The Square One

• Our opening feature allows natural, healthy ventilation of your home, the mechanism is completely invisible as the motor is beautifully integrated into the upstand
• The walk-on feature is available to you on all fixed square edged rooflights up to 2 m²

Our insulated glazing units offer you the option of double glazing or triple glazing units for your rooflight. Choose double glazing for the maximum daylight drenching effect or triple glazing if superior energy saving eco credentials are your priority.

All our glazing units:

• Come with a laminated inner pane, which we consider a prerequisite for safety measures 
• Use three different glazing constructions to ensure the best quality and durability for our larger glazing units
• Have warm edge spacers to ensure a thermal breakage and energy efficiency
• Come with a 115 mm black silk screen to protect the underlying gasket system and for aesthetic purposes

As an example, our triple glazing has a LowE coating with a superior insulating value of Ug 0.5 and a light transmittance of 71%. We use an 8 mm toughened outer pane and a 12.76 mm (66.2) laminated inner pane, separated by two argon gas fillings for thermal performance. See all the specific values of our glazing constructions in our glazing table.

The Square One comes with a wooden upstand that uses rock wool insulation to keep your home snug. The natural wood allows for an easy and safe installation and is a perfect match to the remaining rooflight construction.

Our upstands come with:

• A superior pre-fitted gasket system, ensuring a 100% tight and secure connection between the frame and upstand construction
• A pre-installed vapour barrier, which ensures a safe and easy connection to the roof itself
• An internal surface treated with a membrane of water based white coating (RAL 9010) on the waterproof plywood
• An external surface of untreated waterproof plywood, which is great for applying roofing felt or other flat roofing materials

Our upstands come in 150 mm and 300 mm, depending on project requirements and architectural specifications. 

For customised upstand heights, please contact us.

In our opening rooflights, the chain actuator is fully integrated in the wooden upstand. The actuator is not visible from the inside when the roof window is closed, thus there is no visual difference between fixed and opening rooflights.

A module with motorised ventilation is operated by either one or two actuators, depending on the clear internal area and the width of the window:

• A double glazing rooflight needs two actuators if the product is larger than 2 m² or has a width wider than 2000 mm
• A triple glazing rooflights needs two actuators for a product which is larger that 1.5 m² or has a width wider than 2000 mm

The Tech Stuff:

• The actuator uses 3 amp and must be controlled by a separate OS ± 24V system
• In the OS ± 24 V, the actuators are controlled by ± 24 V DC 
• For the OS ± 24V, the actuators, control units and switches are supplied by Vario by VELUX
• For two actuators, there will be a need for a larger control unit, which will be supplied by Vario by VELUX
• The actuator can be integrated in common building automation fieldbus systems, e.g. KNX, BACnet, LON and Modbus, through the integrated MotorLink™ technology. Connection to a fieldbus system requires a separate control box between fieldbus system and actuator