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 bespoke flat glass rooflights with option to design wide, uninterrupted daylight sources.

Suitable for:

  • Flat and sloped roofs from 0° up to 15° , with 0° in lateral direction
  • 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
Modular Rooflights - Linealight
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Products details

  • In short
    Linearlight fixed and/or venting is a unique solution that by placing modules side by side form a continuous system without the need for additional support. The solution consists of pure fixed modules, pure venting modules or a combination of both, based on customer wishes.

    The upstand with advanced connector system and drainage gutter ensures a watertight and airtight connection between the modules. A minimized 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.

    Based on customer requirements a static calculation on snow and windload will be made by VELUX Commercial for each building situation.
    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
    Linearlight fixed and/or venting is a unique solution that by placing modules side by side form a continuous system without the need for additional support. The solution consists of pure fixed modules, pure venting modules or a combination of both, based on customer wishes. The upstand with advanced connector system and drainage gutter ensures a watertight and airtight connection between the modules. A minimized beam ensures a beautiful connection on the inside. Based on customer requirements a static calculation (snow and windloads) will be made by VELUX Commercial for each building situation.
    Linearlight module construction

     Linearlight module construction

    Linearlight module construction

    1. Aluminium frame 
    (height vary depending on glazing unit) Pre-assembled corners and powder coated aluminium frame with the standard colour RAL 7043, gloss 30.

    2. Insulating Glass Unit (IGU)
    Available in double and triple glazing, standard with LowE coating or with additional Sun protection.

    3. Silk screen print
    The silk screen print gives a nice finish as well as UV protection to the gaskets and the underlying construction.

    4. Double gaskets
    The gaskets on the aluminium profiles provide watertight and airtight construction.

    5. Upstand
    90° angle provides a straight connection with the interior. The timber-EPS sandwich construction provides a stable and well-insulated upstand for a good insulating performance of the entire product.

    6. Lining profile
    This multifunctional part defines the clear internal part of the product. It offers the possibility for a secure connection to the vapour barrier in the roof construction. It also makes the flush plaster board connection from ceiling to glazing easy and intuitive during installation. Vapour barrier and inner lining are to be supplied by others. The profile also supports installation of an optional roller blind.

    7. Pre-wiring for roller blinds
    Hidden pre-wiring is optional for nice and easy installation of VELUX roller blinds.

    8. Minimized beam
    The beam with optimized reinforcement is supporting the top unit while it is kept as slim as possible in order to maximize light entrance. 

    9. Drainage gutter
    Rain water flows down the drainage gutter and is transported to the outside of the product.

    10. Fixed module

    11. Venting module

    Linearlight burglary-resistant illustration

    Linearlight burglary-resistant illustration

    Linearlight burglary-resistant construction

    1. Aluminium frame (height vary depending on glazing unit)
    Welded corners and powder coated aluminium frame with the standard colour RAL 7043, gloss 30

    2. Insulating Glass Unit (IGU)
    Available in double and triple glazing, standard with LowE coating or with additional Sun protection.

    3. Silk screen print
    The silk screen print gives a nice finish as well as UV protection to the gaskets and the underlying construction

    4. Double gaskets
    The gaskets on the timber upstand provide watertight and airtight construction

    5. Internal lining 90°
    lining defining the clear internal part of the product and provides a great connection with the interior

    6. Lining groove
    Makes the plaster board connection easy and intuitive during installation

    7. Insulating mineral wool
    Insulation material in the frame ensures a good insulating performance of the entire product

    8. Vapour barrier
    The pre-fitted vapour barrier ensures an easy and secure connection to the vapour barrier in the roof construction

    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

  • Functions and sizes
    Modular Rooflights are made to measure and can be configured, manufactured and delivered in bespoke sizes for specific requirements. Linearlight fixed is available as burglary-resistant versions according to EN 1627:2011 and NEN 5096-2012+A1:2015: Class 2 (RC 2).

    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.

    The stroke length is 260 mm resulting in an opening of approximately 190 mm. The venting modules meet the requirements of the harmonised standard EN 60335-2-103(2015), see comment below for reference. A venting module is operated by either one actuator or two synchronised actuators depending on the clear internal area and modules width. For further information, see size overview.

    The modules can 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 Linearlight low-energy triple glazing

    Linearlight 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 (50 mm at beam side) of the rooflight preventing thermal breakage.