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.
Award-winning product

Monolight (formerly Vitral SkyVision)

Bespoke single unit flat glass rooflights that direct daylight into specific areas of a building.

Suitable for:

  • Flat and sloped roofs from 0° up to 15°
  • Recommended minimal installation pitch of 3°
  • Flat roofing material
  • Opening area up to 4 m²

Key benefits:

  • Maximum daylight through the roof without intrusive framing being visible from beneath
  • Prefabricated top unit and upstand for fast installation
  • Fixed or comfort venting solution
  • Bespoke sizes - ideal for refurbishment projects
Monolight, K.B.Hallen Sports facilities, Copenhagen, Denmark
See gallery
VELUX Modular Rooflights has won Red Dot Award, Product Design in 2023. In 2022, the Monolight rooflight won the Archiproducts Design Award in the Building Shell category. Read more about the awards by clicking the logos.

Related documents and links

Products details

  • In short
    Monolight is a bespoke single unit rooflight which can transform a dull room by flooding the space with natural light from above. Due to the glass top construction the light incidence is maximised, meaning that the light area is equal to the hole in the roof. Monolight consists of a glass top unit and a wooden upstand and is available as a fixed or comfort venting unit.

    Monolight fixed is a non-venting single unit solution that provides daylight through the roof, and is a perfect solution when making natural light a priority. For a nice finish the builders inner lining can be connected into the groove just under the glazing.

    Monolight venting is an optimal solution where light and natural ventilation are required. An elegant and functional product, with a fully integrated chain actuator concealed within the wooden upstand. For a clean finish the builders inner lining can be connected into the groove just under the glazing.

    Monolight Burglary-resistant is available as versions of Monolight fixed and venting. These products are approved according to EN 1627 and NEN 5096 Resistance Class 2. For a nice finish the builders inner lining can be connected into the groove just under the glazing.

    Monolight Walk-on  is a fixed single unit rooflight ideal when natural light is required under an accessible roof. For a nice finish the builders inner lining can be connected into the groove just under the glazing.

    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.
    Modular Rooflights fixed Monolight exterior illustration

    Monolight fixed

    Modular Rooflights venting Monolight exterior illustration

    Monolight venting

    Monolight Walk-on rooflight

    Monolight Walk-on

  • Details
    Modular Rooflights are produced off-site at our factory. Monolight consists of a glass top unit and a wooden upstand and is available as fixed or comfort venting modules. The wooden upstand is supplied from 150 mm up to 600 mm depending on project requirements. Monolight Walk-on is only available as fixed and with an upstand from 175-600 mm.
    Modular Rooflights Monolight module construction

     Monolight module construction

    Monolight module construction

    1. Aluminium frame (height depends on glazing unit) 
      Pre-assembled corners and powder coated aluminium frame with the standard colour grey.
    2. Insulating Glass Unit (IGU)
      Available in double and triple glazing, standard with LowE coating or with additional Sun protection. Monolight Walk-on is only available in a double glazing with a LowE coating.
    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 top plate gasket and the gasket on the aluminium profile provide a watertight and airtight construction.
    5. Upstand 
      90° angle provides a straight connection with the interior. The wood-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 blind
      Hidden pre-wiring is optional for nice and easy installation of VELUX roller blinds.
  • Functions and sizes
    Modular Rooflights are made to measure and can be configured, manufactured and delivered in bespoke sizes for specific requirements. Monolight fixed and venting are available as burglary-resistant versions according to EN 1627:2011 and NEN 5096-2012+A1:2015: Class 2 (RC 2).
    Monolight burglary-resistant

    Monolight burglary-resistant. Stronger fixation of the top unit to upstand and roof.

    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 chain actuators depending on the clear internal area and module width. For further information, see size overview.

    The modules can be controlled by either a VELUX io-homecontrol a Motorlink™ or a third-party ± 24 V DC control system.

    Open venting Modular Rooflight module with chain

    Monolight Walk-on

    Monolight Walk-on is ideal when natural light is required under an accessible roof. It is available with a special 2-layer glazing unit with an optional anti-slip coating.

    The modules are designed to comply with a live load (person) of 5 kN/m2 according to Eurocode EN 1991-11 using and DIN 18008-5.

    Please note that it is the sole responsibility of the customer to verify the product’s suitability for the intended purpose by means of using the relevant  local requirements and load scenarios. Furthermore, national anti-slip regulations should be considered.

    Monolight Walk-on rooflight

    Sizes

    See size options for the modules.
    Go to size overview

    Gray triangle warning icon

    Comfort venting 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).

    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
    Modular Rooflights glazing construction

    Modular Rooflights glazing unit

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

    • Insulated glazing (Ug values down to 0.5 W/m2K). For Walk-on only, double glazing with Ug-values of 1.3 W/m²K is available.
    • Toughened outer glass. For Walk-on, toughened and three-layer laminated glass (EVA foil) with step.
    • Laminated inner safety glass. Class P4A for burglary-resistant glazing.
    • Warm edge spacer (protects insulation properties over time and minimises the risk of condensation at pane edges)
    • Sun protection coating (optional)
    • Optional anti-slip for Walk-on
    • The glazing unit is glued into the aluminium frame with a UV resistant silicone
    • The glazing unit has a 115mm black silk print along the edge of the rooflight preventing thermal breakage.

Get inspired by our case studies