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uPVC Window Installation Cost Guide (Supply & Fitting) 

A comprehensive guide on uPVC window installation costs and pricing, helping you understand the key factors for your new double/triple glazing windows.

bay window red brick house

Last updated: June 5, 2026

  • Table of contents
  • This article will break down the cost of fitting your home with new uPVC windows. The average price for the supply and installation of windows in most homes typically ranges between £600 and £1,300 per window. With a variation of around £700 per window, it’s easy to see why there are so many factors to take into account.

    This is also why you will most likely require an appointment with a trained professional to go through all the configuration options for your new windows—there is a lot to consider. Having supplied and fitted uPVC windows in Scottish homes for over 16 years, we understand how important it is to achieve the right fit for your property. After all, good quality uPVC windows will last you 10–15 years, and they will also have an impact on your property value.

    Calculating the cost of your windows

    We have build a uPVC window cost calculator that will take you through a short questionnaire providing you with a quick guide price for new windows in under 30 seconds. The calculated price will be for a like-for-like replacement and not constitute a formal quote.

    anthracite casement windows closeup

    Consideration that affect the cost of your new windows

    It’s important to have a clear idea of what you’re looking for before you start shopping for uPVC windows. Take some time to consider your priorities—are you simply looking for the most cost-effective option, or do you want higher-quality windows from a reputable installer?

    You should also think about your preferred style and finish. For example, would you like a specific colour, or are you considering decorative glass designs? It may also be worth exploring the option of adding a new uPVC or composite front door at the same time, as this can sometimes offer better overall value.

    Finally, consider factors such as security and energy efficiency, and be sure to discuss these preferences with the window specialist during your home consultation.

    The cheapest uPVC windows available

    The cheapest windows you can technically choose (although most homeowners would not opt for this) are small fixed windows with no openings. However, this option is not suitable for most homes.

    After that, your best chance of achieving a low-cost uPVC window replacement would be a like-for-like white uPVC casement window with standard glazing (no additional security or insulation upgrades). If you would like a price for this option, you can take a photo of each window, measure the openings, and send us a WhatsApp message with this information.

    The main cost-factors when replacing uPVC Windows

    1. Like-for-like replacement – You will typically achieve the most cost-effective price when replacing your windows with the same type and size.
    2. Window size – Larger windows require more materials, manufacturing time, transport, and installation work, which increases the overall cost.
    3. Window type – Casement windows are generally the most affordable option, while mid-range tilt & turn windows and higher-priced sash windows offer additional features and styling.
    4. Glazing specification – Performance glass upgrades, such as toughened or acoustic glazing, will increase the overall price.
    5. Security and hardware – Enhanced security features, upgraded locks, and premium hardware options will affect cost.
    6. Opening sections – Windows with additional opening sections require more hardware and manufacturing complexity, increasing the price.
    7. Frame colour and finish – Standard white uPVC is the most cost-effective option, while coloured or dual-finish frames increase the overall cost.
    8. Additional upgrades – Extras such as trickle vents, decorative glass, or integrated blinds can impact the final price.
    9. External building work – Any structural alterations, brickwork, render repairs, or cill replacements will be priced separately where required.
    10. Internal finishing and decoration – Additional finishing work such as plastering, trims, or painting is not always included in standard installation costs.
    11. Access requirements – Difficult access, upper floors, or the need for scaffolding or lifting equipment may increase installation costs.
    12. Guarantees and installation quality – Longer guarantees, accredited installers, and higher-quality workmanship can influence the overall price but add long-term value.
    brown upvc casement window on bugalow

    What’s Typically Included in a Standard Quote? 

    A base-level quote usually includes: 

    • Supply and installation of standard uPVC window 
    • Energy-efficient double glazing 
    • Standard white uPVC finish (inside and outside) 
    • Basic secure hardware 
    • Internal white PVC trims and cills 
    • 10-year installation guarantee 

    Anything beyond this—larger units, special shapes, decorative glazing, internal joinery, scaffolding—will be itemised separately.  

    What Should You Budget for New Windows? 

    If you’re budgeting for a full house of new uPVC windows: 

    • Smaller homes (5-6 windows): £3,500 – £7,500 
    • Medium homes (8-10 windows): £5,500 – £12,500 
    • Larger homes or custom installations: £9,000+ 

    When choosing a uPVC window company, always check for warranties, industry accreditations, and confirm who will be carrying out the installation—these details matter. 

    If you’re planning your budget, explore our uPVC Window Finance Options, or simply request a quote and ask our team about the finance plans available. 

    white casement windows on red brick house

    Get Your personalised uPVC Window Quote! 

    At Clyde Windows & Construction, we have been manufacturing and fitting uPVC windows for Scottish homes for over 16 Years. All work is carried out by our own in-house fitting teams and we also manufacture (Eurocell profile) uPVC windows in our factory near Glasgow.

    Message, call or email us today to get a free, no-obligation quote for your new windows.

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