How and where to use guide
VELUX EDP MK04 2000 Pro+ Standard Flashings W/ Installation Products 78x98cm
Suitable applications and roof types
This flashing is specifically engineered for single plain tile roofs with tile depths up to 14mm. It is compatible with standard VELUX roof windows and Sun Tunnel systems sized at 78×98cm. The flashing works equally well in new build projects where roof structure is being formed and in refurbishment work where roof windows are being retrofitted into existing pitched roofs. It is designed to perform reliably in typical UK roof conditions and will provide a visually consistent finish that integrates neatly with your existing or new roof covering.
- Single plain tile roofs only, up to 14mm tile depth
- Compatible with VELUX roof windows and Sun Tunnel systems
- Suitable for 78×98cm window openings
- Appropriate for new build and refurbishment projects
- Engineered for UK climate and weather exposure
Installation and component use
The flashing kit arrives complete with BDX and BFX installation products, which are essential for achieving a weather-tight seal. These components work together to secure the flashing to the roof structure and tile surface, creating a continuous barrier against water penetration. Installation should follow VELUX guidance to ensure all components are correctly positioned and secured. The flashing must be fitted before roof tiles are laid or, in refurbishment work, integrated carefully with existing tile courses to maintain weather protection.
- Kit includes all BDX and BFX components needed for installation
- Install flashing before laying roof tiles in new build work
- In refurbishment, integrate flashing carefully with existing tile courses
- Ensure weather-tight seal is formed around all edges
- Follow VELUX installation instructions for correct component positioning
Limitations and maintenance
This flashing is designed specifically for single plain tile roofs and is not suitable for other roof covering types such as slate, concrete tiles, or profiled metal sheets. The 14mm tile depth specification must be observed; tiles thicker than this may not seal correctly. Once installed, the flashing requires no routine maintenance beyond standard roof inspection. However, you should check periodically that the seal remains intact and that no debris has accumulated around the window frame, particularly after severe weather or high winds.
- Single plain tile roofs only; not suitable for slate or concrete tiles
- Maximum tile depth 14mm must not be exceeded
- Not compatible with profiled or metal roof coverings
- Inspect periodically for seal integrity and debris accumulation
- Clear any leaves or debris from around the window frame
On-site tips and best practice
Ensure the roof opening is accurately sized at 78×98cm before ordering or installing this flashing. Check tile depth on site to confirm it does not exceed 14mm. Store the flashing and installation components in a dry location before fitting. During installation, work methodically to ensure all BDX and BFX components are correctly seated and secured. Pay particular attention to the junction between the flashing and the roof tiles to guarantee a continuous weather-tight seal. If you are working in wet conditions, allow adequate time for any sealants or adhesives to cure fully before exposing the roof to rain.
- Verify roof opening is exactly 78×98cm before installation
- Measure tile depth on site to confirm it is 14mm or less
- Store flashing and components in dry conditions before use
- Install all BDX and BFX components according to VELUX guidance
- Allow sealants and adhesives to cure fully before rain exposure
- Work methodically to ensure continuous weather-tight seal at all edges