How much do uPVC windows cost?

uPVC window costs at a glance:

• uPVC window costs range from £500-£1,250 for casement windows, with bay windows reaching £4,000+ depending on style, size and specifications
• Installation costs typically add £600 per day for two installers, with London and South East prices generally higher than other regions
• Window size, glazing type, frame style and location significantly impact pricing, making each home improvement project unique in cost
• uPVC windows offer excellent value compared to other materials, being up to three times cheaper than timber whilst maintaining energy efficiency
• Advanced Glazing Systems provides comprehensive 10-year guarantees and A-rated energy efficiency with transparent pricing for Essex and London homeowners

The cost of uPVC windows depends on their size, style, finish, glazing and installation requirements. In 2026, fitted uPVC window prices can range from several hundred pounds for a standard white casement window to several thousand pounds for a large bay or bow window. This guide compares uPVC window prices by style, size and property type. It also explains what should be included in a fitted quote and what can increase the final cost in Essex and London.

If you’re considering replacement windows for your home, understanding uPVC window costs is crucial for budgeting your window replacement project effectively.

The price of uPVC windows can vary significantly based on several factors including window style, size, glazing options and installation requirements.

Generally, homeowners can expect to pay between £500-£5,000+ per window, depending on these variables, with casement windows representing the most affordable option and bow windows commanding premium prices.

This comprehensive guide breaks down everything you need to know about uPVC window costs, helping you make an informed decision for your home improvement project.

How much do uPVC windows cost?

Here’s a realistic breakdown of uPVC window costs by style, including supply and installation, according to Checkatrade data:

Window Type	Low Range	High Range	Average Cost
Casement windows	£500	£1,250	£1,000
Sliding sash windows	£600	£1,400	£1,100
Tilt and turn windows	£600	£1,400	£1,100
Flush sash windows	£700	£1,500	£1,200
Bay windows	£1,100	£4,000	£2,500
Bow windows	£1,500	£5,000+	£3,000

These window installation prices represent typical ranges for quality uPVC windows with double glazing. The significant price variations reflect differences in window size, additional features and installation complexity.

What impacts the price of uPVC windows?

Window size and style

The window size directly affects material costs and installation time.

A small bathroom window will cost considerably less than large sliding sash or bay windows.

Different window styles also impact pricing – flush casement windows typically cost slightly more than standard casement windows due to their sophisticated design and manufacturing process.

Glazing type and energy efficiency

Double pane windows are standard, but upgrading to triple glazing or specialist glass affects the price tag.

Energy-efficient windows with A-ratings, noise reduction properties or self-cleaning glass command higher prices but offer long-term benefits through reduced energy bills and minimal maintenance requirements.

Frame style and aesthetic appeal

Standard white uPVC frames are most affordable, whilst coloured frames or woodgrain effects usually increase costs.

The window opening mechanism also influences cost – tilt and turn windows are more expensive than basic casement designs, so it’s important to do your research and find the correct option for your property.

Additional features and hardware

Extra features like advanced locking systems, integral blinds or specialist hardware add to window costs.

Security features, decorative glazing bars and increased weather sealing all contribute to the final price, but provide additional value and peace of mind.

Installation complexity and location

Full frame replacement costs more than simple glass replacement.

Upper floor installations may require scaffolding, increasing labour costs.

Regional variations mean London and South East installations typically cost 15-20% more than other areas.

How much can I expect to pay for installation?

Installation costs form a significant part of your window replacement project budget.

Professional glaziers typically charge £25-£35 per hour, with day rates ranging from £250-£300 per installer, according to recent Checkatrade figures.

Most window installation projects require two installers for safety and efficiency.

You can expect to pay around £600 per day for a two-person installation team. However, location significantly impacts these costs – London and South East England command higher rates compared to other regions.

The number of windows and installation complexity affect the timeline. Simple single window replacements might take half a day, whilst full home window replacement projects can span several days depending on property size and window styles chosen.

Real AGS Projects: Why uPVC Window Quotes Vary

No two window replacement projects have exactly the same requirements. Our work across Essex and London shows how the style of the property, the existing windows, and the selected specification can all affect the final quotation based on your specific needs.

For a detached home in Brentwood, we installed Timberlook flush sash windows with a Pebble Grey exterior, Polar White interior, Georgian astragal bars and black Peardrop handles. The project also included matching uPVC French doors and energy-efficient sealed glazing units. Each of these choices formed part of the overall specification.

At an Upminster property, the work involved flush sash windows and the careful encapsulation of original stained glass, along with custom designs for enhanced aesthetics. Temporary clear glazing was fitted while the stained-glass units were restored. Specialist glass, restoration work and additional installation stages must therefore be assessed individually.

In Hornchurch, outdated aluminium sliders were replaced with uPVC vertical sliding windows featuring Georgian bars and tilt-and-clean operation. A Romford installation used flush-fit REHAU windows with a Midnight Black exterior, White interior and dummy sashes.

These projects show why general uPVC window prices can only provide an initial guide. Your quotation will reflect the number and size of the windows, the selected profile, colour, glazing, hardware, decorative features and any specialist work required.

Which uPVC window style is right for me?

Casement windows

Casement windows are the UK’s most popular choice, offering excellent value for money. These windows are hinged at the side and open outward, providing easy access for cleaning and maximum ventilation. They suit both traditional and contemporary properties.

Flush casement windows

Flush casement windows, sometimes known as flush sash windows, sit perfectly level within the frame when closed, creating clean lines and an immense aesthetic appeal. They’re perfect for period properties or homeowners seeking a premium finish. These windows cost more than standard casement windows but offer exceptional style, transforming the exterior of your property.

Sliding sash windows

Traditional sliding sash windows move vertically within the frame, perfect for Georgian and Victorian properties. Modern uPVC versions combine period authenticity with contemporary energy efficiency and minimal maintenance requirements.

Bay and bow windows

Bay windows project outward from the property, creating additional interior space and natural light. Bow windows feature curved designs for elegant architectural impact. Both styles command premium prices due to their complex manufacturing and installation requirements.

Tilt and turn windows

Popular in Europe, tilt and turn windows offer dual functionality – they tilt inward from the top for ventilation or open fully inward for cleaning and emergency egress. They’re ideal for upper floors and provide excellent security features.

Are uPVC windows cheaper than aluminium alternatives?

Yes, uPVC windows typically cost 20-30% less than aluminium windows whilst offering excellent energy efficiency and durability for most residential applications.

uPVC represents the most cost-effective window material for homeowners prioritising value. Aluminium windows offer slimmer sightlines and greater strength but come with higher price tags. However, aluminium’s longevity and low maintenance can offset initial costs over time.

For budget-conscious homeowners, uPVC provides exceptional performance at affordable prices. The material’s energy efficiency helps reduce heat loss and lower energy bills, making it an economically sound long-term investment.

uPVC windows from Advanced Glazing Systems

Advanced Glazing Systems specialises in high-specification uPVC windows across Essex and London, offering comprehensive solutions for homeowners, architects and developers. Our uPVC window range includes casement, flush casement, sliding sash, bay, tilt and turn, and heritage styles.

Every window features A-rated energy efficiency using Pilkington’s advanced 28mm double-glazed sealed units with thermal glass, Argon gas filling and Swiss warm edge spacer bars. This specification minimises heat loss whilst maximising energy savings.

Our windows are manufactured using grade 1 uPVC profile conforming to British Standards BS7412 and BS7413. Welded dividing bars provide additional strength, whilst galvanised steel reinforcement ensures structural integrity. All locks meet stringent industry requirements including BS7590 (PAS011).

Customisation options include various colours, woodgrain effects and hardware finishes to complement your property’s character. We welcome office visits where you can view our product samples including standard windows, casement windows, flush sash windows and tilt and turn examples.

Frequently asked questions: uPVC windows cost

How much do uPVC windows cost?

The cost of uPVC windows depends on the size, style, glazing, finish, installation requirements, and various glass options. Standard casement windows are generally more affordable than larger bay, bow, or sliding sash windows. A tailored quotation will provide a more accurate cost for your property.

What factors affect uPVC window prices?

Window size, style, glazing, frame colour, decorative features and hardware can all affect the price. Installation access, the condition of the existing openings and any specialist work may also influence the final quotation.

Are coloured uPVC windows more expensive than white windows?

Coloured, dual-colour and woodgrain uPVC frames may cost more than standard white frames. The difference will depend on the selected finish, window style and overall project specification.

Does the cost of uPVC windows include installation?

This depends on the quotation. Check that the price clearly states whether it includes installation, removal of the existing windows, disposal, and any making-good work, particularly in cold climates. We provide a written quotation based on the agreed specification.

How can I get an accurate uPVC window quote?

An accurate quote requires details about the number and size of the windows, preferred styles including different styles, glazing, and frame finishes. We can assess your requirements and provide a tailored, no-obligation quotation for your property.

Who are Advanced Glazing Systems?

Advanced Glazing Systems is a family-run business established in 2004 by Chairman John Barnett alongside his son Andrew and wife Julie. With over 20 years of industry experience, we formed AGS after becoming disillusioned with previous employers’ reluctance to provide complete customer satisfaction.

Our mission remains simple: provide high-specification windows, doors and conservatories at affordable prices whilst maintaining professional service from sale through installation completion. This customer-first approach has earned us  4.87 star rating spanning over 800 reviews on TrustATrader.

We hold extensive accreditations including FENSA registration, Glass & Glazing Federation membership, Which? Trusted Trader status and Secured By Design certification. These accreditations demonstrate our commitment to industry standards and customer protection.

Our comprehensive product range includes uPVC and aluminium windows, composite doors, bifold doors, conservatories, orangeries, and much more. We focus on remote quoting and professional installation, serving homeowners, architects and developers across Essex and London.

Contact Advanced Glazing Systems on 01277 230101 or email sales@advancedglazingsystems.co.uk for transparent pricing and expert advice on your window replacement project. Remember – we offer the best price upfront, building trust through honesty rather than discounts or high-pressure sales tactics.