Installing double glazing in a 3-bedroom house in the UK typically costs between £4,500 and £9,500 based on uPVC frames, with higher prices for aluminium or timber options. Final costs depend on the number of windows, glazing type, and complexity of the installation.

What Affects the Cost of Double Glazing?

Several factors influence how much you’ll pay to double glaze a typical 3-bedroom home:

  • Frame Material: uPVC is the most budget-friendly. Aluminium and timber are more expensive but offer a premium look and better longevity.
  • Number of Windows: Most 3-bedroom homes have between 8–12 windows. More windows mean a higher total cost.
  • Glass Type: Standard double glazing is cheaper than options like triple glazing, acoustic glass, or low-emissivity coatings.
  • Installation Complexity: Bay windows, unusually shaped openings, or hard-to-reach locations may add to labour costs.
  • Access and Property Type: Flats or properties with limited access might require scaffolding, increasing the overall price.

Average Double Glazing Cost Breakdown

To give you a clearer idea, here’s a rough breakdown of double glazing costs per window based on material:

  • uPVC Windows: £350 – £500 per window
  • Aluminium Windows: £600 – £900 per window
  • Timber Windows: £800 – £1,200 per window

If your 3-bedroom house has 10 windows, you might expect:

  • uPVC total: £4,500 – £5,500
  • Aluminium total: £6,500 – £8,500
  • Timber total: £8,000 – £12,000

These estimates include installation and VAT, but every property is different — especially when it comes to size and style.

uPVC vs Aluminium vs Timber – What’s the Price Difference?

Choosing the right material has a significant impact on cost:

  • uPVC: Most affordable, low maintenance, and energy-efficient. Ideal for budget-conscious homeowners.
  • Aluminium: Sleek, modern appearance with slim frames. Higher cost but extremely durable and weather-resistant.
  • Timber: Offers a traditional, classic look. Often required in conservation areas but comes with higher cost and maintenance needs.

Each option offers different value depending on your style, budget, and long-term goals.

Are There Any Hidden Costs to Consider?

In addition to the headline installation price, there are a few extra charges you might encounter:

  • Removal of Old Windows: Some installers charge for disposal.
  • Scaffolding: Required for upper-floor or hard-to-reach windows.
  • Building Regulations or FENSA Certification: These ensure your windows meet legal standards.
  • Custom Finishes: Coloured frames, specialist hardware, or decorative glass may increase the cost.

Cristal Windows provides transparent, all-inclusive quotes with no surprise fees.

Is Double Glazing Worth the Investment?

Yes — upgrading to modern double glazing is one of the most cost-effective home improvements in the UK. Benefits include:

  • Lower energy bills due to improved insulation
  • Increased home value and kerb appeal
  • Greater comfort with reduced draughts and noise
  • Peace of mind from enhanced security features

It’s a smart investment that pays off in comfort and savings.

Get an Accurate Quote for Your Home

Every home is different, which is why we don’t offer a one-size-fits-all price. At Cristal Windows, we provide free, no-pressure quotes based on your exact needs — whether you’re replacing standard windows or planning a full-frame upgrade with custom finishes.

Ready to find out your window upgrade cost?

Get your free quote today or contact our friendly team to discuss the best options for your home and budget.