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Dome Rooflight Manual Hinged Vent Polycarbonate - Mardome Trade


14 sold in last 19 hours.

This Item is Made To Order

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

Most sizes delivered within 48 hours. 

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
  • Manually operated with a pole to open

Click Tabs Below To Reveal More Information

Mardome Trade Dome Manual 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 opened manually by an operating pole that is used to wind the rooflight open and closed by hand.

You can find installation guidelines below. A downloadable PDF link is also available at the bottom of this page along with a product data sheet to provide extra assistance.


If your product size doesn't match our sizes displayed, we offer to assess options to progress if you deem necessary. Standard sizes are available in 150mm increments starting at 600x600mm and go up to 1800x1800mm.

Measuring Guide for fitting to builders upstand

Take external builders upstand measurement

Acceptable tolerance:

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

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

As an example, if fitting on a builder’s upstand, the width should be 75mm and height of the upstand should be 150mm high. 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.

Measuring Guide for domes with PVC kerb

Take the measurement of the internal roof opening

Acceptable tolerance = dome size +20/-30mm

For example, the drop-down menu on our website allows you to select the measurement you desire. If you purchase with a 150mm or 300mm high upstand and you purchase a 900x900mm from our drop down menu then your structural opening size will be 900x900mm as shown in red above. The timber size as shown in red above (Measure here) should be 900mm by 900mm.

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.


To see the light transmission properties of the polycarbonate rooflight, look at the below table

Clear - high visibility

Light transmission maximised

Clarity of vision of views and objects through the dome maximised

Opal - diffused light and solar control

Privacy in tandem with elevated levels of diffused light transmission

Reduced solar heat gain and no solar glare

Restricts sight of views and materials through the dome

Patterned - privacy

Privacy fused with elevated levels of light transmission

Reduced daylight

Impairs vision of sights and objects through the dome structure

Builder’s Upstand:

Builders upstand (opening / vented)

Dome is supplied complete with uPVC frame that fixes to top of builders upstand and houses any opening / ventilation equipment

150mm uPVC

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

300mm uPVC

For mounting typically below roof surface level, providing 300mm of height for insulation and waterproofing

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.


A 10 year manufacturers warranty is supplied.



Mardome manual hinged dome rooflights are designed to be installed in all types of flat roofs on modern residential and commercial buildings. The low profile design ensures they will blend in with all types of exterior décor and surroundings, providing additional natural light and ventilation effectively and unobtrusively. For standard sizes, we offer a 2-3 working day delivery service to all mainland UK addresses. For custom sizes, the lead time is approximately 3-7 working days.

Easy to Install and Easy to Use Manual Hinged Dome Rooflights


These rooflights have been designed to be both easy to install and easy to use. Because they are manually operated, there is no need for any electrical installation work:  the domes can be opened and closed with the supplied winding rods. The concealed hinges operate smoothly, ensuring that any able-bodied adult can open the domes quickly and with a minimum of effort.

Keep Your Property Comfortable in All Seasons


Once installed, manual hinged dome rooflights make it easier to control the indoor climate in any type of space with a flat roof. If the atmosphere should become stuffy and unpleasant, simply open the domes and you will increase the ventilation in the space significantly. Each dome rises approximately 30 cm when opened fully, ensuring an ample supply of fresh air whenever it is needed. When the weather turns cold, you will be pleased that you opted for a triple-layer polycarbonate rooflight, with a centre-pane U-value of 1.8 W/m²K. This rating is well within the guidelines laid out in Part L of the Building Regulations in the UK, which cover the requirements for energy-efficient spaces in commercial and residential properties.

Safe and Durable Manual Hinged Dome Rooflights

The outer dome of the rooflights is fabricated from 3 mm-thick, impact-resistant polycarbonate sheeting with a UV coating on both sides. This helps to reduce the possibility of accidental damage and minimises the amount of ultraviolet light that passes through. The fixings that are used to attach the rooflights to the roof are concealed inside tough security caps, providing outstanding protection against vandalism and theft. Furthermore, the risk of condensation is mitigated through the separation of the glazing skins across the entire span of the dome.

Select your desired options and place your order now. And don’t forget, we are always here to help if you require any more information or personal assistance with your purchase.

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 .

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.

We recommend arranging equipment and installation after the item has been delivered. Deliveries are all day deliveries; a text message will be sent with the delivery date to the mobile number provided with the order. Please Note lead time to Ireland will be longer than the standard lead time above.

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