03 Jun

We Love… Roof lanterns

If you are considering having a roof lantern in your extension then there are a few things that you should consider

A multi-paned glass structure, roof lanterns can resemble small buildings, especially when vertical glazed side frames are added. Usually incorporated into a flat roof construction they are fantastic features of garden rooms and orangeries, enabling natural light to flood into the space below and into adjacent rooms.

Design
The size and shape of the roof lantern is very important. Whilst there is a certain element down to personal choice, generally keeping the roof lantern in proportion with the shape of the room is advisable; a rectangular roof lantern for a rectangular room, for example. However, depending on how you plan on using the room, there might be exceptions to the rule – two square (pyramid) roof lanterns could be installed to highlight different areas, whilst maintaining the overall proportions. Equally, a roof lantern placed above a dining table or a kitchen island can be a real focal point and define a space.

Ventilation
To ensure your space has practical use all year round it is always recommended to have some form of ventilation, particularly if the room below is south facing and receives a lot of direct sunlight or if the space is a kitchen where lots of heat and steam will be generated.
Opening ventilators positioned in the roof will draw warm air up and out. These function electronically, either with the touch of a button, or can be fitted with thermostatic rain sensor that operates the vents automatically. When a roof lantern has been designed with vertical side frames it is possible to have some of those sashes open instead.

Glass Type
We use 4-16-4 toughened clear panes (4mm panes with a 16mm gap in between). These are filled with argon gas and have a Low E coating ensuring the building performs efficiently all year round.

The benefits of using this glass include less heat transmission, which in turn saves energy and keeps the room at a more consistent temperature than with air-filled double glazing or single glazed panes. It also provides an element of sound insulation. Further optional enhancements include solar reflective coating which reduces glare and minimizes UV by up to 98%.

The Overall Room
Think about the orientation of the house; if your extension is not south facing a roof lantern might be a good idea to ensure that you get maximum sunlight. You might also want to consider how the sunlight will fall in the room throughout the day. Think about how you plan to use the room and how the light will affect the different areas.

There’s no doubt that a roof lantern can add an extra dimension to the ‘wow’ factor of a garden room or orangery, but many people overlook these seemingly simple things. As experts in glazed extensions, we can help you with any queries or concerns – our bespoke approach will ensure that you get a beautiful room tailored to fit your home and lifestyle.

Read more on climate control in garden rooms, or view some of our projects incorporating roof lanterns. If you would like to talk through the options available for glazed extensions and roof lanterns, please get in touch.