Key Selling Points

  • Fully bespoke sizes to suit your space and style, from 250 mm to 3000 mm with an impressive maximum 4 m2 edge-to-edge view of the skies above
  • 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 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


  • Our opening feature allows natural, healthy ventilation of your home, the mechanism is completely invisible as the motor is beautifully integrated into the upstand
  • The walk-on feature is available to you on all fixed square edged rooflights up to 2 m2
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.
Laminated Safety Glass
By default, Vario by VELUX rooflights have laminated inner panes to ensure your safety.
Play With Colour
Experiment with different frame colours or order your own unique custom RAL colour.


The Rectangular Rooflight is ideal for kitchens as it aligns perfectly with the shape of most creative culinary spaces, allowing you to flood your worktops with natural light. The rectangular window is the type of Vario by VELUX rooflight which provides the largest clear internal measurement, with the potential of achieving an astonishing 1330 mm in length and 3000 mm in width. It can achieve fully customised spans of up to 4 m2 with a maximum ratio between the shortest and longest side of 1:6.

When designing your Rectangular Rooflight, you have the flexibility of a huge array of helpful features, such as:

  • Different insulating glazing units
  • Motorised ventilation
  • Walk-on capability for roof terraces
  • Other great custom features

If you want to create a rectangular rooflight larger than maximum span of the Rectangular Rooflight, we recommend our Unlimited Rooflight, which can be a combination of any of our square edges shapes, long, rectangle or square in any combination to create a span of sky that is a perfect fit for your space.

For example you might choose to combine three Rectangular Rooflights, so three times 1000 mm x 1916 mm in an aesthetically pleasing combi-installation, providing 6000 mm roof opening, with two minimalistic beams of 126 mm connecting the modules.



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.

All our glazing units:

  • Come with a laminated inner pane, which we consider a prerequisite for safety measures 
  • 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 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
  • Hand-welded on the inside of the corner sections to ensure a smooth surface and a completely seamless connection
  • 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 Rectangular Rooflight comes with a wooden upstand that 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 superior pre-fitted gasket system, ensuring a 100% tight and secure connection between the frame and upstand construction
  • A pre-installed vapour barrier, which ensures a safe and easy connection to the roof itself
  • An internal surface treated with a membrane of water based white coating (RAL 9010) on the waterproof plywood
  • 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.



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.

A module with motorised ventilation is operated by either one or two actuators, depending on the clear internal area and the width of the window:

  • A double glazing rooflight needs two actuators if the product is larger than 2 m2 or has a width wider than 2000 mm
  • A triple glazing rooflights needs two actuators for a product which is larger that 1.5 m2 or has a width wider than 2000 mm

The Tech Stuff:

  • The actuator uses 3 amp and must be controlled by a separate OS ± 24V system
  • In the OS ± 24 V, the actuators are controlled by ± 24 V DC 
  • For the OS ± 24V, the actuators, control units and switches are supplied by Vario by VELUX
  • For two actuators, there will be a need for a larger control unit, which will be supplied by Vario by VELUX
  • The actuator can be integrated in common building automation fieldbus systems, e.g. KNX, BACnet, LON and Modbus, through the integrated MotorLink™ technology. Connection to a fieldbus system requires a separate control box between fieldbus system and actuator
Get your own
bespoke rooflight
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.
Daylight Design
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Inspiration insights
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Product Counselling
If you're not sure which Vario by VELUX rooflight you need, we can guide you to your perfect match.
Installation Guidance
Get support and guidance to help your rooflight installation be smooth and stress free.
Rectangular One Product Documentation
Installation Guide
Installation Guide for the fixed Rectangular One
Cross Section - Fixed Rooflight
Upstand 150 mm (PDF)
Cross Section - Fixed Rooflight
Upstand 300 mm (PDF)
Cross Section - Fixed Rooflight
Upstand 150 and 300 mm (DWG)
Cross Section - Opening Rooflight
Upstand 150 mm (PDF)
Cross Section - Opening Rooflight
Upstand 300 mm (PDF)
Cross Section - Opening Rooflight
Upstand 150 and 300 mm (DWG)