Hampton Conservatories explains why getting the roof lantern element of an orangery ‘just right’ is so important and why that may mean going bespoke.
Specifying a roof lantern with the correct proportions is hugely transformational, adding a timeless elegance to a property. However, a roof lantern that is not of the correct scale or composition will at best mean the room does not fulfil its potential and at worst, could mean it is not fit for its intended purpose.
Traditional orangeries
In traditional orangery design, the roof comprises two elements – a multi-faceted roof lantern which creates an elevated ceiling – and secondly, a flat roof area around the perimeter.
To be in-keeping with the host property and to stay in line with classical architectural principles, there are some rules which an orangery designer will apply when designing a roof lantern. The main source of inspiration for this front will be the current roof angles as well as important sight lines from upper windows.
Roof lantern design
Roof lanterns themselves may be square, rectangular, or octagonal and can extend upwards incorporating a clerestory or cupola. Clerestories date back to Egyptian times and are best described as an angular raised area of glazing that sits atop the main roof lantern. A cupola is similar but often a more intricate domed shape. Both are designed to enhance the space and light in the room below, and give greater stature to the structure.
As well as choosing the size and shape of the roof lantern, consideration also needs to be given to the dimensions and spacing of the individual roof lantern beams (the ‘jack’ rafters) and the design of the hip rafters (the key structural beams that span from the corner of the lantern to the central middle ridge). Most roof lanterns are designed with straight rafters giving beautifully clean lines but a more curved hip shape can be incorporated, which raises the height, allows more light to penetrate, the result of which can be even more striking.
The designer should also take into account how the room will be used and where the sun falls throughout the day. Specifying multiple roof lanterns over one room can be used to help zone a larger open-plan space as well as build in some shaded areas below. Ultimately the orangery needs to be flooded with light in designated areas, whilst also optimised for areas of shade and the projection of dramatic shadows as the sun shifts throughout the day.
Finally, glass can be standard double glazed, solar, or low maintenance depending on the environment and homeowner’s preference. Automatic thermostatic ventilation and rain sensors can also be incorporated to maintain a comfortably indoor environment.
Mervyn Montgomery, joint director of Hampton Conservatories said: “A roof lantern is the very essence of an orangery and therefore often the main talking point of the room. Choosing a bespoke roof lantern is the best way to ensure neither form or function are compromised in a new orangery. Discerning homeowners will fully understand the Goldilocks principle and why getting a roof lantern ‘just right’ is so important.”
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For more information, commentary and images please contact:
Rosey Bowring or Ali Cort
Browser Media
0207 099 0945
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Portrush-based Hampton (Hampton Conservatories) was founded in 1982 by Mervyn and Kim Montgomery and has since become a leading designer and manufacturer of bespoke hardwood glass buildings. It has developed unrivalled expertise in producing award-winning bespoke conservatories, orangeries, swimming pool enclosures, botanical glasshouses, garden rooms, and glazed pavilions.