A-rated double glazing supply and fit in Merton, SM4

At Unique Windows, we are leading suppliers of new double glazing and replacement windows in Merton, Morden, or Mitcham. Our windows are stylish, low maintenance, energy-efficient and secure.

Our made to measure windows, manufactured in uPVC, aluminium, or timber alternatives, ensure we can offer the best domestic and commercial property improvement products, tailored to your requirements.

Our family-run window company has 35 years of experience supplying and installing new windows and doors and our handpicked products come from the likes of Origin, Rehau, Kommerling, Smarts, and Aluk. These new windows excel in performance and can achieve some of the very best energy efficiency and security ratings on the market.

We draw on our vast experience to ensure that your windows are always fitted to the highest standards and are perfect for your needs. Our windows are available in a host of styles and we will work closely with you to ensure that you always get exactly what you need.

Our comprehensive range of windows includes:

  • Kommerling uPVC windows
  • Rehau uPVC windows
  • Aluminium windows designed by Origin, ALUK, and Smart
  • Roseview sliding sash windows
  • Timber alternatives including Rehau Rio, Timberlook, and The Residence Collection

We also supply and fit a complete range of doors and roof lanterns. Please see our brochures for more details.

To arrange a free quote and survey, please call now on 020 8770 7397.

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




Lanterns & Flat Glass Roofs

Are you searching for classic uPVC windows near Morden?

Instantly recognisable, uPVC windows exude charm that is sure to be a fantastic addition to any property in Morden, Merton, or Wimbledon? High-performance, our uPVC windows include Kommerling’s 070 Gold and C70 ranges and the Total70 range from Rehau.

Our made-to-measure windows are available in all styles, including:

  • Sash windows: You can bring traditional charm and a style that has been loved for generations to your home with our sash windows, which offer all the advances that you would expect with modern windows.
  • Tilt and turn windows: This multifunctional window design means that you can improve your ventilation options. These windows are ideal for properties of all aesthetics from traditional to contemporary.
  • Bay and Bow windows: These windows make an impressive addition to any home or commercial property and are designed to complement the aesthetic of your home.
  • Casement windows: A smart option, casement windows are the most popular window style and will ensure your home is warm, secure, and stylish.

Our windows are available in a range of colours with hardware options to suit all designs.

Make energy savings with our SM4 window installations

Our energy-efficient windows in Merton include both double glazing and triple glazing. Installing new or replacement windows will reduce your energy bills and lower your carbon footprint.

Our new windows are at the forefront of the latest glazing technology so you can benefit from all the recent advances that this type of glazing will bring. The window’s U Value is the measurement to show how well your window can retain heat. The lower the U Value, the lower the amount of heat lost. All our windows have low U Values.

  • Energy-efficient glazing will reduce heat loss through windows and doors, so you can enjoy more comfortable temperatures all year round
  • Energy-efficient windows and doors will also reduce noise pollution, so you can enjoy a more peaceful environment inside your home
  • New windows will stop the build-up of condensation or moisture on the inside of your windows

For some examples of our work, please see recent projects.

Aluminium replacement windows in Merton

Alongside all uPVC products, we can supply and fit new slimline aluminium windows in Merton from leading brands. These windows offer a cutting-edge alternative to uPVC and their slimline style continues to grow in popularity.

We accompany all our new windows, new doors, and new roof lanterns with guarantees for your peace of mind. All our window fitters work directly for us, so they provide a professional, efficient, and reliable service.

For more information, please see our FAQs.

No obligation surveys for new replacement windows in :-

  • Hackbridge
  • Mitcham
  • Raynes Park
  • Streatham
  • Wimbledon

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

Start your new windows project in Merton now

Would you like more information about our new windows or replacement windows in Merton? Please call our window company now on 020 8770 7397 or pop your details onto an online contact form now.