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Aluminium vs Timber Windows – Which Is More Sustainable?

11 May 2023


At Dempsey Dyer, we supply aluminium and timber windows to the trade. Both these windows have many benefits for your customer, including thermal efficiency. This is supported by advanced double glazing which has a polyamide thermal break. Inform your customers that this retains  heat inside their home.

In this article, we will explain which windows are more thermally efficient. Read on to find out more.

How sustainable are aluminium windows?

Choosing aluminium windows could be ideal when it comes to sustainability. Aluminium is a much lighter material than timber, so less energy is required in the production process. In addition, the majority of aluminium used in manufacturing the windows can be recycled, which reduces waste. The windows are low maintenance, which only requires a simple wash and it looks as good as new.

Aluminium is supported by advanced double or triple glazed windows. These panes create a robust thermal barrier that retains natural heat inside your customers’ home. Inform your customer that this is a unique selling point because it helps naturally save money on their energy bills, which is imperative in a cost of living crisis. This is essential in the winter months when energy prices rise.

Aluminium windows are thermally efficient

Aluminium is thermally efficient, retaining heat inside your customers’ homes, saving money on energy bills. When it reaches the end of its lifespan, it can be recycled into something new. As one of the most used materials in the world, it is lightweight, sturdy, and easy to handle. This means when you transport the windows, the costs will be reduced.

Your aluminium frames are designed to resist heat loss, helping keep your home warmer in the winter and cooler in the summer. This not only helps to reduce your energy bills but can also have a positive impact on your carbon footprint.

Aluminium Does Less Damage to the Environment

Inform your customer that aluminium is ideal for the environment in comparison to timber. When new homes are built, builders are more likely to use aluminium over timber to reduce deforestation properties. Aluminium is a low maintenance material in comparison to timber, ensuring it is easy to wipe down.

Timber Windows Reduce Energy Use Naturally

The wood fibres used in timber windows  to make the frames are taken from sources, making them a more environmentally friendly option than aluminium. In addition, the natural insulating properties of wood help to reduce energy use, both in production and in your home, as timber naturally retains heat better than aluminium. When choosing timber windows, it’s important to find a product that is FSC certified, as this ensures that the timber has been sourced in a responsible manner. Inform your customer that this is an ideal choice to boost the environment.

Timber Windows Create Energy to be Used In Buildings

Inform your customer that if they use timber to create a sustainable build, then they will be able to keep heat in their home. Timber is a naturally sourced material, which reduces your customers’ carbon footprint in a building.

It is a popular material continues to be grown all over the world. The embodied energy of timber is low, ensuring it is an environmentally responsible option in comparison to more polluting alternatives. In fact, timber can be built at a faster and lower cost, making it affordable for customers who are on a budget.

Timber is a Popular Builders’ Choice

Similarly, to aluminium, timber is a lightweight material, ensuring that it is a popular choice for builders. It is a sustainable choice for the environment because it offers acoustic benefits as well. It is a strong insulator of sound, being able to cut loud noises out. As a result, let your customer know that they will enjoy a peaceful environment.


We hope that this article has helped you understand how thermally efficient aluminium and timber windows are. At Dempsey Dyer, we source windows from both materials, so ultimately the choice is up to you.

If you’re looking for a longer-term investment, with less maintenance, then aluminium windows could be the better option. However, if you’re looking for something that is more environmentally friendly, then timber windows could be a suitable choice.

If you would like to learn more about aluminium and timber windows, get in touch with our team today. We give bespoke advice that is tailored to you. Call us on 01977 649641 or fill our online contact form out to speak to our industry specialists today.




Installers and other businesses can only work effectively if they have a reliable trade supply service – offering the highest performing products. Luckily, here at Dempsey Dyer we only supply the latest options from market leaders. This guarantees quality, performance and durability – regardless of the product choice.


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