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Replacing your windows is one of the most effective ways to improve your home’s energy efficiency, appearance, and value. But one of the first questions homeowners ask is: “How much do new windows actually cost?”
In this guide, we’ll break down everything you need to know about window replacement costs in the UK in 2026—including real price ranges, what affects the cost, and how to avoid overpaying.
Average Cost of New Windows in the UK
The cost of new windows depends on several factors, but here are realistic average prices for supply and installation in 2026.
Window Material | Average Cost (Per Window) | Whole House (3-Bed Home) |
uPVC Windows | £500 – £900 | £4,000 – £7,000 |
Aluminium Windows | £800 – £1,500 | £7,000 – £12,000 |
Timber Windows | £1,200 – £2,000+ | £10,000 – £20,000+ |
What Affects the Cost of Window Replacement?
1. Window Material
This is the single biggest factor in your quote.
- uPVC: The most cost-effective and common choice.
- Aluminium: A premium, modern look with slim sightlines; more expensive than uPVC.
- Timber: The most expensive option, ideal for traditional or period properties.
2. Size and Type of Window
Steel doors are rarely “off the shelf.” Most are made to measure.
Custom elements that affect price include:
- Number of glazing panels (grid design)
- Slimline vs standard frames
- Custom dimensions
- Overpanels or side screens
The more intricate the design, the higher the cost.
3. Double vs. Triple Glazing
While double glazing is the UK standard, triple glazing typically adds 10% – 30% to the total cost. In many UK homes, triple glazing isn’t always strictly necessary unless you live in a particularly noisy or high-exposure area.
4. Installation Complexity
Your quote may increase if scaffolding is required, if access is difficult, or if significant structural work is needed to repair old frames.
5. Installation Requirements
Installation complexity also affects pricing:
- Structural alterations
- Plasterwork repairs
- Floor finishing adjustments
- Removing existing doors or walls
A straightforward installation keeps costs down, while structural changes increase labour time.
Cost Example: A Typical 3-Bed House
For a standard 3-bedroom home in the UK (averaging 8–10 windows and 1–2 doors), here is what you can expect to pay:
- uPVC: ~£5,500
- Aluminium: ~£9,000
- Timber: ~£14,000
Are New Windows Worth the Investment?
Yes, for three primary reasons:
- Lower Energy Bills: Modern frames and glass reduce heat loss significantly.
- Increased Property Value: Buyers value energy efficiency and “curb appeal.”
- Improved Comfort: You’ll notice fewer draughts and less external noise.
Common Pricing Mistakes to Avoid
- Choosing the Cheapest Quote: Low prices often signal poor installation or sub-par materials that will fail sooner.
- High-Pressure Sales Tactics: Be wary of “today only” discounts or massive price drops from an initially inflated quote.
- Not Comparing Materials: While uPVC is cheaper upfront, aluminium’s lifespan may offer better long-term value.
Pro Tip (From the Installers): Most homeowners assume triple glazing is always better. In reality, modern A-rated double glazing is sufficient for the majority of UK homes.
Window Costs in Manchester
In Manchester and across the North West, prices tend to be slightly more competitive than in London. However, given our local weather, high-quality sealing is critical to protect your home from wind and rain.
Final Thoughts
New windows are a significant investment, but one that pays off in comfort and efficiency. The key is choosing the right combination of material, style, and a reputable installer—not just the lowest price tag.
How to Get in Touch
To request a free brochure, you can call us on 0161 976 4739, use our contact form or chat with us via the chat button at the bottom right of this website. If you live locally, you can also visit our Altrincham showroom, and check our contacts page for up-to-date opening hours.
We look forward to hearing from you!