Most VELUX roof windows now back to normal delivery times! (min. 4 working days)

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Select your Roof Window Size, your Roof Pitch and pick the glazing that better suits you.

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Extra insulation and protection between the roof construction and the window frame

The VELUX BDX insulation frame is an insulation frame for flush recessed installs with flexible foam between the roof construction and the window frame. This provides a tight and secure fit to the roof construction. The VELUX BDX Insulation frame insulates around a single roof window frame, reducing heat loss and eliminating thermal bridges.