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Velux Fixed Flat Glass Roof Window

Advanced technology protects from the elements

Award winning quality and finish

£568.32 ex. VAT£681.98 inc. VAT

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Lead Time: 3-5 working days


Velux Fixed Flat Glass Roof Window

The Velux Fixed Flat Glass Roof Window is ideal where there is a need for bringing in large amounts of daylight without adding extra ventilation. 

While the classic Velux Flat Roof Window comes with a polycarbonate dome, the flat roof plane glass model introduces a beautifully integrated 4mm hardened glass pane. Inside, the newcomer matches all specifications of a classic Velux Flat Roof Window. Outside, the plane glass stands out as a stylish and minimalistic design feature with underlying black bordering and discrete profiling.

The Velux flat glass rooflight is made of quality materials, comprising a rigid heartwood framework and lacquered aluminium cladding for extra durability and low maintenance requirements.

Velux high-performance insulation is integrated into the frame to give the best possible protection against heat loss. This, combined with our optimised protection against thermal bridges, delivers a warmer, more comfortable home.


  • Flat glass product for Velux Flat Roof Windows CFP and CVP.
  • Ideal for new Velux Flat Roof Windows or as replacement for existing domes.
  • Sleek, elegant design in glass and aluminium.
  • 4mm toughened glass pane with silk screen printed rim.
  • Easy-to-clean coating on glass minimises cleaning frequency and gives a clearer view in case of rain.
  • Maintenance-free aluminium profiles.
  • Velux flat glass product comes with gasket and all necessary screws and brackets.
  • Can be installed into roof pitches between 2° and 15°.

The pane should be cleaned with a soft, clean, lint-free cloth or non-abrasive sponge. The rest of the window can be cleaned with ordinary household cleaners.

Flat Roof Window Sizes 

Product Code External Frame Size including kerb Structural Openings
060060 78 x 78 cm 60 x 60 cm
090060 108 x 78 cm 90 x 60 cm
080080 98 x 98 cm 80 x 80 cm
090090 108 x 108 cm 90 x 90 cm
100100 118 x 118 cm 100 x 100 cm
120090 138 x 108 cm 120 x 90 cm
120120 138 x 138 cm 120 x 120 cm
150100 168 x 118 cm 150 x 100 cm
150150 168 x 168 cm 150 x 150 cm
200100 218 x 118 cm 200 x 100 cm

If you would like to add ventilation to your room, then click here for the Velux Electric Flat Glass Roof Window.

  • For Roof Windows, Velux offer a 10 year guarantee as standard.

    For more information click here.

  • For Velux technical data, click here.

    For the Velux installation guide, click here.

  • If you are not satisfied with any LB Supplies products you can return them within 14 days of purchase as long as they are unused and in their original condition and packaging. If you purchased from our website and would like to return your products, please download the LB Supplies returns form below and include it with the return. Once we′ve received your unused products, we′ll refund you the amount of the original purchase, excluding any delivery costs, using your initial method of payment. Some products may incur restocking charges. For all returns and any exchanges, you are required to cover the cost of the return delivery to our offices.  For your own security, we recommend using a recorded delivery service when sending goods to us.

    Click here for a product returns form.