture. The material remains stable under UV exposure, maintaining its integrity and weather-sealing properties throughout its service life. These flashings integrate with other VELUX flashing products, allowing you to build a comprehensive, compatible flashing system across your installation.
- EBP material resists corrosion in all weather conditions
- UV-resistant finish prevents degradation and brittleness
- Compatible with other VELUX flashing components
- Suitable for exposed and harsh outdoor environments
On-site handling and maintenance
Handle the flashing carefully during transport and installation to avoid damage to the EBP material. Store in a dry location away from direct sunlight before installation. Once installed, the flashing requires minimal maintenance; however, inspect periodically to ensure seals remain intact and water is flowing away correctly. Clear any debris from valleys and eaves to prevent water pooling. Check that the flashing has not shifted or lifted, particularly after severe weather or building settlement. The UV and corrosion resistance of EBP means you will not need to repaint or treat the material.
- Handle carefully to avoid creasing or puncturing
- Store dry and protected from direct sunlight before use
- Inspect periodically to confirm seals are intact
- Clear debris from valleys and eaves to maintain water flow
- No painting or chemical treatment required