Premium Grade Aluminium Windows

Aluminium windows can be finished in any choice of RAL colour of choice, including dual colour and have various handle options.

With many window configurations to choose from, we are here to help design and plan everything with you, so that you not only achieve the correct look and feel, but also, practical solutions for your every-day living needs.

With every aluminium window made-to-measure and bespoke to your property, there is so much that can be achieved and our showroom in Milton Keynes has everything here for you to try, so you can really explore the possibilities with us.

We work with industry-leading suppliers Cortizo and Origin to source our fantastic selection of aluminium windows. By working with trusted suppliers, it allows us to monitor the quality of our products. This ensures that we’re always providing premium grade products for our customers.

Please feel free to contact us and make an appointment, where a member of our expert team will be happy to answer any questions you may have.

We look forward to hearing from you.

Cortizo Aluminium Windows

We offer two different types of aluminium windows from Cortizo.

The Cortizo COR 70 Casement is a contemporary casement window fabricated from high grade thermally broken aluminium. Homeowners can enjoy a number of functional benefits when having this aluminium window installed in their home.

  • Modern, contemporary styling with square line sashes
  • Wide range of RAL colours available, including stock colours for reduced lead times
  • Slimline and heavy duty sashes available to accommodate different size windows
  • Tested to security standard PAS 24:2016
  • Sound reduction of up to 45dB
  • Can accommodate 28mm double glazed and 44mm triple glazed units
  • U values as low as 1.1 W/m2K with triple glazing
  • Wide range of glazing specifications including the option for integral blinds
  • Choice of ironmongery
  • 10-year guarantee
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aluminium windows prices milton keynes

Cortizo Hidden Sash

Alternatively, we offer the Cortizo Hidden Sash window system. This aluminium window is a stunning, sleek and innovative tilt and turns window, fabricated from high grade thermally broken aluminium. This profile offers a number of advanced features, such as:

  • Contemporary square line system
  • Wide range of RAL colours available
  • High-security multi-point locking
  • Uniform appearance as fixed lights and openers look identical from the outside
  • Generous size limitations
  • Inward opening tilt and turn system
  • Can accommodate 28mm double glazed and 40mm triple glazed units
  • Wide range of glazing specifications including the option for integral blinds
  • Choice of ironmongery including concealed handle option
  • 10 year guarantee

Origin OW70

The Origin OW70 is a slimline all aluminium casement window, designed to maximise glazing and light. This includes benefits such as:

  • Strong and sleek with ultra-slim sightlines
  • PAS 24:2016 certified, high-quality locking system
  • External flush casement design
  • U values ranging from 1.2 W/m2K to 1.50 W/m2K
  • Wide range of handle options
  • Multiple configurations to suit all property types and requirements
  • Wide range of RAL colours available, including stock colours for industry-leading lead times
  • Dual colour option available
  • Wide range of glazing specifications including the option for integral blinds
  • 20 year guarantee
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origin aluminium windows milton keynes

Origin OW80

The Origin OW80 is a premium all aluminium flush casement window, manufactured in the UK to exacting standards. This frame offers:

  • Internal and external flush casement window fabricated from premium grade aluminium
  • Wide range of RAL colours available, including stock colours for super quick lead times
  • Dual colour options available
  • PAS 24 certified, high quality locking system
  • Thermally efficient – can achieve an A++ rating with Aerogel technology & triple glazing
  • U values ranging from 0.9 W/m2K to 1.5 W/m2K
  • Can accommodate 28mm double glazed units and 44mm triple glazed units
  • Wide range of handle options
  • Wide range of glazing specifications including the option for integral blinds
  • Multiple configurations to suit all property types and requirements
  • 20-year guarantee

What Do Our Customers Say?

Excellent and prompt service from Infinite Windows & Doors when we opted to use them to provide our bifold doors. The builder who is building our extension failed to sort them through his “usual” window company so we cast out on our own and found Infinite. I’m very glad we did. The doors arrived earlier than expected, and were fitted in the course of an afternoon. They look fabulous and will look even better when the rest of the extension build is completed!

S. Thomas

Amazing knowledge from the salesperson, great clarity of documentation, customer service, installation and quality of products. Highly recommend. So refreshing to deal with a professional, approachable Company who practice integrity.

W. Rust

From start to finish we have been impressed by the professionalism and enthusiasm of the team at Infinite Windows & Doors Ltd. Their price was competitive. They worked quickly, neatly and efficiently and the standard of finish was excellent. Everyone was polite and friendly and we can highly recommend them.

E. Chua

Colin, Jamie and Jackie are a great team and a joy to work with. I introduce all my clients to them, knowing they will receive one to one attention throughout the whole process. They know their products inside out from pricing, technically to fitting on site. They work with the Architect throughout the process, providing CAD details. They work to ensure that the process is as simple and efficient as possible.

R. Luckett

Great new bi-fold door and especially great service from all the team at Infinite. We are very happy customers!

C. Aworth

I can not recommend Infinite Windows highly enough, Colin and Jamie go the extra mile with customer care. Our new windows have transformed the house.

N. Smith

5 star service from start to finish. All queries and concerns were dealt with efficiently and the final result for our new home is absolutely flawless. We highly recommend Infinite Windows & Doors as they are true professionals unlike some of the cowboys we have dealt with in the past. Thank you again.

C. Colucci

Excellent company all round. The service we received from Colin and Jacky was 2nd to none from start to finish. They have a super showroom in Milton Keynes and they displayed such a genuine interest in our project accompanied too, by their ample product knowledge which helped assist with our designs

We can thoroughly recommend them.

S. Hickman

Outstanding customer service! The response to any concerns or queries is almost immediate making us feel like we are their most important customers (I’m sure they make all customers feel this way). Doors are amazing – can’t wait for the summer 🙂 Thanks Colin and team.

L. Canavan

Amazing service, Thanks Colin.

M. Cahill

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Our Trusted Partners

Infinite Windows understand that good quality brands are vitally important, and that we ourselves would only install products in our own homes, from such suppliers that always meet the very best manufacturing standards in the industry.


We reassure you that for this reason, we work with only the most reputable suppliers who always deliver us the very best quality, service and fabrication techniques. From the most eye-catching visuals to the most leading thermal efficiencies, we never compromise with our new build or our renovation solutions.


Aluminium Window Prices, Milton Keynes

Think our selection of aluminium windows would make the perfect addition to your home? Get in touch today!

Customers can speak directly to a member of our friendly team through the online contact form. Here, we’ll be happy to answer any questions you may have and discuss our full range of options.

We look forward to hearing from you!

View Our Brochure

Take a look through our chosen aluminium windows brochure here. You can discover the technical specifics that make these windows so impressive. If you'd prefer to explore our full range of brochures, including those covering windows made from other materials. visit our dedicated brochures page today.

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