Secure, highly efficient windows that look like timber

The best selection of bespoke uPVC sash windows in the UK, installed or supply-only within 3 weeks

uPVC sash windows fully installed from just £580 + VAT

Designed with elegance, authenticity and security in mind, you can see our installations in virtually every road in London. Easy to clean and maintain, all our windows are manufactured in the UK to meet the latest government regulations.

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Send us photos of your property, or a particular window that you would like to replace, and we’ll then provide you with an accurate quote within 48 hours – with no home visit required.
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Transform your house with our Premier uPVC sash windows and you’ll be buying the very best, with first class service before, during and after installation. Our uPVC sash windows give you outstanding looks that you won’t believe aren’t timber, all with 10 year guarantees.

Compared to standard windows, a Premier uPVC sash window is 40 per cent more efficient when it comes to heat loss and sound reduction, making it the most efficient window in the UK. You’ll also be pleased to know that our windows also have the best heat saving score of any window in Europe.

What’s included in the price?

  1. ‘A’ rated as standard
  2. Argon gas filled unit
  3. Multipoint locking
  4. Easy clean outside – from inside!
  5. Highly trained installers and surveyors

Why Premier Windows?

  • The most experienced surveyors in the business
  • Save time with our free photo quote facility
  • Our showroom in Crystal Palace lets you view and physically inspect our range of windows
  • No better selection of styles and finishes, many of our own design
  • Clear, full spec design quotes
  • Guarantee to remove and dispose of all existing windows and doors, then of minimal mess and disruption during installation
  • Every window we manufacture is made to order. With more than 200 RAL colours available, you can add the personal touch to perfectly suit your property.

More information, options and examples

Premier Windows sash windows brochure

For more information, style and colour options plus examples of our recent installations, download our latest sash windows brochure .

Did you know? Choosing uPVC is an environmentally friendly choice, as the majority of end of life uPVC windows can be recycled over and over again to produce new windows.

Answers to all your uPVC sash window questions

At Premier, we’re committed to helping our customers will all aspects of their home improvement project, including giving no obligation quotes and making the buying experience as transparent as possible. If you have any questions about your new windows, check out these FAQS.

Click on each question to reveal its drop-down answer.

What are sash window pulleys and sash cords made of?

The pulleys are made of stainless steel plated in chrome or brass, sash chords are nylon (6mm or 8mm depending on window size and sash weight).

We would like uPVC sash windows, but we don’t like the plastic look…

We can supply a timber surround for your windows which will be more in-keeping with your existing furniture and upholstery.

What are the specifications of your double glazing?

Guardian glass, 24mm overall (4-16-4) with argon gas, white spacer bar as standard, Low E softcoated, U value of 1.4.

Do your windows come with energy efficiency ratings?

All our products we supply are A and B rated and comply with all energy efficiency standards.

What happens next?

If you decide you would like to receive a quote from Premier Windows or discuss your possible installation further, you can request a free call back or arrange a no-obligation quotation by using the contact forms on this page or by calling us on 020 8683 4446 today.

Get in touch now for the UK’s most efficient windows, all with a 10 year guarantee

Our experienced team has been adding value and upgrading the windows and doors of homes throughout London and South East England for 20 years. Talk to us about triple and double glazing products and how they can help you improve your living space.

Please call 020 8683 4446, email us or use the buttons below to request a quote or make an enquiry about Premier uPVC sash windows.

For a hands-on look at our wide range of windows, doors, finishes and glazing options, come and visit our specially designed double glazing showroom in Upper Norwood.

uPVC Sash Windows - Request a quote

Contact the Premier Windows team today for a free, no-obligation quote or to discuss more about our products and services.

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    uPVC Sash Windows - Photo quote

    Send us photos of your property, or a particular window or door that you would like to replace, and we’ll then provide you with an accurate quote within 48 hours – with no home visit required. Please upload images using the form below or email the team at

      Step 1.

      Take pictures of your current windows (inside or outside). If you’d like a quote for all the windows in your home, then a picture of each side of your property is fine for us to price.

      All photos must be under 5 MB in size

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      Step 2.

      Preferred material for your new window(s) or door(s). (required)

      Step 3.

      If known, please enter the type of window(s) or door(s) you require in the box below, e.g. Casement Windows or French Doors.

      Step 4.

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      uPVC Sash Windows - Get in touch

      To find out more about our products and services, please fill out the contact form below and we’ll get back to you promptly.

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        P.s. Remember that all our uPVC range can be supplied and fitted within 3 weeks from placing your order. Your installation is speedy as well as our team removes and fits 3 to 4 windows a day.

        Say thanks to the guys for all their work so far, they were quick and professional – we love our new sash windows! Will definitely recommend you to anyone who wants their windows done. – E22 0LN
        We are so pleased with our new windows, the window fitters were very fast and efficient and did a really great job! All of our neighbours have been admiring the windows so I will certainly recommend your company to them. – Troy Road SE19
        My wife and I would like to thank you all for the great job you have done. From the initial phone call, the measuring and surveying, the installation and all the finishing touches, everything was first class. The windows and doors look superb and are top quality. – Meadow View Road, Thornton Heath

        About Premier Windows

        “The most versatile window company in London”
        With over 40 years’ experience in the home improvement industry, Premier Windows has seen many changes in the industry. We are able to offer the largest range of sash windows in the UK with early deliveries and strive to achieve a straightforward, helpful and pressure-free service to our customers.

        Over 40 years industry experience
        95% of our work comes via recommendation
        Family run, trustworthy company
        We don’t employ pushy salesmen
        Specialist timber fitters ensure a perfect fit
        Fully accredited, sustainable products