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.

Step Solutions (formerly Vitral A74 and A98 Roof Glazing)

Multiple rows of glazing panels connected for large daylight influx

Suitable for:

  • Flat and sloped roofs
  • Flat and textured roofing material
  • For extra large roof openings
  • Installation pitch between 25-60°

Key benefits:

  • Prefabricated yet bespoke glass system
  • Various corner solutions enable design freedom
  • Slim and shallow profiles for optimal daylight influx
  • No visual difference between fixed and venting panels from the outside
Dual pitched solution in steps with hipped gables at the Metro Shopping Centre in Great Britain. Intertior view.
See gallery

Related documents and links

Products details

  • In short
    A step solution is configured by installing multiple rows of panels on top of each other using a structural beam to connect the rows. Mono pitched step solutions can be installed between 15-90°. Dual pitched step solutions can be installed between 25-60°.

    The glazing panel system offers multiple corner solutions as hips, valleys and vertical glass gables, making the system rather bespoke and ideal for refurbishment as it can be designed to fit an already existing hole in the roof.

    The panels and main parts of the accessories are pre-fabricated off-site, thus facilitating a quick and safe installation.

    VELUX Glazing Panels are delivered with a 10-year guarantee on panels and flashings. Actuators and electrical components that are a part of the glazing panel system come with a 3-year guarantee.

    VELUX Glazing Panel specialists offer support throughout design, specification and installation, including a project specific sub-construction drawing with measurements for the outer geometry. Please note that sub-constructions are not included in the VELUX offering.

    Dual pitched glazing panels in steps with hipped gables

    Dual pitched step solution with hipped ends.

    A hip is an outward going corner solution used to connect two sloped sides.

    A hip is an external facing corner solution used to connect two adjacent sloping sides of a rooflight.

    Valley corner solution for a mono pitched rooflight

    A valley is an internal facing corner solution used in the intersection between two individual rooflights.

  • Details
    The prefabricated panel consists of aluminium frame profiles with a glazing unit sealed in using a UV resistant sealant material. When the panels are joined together on-site, the outer gasket and an inside drainage profile must be mounted to secure drainage.
    The glazing panel system is delivered with installation profiles, gaskets and flashings, ensuring a weathertight solution.
    Modular rooflight monolight module construction

    Double glazing
    Panel joint height 82 mm
    Panel joint width 50 mm 

    Triple glazing frame profile cut for glazing panels

    Triple glazing
    Panel joint height 106 mm
    Panel joint width 52 mm

    Venting VELUX Glazing Panels have several options of actuators when specifying the panels. It is possible to convert a rectangular fixed panel to a venting panel by post-installing a visible actuator and a crossbar.
  • Function and sizes
    VELUX Glazing Panels are available in a wide range of sizes and functionalities:
    Illustration of VELUX Glazing Panel mono pitched solution
    1. Fixed panel – rectangular or shaped
    2. Motorised comfort venting panel
    3. Motorised smoke venting panel


    See size possibilities for fixed and venting modules.
    Go to size options

    VELUX Glazing Panels have a recommended minimum installation height of 2.5 m above floor level (inside) and ground level (outside). 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 Glazing Panels come with standard low-energy double or triple glazing with the following features:

    • Insulated glazing unit (Ug values down to 0.5 W/m2K)
    • Toughened outer glass (optional)
    • Heat soak tested (optional)
    • Laminated inner safety glass
    • Warm edge spacer (protects insulation properties over time and minimizes the risk of condensation at pane edges)
    • Sun protection coating (optional)