Key Benefits

  • Each Unlimited One module comes in fully bespoke sizes to suit your space and style, from 250 mm to 3000 mm, with a max of 4m2 edge-to-edge view of the skies above
  • Vario's cleverly engineered gutter and beam connector system allows you to combine an endless amount of modules
  • Freedom to combine fixed and vented modules
  • Superior energy efficiency, achieving an astonishingly low thermal transmittance of Uw of 1.1 W/(m2K), according to EN 14351-1 and with a 0.5 Ug value
  • All our opening rooflights are operated wirelessly and include a rain sensor as default
  • Vario’s 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


  • Vario’s opening feature allows natural, healthy ventilation of your home, the mechanism is completely invisible as the motor is beautifully integrated into the frame
  • Upgrade your opening window with VELUX Active with NETATMO. VELUX Active is our newest Smart Home addition, which ensures a healthy indoor climate and smartphone operation
  • Choose Sun Protection glazing to reduce the heat gain by at least 30% – ideal for rooflights oriented towards the South or West
  • For optimal security for your home choose the burglary resistance feature that has been tested according to EN 1627:2011 & NEN 5096:2012+A1:2015 (for fixed modules only)
  • 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 Unlimited Rooflight is a true masterpiece of daylight design. With the cleverly engineered gutter/beam connector system and no restriction in width, the Unlimited Rooflight lets you build long rooflights as far as the eye can see. The Unlimited Rooflight lets you combine multiple different sizes and shapes together for a design that is truly distinctive and truly your own. You can bring the Long Slim Rooflight, the Rectangular Rooflight or the Square Rooflight together in any combination.

This is the ideal solution for covering a roof opening that exceeds the maximum span our a singular unit, which is limited to 3-4 m2 of glass. The Unlimited Rooflight can be customised to cover almost any desired roof opening.

The Unlimited modules:

  • Can span a maximum length of 2000 mm and width is well, Unlimited
  • Can be combined into huge spans of liberating daylight
  • Can be easier to handle than a 4 m2 singular unit
  • Are combined by an advanced connector system
  • Are separated by a slim (130 mm) beam which can be flexibly positioned to fit both your interior and exterior architecture


Our insulated glazing units offer you the option of double glazing or triple glazing units for your rooflight. Choose double glazing for the maximum daylight drenching effect or triple glazing if superior energy saving eco credentials are your priority. Our advanced Sun Protection offers significant heat reduction, without any green/blue tint in the glazing.

All our Unlimited 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.
  • 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
  • Have a reduced 57.5 mm silk screen between the modules, in order to ensure a consistent exterior aesthetic 

As an example, our triple glazing has a LowE coating with a superior insulating value of Ug 0.5 and a light transmittance of 71%. We use an 8 mm toughened outer pane and a 12.76 mm (66.2) laminated inner pane, separated by two argon gas fillings 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 for our double glazing units and our triple glazing units, to ensure that the pane is positioned as low as possible in the construction, which ensures an ultimate insulating value for the rooflight.



The upstand for our Unlimited One has an advanced connector system with male/female connections. This ensures a slim combi-installation possibility, with a mere 126 mm wide aesthetically pleasing beam spanning the visible area between units.

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.



Our Unlimited Rooflight can be designed to freely combine fixed and opening modules in any configuration, for instance you can put two or more opening modules next to each other. In our opening rooflights, the chain actuator is fully integrated in the wooden upstand. The actuator is not visible from the inside when the roof window is closed, thus there is no visual difference between fixed and opening rooflights.

Everything from integrated motor, wireless remote controls to rain sensor is included when buying our opening roofligts. Our wireless remote controls let you easily control your rooflights at the push of a button. We use the proprietary VELUX communication protocol (iO Home Control®), which ensures complete integration to all electrical products from the VELUX Group.


To provide you with peace of mind when opening your windows, we always include our sleek rain sensor, which automatically closes your rooflight in case of a sudden cloudburst. We offer VELUX ACTIVE which is an automatic, sensor-based operation system that monitors temperature, humidity and CO2 levels and automatically operates your rooflights and other VELUX products directly from your smart phone using the VELUX ACTIVE app. Enjoy easy and fast installation all at a price of £183,33 ex VAT. Read more here.

velux active smart homes vario by velux
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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!
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Installation Guidance
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Unlimited One Product Documentation
Installation Guide
Installation Guide for the fixed Unlimited One