5 Easy ways to keep your orangery warm in the winter

Tips on looking after your garden room in winter

No need for winter concerns when considering owning an orangery and here’s why…

Let us put your mind at ease because in fact, orangeries can be incredibly warm and welcoming spaces over the winter, and still feel comfortably cool over the summer months. There are 5 easy ways to heat your orangery this winter.

So, you may ask why do people worry that orangeries get cold in the winter? It’s likely down to the poor reputation of old-fashioned glazed rooms, that were unusable for 6 months of the year. But over the last 30+ years we’ve seen great advancements in glazing technology enabling you to use your orangery the same as any room in the house all year round.

Here are our 5 easy ways which help Westbury orangeries stay warm in the winter:


It goes without saying if you want to hold as much heat inside your home as possible, you will need to insulate the building. Orangeries in particular feature dwarf walls, built columns and a flat roof, all of which can be fully insulated and help to reduce warm air from escaping. In addition, high performing weather seals should be used across all doors and windows to prevent the cold air from outside from entering your home.


With a large area of an orangery being glazed, it is important to also minimise the heat loss through the glazed panes. That’s where an understanding of U-values come in. U-values are calculated by finding the sum of thermal resistance, the lower U-value the better your glass will perform in the winter as the glass allows a low amount of heat transference. The same principle can be also applied to the windows during the summer, with less warm air being transferred from the warm air outside, into your home.

Large orangery extension, seen from a distance


Lanterns are a great way to bring in a lot of natural light, but also surprisingly they are very thermally efficient. How you ask? We use toughened, argon filled, 4-16-4 units with warm edge spacer bars as standard. What does all that mean exactly? It means that each toughened pane experiences minimal heat loss throughout the winter and each edge of the sealed glazed units are kept apart to prevent cold bridging. What is a cold bridge? It is a gap between two insulated parts. This gap is colder than the surrounding areas and can lead to a build-up of condensation, causing windows to lose heat. This can also lead to the deterioration of the building, mould growth and damp. A well insulated lantern will stop these issues and keep your orangery warmer throughout the winter months.


What is another way to keep warm in an orangery you ask? We would recommend underfloor heating. Orangeries are known to have lot of window area and little to no opportunity to hang radiators, with orangeries becoming the only room within your home that doesn’t receive the same central heating we would highly recommend underfloor heating this is a fantastic space and modern feature / solution to heating your home. With underfloor heating you can have multiple options for design including wooden and stone flooring. This solution not only keeps your toes lovely and warm but heats the whole space from floor to ceiling.


How important are U-values for glass to ensure your orangery is not cold in the winter. The first thing to note is that not all glazing is tested the same for its thermal performance. Each and every door or window from our orangeries are independently tested for their U-values in there entirety. We test this to give the most accurate performance results possible for the whole product (glazing and frame).

Get in touch today

Want to find out more about our full insulated orangeries and garden rooms contact us today for a initial design consultation on 01245 326 500 or alternatively email design@westburygardenrooms.com