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 150 mm insulated wooden upstand


  • Anti-slip dots may be applied to ensure a safe, non-slip surface to walk on even in damp conditions. The anti-slip coating is classified as R11 with anti-slip properties, according to DIN 51130
  • Blinds are available for most sizes and you will be able to choose between 3 standard colours and they are pre-fitted during production
10 Years Guarantee
Applies to all Vario by VELUX rooflights, including glazing units.
Daylight Experts
We're here to help whenever you need us, before, during and after you install your bespoke rooflights.
Safety & Security
Our rooflights have laminated inner panes to ensure your safety and come with a burglary resistance option.
Smart Home
A sensor-based-operation of your rooflights & full indoor climate control using your smartphone.


The Walk-on Rooflight is our toughest, strongest and most resilient rooflight in what is already a very sturdy and durable range. The walk on window's unbelievable load bearing capabilities mean it can be an integrated part of the flooring on your roof terrace or upper floors, allowing you a stylish design feature that serves two living spaces at once. The Walk-on Rooflight can be installed either outside,or inside between stories, bringing light into darker spaces of your home.

The Walk-on Rooflight:

  • Comes in various styles and sizes such as Long Slim Rooflights, Rectangular Rooflights or Square Rooflights
  • Can have a maximum measurement of 2 m2 of internal clear glass per unit
  • Can be installed with an anti-slip coating, ensuring you'll stay safe and sure footed even in damp conditions


The insulated glazing units for our walk-on window has been specially constructed to be ultra strong and durable. An anti-slip coating can be applied, to ensure safe, non-slip surface. The anti-slip coating is classified as R11 with anti-slip properties, according DIN 51130. Please see the glazing table for further information.

All our walk-on glazing units:

  • Come with a laminated inner pane, which we consider a prerequisite for safety measures. The lamination also eliminates the risk of UV rays fading your interior furnishing.
  • Come with an outer pane construction consisting of three toughened laminated panes 
  • Use three different glazing constructions to ensure the best quality and durability for our larger glazing units
  • Have warm edge spacers to ensure a thermal breakage and energy efficiency
  • Come with a 115 mm black silk screen to protect the underlying gasket system and for aesthetic purposes

As an example, our walk-on glazing has a LowE coating with an insulating value of Ug 1.3 and a light transmittance of 73%. We use 3 x 8 mm laminated toughened outer panes and a 10.76 mm (55.2) laminated inner pane separated by 16 mm argon gas filling for thermal performance. See all the specific values of our glazing constructions in our glazing table.

frame construction
Frame construction

Frame Construction

All our lightweight aluminium rooflight frames are:

  • Designed to work perfectly with our laminated insulating glazing units
  • Crafted from highly durable and strong 5 mm aluminium, selected for its high corrosion resistance, joint strength and malleability
  • Treated with a polyester powder coating to ensure a tough, weather and corrosion resistant, durable finish
  • Powder coated with our standard RAL 9005 Jet Black
  • Can be customised through a variety of special colours

We have constructed specific aluminium frames to create a perfect match for our walk-on glazing units.



The Walk-on Rooflight comes with a specially designed wooden upstand to carry the unique and heavy glazing construction. The upstand uses rock wool insulation to keep your home snug. The natural wood allows for an easy and safe installation and is a perfect match to the remaining rooflight construction.

Our upstands come with:

  • A sleek L-shaped white aluminum profile (RAL 9010) around the edges, the groove ensures an easy installation of the lining providing a beautiful glass to edge inner finish.
  • The possibility of pre-installed light dimming or blackout blinds 
  • A superior pre-fitted gasket system, ensuring a 100% tight and secure connection between the frame and upstand construction
  • An external surface of untreated waterproof plywood, which is great for applying roofing felt or other flat roofing materials

Our upstands come in 150 mm and 300 mm, depending on project requirements and architectural specifications. 

For customised upstand heights, please contact us.



As all Vario by VELUX rooflights are bespoke products and individually made to order, the Declaration of Performance [DoP] will be unique for each roof window. Some of the essential characteristics will be based on product type, size and variant you choose for your long window. The specific DoP will be generated through our online DoP configurator, for each individual product. 

If you would like to request a specific DoP, please contact us.

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Call us +44 (0) 1592 778 246 or email us
We're here to support you with your rooflight design and purchase in any way we can. All you have to do is ask our daylight experts!
We can help you design your dream home, using natural light from bespoke rooflights.
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If you're not sure which Vario by VELUX rooflight you need, we can guide you to your perfect match.
Installation Guidance
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Walk-on One Product Documentation
Installation Guide
Installation Guide for the Walk-on Rooflight
Cross Section
Upstand 150 mm (PDF)
Cross Section
Upstand 150 mm - Large (PDF)
Cross Section
Upstand 300 mm (PDF)
Cross Section
Upstand 300 mm - Large (PDF)
Cross Section
Upstand 150 and 300 mm (DWG)