Aluminium Windows

Aluminium windows offer slim sightlines, outstanding durability, and a clean contemporary finish for homes across South London and Surrey. When you are ready to install your aluminium windows, start your free quote with Osborn's today.

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What are aluminium windows?

Our aluminium windows offer slim sightlines which are 59mm on opening windows and 36.5mm on fixed picture windows. The result is more glass, more natural light, and a clean look for improved visual appeal. Frames are thermally broken, powder-coated in a wide range of colours, while aluminium is one of the most durable, low-maintenance window materials available. We supply and install aluminium windows across South London, Surrey, and Kent.

Slim Sightlines

Our slim sightlines give homeowners improved panoramic views for a stunning visual appeal.

Wide Choice of Colours

Choose from our full range of RAL colours including anthracite grey, jet black, cream and agate grey. We also offer dual-colour options for a look that turns heads.

Thermally Efficient

Our aluminium windows feature thermally broken frames and are available double or triple glazed, achieving U-values as low as 1.1 W/(m²K) and an A+ energy rating.

Built to Last

Aluminium windows are less likely to warp, rot, or corrode, making sure they are built to last without needing to repaint or reseal them.

Aluminium Window Options

Every range comes in its own choice of colours and finishes, from smooth whites and realistic woodgrain foils to powder-coated and heritage shades. Download the brochure below to see the full palette, or ask us to bring samples to your free survey.

Smart Windows And Doors

Whether you are looking for improved warmth, noise reduction or enhanced privacy, our glazing options are designed to meet your needs, from decorative patterns to obscured glass for bathrooms and entrances.

Cassini

Chantilly

Charcoal Sticks

Contora

Digital

Everglade

Florielle

Mayflower

Oak

Pelerine

Reeded

Taffeta

Tribal

Warwick

Our Gallery

Get inspired by our previous projects in our portfolio. From casement to tilt and turn, our aluminium windows combine slim sightlines, thermal efficiency, and durability for homes across South London, Surrey, and Kent.

Designed for Modern Living

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Aluminium Window Styles & Ranges

From contemporary casements to steel-look heritage windows, our aluminium range covers every popular opening style, all built on slim, thermally broken frames powder-coated in the colour of your choice.

Casement Windows

One of the most popular aluminium styles, with side-hung, top-hung and fixed lights to suit almost any opening. Choose standard or flush casements, or a French casement that opens without a central mullion for uninterrupted views. Systems are tested to PAS 24 for security and can achieve an A window energy rating.

White aluminium sliding sash window in a yellow brick wall

Sliding Sash Windows

Aluminium vertical sliders keep the classic look of a Georgian or Victorian sash while adding modern thermally broken profiles. Slim meeting rails, optional sash horns and deep bottom rails suit period homes, and the sashes open flush with no projection in or out of the building, giving easy operation and good natural ventilation.

Aluminium tilt and turn window opened inwards onto a Juliet balcony

Tilt & Turn Windows

Two ways to open in one window. Tilt the sash inwards from the top for secure ventilation, even when it rains, or turn it fully open on its side hinge for maximum airflow and easy cleaning from inside, with no ladders needed. Restrictors can be fitted to limit the opening for homes with young children.

Heritage Aluminium Windows & Doors Installed in East Sussex

Heritage Steel-Look

Alitherm Heritage recreates the slim profiles and sightlines of traditional steel windows, making it a like-for-like replacement for Victorian and Art Deco homes, and even listed buildings. Thermally broken aluminium will not rust like old steel frames, and the system has been approved for projects in London boroughs including Islington and Camden.

Bay & Bow Windows

Three or more aluminium units combine to project from the wall and bring far more light into the room. A bay creates space to stand within the projection, while a bow forms a gentle curve of its own. Each is built to measure, with internal glazing beads so no pane can be removed from outside.

Trusted Windows, Doors, Glass & Mirrors for South London Homes

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FAQs

What are the main benefits of aluminium windows?

The biggest advantage is the slim frame. Because aluminium is so strong, the frames can be made much thinner than uPVC, meaning more glass, more light, and a cleaner look.

The powder coated finish in our aluminium windows can retain its colour for years without much upkeep. Add in a wide choice of colours and the ability to span larger openings, and it’s easy to see why aluminium has become the go-to choice for modern homes and extensions.

Are aluminium windows energy efficient?

Absolutely, and much more so than older aluminium windows. Modern aluminium frames use a thermal break, which is a layer of insulating material that sits between the inner and outer sections of the frame and helps trap natural heat, which could save on energy bills.

Alongside the high performance double or triple glazing, our aluminium windows achieve an A+ energy rating and U-values as low as 1.1 W/(m²K). They’re warm, efficient, and fully compliant with current building regulations.

What colours are aluminium windows available in?

There’s a far wider choice than with uPVC. Popular colours include Anthracite Grey, Jet Black, Agate Grey, Pure White, and Cream, plus metallic finishes like Silver and Mid Bronze.

You can also choose dual colours, ensuring the exterior complements your brickwork while the interior matches your décor. If you have something specific in mind, we can discuss bespoke RAL options during your free survey.

What guarantee comes with an aluminium window installation?

Every aluminium window installation we carry out is backed by a 10-year insurance-backed guarantee, which covers the installation and the aluminium windows themselves.

We’re also CERTASS-registered, which means your new windows are fully compliant with building regulations and you’ll receive a certificate when it’s completed.

How do I get a quote for aluminium windows?

Client Testimonials

      EXCELLENT  
   Based on 68 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Joshua Raymond 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great experience with Osborn Glass, who I have used for many years.  The windows look fantastic, and the installers were quick, courteous and incredibly neat and tidy.
  
 
      Posted on Google  
   
   Steph Still 
 
 
 
 Trustindex verifies that the original source of the review is Google. I can't recommend this company enough. They are absolutely brilliant. We had a crack in our mirrored splashback and was original told by another company that it would be a really complicated and expensive job. Found Osborn glass and they quoted 4 times less and got the job done in less than an hour! Really great communciation and would highly recommend.
  
 
      Posted on Google  
   
   Riverside Group 
 
 
 
 Trustindex verifies that the original source of the review is Google. Osborn fitted our new front door a couple of years ago and we've been really pleased with it. But what's been even more impressive is their after sales service. Nick, the installation manager, has been brilliant with following up a minor teething problem we had and with other matters. We've recommended Osborn to friends and they've also had a similar experience to us. This is a company that in our experience does not just take the money and then leave you - they follow up and provide great customer service.
  
 
      Posted on Google  
   
   Dee Ellis 
 
 
 
 Trustindex verifies that the original source of the review is Google. Glass was cut to size on the spot. I was also given samples to view with prices of different glass available.
  
 
      Posted on Google  
   
   Kathryn Hughes 
 
 
 
 Trustindex verifies that the original source of the review is Google. So glad I chose Osborn Glass.  From the first communication they were knowledgeable, helpful, good humoured and offered good value.  Will definitely use them again.  Highly recommended.
  
 
      Posted on Google  
   
   Rhona Livesey 
 
 
 
 Trustindex verifies that the original source of the review is Google. I was recommended to Osborne Glass by a friend and I was delighted with them .  Importantly I am thrilled with the quality of their work which has transformed my kitchen.  What set them apart though was the fantastic service from Tony and his team .  As well as doing a superb job they were all just so great to deal with . They would be my first choice on similar projects in the future .
  
 
      Posted on Google  
   
   Sara Negro 
 
 
 
 Trustindex verifies that the original source of the review is Google. I can't recommend this company enough! I had a complex mirror repair on a wardrobe door that was chipped, and I was really worried about it. The mirror had a triangle shape with diagonal edges, and I needed it to perfectly match the other mirrors on the door. I had reached out to other companies, but most told me the job was either impossible or would cost more than the wardrobe itself.

Tony, the manager, was incredibly helpful on the phone, reassuring me that they could do the job and match the existing mirrors perfectly. He was very responsive to emails, and I really appreciated his attention to detail. The service was top-notch from start to finish. The guys who collected and delivered the door were not only professional but also super nice and kind. They even helped me mount the door back onto the wardrobe, which was a lovely touch.

The repair was flawless, and the new mirror matches the original ones perfectly. The whole experience was seamless, and I’m beyond happy with the result. The price was very reasonable for the high-quality work provided. If you need mirror repairs, these are the guys to go to! Professional, reliable, and truly skilled. Thank you, Tony and team!
  
 
      Posted on Google  
   
   Marian Heap 
 
 
 
 Trustindex verifies that the original source of the review is Google. Just wanted to shout out to Steve and Nick at Osborn Glass who sorted out our backdoor issues this week - six years after installation - professionally and efficiently. Fantastic service, thank you!
  
 
      Posted on Google  
   
   Kenzo 
 
 
 
 Trustindex verifies that the original source of the review is Google. Unreliable -they failed to show up as arranged and have not been responsive to emails. Communication is poor.

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Areas We Cover

Based in South Norwood, we cover South London, Surrey, Kent, and Sussex. We also take on larger projects nationwide. Get in touch to confirm we cover your area.

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