Bespoke single unit flat glass rooflights that direct daylight into specific areas of a building

Monolight

Key benefits:

Maximum daylight through the roof without intrusive framing being visible from beneath
Prefabricated top unit and upstand for fast installation
Fixed or comfort venting solution
Bespoke sizes - ideal for refurbishment projects

Contemporary rooftop with skylights and gravel surface.

Imagizz Communication

Brangeon Office, Cholet, FR

Product variations

Monolight is a bespoke single unit rooflight which can transform a dull room by flooding the space with natural light from above. Due to the glass top construction the light incidence is maximised, meaning that the light area is equal to the hole in the roof. Monolight consists of a glass top unit and a wooden upstand and is available as a fixed or comfort venting unit.

Modular Rooflights are made to measure and can be configured, manufactured and delivered in bespoke sizes for specific requirements. Monolight fixed and venting are available as burglary-resistant versions according to EN 1627:2011 and NEN 5096-2012+A1:2015: Class 2 (RC 2).

Square VELUX roof window with wood and metal frame for flat roofs.

Monolight fixed

Monolight fixed is a non-venting single unit solution that provides daylight through the roof, and is a perfect solution when making natural light a priority. For a nice finish the builders inner lining can be connected into the groove just under the glazing.

Open VELUX roof window with wooden frame, providing ventilation and light.

Monolight venting

Monolight venting is an optimal solution where light and natural ventilation are required. An elegant and functional product, with a fully integrated chain actuator concealed within the wooden upstand. For a clean finish, the builders' inner lining can be connected into the groove just under the glazing.

Flat roof with VELUX roof window, urban landscape visible.

Monolight Burglary-resistant

Monolight Burglary-resistant is available as versions of Monolight fixed and venting. These products are approved according to EN 1627 and NEN 5096 Resistance Class 2. For a nice finish the builders inner lining can be connected into the groove just under the glazing.

Rooftop garden with plants, seating, and VELUX roof window.

Monolight Walk-on

Monolight Walk-on is a fixed single unit rooflight ideal when natural light is required under an accessible roof. For a nice finish the builders inner lining can be connected into the groove just under the glazing.

Construction

Modular Rooflights are produced off-site at our factory. Monolight consists of a glass top unit and a wooden upstand and is available as fixed or comfort venting modules. The wooden upstand is supplied from 150 mm up to 600 mm depending on project requirements. Monolight Walk-on is only available as fixed and with an upstand from 175-600 mm.

Interactive product sample

Our interactive product cut sample is a fully rendered and interactive 3D model that allows you to examine the shape and design of the Modular Rooflights Monolight in much greater detail than possible through photography alone.

Our model allows you to view the product from every direction and zoom in and out to view it up close.

Try it below.

Monolight module construction

Aluminium frame (height varies depending on glazing unit)
Insulating Glass Unit (IGU)
Silk screen print
Double gaskets
Upstand
Lining profile
Pre-wiring for roller blind

Further product details

Open roof window on a flat roof with gravel, view of sky and trees.

Open venting Modular Rooflight module with chain

Venting modules

In venting modules, the actuator is fully integrated in the wooden upstand. The actuator is not visible from the inside when the module is closed, thus there is no visual difference between fixed and vented modules.

Person wearing stylish shoes standing on a glass deck with reflection.

Monolight Walk-on with anti-slip

Walk-on modules

Monolight Walk-on is ideal when natural light is required under an accessible roof. It is available with a special 2-layer glazing unit with an optional anti-slip coating.

Triangular VELUX roof window with dark frame, modern design.

Modular Rooflights glazing unit

Glazing

Modular Rooflights can be designed with double or triple glazing units.

Frequently asked questions

What options are available for integrating Monolight rooflights with building management systems?

Venting Monolight rooflights can be controlled using either VELUX io-homecontrol® or Open System ±24V (OS ±24V DC) control systems. The Open System allows integration with common building automation fieldbus systems such as KNX, BACnet, LON, and Modbus through the integrated WindowMaster MotorLink™ technology.

How do the acoustic properties of Monolight rooflights perform in noisy environments or areas where sound insulation is important?

VELUX Modular Rooflights provide excellent acoustic performance: ratings of 52-49 dB for double glazing and 49-48 dB for triple glazing. These higher acoustic ratings make Monolight rooflights suitable for buildings in noisy environments or where sound insulation is important, such as schools, offices, or buildings near high-traffic areas.

How can I determine if my existing roof structure can support Modular Rooflights?

To evaluate whether your existing roof can support Modular Rooflights, an engineer will need to consider:

The dead load of the skylight system
The snow and wind load requirements for your location
The current load-bearing capacity of your roof structure
Any necessary reinforcements to the sub-construction

Can custom RAL colors be specified for the aluminum framing of Monolight rooflights to match building design schemes?

Yes, VELUX Commercial offers color customization options for Monolight frames to complement your building's aesthetic design. While the standard powder coating options are RAL 7043 and RAL 9005, both with a gloss 30 finish, we understand that architectural projects often require precise color matching. To accommodate this need, we can provide custom RAL colors upon request to ensure your rooflights integrate seamlessly with your building's design scheme.

How does Monolight address glare control in educational and office environments where visual comfort is critical for learning and productivity?

We offer several solutions for glare management in sensitive environments like schools and offices. The glazing units for Monolight come with different coating options specifically designed to control sunlight. For environments with high solar exposure, the Sun1 coating is available for both double and triple glazing, reducing light transmittance to 61% (DG) or 55% (TG) compared to the standard 80% and 71% respectively, while significantly reducing solar heat gain.

Additionally, the Monolight can be equipped with roller blinds in white, grey, or black fire-retardant fabric. These blinds are designed with thin, free-floating wires creating an invisible effect, allowing for flexible daylight and glare control throughout the day as lighting conditions change. The blinds can be integrated seamlessly with the rooflight system and operated through the same control systems that manage the ventilation.

This comprehensive approach to glare management helps create comfortable visual environments in schools where students need optimal conditions for learning and concentration, and in offices where screen work requires balanced lighting to reduce eye strain and maintain productivity.

How does Monolight handle water drainage and protection against standing water in flat or low-slope roof installations?

VELUX Commercial Modular Rooflights, including Monolight, can be installed in flat and pitched roofs from 0° up to 15°. A minimum 3° pitch on the module installation is recommended to avoid ponding water on the glass surface. The watertightness of Monolight has been tested and achieved Class E1200 under EN12208 and EN1027 standards – meaning it resisted wind-driven rain at 1200 Pa without leaking. It is a top-tier rating, indicating excellent performance for watertightness.

Can Monolight units be combined with smoke ventilation (SHEV)?

No, Monolight does not have a SHEV variant.

What weight load can the Monolight Walk-on variant support?

The modules are designed to comply with a live load (person) of 5 kN/m2 according to Eurocode EN 1991-11 using and DIN 18008-5.

Please note that it is the sole responsibility of the customer to verify the product’s suitability for the intended purpose by means of using the relevant local requirements and load scenarios.