Quantal P Shape

Quantal Atriums

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Explore the Quantal Aluminium Atrium

The Quantal aluminium atrium, or lantern roof, is perfect for a new build or refurbishment. When specified RAL 7016 (grey) it ensures the rooflight atrium blends into the surrounding roofscape. Internally, the room below is flooded with light. A lantern roof allows for higher proportions of the ceiling when compared to traditional orangeries - and the Quantal rooflight atrium (available from ‘stock’ in white - plus a range of other RAL colours) can be fitted ‘in series’ across a large flat roof.

The Quantal atrium roof features a low height eaves beam, which is fastened to a timber kerb or low height lantern frames. The lantern roof improves thermal performance by reducing the potential for cold bridging. If a gutter is required, or if Heritage internal cladding is required, then the lantern roof is upgraded to the standard eaves with a height of 118mm. The Quantal aluminium atrium is a viable alternative to a full orangery system.

Quantal Internal Grey Image

The Quantal Atrium is Suitable for Conservatories, House Extensions and Orangeries

Whatever your home improvement aspirations might be, the Quantal Atrium will make your project a success. Its inherent flexibility means its design can be adapted and applied to suit almost any existing or proposed structure – including conservatories, home extensions and orangeries. The possibilities are almost endless with this innovative lantern roof.

The versatility of the Quantal Atrium becomes evident when its combined into the design of our classic orangery. Whether you opt for traditional brick piers or super insulated columns, your structure will be perfectly offset by a stunning lantern roof that’s designed with light and warmth in mind and will work with the internal ceiling pelmet to deliver absolute comfort.

If you’re planning on adding an extension to your home, take a look at our beautiful glass extension. The addition of a Quantal Atrium roof will complete the much-coveted garden room look you want to achieve, which will work in perfect contrast with masonry piers or super insulated columns. Your lantern roof will add a vital finishing touch to your new room.

Quantal Internal Image

Three Reasons to Choose the Quantal Aluminium Atrium

A Lantern Roof That’s Strong

Are you looking for a lantern roof that will transform your home and retain its looks and strength for years to come? Then look no further than the Quantal Atrium. Because it’s built from aluminium, its incredibly strong, which means it will stand up to the worst of the British weather – while still preserving its fine sightlines. This secures a beautiful finish.

We’re so confident in the lasting quality of the Quantal Atrium, we offer a 10-year manufacturer’s guarantee that will protect you if your product fails. You’ll be able to buy your lantern roof with confidence – knowing its structural integrity will last and is fully backed by Ultraframe in the unlikely even rectification work is needed.

A Lantern Roof That’s Flexible

Aluminium isn’t just strong. It’s intrinsically flexible. How is this feature of benefit when planning your orangery or extension? Less material will be needed during the construction of your lantern roof, which means your structure will have a low frame-to-glass ratio – resulting in near-unimpeded views of the sky and an influx of space-creating light.

The addition of a Quantal Atrium will, therefore, add market-value to your home. Your lantern roof will look stunning when viewed from the outside while turning the space below it into a room that can be used throughout the year and for almost any purpose – for example, a dining room, lounge or study. The only limit is your imagination.

A Lantern Roof That’s Efficient

If you’re planning on adding an orangery or extension to your home, you may have discounted the idea of an atrium roof – because, although it will let in plenty of light during the day, its high proportion of glass will allow warm air to escape in the evening or at colder periods. Fortunately, The Quantal Atrium is a lantern roof with a difference.

To prevent heat escaping through the glazing in your lantern roof, the Quantal Atrium roof kit will fix on to a timber kerb or lantern frame. This improves its thermal efficiency of the structure, which can also accommodate internal cladding if guttering is needed. Your new room will be a comfortable place to spend time – whatever the weather.


  • Lean-to hipped conservatories
  • Georgian
  • Lean-to
  • T-Shape
  • Gable
  • Ultra83B high performance
  • Quantal aluminium atrium
  • Double glazed sealed units
  • Performance glass
  • Polycarbonate
  • Classic PVC
  •      Flat roof
  • Re-inforced eaves option for lean-tos, gables and wide doors
  • An array of finials and crestings
  • Heritage internal cladding
  • Wide span glazing bars
  • Eavesflow trickle vent
  • A choice of RAL colours
  • Internal ceiling pelmet
  • A choice of ridge ends
  • Internally and externally sleeved aluminium to optimise thermal performance
  • Chambered combi eaves and box gutter
  • Speedlok attachment to die-cast end
  • Eaves height up to 118mm
  • Low height eaves beam
  • BBA accredited 

Certain thermal efficiency guidelines and recommendations are laid down by the GGF and Passivhaus Institute. The Quantal Atrium will meet – but, often, exceed these parameters – to ensure your new room is comfortable. The correct combination of high-performing doors, windows and glazing will further boost the thermal performance of your Quantal Atrium.

Your new lantern roof will be designed to last. If the unexpected happens, your Quantal Atrium will be covered by a 10-year manufacturer’s warranty. Please check the level of guarantee that comes with your product before instructing your chosen UltraInstaller to proceed with any work.

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Mr Macfarlane and his wife are delighted with their new extension, which has added a new dimension to the downstairs of their home and transformed an unused conservatory into a valuable and beautiful living space.

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“My old conservatory was outdated in terms of its thermal technology. I wanted somewhere to relax and enjoy the tranquillity of my garden at any time of year.”

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A room with a view

The aim of this project was to create a large light-filled Orangery that would feel bright and airy, whatever the weather.

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