How and where to use guide
VELUX EDP PK04 2000 Pro+ Standard Flashings W/ Installation Products 94x98cm
Suitable applications and roof types
This flashing kit is designed exclusively for pitched roof installations and is sized to fit VELUX roof windows measuring 94×98 cm. It is suitable for use with compatible VELUX roof window models within this size range. The kit works with standard roof coverings commonly found on pitched roofs in the UK. Always verify that your roof window model is compatible with the PK04 2000 Pro+ specification before ordering, as flashing kits are size and model specific. Do not attempt to use this kit on flat roofs or with roof windows of different dimensions.
- Pitched roof applications only
- Compatible with 94×98 cm VELUX roof windows
- Verify window model compatibility before installation
- Not suitable for flat roof installations
Installation and on-site preparation
Before beginning installation, ensure the roof opening is correctly sized and prepared to receive a 94×98 cm window. The flashing kit should be installed as part of the roof window fitting process, with all components laid out and checked against the kit contents before work commences. Installation must follow the sequence specified in the VELUX installation documentation to ensure proper weatherproofing. The flashing components must be positioned to overlap roof covering materials correctly, creating a continuous water-shedding surface. All installation products included in the kit should be used as directed; do not substitute components or omit steps. Work should be carried out in dry conditions where possible, and the roof area must be secure and safe for operatives.
- Check roof opening dimensions match 94×98 cm specification
- Verify all kit components are present before starting work
- Follow VELUX installation sequence precisely
- Ensure proper overlap of flashing with roof covering
- Use only products included in the kit as specified
- Install in dry conditions for best results
Weatherproofing and thermal performance
The primary function of this flashing kit is to create a complete weatherproof seal between the roof window frame and the surrounding roof structure. When installed correctly, the flashing prevents water penetration at the critical junction where the window meets the roof covering. This weatherproofing is essential not only for protecting the building interior but also for maintaining the thermal performance of the roof window itself. Any gaps or poorly sealed areas can allow water ingress and thermal bridging, compromising both the durability of the installation and its energy efficiency. The kit is engineered to work with the window's thermal properties when fitted according to manufacturer guidance.
- Creates weatherproof seal at window-to-roof junction
- Prevents water ingress and associated damage
- Supports thermal performance when correctly installed
- Protects building interior from moisture penetration
Maintenance and inspection
After installation, periodically inspect the flashing to ensure it remains in good condition and that no gaps or damage have developed. Check that all components remain properly seated and that no debris has accumulated around the flashing edges. In areas with heavy rainfall or exposure, more frequent inspection may be advisable. If any damage to the flashing is identified, it should be repaired promptly to maintain weatherproofing integrity. Do not attempt to modify or remove flashing components once installed, as this will compromise the weatherproof seal. If the roof window requires maintenance or repair, ensure the flashing is not disturbed during the work.
- Inspect flashing periodically for damage or gaps
- Clear debris from flashing edges and junctions
- Repair any damage promptly to maintain weatherproofing
- Do not modify or remove components after installation
- Protect flashing during any subsequent roof work