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Modular Skylights - Step Longlight and Step Ridgelight | VELUX Commercial
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Modular Skylights - Step Longlight and Step Ridgelight | VELUX Commercial

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  • Use

    Commercial and public buildings
  • Applications

    Galleries, circulation spaces, internal courts and large atriums
  • Characteristics

    Co-created with Foster + Partners, VELUX modular skylights provide daylight and fresh air through the roof and help create healthy, comfortable and productive indoor spaces. VELUX modular skylights are a turnkey solution comprising of prefabricated skylight modules with factory finished claddings and flashings ensuring a watertight solution, which is easy to install.
  • Sizes

    VELUX Modular Skylights require the following minimum and maximum measurements: Module width: 675-1000 mm Module height: 600-3000 mm 
  • Certification

    VELUX Modular Skylights: CE-marked in accordance with the harmonized standard EN 14351-1 – Windows and doors. Self-supporting Ridgelights are CE-marked in accordance with the European Assessment Document EAD 220013-01-0401 of 2017-03 as relevant harmonized technical specification. The load bearing capacity performance is expressed in the European Technical Assessment ETA 14/0476 of 2018-01-23 VELUX Skylight modules have been tested and approved in accordance with EN 12101-2 – Smoke and heat control systems Part 2: Specification for natural smoke and heat exhaust ventilators.
  • Guarantee

    10 years
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More about this product

Designed to provide daylight and fresh air through the roof, VELUX Modular Skylights help create healthy, comfortable and productive indoor spaces. The modular system can be configured to a range of different skylight solutions and offers several features for climate control, ventilation and shading.

VELUX Step Longlight

VELUX Modular Skylights are sash-frame constructed single skylights with a high-insulating glazing unit. All individual skylights are delivered as prefabricated modules with dedicated factory finished flashings to ensure watertightness in every solution. VELUX Modular Skylights are the result of several years of research and design by VELUX and Foster + Partners.‎


Step Longlight are multiple rows of VELUX Modular Skylights installed close to each other using joint brackets between the rows. Step Ridgelight solutions consist of a Ridgelight with one or more rows of Longlights below.


Step Longlight installations are applicable for a pitch of 5-25o. Step Ridgelight installations are applicable for a pitch of 25o. Step Ridgelight on Girder installations are applicable for a pitch of 5-25o.
For all Step solutions, the same installation pitch is required on all rows, while the maximum number of rows is the height of the lower module + 15 m.

VELUX Step Longlight


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

For further technical information you can access the following links:
- Installation Guides
- Specifications Sheets

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