Fixing and buying guide
VELUX Twin and Combination Flashings 94x160cm EKL PK10 0021E
Who these flashings are for
These flashings are designed for builders, roofers, and serious DIY installers undertaking skylight installations. They are suitable for projects where VELUX skylights are being fitted into pitched roofs with timber construction. If you are installing a new skylight, replacing an existing one, or creating a roof opening that requires weather protection, these flashings provide the necessary sealing solution.
- Professional roofers and builders installing VELUX skylight systems
- DIY customers with experience in roof work and skylight installation
- Projects requiring weather-tight sealing around roof openings
Compatibility and sizing checks
Before purchasing, confirm that your roof structure and skylight system are compatible with these flashings. The 94cm width by 160cm length profile is designed for specific VELUX skylight dimensions, so verify your skylight model matches this specification. These flashings are suitable only for roofs with a pitch of up to 30 degrees; if your roof is steeper, you will need a different flashing type. The flashings are designed for use with FSC-graded timber of either 32mm or 40mm thickness, which is the standard rafter or joist depth in most UK roof constructions.
- Confirm your VELUX skylight model is compatible with 94cm × 160cm flashings
- Check your roof pitch does not exceed 30 degrees
- Verify your timber frame is FSC-graded and either 32mm or 40mm thick
- Measure your roof opening to ensure it matches the flashing dimensions
What is included and preparation
This product is supplied as a single twin and combination flashing unit with the durable EKL coating already applied. Before installation, inspect the flashing for any damage during transport and ensure all edges and seams are intact. Lay out the flashing on a clean, flat surface to familiarise yourself with its profile and ensure you understand how it will sit around your skylight opening. Check that your roof opening has been cut to the correct dimensions and that the surrounding timber is sound and level. Have all necessary sealants, fixings, and compatible VELUX components ready before you begin installation.
- Inspect the flashing for transport damage before starting work
- Prepare your roof opening to the correct dimensions
- Ensure surrounding timber is level, sound, and free from rot
- Gather all sealants and fixings required for your VELUX system
Installation and weather protection
These flashings must be installed in accordance with VELUX installation instructions to achieve a weather-tight seal. The EKL coating provides excellent protection against corrosion, but correct installation is essential for the flashing to perform its function of preventing water ingress. Ensure the flashing is properly seated around the skylight opening and that all joints and seams are sealed with appropriate weatherproof sealant. Once installed, the flashing will integrate with your VELUX skylight system to create a secure, weather-tight installation that meets building standards for roof protection.
- Follow VELUX installation instructions precisely for weather-tight sealing
- Ensure the flashing sits level and secure around the skylight opening
- Seal all joints and seams with compatible weatherproof sealant
- Check that water will drain away from the opening once installation is complete