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Dome Rooflight Electric Hinged Vent Polycarbonate - Mardome Trade


12 sold in last 18 hours.

This Item is Made To Order

Maximum quantity available reached.
6 people are viewing this now.

Most sizes delivered within 2 - 3 working days.

High thermal performance
Clip-on features - fast to fit


No visible fixings
Simple neat design

Easy Fit

Made to Measure

Key Features

  • UK mainland delivery
  • Fast delivery
  • Great U values
  • Sleek, contemporary inside and out
  • Available in Single Double, Triple Skins and Quad skins
  • Many sizes available from 600x600mm up to 1800x1800mm
  • Various dome finishes available
  • Option to purchase Multiwall PVC kerb
  • Electrically operated with wall switch or remote

Click Tabs Below To Reveal More Information

Mardome Trade Dome Electric Hinged Vent Rooflight are available in sizes a range of sizes. Polycarbonate dome available in a huge range of sizes and options to satisfy any requirement with a choice of finishes and glazing types. The rooflight is supplied with an electrically operated hinge allowing additional ventilation and manufactured in the UK.

Please find installation guidelines below. A downloadable PDF link is at the bottom of this page along with a product data sheet should you require these to assist.

Range Of Sizes

If your requirements fall outside of what we supply, we will happily discuss your options and further guide you should you desire. Standard sizes are available in 150mm increments starting at 600x600mm all the way up to 1800x1800mm.

Instructions To Measure For Builders Upstand Installation

Measure external builders upstand

Acceptable tolerance:

 Fixed / unvented domes = dome size +20/-20mm

 Opening / vented domes = dome size +40/-20mm

For example, height of the upstand should be 150mm high and the width should be 75mm if you are fitting on a builders upstand. As demonstrated in red above, your external timber size should match that of your purchased item (drop-down menu on our website) e.g both should be 900x900mm. If you purchase a 900mm by 900mm from the drop down menu on our website your external timber size as shown in red above (Measure here) should be 900mm by 900mm.

Instructions To Measure for Domes With PVC Kerb

Measure internal roof opening

Acceptable tolerance = dome size +20/-30mm

For example, the drop-down menu on our website allows you to choose the measurement you require. If you buy with a 150mm or 300mm high upstand and you buy a 900x900mm from the drop down menu then your timber size (shown above in red) which is your structural opening size should also be 900x900mm.

Glazing Information:

*Centre pane U-value is a measure of the thermal efficiency of the glazing type.

#Ud-value is a measure of the thermal efficiency of the whole rooflight (calculated in accordance with NARM Technical Document NTD2).

~Glass glazing option is not available with the access hatch option and limits other opening options depending on size

Part L Building Regulations require a U-value of at least 2.2W/m2K: Brett Martin Daylight Systems recommend the use of at least triple skin rooflights in all applications

Tint Guidelines:

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

Clear - high visibility

Maximum transmission of light

Pristine vision of sights and all objects through the dome via maximum clarity

Opal - diffused light and solar control

A unique combination of high levels of diffused light transmission and privacy.

Ultimate prevention of solar glare and mass reduction of solar heat gain

Reduced visual capacity by impairing vision through the dome of sights and objects

Patterned - privacy

High levels of light transmission combined with personal privacy

The diffusion of natural daylight

The heightened impairment of vision through the dome


Builders upstand (opening / vented)

The dome comes with a uPVC frame. This attaches to the top of the builders upstand and all housing ventilation/opening equipment.

150mm uPVC

For mounting at roof surface level, providing 150mm of waterproofing height (exact kerb profile varies with specification)

300mm uPVC

Typically mounted below roof surface level, to provide 300mm of height for waterproofing and insulation

Trickle Vents

2 manually operated hit and miss trickle vents providing combined 8400mm² equivalent area ventilation. Please note trickle vents cannot be supplied with 450mm by 450mm size.


The design life of actuators is at least 10,000 cycles and where present, electrical actuators are guaranteed for 1 year. Our units are guaranteed for a period of 10 years but are anticipated to continue to be fit for purpose beyond this. We expect them not to distort and lose weather-tightness, not to become perforated or lose any major structural efficiency for around 20 years.



Mardome electric hinged dome rooflights can be operated with either a wall switch or remote. They are available in a wide variety of sizes and finishes, making it easy to find one that is perfect for your needs. The clean and contemporary design of these rooflights makes them an excellent choice for modern residential properties as well as commercial premises: if you are looking for rooflights that offer the perfect blend of style and functionality, the low profile polycarbonate design is sure to appeal to you.


Extra Ventilation and Light with Mardome Electric Hinged Dome Rooflights

An electric hinged dome rooflight is designed to serve two vital functions: to allow additional natural light into a room and extra ventilation. At the flick of a switch, the dome of the rooflight will rise roughly 30 cm, allowing fresh air from outside into any room in which it is installed. They are a great addition to both workspaces and residential buildings with flat roofs, helping to ensure the atmosphere remains cool and unstuffy, even on the hottest days of the year. 

High Thermal Efficiency

When closed, these triple-layer electric hinged dome rooflights are able to achieve a U-value of 1.8 W/m²K, ensuring that warm air does not escape during the colder months. If you are looking for a hinged rooflight that will help to keep a room cool in the summer and warm in the winter, this model is an excellent choice.

Optional Trickle Vents

One problem that afflicts many different types of polycarbonate rooflights is condensation but thanks to the intelligent design of the Mardome electric hinged dome, it is not something you will need to worry about. By choosing to add the optional trickle vents, you can ensure that your new rooflights remain clear and condensation free in all weather conditions.

Excellent Light Penetration

The low profile design makes these rooflights a stylish addition to any property but the designers were thinking about more than aesthetics when they created the low profile. It also improves the clarity of the light that penetrates into the space below, making Mardome electric hinged dome rooflights a great choice for any room in which you require a high level of clear, natural light.

These dome rooflights are made to order: simply select the desired design options and place your order online right now. If you need any assistance, feel free to call or email us.

Lead time for this product is 2-3 working days for the sizes below. Lead time for all other sizes will be on application, other sizes will be between 3-7 working days but this depends workload. 450×450, 600x600m, 750×750, 900×600, 900×750, 900×900, 1050×600, 1050×750, 1050×1050, 1200×600, 1200×900, 1200×1200, 1350×1050, 1350×1350, 1500×1050, 1500×1500, 1800×900, 1800×1200, 1800×1800 If remote and rain sensor options are selected lead time would be around 5 working days. .

Please note that the transport company is not responsible for delivering inside the property. They are not insured to do this so you will need to ensure an appropriate person is designated and on site to offload the product out of the vehicle once the driver arrives. Deliveries are all day deliveries; a text message will be sent with the delivery date to the mobile number provided with the order.

We recommend arranging equipment and installation after the item has been delivered. Please Note lead time to Ireland will be longer than the standard lead time above.

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