Xtralite and Vitral are now a part of VELUX Commercial, and we are delighted to welcome you to our new website. Here, you will find our complete portfolio of daylight solutions and services for industrial, commercial and public buildings.

Linearlight (formerly Vitral SkyVision)

A row of connected flat glass rooflights with option to design wide, uninterrupted daylight sources.

Suitable for:

  • Flat and sloped roofs from 0° up to 15° 
  • Recommended minimal installation pitch of 5°
  • Flat roofing material
  • Opening length (slope direction) from 250 - 2000 mm

Key benefits:

  • Ideal for rows of short and wide rooflights
  • Option to design very wide, uninterrupted daylight sources
  • Ideal for corridors
  • Prefabricated top unit, built-in upstand and connector system for fast installation
  • Fixed and/or comfort venting solution
  • Bespoke sizes - ideal for refurbishment projects
Exterior view of modular rooflights in Strandpromenaden Østerbro, Denmark
See gallery

Related documents and links

Products details

  • In short
    Linearlight is a row of connected VELUX Modular Rooflights that provide a larger area of natural light without the need for additional support. The solution can consist of either fixed modules, venting modules or a combination of both, with no visual difference between fixed and venting modules in closed position. The advanced connector system and drainage gutter ensures a watertight and airtight connection between the modules. A minimised beam ensures a beautiful connection on the inside.

    Linearlight Fixed is available as burglary-resistant versions according to EN 1627:2011 and NEN 5096-2012+A1:2015: Class 2 (RC 2).

    VELUX Modular Rooflight modules are supported by a 10-year guarantee. Actuators and other electrical components that are part of the modular system come with a three-year guarantee.

    VELUX Commercial specialists can offer support throughout design, specification and installation.
    Illustration of VELUX Modular Rooflight Linearlight

    Illustration of VELUX Modular Rooflight Linearlight

    Illustration of VELUX Modular Rooflight Linearlight fixed/venting

    Illustration of VELUX Modular Rooflight Linearlight fixed/venting

  • Details
    VELUX Modular Rooflights are produced off-site at our factory. Linearlight consists of a glass top unit and a built-in wooden upstand and is available as fixed or comfort venting solutions.  The wooden upstand is supplied from 150 mm up to 600 mm depending on project requirements.
    Linaerlight illustration

     Linearlight module construction

    1. Aluminium frame
    2. Insulating Glass Unit (IGU)
    3. Silk screen print
    4. Double gaskets
    5. Clear internal
    6. Lining groove
    7. Insulating mineral wool
    8. Vapour barrier  
    9. Minimized beam.The beam is supporting the top unit while it is kept as slim as possible in order to maximize light entrance.
    10. Drainage gutter. Rain water flows down the drainage gutter and is transported to the outside of the product
    11. Fixed module
    12. Venting module    
  • Functions and sizes
    Modular Rooflights are available in standard sizes and can also be configured, manufactured and delivered in bespoke sizes for specific requirements.

    Venting modules

    In venting modules, the actuator is fully integrated in the wooden upstand. The actuator is not visible from the inside when the module is closed, thus there is no visual difference between fixed and vented modules.
    A venting module is operated by either one actuator or two synchronised chain actuators depending on the clear internal area and module width. The modules must be controlled by either a VELUX INTEGRA®, a Motorlink™ or a third-party ± 24 V DC control system.
    Modular rooflights venting modules

    Comfort venting VELUX Modular Rooflights meet the requirements of the harmonised standard EN 60335-2-103(2015). Therefore, comfort venting skylights can be installed within reach, i.e. at installation heights below 2.5 m above floor level (inside) and ground level (outside).

    VELUX Modular Rooflights have a recommended minimum installation height of 2.5 m above floor level (inside) and ground level (out-side). In case of installation below that level, safety measures must be applied by the installer/user to prevent serious injury. No instruction or measure can eliminate the inherent hazards resulting from installation heights below 2.5 m.


  • Glazing
    VELUX Modular Rooflight Monolight low-energy triple glazing

    Monolight low-energy triple glazing

    VELUX Modular Rooflights can be designed with double or triple glazing units with the following features:

    1. Insulated glazing (Ug values down to 0.5 W/m2K). 
    2. Toughened outer glass.
    3. Laminated inner safety glass. Class P4A for burglary-resistant glazing.
    4. Warm edge spacer (protects insulation properties over time and minimises the risk of condensation at pane edges)
    5. Sun protection coating (optional)
    6. The glazing unit is glued into the aluminium frame with a UV resistant silicone
    7. The glazing unit has a 115mm black silk print along the edge of the rooflight preventing thermal breakage.