How and where to use guide
VELUX Twin and Combination Flashings 134x98cm EKL UK04 S0122
Typical applications and installation
These flashings are installed on flat roofs where UK04 S0122 tiles are specified. They are used to seal around roof penetrations such as pipes, vents, and skylights, and to bridge junctions between tiles and adjacent building elements. The flashings must be installed in conjunction with the compatible UK04 S0122 roof tiles to achieve the designed watertight performance. Installation should follow the tile manufacturer's guidance to ensure proper seating and seal integrity. The 134x98cm size is matched to the tile profile, so positioning and alignment are critical for consistent coverage across the roof.
- Install only with UK04 S0122 roof tiles – do not use with other tile profiles
- Position flashings to bridge tile junctions and roof penetrations
- Ensure full contact between flashing and tile profile for watertight seal
- Follow tile manufacturer's installation instructions for fixing and overlap requirements
- Check alignment before final securing to avoid gaps or misalignment
Weather resistance and durability
The UV-stabilised plastic construction is formulated to resist degradation from prolonged sunlight and weather exposure typical of UK roof conditions. This treatment prevents brittleness, discolouration, and material failure over the product's service life. The watertight seal design prevents water ingress at critical junctions, protecting the roof structure and interior from damp and water damage. Proper installation is essential to maintain this protection.
- UV-stabilised material resists sun damage and weathering
- Maintains flexibility and integrity in UK temperature and humidity conditions
- Watertight design prevents water pooling and penetration at tile junctions
- Do not expose to extreme heat sources or direct flame during installation
On-site handling and maintenance
Store flashings flat and protected from direct sunlight before installation to prevent any surface damage. During installation, handle carefully to avoid creasing or deforming the profile, as this will compromise the seal. Once installed, inspect flashings periodically to ensure they remain properly seated and that no gaps have developed. Clear any debris, moss, or algae growth from flashing surfaces to maintain water drainage and prevent pooling. Do not apply high-pressure washing directly onto flashing seals, as this may force water underneath.
- Store in dry conditions away from direct sunlight until installation
- Handle carefully to avoid creasing or profile distortion
- Inspect annually for proper seating and seal integrity
- Clear debris and organic growth to maintain water drainage
- Avoid high-pressure washing that may compromise seals
Limitations and compatibility
These flashings are engineered exclusively for UK04 S0122 roof tiles and must not be used with other tile profiles or roof systems. The 134x98cm dimensions are fixed and sized to match the specified tile profile; they cannot be cut or modified without compromising performance. Installation on pitched roofs or with incompatible tile systems will result in poor fit and water ingress. Ensure all materials on site are the correct specification before commencing work.
- Compatible only with UK04 S0122 roof tiles – verify specification before purchase
- Do not cut, trim, or modify flashing dimensions
- Not suitable for pitched roofs or non-flat roof applications
- Confirm tile batch and profile match before installation begins