Casement Windows Buckinghamshire

Welcome to Castle Glass

We are home improvement installers and bespoke glass cutting experts based in Chalfont St. Giles. We install high quality windows and doors across Chesham, Amersham, Prestwood, Holmer Green, Buckinghamshire and the surrounding areas. Contact us today for double glazing prices.

Castle Glass Chalfont St. Giles

Our Products


Castle Glass installs a range of high performance uPVC windows, with styles for every taste. Whether you live in a modern build or some more traditional, we have something for you. Choose from casement, flush fitting, tilt and turn, Residence, timber and aluminium windows, among others.


Whether it’s a front door or a back door, our range of external options has you covered. With uPVC, timber and aluminium options, and styles including composites, stables and bifolds, we have something for you. Open your home better with a stunning new front or back door from Castle Glass.


For homeowners looking to make more significant renovations, we install a range of bespoke conservatories, orangeries and house extensions across Buckinghamshire. What’s more, our roof systems can even be retrofitted onto an existing extension you may already have fitted.


Looking to improve the standard of weatherproofing your home offers? We offer a roofline replacement service here at Castle Glass. This means you can have your fascias, soffits, guttering or cladding replaced to improve the performance of your home. It’s an essential modern renovation.

Why Choose Castle Glass?

When you choose Castle Glass over a national or local competitor, you’ll receive an exemplary standard of customer service, with high quality products to match. As a registered installer of some of the industry’s top windows and doors, we take pride in installing better home improvements than our local competitors, while delivering a much more personal service than a national installer.

You get the best of both worlds with Castle Glass and have no reason to go anywhere else if you’re local to Chalfont St. Giles or Buckinghamshire.

Bespoke Glazing Specialists

What helps us to stand out from the crowd is our unique in-house glazing services. Castle Glass started as a company that manufactured seal units and we still supply and fit these high quality systems today. We cater to all your glazing needs, accepting almost every project and bringing our decades of expertise to every fitting. Our sealed units are available with lead applied in a Georgian or diamond design, meaning there's options for everyone. You can commission our glazing services for the following:

  • Secondary glazing fitting, to improve an existing profile's thermal efficiency
  • Integral blind installation (blinds fitted between two sheets of glass)
  • Bespoke glass cutting and replacement

Our Suppliers

Over 30 Years in the Business

We’ve been in this industry since the 1980s, allowing us to bring decades of experience to every installation. With this, be bring heightened product knowledge and industry knowhow to every window, door and conservatory fitting we installation we complete.

With this, you can expect more efficient installations, completed in a professional manner. This allows your normal life to resume sooner, while also minimising stress from the entire process. What’s more, we’ll take a duty of care to remove all waste, leaving your property as clean as we found it.

What’s more, we take pride in using our experience to ensure that we are only working with the industry’s best suppliers. As you’ll see from the list above, we’ve chosen some of the most reputable names, without compromise. This makes sure that your home improvements are of the highest possible quality.


“We are delighted with the finished product. My mother was very stressed about the installation beforehand but was absolutely delighted with the professional, speed and good service.”

Vivienne Dignum -

“Thank you Castle Glass, the windows look great, we’re really pleased. You’ve lived up to your high reputation!”

Rose Taunt -

“Thank you so much for the glass. It is absolutely perfect and I’m really pleased with it. Everyone at Castle Glass has been so so extremely helpful. We will definitely be using you again and will not hesitate to recommend you to any friends in the area.”

Stephen Smith -

“I just wanted to say thank you very much for the super service the other week. I was very impressed that you came out the same for my smashed windows and returned the same day to mend it for me. What service!”

Sheryn Ross -

“I would like to thank everyone at Castle Glass. It was a pleasure dealing with all of you – in the office, on quotation and from both of your installers. Good service, good products, good installation. We will use you again!”

Mike Bateman -

“We just wanted to say thank you for a great job and professional service. we are more than happy to recommend Castle Glass to everyone.”

Jo Leach -

Contact Us

Speak to a member of our team if you want to get an estimated price for any of our products. It's completely free to get a quote from us, and there's no hard selling our end. We can guide you through the installations process, explaining every step. Leave your details on our form and we'll get back to you as soon as possible.

* indicates required fields

Latest News