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VELUX Fixed Flat Roof Window – Clear

7 sizes available

£611.50£1,299.10 Exc. VAT

velux fixed flat roof window
VELUX Fixed Flat Roof Window – Clear

VELUX Fixed Flat Roof Window – Clear

The new generation of VELUX flat roof windows have been designed with innovation at the forefront, with a wide range of specifications and features that benefit your home.

Each of these flat roof windows is supplied with a curved glass top unit and a fixed base unit with either double or triple glazing.

Manufactured with a slim frame and invisible sash, these roof windows provide maximum daylight and a stunning glass-to-edge view, inside your home.

When installing your fixed flat roof window, you will need to ensure that it is installed on a pitch between 2-15 degrees, to allow rainwater to drain from the glass surface.

Available in a wide range of sizes, this window can be offered with double or triple glazing, which benefits the homeowner with excellent energy performance and sound reduction.

Each of these windows is supplied with a laminated insulated glass unit for safety and is also burglar resistant, complying with class 2 EU legislative requirements, offering real peace of mind.

What’s more is that you will benefit from a 10 years manufacturers guarantee, so you can rest assured that you are covered.


2 Layer Base Unit:

  • Air Permeability: Class 4
  • Thermal Transmittance: 0.65 W/m2K
  • Light Transmittance: 0.69
  • Sound Insulation: 39dB(-1:-5)
  • Total Solar Energy Transmittance: 0.52
  • Ultraviolet Transmittance: 0.05

3 Layer Base Unit:

  • Air Permeability: Class 4
  • Thermal Transmittance: 0.55 W/m2K
  • Light Transmittance: 0.63
  • Sound Insulation: 42dB(-1:-5)
  • Total Solar Energy Transmittance: 0.49
  • Ultraviolet Transmittance: 0.05

Maintenance & Cleaning:

  • Cleaning of the top unit can only be achieved outside on the roof.
  • To clean inner surface of top unit outer glass surface of base unit, remove cover caps and screws to remove top unit and fasten again after cleaning.

Don’t forget to check out our VELUX range, where you can find roof domes, flat roof windows and flat roof exit hatches. where you can find the perfect product for your project.


600 x 600 mm, 600 x 900 mm, 800 x 800 mm, 900 x 900 mm, 1000 x 1000 mm, 900 x 1200 mm, 1200 x 1200 mm

Base Unit

2 Layer Glazing, 3 Layer Glazing


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