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

Step Longlight/Ridgelight

Multiple rows of skylight modules connected to create a large glass roof.

Suitable for:

  • Flat roof
  • Flat roofing material
  • Roof opening extra large
  • Rooflight installation pitch 5-25° 

Key benefits:

  • Prefabricated solution for large, glazed roofs
  • Elegant design with option of slim beams between the rows/steps
  • Maximum daylight through the roof
Step Longlight skylights solution
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The VELUX Step Solution has won Red Dot Award, Product Design in 2020. In 2019, it received the Archiproducts Design Award. Read more about the awards by clicking the logos.

Tools and guides

Products details

  • In short

    The Step solutions enables great daylight designs in buildings with large, open atriums.

    Step Longlight 5-25° consist of multiple rows of Modular Skylights installed close to each other using joint brackets.

    Step Wall-mounted Longlight 5-25° consist of multiple row of Modular Skylights installed against a vertical wall in the top.

    Step Ridgelight 25° consist of a self-supporting Ridgelight with one or more rows of modules below, on one or both sides or the ridge.

    Step Ridgelight on Girder 5-25° consist of Ridgelight installed in a supporting horizontal girder with one or more rows of modules below, on one or both sides of the ridge. The supporting girder enables a installation pitch between 5° and 25°.

    The rows are connected by a factory finished flashing that ensures drainage of water between the rows. The rows must be supported by structural beams on the inside of the building.

    Modular Skylights are delivered with a 10-year guarantee on modules and flashings.

    VELUX skylight specialists offer support throughout design, specification and installation, including design of structural beams. Please note that structural beams and sub-constructions are not included in the VELUX delivery.

    Learn more about sub-constructions

    View an interactive 3D cross section of the Modular Skylight solution.

    Illustration of Step Longlight/Ridgelight - a VELUX Modular Skylight solution

    Step Longlight 5-25°


    Step Wall-mounted Longlight 5-25°

    Step Wall-mounted Longlight 5-25°


    Illustration of Step Ridgelight

    Step Ridgelight 25°


    Illustration of Step Ridge on Girder

    Step Ridgelight 5-25° on Girder


  • Functions and sizes

    Modular Skylights are available in a wide range of standard sizes and functionalities:

    Fixed skylight module

    1. Fixed skylight module 

    Motorized comfort venting skylight module

    2. Motorized comfort venting skylight module.
    Actuator chain stroke 260 mm.

    Motorized smoke venting skylight module opens up to 700mm in less than 60 seconds

    3. Motorized smoke venting skylight module.
    Actuator chain stroke up to 700 mm, which opens in less than 60 seconds.

    Modular Skylights require the following minimum and maximum measurements:

    1. Module width: 675-1000 mm
    2. Module height: 600-3000 mm 



    See size possibilities for fixed, comfort and smoke venting modules.
    Go to Size grid

    Warning triangle

    VELUX comfort venting Modular Skylights 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). We recommend that you observe national regulations and consider if the planned specific use of the building requires additional safety measures that must be applied by the installer/user to prevent serious injury. For more details and information on smoke venting Modular Skylights, please refer to the Technical Handbook and the safety guidelines delivered with each product. If VELUX roller blinds are installed, please observe recommendations.

  • Details

    Modular Skylight system is a turnkey solution comprising prefabricated skylight modules with dedicated claddings, flashings and vapour barrier connection strip to allow for design of watertight rooflight and glass roof structures.

    Comfort ventilation is possible via an integrated chain actuator that can be controlled with VELUX INTEGRA® system or with your preferred building management system. Smoke ventilation can only be controlled with your preferred building management system.

    For optimal daylight and heat control consider internal roller blinds that can be pre-mounted from the factory.

    View an interactive 3D sample of the Modular Skylight system.

    Pre-fabricated VELUX Modular Skylights

    Prefabricated Modular Skylights from VELUX come with perfectly matching cladding, flashing and roller blinds. 

  • Glazing

    Modular Skylights come with standard low-energy double or triple glazing with the following features: 

    • Insulated glazing (Ug values down to 0.5 W/m²K)
    • Toughened outer glass
    • Laminated inner safety glass
    • Falling through safety
    • Sound insulation (traffic, rain and hail)
    • Warm edge spacer (protects insulation properties over time and minimizes the risk of condensation at pane edges)
    • Step pane (leads water off the unit)
    • Sun protection coating (optional)
    Glazing units for VELUX modular skylights

    All glazing units come with step glass on the outer side to ensure water tightness (class E1200, EN 12208:2000).  

  • Performance

    The Modular Skylight profiles (sash and frame) are made of pultruded fiberglass (80%) and polyurethane composite (20%). The composite material provides high insulation performance and thermal stability as well as excellent profile stiffness and bending strength.  

    Due to the concept of prefabrication, we are able to test our products extensively against all thinkable hazards and stressful events. Tests are performed in controlled environments in accordance with harmonized standards for both Windows and doors and for Smoke and Heat control systems.
    Pre-fabricated VELUX modular skylights come with low energy glazing units to achieve low overall U-value

    In combination with low energy glazing units, the Modular Skyligths are able to achieve one of the lowest overall U-values for frame and glazing assembly in the skylight market (Uw values down to 0.86 W(m2/K)).  

VELUX Step Solution

Design with maximum daylight


Download our eBook and learn more about the coherent and elegant design of the VELUX Step solution that lets in maximum daylight and promotes a comfortable indoor climate.

Step solution - eBook

Step solution installed at Swedish school


Get an insight of how our Step solution provides more daylight inside of a new school building in Malmø, Sweden, to enhance children’s learning capabilities. 

Follow the installation of a Step solution closely and learn more about the advantages of integrating the new solution in commercial buildings.

Get inspired by our case studies