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Flat Roof Windows

Open up your home to more daylight with windows specifically designed for flat roofs. Flat roof windows naturally connect your indoors to the sky above, making rooms feel lighter, fresher and more welcoming. Explore the full collection below.

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Flat Glass Rooflight

The Brett Martin Flat Glass range is easily installed, and features laminated inner panes as standard.

From £394.68
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Circular Glass Rooflight

Bring maximum daylight to contemporary interior spaces with the Circular Glass Rooflight

From £1269.00
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Glass Link Modular Rooflight

Glass Link Modular Rooflights fill your home with natural light, transforming dark rooms into bright, open spaces with a sleek, modern touch.

From £1310.40
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Custom Size Flat Glass

The custom size flat glass rooflight range by Brett Martin is easily installed, and features laminated inner panes as standard.

From £764.00
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Mardome Trade Fixed Polycarbonate Rooflight

The Mardome Trade Fixed Polycarbonate Rooflight delivers high-performance natural daylight with a cost-effective, durable, and easy-to-install solution for flat and low-pitched roofs.

From £121.50
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Mardome Trade Opening Polycarbonate Rooflight

The Mardome Trade Opening Polycarbonate Rooflight offers controllable ventilation and high-impact daylighting for flat and low-pitched roofs, with durable, easy-to-operate design.

From £317.25
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Mardome Access Hatch Polycarbonate Rooflight

The Mardome Access Hatch Polycarbonate Rooflight provides daylight and practical rooftop access, offering a secure and easy-to-use solution for flat and low-pitched roofs.

From £492.75
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Mardome Smoke Vent AOV Polycarbonate Rooflight

The Mardome Smoke Vent (AOV) Polycarbonate Rooflight provides a certified smoke and heat exhaust ventilation (SHEV) solution, combining safety, natural light, and high-performance durability for flat and low-pitched roofs.

From £1436.25
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Mardome Circular Polycarbonate Rooflight

Bring natural light and modern design to your space with the Mardome Circular Polycarbonate Rooflight, a stylish and durable dome solution, ideal for flat roofs and low-pitch applications.

From £118.50
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Mardome Reflex Polycarbonate Rooflight

Enhance your space with the Mardome Reflex Polycarbonate Rooflight, a robust, dome-shaped rooflight designed for easy installation over existing openings, bringing natural light and durability to any flat roof.

From £121.50
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Discover Our Range of Flat Roof Windows

Flat roof windows change the way your home feels, flooding darker rooms with soft, natural daylight from above. They bring light deeper into your living spaces, making every corner feel more open, fresh, and connected to the outside world.

Crafted with high-quality Brett Martin low-e double glazing, each unit is designed to maintain year-round comfort. Choose between clear or blue-tinted glass to suit your style, both come with a self-cleaning coating that helps keep your windows looking great with minimal maintenance.

Our range includes sleek flat glass rooflights, striking circular roof lights, and versatile modular glass rooflights, giving you flexible design options for any flat roof project.

To bring natural light into every part of your home, explore our full collection of flat roof windows above.

Flat Roof Windows FAQ

What are the benefits of installing flat roof windows?
Flat roof windows are an excellent way to maximise natural light in areas such as extensions or single-story rooms, which often lack conventional windows. They can also improve ventilation and provide access to roof terraces. Additionally, flat roof windows can enhance the aesthetic appeal of a space, making rooms feel more open and airy, which is particularly valuable where natural light can be limited during the winter months.
Are flat roof windows energy-efficient?
Yes, flat roof windows are designed to be energy-efficient. Many models feature double or triple glazing, low-emissivity (low-E) glass, and thermal breaks, all of which help reduce heat loss and improve energy efficiency.
Do flat roof windows require planning permission?
In most cases, flat roof windows do not require planning permission if they do not protrude more than 150mm from the roof plane and comply with local building regulations. However, if you live in a conservation area, an Area of Outstanding Natural Beauty (AONB), or a listed building, or if the window significantly alters the roofline, planning permission may be required. Always check with your local planning authority before proceeding.
How durable and weather-resistant are flat roof windows?
Flat roof windows are built to withstand variable weather conditions. High-quality models use durable materials such as aluminium, uPVC, or treated timber, paired with advanced sealing and glazing to prevent water ingress, drafts, and condensation.
What maintenance do flat roof windows require?
Maintenance requirements for flat roof windows are minimal but important. Regular cleaning of the glass is recommended to prevent dirt and algae build-up. Periodically check seals and frames for any signs of wear or damage to ensure continued weatherproofing. Many modern flat roof windows offer self-cleaning glass, which is particularly beneficial in areas with higher rainfall.
Can flat roof windows be opened for ventilation?
Yes, many flat roof windows are designed to be opened, either manually or electronically, to provide ventilation. Some models include rain sensors that automatically close the window when it starts raining, which is particularly useful for unpredictable weather. Options such as remote control operation are also available for added convenience.