Leading supplier and fitter of new windows and double glazing in Horsham, West Sussex

As a FENSA-registered and family-run window company, Unique Windows has a wealth of experience in the supply and installation of all new windows and other top glazing products throughout Horsham, Southwater, or Newdigate. Our window installation team aims to deliver exceptional results and attentive service at all times.

Our core services include the supply and installation of double glazing and triple glazing including new and replacement windows, bifold doors, front doors, lanterns and flat roof lights. All the products that we fit come from top brands including Origin, Rehau, Aluk, and Kommerling.

Horsham is a pretty town that boasts a whole range of architectural styles from period homes and detached properties to new builds and contemporary homes. We have glazing options suitable for everyone. Whether you are looking for the latest slimline aluminium windows so you can enjoy spectacular views or you need triple glazing to insulate your property more effectively, we will supply and fit exactly what you need.

Contact our specialist team of window installers for information or advice by calling now on 020 8770 7397.

Check out all of our windows, doors and roof lanterns we install




Lanterns & Flat Glass Roofs

Bespoke uPVC windows in all styles near Southwater

Our range of quality uPVC windows is supplied and fitted near Southwater, Horsham, or Holmwood. These include casement, tilt and turn, and sash windows manufactured to your exact specification to suit your residential or commercial property and budget.

We supply and fit:

  • 070 Gold range from Kommerling: This style uses Kommerling’s lead-free Greenline technology and a slimline finish. They have a five-chambered profile for thermal efficiency and are available in 44 woodgrain and coloured finishes.
  • C70 Gold range from Kommerling: This is a chamfered system with slim sightlines and a low line grey gasket. These windows also feature lead-free uPVC profiles.
  • Total70 range from Rehau: Available in chamfered or sculptured designs, these windows suit all types of properties. They will require minimal maintenance to keep them looking good.

These windows boast all the latest, cutting edge technology that you would expect and boast excellent energy efficiency and security standards, such as multi-point locks. These advanced uPVC windows are leading the way when it comes to sustainability and are incredibly robust and long-lasting due to their steel-reinforced construction.

RH12 windows installation: Signs your windows need to be replaced

If you are thinking about window fitting in Horsham, then call the team at Unique Windows. Whether you are renovating your home and want to improve your glazing, you wish to lower your energy bills, or you want to replace your windows for another reason, our window company is perfectly placed to help you make the right choices. See our blog: How early should you start planning new glazing?

Just like most things in life, windows and glazing will age and become less efficient over time. Most double glazing should last around 20 years but many factors might affect this.

Here are some signs that it is time for new windows:

  • Your windows are letting in cold air and drafts because this is a sign that your double glazing has failed. New windows will trap warm air inside and reduce your energy bills.
  • If there is condensation on the inside of the window frame or between the panes in your double glazed window, this is a sign that the glazing has failed.
  • There is visible damage to your windows such as cracked panes or rotting window frames. This can cause all sorts of problems and will lower the value of your property.
  • If your windows become hard to open and close, then this can not only be annoying but can pose a health and safety hazard.

At Unique Windows, we offer a 10-year guarantee on all new windows as standard. Check out some examples of our projects.

Horsham window company for triple glazing: Why choose us?

Our window company near Horsham has been installing affordable and quality double glazing and triple glazing for over three decades. Our window company combines traditional customer values and a personal service with state-of-the-art products, so we can offer you the very best service. See our FAQs.

  • Free quotes, free surveys and all work guaranteed
  • All our window fitters are employed directly by us
  • Over 35 years of experience in the windows and glazing trades
  • A family-run window company with a stellar reputation
  • Windows in all styles and materials, including uPVC windows, aluminium windows and timber-alternative windows
  • All products manufactured to your exact specifications

No obligation surveys for new replacement windows in :-

  • Abinger
  • Capel
  • Dawesgreen
  • Holmwood
  • Leigh
  • Newdigate
  • Westcott
  • Wotton

Very impressed with the service provided, from the initial consultation to the final installation, everything was dealt in a very professional way.


Amazing job, I really recommend Unique Windows (London). They fitted the new doors and removed the old ones, left the place looking as it was and this was all done within a week of getting the quote, amazingly fast and reliable service with quality trades people.


We had changed all the windows in the house. They look very smart and elegant. So much that I only had praises from my neighbours and friends. Unique windows did a fantastic job at a very competitive price. Very tidy, quick and efficient. Overall, an excellent customer service. I have already recommended Unique Windows to my neighbours and friends, and I believe they have contact this company already. I will certainly use them again.


Very pleased with our new doors and windows. The fitting is excellent and Unique Windows were able to accommodate a couple of non-standard requests. Price was fair and communication clear. I would use them again in future for the remainder of the windows on our house and recommend.


Our Wonderful Reputation

For a price for replacement windows in Horsham, contact us

To request a quote for new windows for a domestic or commercial property in Horsham, get in contact with our window company. We can be reached on 020 8770 7397 or pop your details onto an online contact form and someone will get back to you.