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Made in UK

Thermal Performance

Building Regulation Compliance

Easy Fit


AOV Rooflight Smoke Vent

The AOV Rooflight Smoke Vent from is perfect for any flat-roofed building. These individual dome roof lights are engineered using contemporary polycarbonate, making them long-lasting and reliable. Not only that, but they also help to flood your building with natural light.

These AOV Rooflight Smoke Vents offer excellent comfort ventilation thanks to their natural exit route for heat exhaust ventilation and smoke. As an added bonus, every AOV Rooflight Smoke Vent is designed, manufactured and tested in the UK – so you can be sure of quality workmanship.

For a reliable AOV Rooflight Smoke Vent solution that provides outstanding performance and an abundance of natural light in your building.

This is the ideal solution for your flat-roofed building. Enjoy the safety, performance and natural light provided by these reliable AOV Rooflight Smoke Vents – choose one today!

Fitting and Measurements

A correct fit is vital to deliver the expected performance. Please refer to the fitting instructions set out below. You can also download the product data sheet and the PDF with this information which can be found at the foot of the page.

Choice of Sizes

The rooflights are available in standard sizes, starting at 1050mm x 1050mm increasing incrementally up to 1800mm x 1800mm. If you don’t see the size you need, please get in touch and we’ll be delighted to help with bespoke dimensions.

Fitting to Builders Upstand: How to Measure

To get an accurate fit it’s essential to measure both the internal and external builders upstand.

Acceptable margin:

Internal builders upstand = (dome size - 150mm) +20/-0

External builders upstand = dome size +40/-20mm

The required upstand height is 200mm and the width is 75mm if you are arranging your own installation. For example, a structural opening of 900mm x 900mm would be the result if you chose the 1050mm x 1050mm option from our available menu options.

Domes With PVC Kerb: How to Measure

Begin by measuring the internal opening of the roof.

Acceptable margin:

Dome size +20/-30mm

For purchases which are made that include an upstand, the measurements on our order menu will refer to the structural opening. This can be seen highlighted in red on the above diagram. If you are fitting onto an existing upstand, this does not apply.

Fitting Video Guide

Fitting Video Guide


Glazing Details:

The thermal efficiency of the type of glazing is provided in the Centre Pane U-Value.

The thermal, efficiency of the entire rooflight is provided in the Ud-Value. This has been calculated as per the NARM Technical Document NTD2).

The U-value must be a minimum of 2.2w/m2K to comply with Part L Building regulations. Triple skin rooflights are recommended by the manufacturer for all applications.


The light transmission properties of the Reflex polycarbonate rooflight are displayed in the table below:

The qualities each type of tint offers is as follows:

Clear: High Visibility

  • Optimal light transmission
  • Improved visibility throughout the dome
  • Enhanced transparency

Opal: Solar Reduction and Diffused Light

  • Combines maximum generation of diffused light with privacy
  • Reduces solar heat gain and blocks solar glare
  • Minimises visibility through dome

Patterned: Enhanced Privacy

  • Enhances transmission of light while protecting privacy
  • Minimises visibility through dome

Bronze: Solar Reduction

  • Minimises heat gain and solar glare
  • Delivers lower light transmission

Optional Extras

To find out more about the optional extras available, please get in touch with us today.


You can also get an AOV rooflight, in addition to a range of rooflights and skylights.

Available accessories include:

  • Fireman’s Priority Switch
  • Fire Switch
  • Smoke detector
  • Control Panel (certified to EN12101-10)


The majority of sizes will be delivered within 7-10 working days. Deliveries to Ireland will be longer; please enquire for more information.

A suitable person should be available and ready on site on delivery to unload the product from the vehicle.

Equipment and installation should be arranged after successful delivery of the product.


TB286 Installation Mardome Trade Smoke Vent
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Mardome Smoke Vent Rooflight Brochure
Mardome Smoke Vent CAD Drawing