Which window material is right for you – uPVC, aluminium or timber?

We all want the perfect doors and windows for our property, and when we set out to find them, we’re all faced with the same first big choice – what material do we choose? It can be a difficult decision but the team here at SEH BAC are here to help. While each option has its merits, the final decision should hinge on individual taste, your budget, and the look and character of your property.


Interior view of grey aluminium windows

With its unmistakably sleek, stylish aesthetics, aluminium’s popularity has soared in recent years – thanks in part to TV shows like Grand Designs, where it’s frequently used in striking and ambitious contemporary self-build projects.

Not only unrivalled when it comes to strength, modern aluminium windows offer excellent thermal efficiency thanks to the polyamide thermal break – a plastic barrier placed between the inner and outer aluminium frame to prevent heat escaping. Add in high-quality glass and a premium multipoint locking system, and aluminium products can deliver truly outstanding security, energy efficiency and all-round performance.

For many homeowners though, the main draw is simply the aluminium look – smart, sleek, stylish, and immediately bringing an air of high-end luxury to any property or project. Aluminium is also one of the most aesthetically versatile materials on the market, available in any RAL colour. Slim sightlines don’t just add to the striking, contemporary feel – they also offer unparalleled levels of natural light, able to brighten any room in the home and lend the whole property an airy, spacious atmosphere.

Aluminium products almost always sit at the most expensive end of the scale – but in return, you get arguably the best all-round performance, including excellent security, durability and functionality. Available in a range of styles including casement, tilt and turn and as bay windows, there’s an aluminium solution to suit any home improvement vision.


Timber and aluminium might be seen as more stylish, but when it comes to price, it’s uPVC that leads the way. Not just relatively cost-effective, but offering quicker manufacturing times and virtually no maintenance, uPVC provides a practical and durable window solution that can work well on a huge range of properties.

What’s more, at a time when more and more of us are keen to cut both our energy bills and our impact on the environment, uPVC is winning fans for its exceptional thermal performance. It excels at keeping heat in, draughts out, and interior spaces peaceful and quiet, making uPVC products a fantastic choice if you live near a busy road.

uPVC is also the most visually versatile of the options available. While hardwood and aluminium come in different colours and finishes, uPVC can be completely customised to match any homeowner taste or the style of any property.

Timber and Timber Alternative

It’s no surprise that timber is one of the most enduringly popular window materials – it was the original, and, some would say, the best. Effortlessly elegant, with a timeless, traditional aesthetic that no competitor can match, it’s just as suited as bringing a touch of vintage class to newer properties as it is to maintaining the historic character of period ones.

Understandably, homeowners with original timber windows are often eager not to lose that classic style – even when they start to fail with age. However, modern hardwood windows are a fantastic alternative – providing the ultimate combination of double or even triple-glazed energy efficiency, with all the same incomparably authentic finish.

Timber products can be an expensive option, because of their high-quality and the expert craftsmanship needed to create them – but that doesn’t mean they’re a hassle to maintain. At SEH BAC, we use fine grain hardwood that has been extensively weather-treated so it can stand the test of time, and doesn’t require the constant upkeep more traditional timber windows do. What’s more, all our wood is sourced from well-managed and sustainable forest sources.

For homeowners who want the incomparable style of timber with the even easier maintenance of modern uPVC, there’s also now an extensive range of incredibly authentic, high-performing uPVC timber alternatives on the market. At SEH BAC, we offer a slim-framed but thermally outstanding conservation range, and a choice of classic and conservation-focused sash windows.


The fantastic news for homeowners is that after decades of constant product development, all four options can offer superb security, energy efficiency, and aesthetic versatility. There is no ‘bad’ material – and that means that the best way to make a decision is to consider your budget, your tastes, and the character of your property.

If you’d still like more advice, then we are here to help. We have 17 show-centres located throughout the South East of England including in Essex, Ipswich and Milton Keynes, stocked with an extensive range of premium-quality uPVC, timber and aluminium products – so don’t hesitate to pop in or give us a call today or send us an online message.

Buying a product through SEH BAC offers you real peace of mind

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BSI ISO 9001:2015
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The Glazing Arbitration Scheme
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QA National Warranties
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