Velux EDL MK04 2000 Single Slate Roof Window Flashing Kit 780mm x 980mm
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Velux EDL MK04 2000 Single Slate Roof Window Flashing Kit 780mm x 980mm
(Approx. 3-5 working days)


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The Velux EDL MK04 2000 is an upgraded Pro+ grey aluminium flashing kit supplied with both the BDX insulation collar and the BFX underfelt collar. It is designed to seamlessly integrate a 780mm by 980mm Velux roof window into flat roofing surfaces utilising natural or man-made slate with a maximum thickness of 8mm. The kit creates a completely weather-tight and low-profile seal, ensuring effective rainwater drainage away from the window structure.
The integrated BDX insulation collar wraps tightly around the roof window frame to reduce heat loss, eliminate cold bridges, and optimise the overall thermal performance of the installation. Simultaneously, the pleated, vapour-permeable BFX underfelt collar ensures a secure, flexible seal between the window frame and the roof's existing underfelt line. This system also features an adjustable transverse drainage gutter to collect and channel away any water that penetrates the top roofing materials.
Compatible with roof pitches ranging from 15 to 90 degrees, this kit features a discreet grey powder-coated finish that aligns flush with standard external Velux window frame profiles. It is not suitable for interlocking slate or profiled tiles.
- Designed for standard installation into natural or man-made slate up to 8mm thick.
- Includes a BDX insulation collar to minimize heat loss and cold bridging.
- Supplied with a pleated BFX underfelt collar for a secondary water-resistant seal.
- Features a built-in transverse gutter to channel water clear of the window head.
- Compatible with a wide range of pitched roofs from 15 to 90 degrees.
| Brand | Velux |
|---|---|
| Width | 780 mm |
| Flashing Type | Slate |
| Height | 980 mm |
| Roof Pitch | 15° to 90° |
| Roof Type | Pitched Roof |
| Warranty | 0 |
| Model Name / No | EDL MK04 2000 |
| Insulation Collar (BDX) | Included |
| Maximum Slate Thickness | 8mm (Non-Interlocking) |
| Underfelt Collar (BFX) | Included |
- Delivery cost will be calculated at checkout once delivery address has been confirmed
- Delivery lead times are an estimate only
- Delivery drivers will always prioritise safety over convenience when offloading materials
- Bagged products such as cement and plaster cannot be returned once opened
- Jumbo bags cannot be returned once delivered
- All other goods may be returned within 3 months with a proof of purchase provided
- Chargeable pallets may be returned for a full refund
- All online pricing is specific to Northern Ireland only. Pricing for our Isle of Man branch may vary.
The Velux EDL MK04 2000 is an upgraded Pro+ grey aluminium flashing kit supplied with both the BDX insulation collar and the BFX underfelt collar. It is designed to seamlessly integrate a 780mm by 980mm Velux roof window into flat roofing surfaces utilising natural or man-made slate with a maximum thickness of 8mm. The kit creates a completely weather-tight and low-profile seal, ensuring effective rainwater drainage away from the window structure.
The integrated BDX insulation collar wraps tightly around the roof window frame to reduce heat loss, eliminate cold bridges, and optimise the overall thermal performance of the installation. Simultaneously, the pleated, vapour-permeable BFX underfelt collar ensures a secure, flexible seal between the window frame and the roof's existing underfelt line. This system also features an adjustable transverse drainage gutter to collect and channel away any water that penetrates the top roofing materials.
Compatible with roof pitches ranging from 15 to 90 degrees, this kit features a discreet grey powder-coated finish that aligns flush with standard external Velux window frame profiles. It is not suitable for interlocking slate or profiled tiles.
- Designed for standard installation into natural or man-made slate up to 8mm thick.
- Includes a BDX insulation collar to minimize heat loss and cold bridging.
- Supplied with a pleated BFX underfelt collar for a secondary water-resistant seal.
- Features a built-in transverse gutter to channel water clear of the window head.
- Compatible with a wide range of pitched roofs from 15 to 90 degrees.
| Brand | Velux |
|---|---|
| Width | 780 mm |
| Flashing Type | Slate |
| Height | 980 mm |
| Roof Pitch | 15° to 90° |
| Roof Type | Pitched Roof |
| Warranty | 0 |
| Model Name / No | EDL MK04 2000 |
| Insulation Collar (BDX) | Included |
| Maximum Slate Thickness | 8mm (Non-Interlocking) |
| Underfelt Collar (BFX) | Included |
- Delivery cost will be calculated at checkout once delivery address has been confirmed
- Delivery lead times are an estimate only
- Delivery drivers will always prioritise safety over convenience when offloading materials
- Bagged products such as cement and plaster cannot be returned once opened
- Jumbo bags cannot be returned once delivered
- All other goods may be returned within 3 months with a proof of purchase provided
- Chargeable pallets may be returned for a full refund
- All online pricing is specific to Northern Ireland only. Pricing for our Isle of Man branch may vary.





