Sash windows – are aluminium or UPVC frames best?

When it comes to windows, sash windows are a classic style that has been popular for centuries. They offer a timeless look that’s both attractive and energy efficient. But when it comes to choosing the best frame material for your sash windows, there is much debate between users of aluminium and UPVC frames. In this blog post, we’ll explore both materials in detail, including their benefits, drawbacks and which one is best suited to you and your needs. We’ll also discuss how the right installation can make all the difference in terms of efficiency and aesthetic appeal.

What are sash windows?

Sash windows are a type of window typically found in older homes. They are composed of two parts – the upper sash, which contains the glass panes, and the lower sash, which is usually solid. The two sashes are connected by weights and pulleys so that they can be opened and closed.

There are a few things to consider when choosing whether to install aluminium or UPVC frames for your sash windows. First, aluminium frames are more expensive than UPVC frames. However, they offer superior durability and thermal performance. If you live in an area with severe weather conditions, aluminium frames may be the better option.

UPVC frames are less expensive than aluminium frames, but they don’t offer as much protection from the elements. UPVC is also not as strong as aluminium, so if you live in an area with high winds, UPVC frames may not be the best choice.

The benefits of aluminium sash windows

When it comes to choosing the right frame for your sash windows, there are a few things to consider. One of the most important factors is the material of the frame. The two most popular options are aluminium and UPVC. Both materials have their own advantages and disadvantages, so it’s important to choose the right one for your needs.

Aluminium sash windows are a popular choice for many homeowners due to their durability and low maintenance. Aluminium frames are also very strong, meaning they can support larger windows without problems. However, aluminium frames can be more expensive than UPVC frames and they’re not as good at insulating your home from noise and heat loss.

UPVC sash windows are a cheaper option than aluminium frames, making them a popular choice for budget-conscious homeowners. UPVC is also a good insulator, so it can help to reduce noise and heat loss in your home. However, UPVC is not as durable as aluminium and it may require more maintenance over time.

The benefits of UPVC sash windows

There are many benefits of UPVC sash windows that make them a popular choice for homeowners. UPVC sash windows are more energy efficient than their aluminium counterparts, as they are better at retaining heat. This can help to reduce your energy bills and keep your home more comfortable throughout the year. UPVC sash windows are also low maintenance and easy to clean, as they don’t require painting or staining like timber windows. UPVC is also a very strong and durable material that will stand the test of time, meaning your sash windows will last for many years to come.

How to choose the best type of sash window for your home

When it comes to choosing the best type of sash window for your home, there are a few things you need to take into account. For instance, what is the climate like in your area? If you live in an area with harsh weather conditions, then aluminium or UPVC frames might be a better option for you.

Another thing to consider is the style of your home. If you have a traditional-style home, then timber sash windows would be a more suitable option. However, if you have a modern-style home, then aluminium or UPVC frames might be a better choice.

Finally, you also need to think about your budget. Timber sash windows can be quite expensive, so if you’re on a tight budget, then aluminium or UPVC frames might be a more affordable option for you.


Sash windows can be a great way to add beauty and charm to any home, no matter what kind of frames you choose. Whether it is aluminium or UPVC frames that you decide on, both will provide excellent insulation and durability for your sash windows. Ultimately, the choice of whether to go with aluminium or UPVC frames is up to you – there are pros and cons for each option – but it’s important to make sure that whatever frame material you do choose is compatible with your window design so that it lasts as long as possible.

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