Step Longlight/Ridgelight

The Step solutions utilize the same high-insulating components as standard VELUX Modular Skylights. They feature pultruded composite frames with excellent thermal properties and high-performance glazing options. The U-values range from 1.3-1.5 W/(m²K) for double-glazing modules and improve to 0.86-1.1 W/(m²K) for triple glazing modules. The factory-finished flashings ensure proper sealing at all connections.

The Step solutions offer several advantages over traditional flat skylights: they can span much wider openings (up to 18 m for Step Longlight, up to 33 m for Step Ridgelight, and up to 36 m for Step Ridgelight on Girder); they provide better light distribution across multiple levels; they offer greater design flexibility for buildings with different roof heights; and they utilize the fast-installing modular system.

All VELUX Commercial Modular Skylights achieve high ratings for resistance to wind load (Class C5), watertightness (E1200, tested up to 155 km/h wind speeds), and air permeability (Class 4).

Aluminium surfaces and glass panes can be cleaned with water and ordinary household non-abrasive and non-corrosive detergents. Polyurethane surfaces are maintenance free but can also be cleaned using ordinary household non-abrasive and non-corrosive detergents. We recommend cleaning the skylights at least 1-2 times a year depending on the installation setting. Standing directly on the skylight pane is strictly forbidden. It is recommended to have the modules cleaned by a professional, as they will have the right tools to clean the modules without stepping on them.

Yes, when using venting modules, the Step solutions can be controlled with either VELUX io-homecontrol^® wireless system or an Open System solution (±24V DC) that can connect to building management systems via protocols like KNX, BACnet, LON, and Modbus. This allows for automated operation based on temperature, time schedules, or environmental conditions.

Our fixed fire-resistant modules (HFS), rated REI 30, are compatible with our Step solutions. This means they can contain fire within a compartment for a minimum of 30 minutes.

Please note that the special HFS installation instructions—particularly regarding the application of sealant and the protection of the lining and bracket areas—must be strictly followed. The REI 30 classification is only valid if these guidelines are adhered to without exception.

It is the customer’s responsibility to ensure that the sub-construction meets the required fire resistance performance of the roof. When installing HFS modules in combination with a Step solution, the user must also ensure that the supporting structures between module rows are designed to meet the roof’s fire resistance requirements. Failure to do so may compromise the overall fire performance of the HFS installation.

The Step solutions create a distinctive architectural feature that adds visual interest to buildings. They allow for creative daylighting solutions for buildings with different roof heights or levels. The design provides a modern aesthetic that can be particularly striking in large spaces.

Step solutions use the standard VELUX flashing system, adapted for the step configuration. The factory-finished flashings are designed to ensure watertightness at all connections, including drainage of water between the rows.