What Are Thermally Broken Aluminium Windows and Doors?

All of our aluminium windows are thermally broken to ensure maximum thermal efficiency
When you are looking to upgrade your home with new windows and doors and are considering aluminium ones, it’s important to ensure that they are thermally broken. They can improve the overall energy efficiency of your property, keeping your home warm all year round whilst reducing your energy bills. But what are thermally broken aluminium windows and doors? And what are the benefits of having them? In this blog post, we will answer just that.
What is a thermal break?
In simple terms, a thermal break is insulation found within the frame of a window and door. The thermal break is placed within a gap in the structure of the window, in between the inside and outside frames. The most efficient material used is a polyamide plastic or fabric. Steel has often been used in the past due to its poor conduction of heat, however, the thermal conductivity of polyamide is 160 times better than steel.
The result of a thermal break being placed during the manufacturing stage of windows and doors is considerably important. Although the name; ‘thermally broken’ might suggest otherwise!
Why is a thermal break needed?
Aluminium doors and windows have been used in commercial properties for many years due to their robust nature and longevity. They offer slimmer frames which can support larger panes of glass than uPVC, perfect for shop windows, offices and various other commercial buildings. Whilst aluminium boasts several positives it does come with a downfall, it’s a highly conductive material. As a result, aluminium doors and windows are prone to losing heat, easily get cold and increase problems with condensation. Making aluminium a less suitable material choice for residential homes. Or at least that was the case.
Thermally broken aluminium windows and doors use a modern technology where a gap is made between the frames components, joined together using a less conductive material. What does this mean? In practice, this will create a barrier between the cold air outside and the warm air inside. This results in excellent window insulation and tackles the problem with aluminium’s high conductance. When aluminium windows and doors are not thermally broken they will become very hot during the summer and very cold during the winter season.
What does this mean for your home?

Thermally broken aluminium windows and doors will reduce your carbon footprint, helping protect the environment from climate change.
Thermally broken aluminium windows and doors provide exceptional thermal performance, reducing your energy bills whilst keeping your home well insulated all year round. However, this is not the only benefit to thermally broken aluminium windows and doors. Beside their thermal efficiency, they will also:
- Reduce condensation – A thermal breaker will minimise how much heat is lost from inside and how much cold is allowed through from the outside. Reducing coldspots and condensation forming.
- Reduce your carbon footprint – In a world where climate change is a very real problem, thermally broken aluminium windows and doors will help you use less energy.
Discover our full range of thermally broken aluminium windows and doors
Here at Majestic Designs, we offer a varied style of aluminium windows and doors which are fully customisable, helping you find the perfect match for your home. If you would like to visit our showroom or speak to a member of our team to discuss your installation possibilities, contact us today.