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The Walk-on Rooflight

The Walk-on Rooflight

If you’re looking to enrich the room below your roof terrace with some delightful daylight designs, then our walk-on window is for you. The walk-on window adds value above and below, providing a unique feature in your roof terrace or interior space, flooding the room below with lots of beautiful natural light. Choose the perfect shape and size for your light-filled vision, then add to your custom design with functional features such as an anti-slip pane, which ensures that it will not be dangerous to walk on the product when your roof terrace is wet. 

Whether it’s letting the light in from the floor above or creating a stylish daylight design that compliments your roof terrace, this walk-on window does it all.

Key Benefits

  • Durable walk-on glazing for roof terraces and interior flooring
  • Fully bespoke sizes to suit your space and style, from 250 mm to 2000 mm with an impressive max of 2 m2 edge-to-edge view of the skies above
  • Energy efficiency of Uw 2.0 W/(m2K) according to EN 14351-1, and  and with a Ug value of 1.3 
  • All our rooflights come with a laminated inner glazing as standard, for superior safety in the unlikely case of breakage
  • Includes a 150mm or 300mm insulated wooden upstand

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  • How to specify Vario by VELUX rooflights

    • Clear Internal - clear internal equals the daylight you get once the product is installed
    • Structural Opening - the structural opening (hole in the roof) has to be +30mm larger than the clear internal for both the width and length
    • External frame measurement - this measurement is +250mm larger than the clear internal for both the width and length

    Example of a Vario by VELUX rooflight with the clear internal measurement of 2000 x 1000. The structural opening/"the hole in the roof" is 2030 x 1030 and the external frame measurement is 2250 x 1250. 

    Size - Fully customisable flat roof range 

    • Fixed & Opening rooflights can freely be configured between 250mm to 3000mm, with the max clear internal of 4 sqm.
    • Walk-on rooflights can freely be configured between 250mm to 2000mm, with the max clear internal of 2 sqm. Larger edge cannot exceed more than 2000mm. 
    • Each module of the Unlimited rooflight can freely be configured between 250mm to 3000mm, with the max clear internal of 4 sqm.
    • Round rooflights can freely be configured between ø900mm to ø1350mm

    Rooflight types:

    • Fixed, Opening, Walk-on, Walk-on with Anti-slip modular and Round
    • 2-layer & 3-layer glazing - all rooflights come with laminated inner pane
    • All rooflights come with an insulated wooden upstand (excluding Round)
    • Sun coating available
    • Rain Sensor included as standard


    • Internal upstand -  unfinished timber to be finished with plaster board, meeting an aluminium trim, creating a seamless finish. (RAL9010, gloss 30)

    • External upstand surface - Waterproof plywood untreated

    • Frame surface - Aluminium frame (5mm) with a durable powder coating of either Jet Black (RAL9005, gloss 30) or Traffic grey (RAL7043, gloss 30)

    Find real-time prices and start your rooflight configuration -

    Technical values -  find our glazing table with all our rooflight technical values under "Technical descriptions"

Technical specification
  • Unique ref.ufmw_skylight
  • TypeObject (single object)
  • Date of publishing2020-06-12
  • Edition number2
  • Material mainGlass
  • Material secondaryAluminium
  • BIMobject CategoryWindows - Roof Windows
  • IFC classificationWindow
  • UNSPSC nameFixed skylights
  • UNSPSC code30171801
  • Uniclass 2015 CodePr_30_59_98_03
  • Uniclass 2015 DescriptionAluminium frame roof window units
  • CSI MasterFormat 2014 Code08 60 00
  • CSI MasterFormat 2014 TitleRoof Windows and Skylights
  • OmniClass TitleRoof Windows
  • OmniClass Number23-17 13 23
  • CSI UniFormat II CodeB3020
  • CSI UniFormat II TitleRoof Openings

Region availability

United Kingdom
Isle of Man