
The value of alu-clad timber windows
Aluminium-clad timber frame windows a variety of advantages over all-aluminium or all-timber windows.
Durable aluminium externally and naturally insulating timber internally combine to deliver hybrid properties which result in a thermally efficient, low maintenance and aesthetically pleasing product.
What are aluminium-clad timber frame windows?
Also known as composite or alu-clad windows, these units comprise a timber frame overlaid with a powder-coated aluminium profile externally.
Originally designed to improve the life expectancy of traditional timber windows, today’s alu-clad windows are now known to offer more than merely an improved lifespan. So what are the advantages?
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Maintenance
Unlike traditional timber windows, alu-clad windows require virtually no maintenance.
The timber is protected from the elements by the tough, powder coated aluminium, which only needs to be kept clean. This protection is indispensable, particularly for properties in coastal locations where marine grade aluminium is used.
Performance
In the thermal performance department, alu-clad windows are vastly superior toall-aluminium windows.
Wood, unlike aluminium, has a low thermal conductivity - it's around 800 times more effective as an insulator than aluminium. This makes the timber frame of an alu-clad window an excellent insulator.
Additionally, although the aluminium cladding does not contribute to thermal performance in its own right, it can allow for the use of deeper glass units, further improving the performance of the window.
For more on why we recommend triple glazing, see our 'Performance' and 'Why Triple Glazing' pages.
Sustainability
Made predominantly from timber, the manufacturing processes and waste materials of alu-clad windows are more environmentally friendly than those used for all aluminium or UPVC windows.
The sawdust produced from the production of our timber window frames, for example, is used to heat the factory.
Additionally, the improved thermal efficiency of alu-clad windows can significantly contribute to a reduction in your home’s CO2 emissions and your heating bill.
Style
When choosing new windows, you want something that will complement the design of your property and enhance its overall look.
Our alu-clad windows come in a variety of styles and are available in a range of different profiles. They can be finished in any RAL colour and in dual colours, meaning that you can opt for one colour on the inside and a completely different colour on the outside.
The aluminium provides a sleek, contemporary look externally, while the timber provides a warm, soft feel internally.
Alu-clad windows are aesthetically pleasing and allow you to enjoy versatile design features both internally and externally.
Which windows are right for you?
Take our short survey to discover the perfect windows for your project.
Best selling alu-clad windows
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Outward Opening Alu-Clad Window (P11A)
Regular price £0.01 GBPRegular priceUnit price / per -
Outward Opening Timber Window (P11T)
Regular price £0.01 GBPRegular priceUnit price / per -
Outward Opening Timber Window (P13T)
Regular price £0.01 GBPRegular priceUnit price / per -
Outward Opening Alu-Clad Window (P21A)
Regular price £0.01 GBPRegular priceUnit price / per
Inspiration for your project
From heritage transformations to scandinavian-style passive houses, discover how Norrsken windows and doors transform exceptional homes into extraordinary spaces.
Whether it's converting industrial barns into a contemporary sanctuary or pushing the boundaries of sustainable design in passive houses, our projects span every architectural vision. See how our windows and doors brought your Norrsken neighbours' visions to life.
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Your questions answered
Have a question? You’re not alone. We’ve answered some of the most common queries about Alu-clad Timber Frame Windows below.
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Are aluminium clad timber frame windows right for you?
If you are looking for windows that deliver enhanced durability, thermal efficiency and stylish aesthetics, with near zero maintenance requirements, then alu-clad windows could be the perfect choice for you.
Are triple-glazed windows right for you?
Alu-clad timber windows can be either double or triple-glazed.
Triple glazing provides homeowners a marked increase – 40-45% - in thermal performance from double-glazed alternatives, meaning greater comfort, lower heating bills, and an uplift in property value.
These windows and doors are durable, secure and aesthetically pleasing - and they're not just for Passive Houses, either.
What are alu-clad windows ?
Alu-clad timber windows are made from engineered timber clad externally in powder-coated aluminium cladding.
These windows combine the excellent insulation properties, durability and charm of timber with the low maintenance needs of aluminium. As a result, they are some of the most attractive and best quality products on the market.
Are alu-clad windows expensive?
Alu-clad windows tend to be more expensive than all timber versions and uPVC models, but offer a wider range of benefits including better thermal performance, aesthetic appeal, a longer lifespan, use of more environmentally friendly materials and lower maintenance.
They are certainly the smarter choice for a well-insulated home in the long run.
Are alu-clad windows better than Upvc ?
Alu-clad timber windows are much better at insulating - so offer better thermal performance - than most uPVC windows and have a much lower embodied carbon footprint.
They also last longer, have more aesthetic appeal and are more likely to add value to the property, although they tend to cost more. (Source: Researchgate)
Are alu-clad windows better than wood windows?
Aluminium-clad timber windows provide all the same benefits as wood windows - exceptional thermal performance, charming interior style, durability - with the extra benefit of being more weather resistant thanks to the protective layer of aluminium.
However, if traditional style is first priority then timber window frames provide a more classic look.
What are the benefits of alu-clad windows?
Aluminium clad windows are durable and provide excellent insulation thanks to the timber frames.
The aluminium cladding protects the window from weather damage and decay, ensuring a long lifespan of low-maintenance, dependable performance.
As a result, they are some of the most attractive and best quality windows on the market.
Can aluminium windows be painted ?
Our aluminium-clad windows can be finished in any RAL colour with a powder-coated finish.
Dual colour finish - different colours inside and out - is available as standard, so there is no shortage of options when choosing the colour of your windows! Internally the windows can be repainted later if desired.
Are alu-clad better than aluminium windows?
While aluminium frames are strong and light, aluminium is a very poor insulating material - over 1000 times worse than wood.
Even with multi-chambered extrusions and thermal breaks, aluminium still performs much more poorly than timber as a frame material. Aluminium also has higher environmental impacts and higher embodied carbon.
Choosing Norrsken isn't just about windows and doors; it's about choosing a partner in your building journey
At Norrsken, we supply and install the UK's finest double and triple-glazed timber alu-clad windows and doors. We take pride in exceptional craftsmanship, meticulous attention to detail, and outstanding customer service.
From initial consultation to after-sales support, we're here to ensure your complete satisfaction. So ditch the window search blues and embrace a smoother, more streamlined building experience with Norrsken by your side. Explore our stunning range of alu-clad timber windows and doors today, and discover the Norrsken difference.
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Unmistakably trusted.
The highest compliment is a recommendation. These are the voices of those who placed their trust in us.
"Excellent Company from start to finish… If only every window supplier operated like this! I have used many others over the years on various projects but Norrsken far exceeded all of them… I hope this helps you make a decision for what is probably a large chunk of your budget… They are totally worth it"
Angela Smith
Self Builder
“Having used Norrsken in the past we were happy to recommend them to one of our clients who was looking for the best sound proofing and weatherproofing they could get being set on a hill top overlooking the sea and facing strong westerly winds. They were not disappointed. A quality product, delivered well and on time. Thankyou.”
Ken Pearson
Homeowner
"Fantastic professional service, from the original design to the final installation. The triple-glazed windows and doors that have been fitted to our new house are of a very high quality and look amazing. We definitely made the right choice when we decided to use Norrsken, nothing is too much trouble for them."
Nigel
Homeowner
"I did my research before contacting Norrsken but they had come highly recommended by our Architect for our Passive House self build.
From the first meeting with Nick we felt confident that they were the Company for us."
Ali and Brian Manning
Passive House Self Builders
“The quality of the triple glazed, alu-clad windows and doors is superb. They feel so reassuringly solid ... I opted for a wood stain for the internal finish on the frames, and am so glad I did, as it shows off the beauty of the wood perfectly. The whole process from order to installation went smoothly. I thoroughly recommend Norrsken.”
Gareth
Homeowner
"Norrsken provided attentive service from drawings to on-site installation for our project at National Trust Stourhead and we would definitely recommend and repeat commission them on future projects."
Charlotte Hill-Baldwin
Architect, H-B Designs
“From our very first interaction to the aftercare support, Norrsken has been exceptional. The quality of their windows is outstanding - beautifully designed, expertly crafted, and a real standout feature in our home. They've truly elevated the overall look and feel of the house.”
Neil Southwell
Self Builder Homeowner
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