Outstanding Casement Windows

All of our windows are multi-chambered, with exceptional thermal capabilities with either triple or double-glazing options. We also offer a wide and extensive choice of colours, handle options and design styles.

Thanks to their versatile design, casement windows make a perfect addition to all styles of properties. Customers have the choice to create truly bespoke windows that perfectly complement their home. Our selection has a number of designs, colours and finishes to choose from. Create the ideal casement window for you.

Not only this, but no matter what type of casement windows you choose, your home will benefit from increased thermal performance. Casement windows have a well-insulated frame, helping retain the heat your home naturally produces and prevent cold draughts from entering.

Our casement windows in Milton Keynes and throughout Buckinghamshire can also achieve a Passive House standard and are available in a wide range of configurations. Infinite Windows has a casement window option to suit all styles of properties and budgets.

Our friendly team are always on hand to answer any questions or queries you may have. We’re dedicated to helping you find the best casement windows for your home.

The Residence Collection

Our Residence 9 range is a stunning, premium window system designed to replicate traditional timber designs in a high-quality uPVC finish. An ideal choice for homeowners looking to upgrade their traditional timber profiles, the Residence collection boasts modern-day features while keeping your properties heritage charm.

We offer a bespoke service for homeowners looking to match our uPVC casement windows to their homes existing aesthetic. Choose from our stunning range of heritage colours, with our diverse selection having something for every style of home. As well as this, customers have the option of dual colours, perfectly complementing the inside and outside of any property.

Residence casement windows are also an incredibly thermally efficient choice. Their well-insulated frames can reach U-values as low as 0.74, reaching energy ratings of A++.

When choosing from our Residence range, your new casement windows will come with:

  •  Elegant flush exterior combined with a stylish decorative interior
  • Range of heritage colours available, including dual colour options
  • Georgian bars and period ironmongery complete the look
  • Capable of achieving energy ratings of A++ and a U value of 0.74 W/m2K
  • PassivHaus standard
  • Can accommodate 28mm double glazed and 44mm triple glazed units
  • Upgrade available to PAS 24 Doc Q
  • 9 chambered design resulting in superior thermal, acoustic and security performances
  • 10-year guarantee
casement windows prices milton keynes
casement windows near me milton keynes

Flush 70

The flush 70 uPVC casement window combines modern performance with a traditional flush casement design, offering authenticity without compromise. This fantastic range is a popular choice amongst homeowners looking for an alternative to timber profiles.

uPVC is a naturally hardwearing material, and the flush 70 provides customers with state-of-the-art technology, perfect for the modern-day homeowner.

Each uPVC window we supply is tested for high levels of performance, providing homeowners with a fantastic installation that will stand the test of time. Our flush 70 selection offers:

• 70mm sculptured outer frame with flush fitting welded sashes
• Available as an “A” rated window
• Equal sightlines with Dummy Sashes
• Option for zero sightline mullion or transom
• Upgrade available to PAS 24 Doc Q
• 5 chambered outer frame
• Standard or Vintage range of handles available
• Traditional understated elegance
• Range of colours to choose from
• Dual colour available
• 10-year guarantee

Kommerling Legacy Casement Window

The Kömmerling Legacy storm casement window offers the best of both worlds with the look and feel of timber and the benefits of modern technology utilising uPVC. Their exceptionally slimline frames allow for increased natural light, helping create a bright airy living space all year round.

When choosing from this range, homeowners can enjoy:

• 70mm sculptured outer frame, ensuring a close match to a traditional timber window
• Slimline sash to maximise light
• Transoms and mullions are mechanically jointed with arris detail giving the appearance of timber joints
• “A” energy rated window
• Equal sightlines
• 5 chambered profile
• Standard or traditional range of handles available
• Tested to PAS 24
• Range of colours to choose from
• Dual colour available
• 10-year guarantee

wood effect casement windows milton keynes

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

Click the icon below to leave us a review.

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.


Casement Window Prices, Milton Keynes

Think our uPVC casement windows would make a perfect addition to your home? Get in touch today!

Customers can speak to a member of our friendly team through our online contact form. Here, we’ll be happy to answer any questions you may have about your upcoming project. You can also visit our showroom for a personal appointment to view our windows in person.

View Our Brochure

Take a look through our chosen casement windows brochure here. We have a full portfolio of brochures that you can view on our designated page, if you'd prefer to read more about the specifics of any other window.

casement windows prices milton keynes

Contact Us

* indicates required fields

Get In Touch

Contact us or Book an Appointment Today

Get in Touch
Send A Message
Call Us
Design a Door