3 Products

Installation Products

The range of VELUX flashings and installation products make the professional installation of your roof windows quick, simple and safe. All original VELUX installation products are compatible to ensure that your roof window is weathertight and safe connected to the roof construction and has an excellent finish on the inside. Optimise your new roof window to ensure an energy-efficient and durable installation. You can choose the frame insulation product BDX, which ensures proper insulation between the roof construction and the window frame, and the pleated underfelt collar BFX, which ensures a flexible and tight connection between the underfelt and the window frame. The drainage gutter ensures that water from the underfelt above can drain away from the window.

We are pleased to be able to offer a 20% discount on all Velux products bought online. Your discount will be automatically applied in your shopping basket.
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BBX Vapour Barrier

Vapour barrier collar, including assembly tool for a vapour and airtight solution.

£22.00
BDX Insulation Collars

Insulation frame with flexible foam for a tight and secure fit to the roof construction.

£30.00
BFX Underfelt Collars

Pleated underfelt collar forms a tight seal between roof window and your felt underlay.

£21.00