How are aluminium windows installed?

Aluminium window installation involves: - Removing old frames (if replacing) - Preparing the opening - Fitting and securing the new aluminium frame - Sealing for insulation (usually using silicone or polyurethane) - Finishing internally and externally [Hire a professional aluminium window installer](https://www.checkatrade.com) and they’ll sure you get a airtight fitting that’s compliant with [Building Regulations](https://www.checkatrade.com/blog/expert-advice/building-regulations/).

How long does aluminium window installation take?

Most standard window replacements take a **few hours per window**. A full property installation may take one to three days depending on the size and complexity.

Do aluminium windows reduce condensation?

Modern aluminium windows use thermal break technology and energy-efficient glazing to minimise condensation. Proper ventilation also plays an important role. **Tip:** Our [how to stop condensation on windows guide](https://www.checkatrade.com/blog/expert-advice/how-to-stop-condensation-on-windows/) has lots more tips and solutions.

Should I replace 20-year-old double glazing?

If your windows are draughty, misted or inefficient, upgrading to modern aluminium double glazing can improve insulation, security and kerb appeal. Get a local aluminium window installer to take a look. They can advise on whether [window repair or replacement](https://www.checkatrade.com/blog/expert-advice/repair-or-replace-windows/) is best.

Do aluminium windows add value to a property?

Yes. High-quality, energy-efficient windows can make your home more attractive to buyers, particularly in modern or renovated properties.

Is hiring a professional aluminium window installer worth it?

Because windows affect insulation, security and structural integrity, professional installation is essential. An experienced aluminium window installer will: - Make sure it’s compliant with UK Building Regulations - Provide FENSA or equivalent certification where required - Deliver airtight fitting and proper sealing - Offer workmanship guarantees

How to find skilled tradespeople for aluminium windows installation in [location]?

To help you find checked and reviewed tradespeople for aluminium windows installation in [location], consider these tips: - Read online reviews to determine their reputation and quality of work - Verify their public liability insurance, so you know they’re covered against any potential accidents or damages - [Get multiple quotes](https://www.checkatrade.com/post-a-job) from at least three tradespeople so you can compare prices and services - Use Checkatrade and **hire one of our approved members that have undergone up to 12 checks** so that you can hire with confidence

Aluminium Windows Installation in KT21 (38)

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UNIQUE GLAZING INSTALLATIONS LONDON LTD
9.94
(113 reviews)
Operates in KT21
Services & skills
Windows / Doors / Conservatories
Aluminium Windows Installation
Triple Glazing Installation
Secondary Glazing
Bifold Doors Installation
Call
CLEARVIEW GLAZING SERVICES LLP
9.94
(33 reviews)
Operates in KT21
Services & skills
Windows / Doors / Conservatories
Aluminium Windows Installation
Triple Glazing Repair
Dog Flaps
Bay Windows Installation
Call
The Door & Window Shop Ltd
9.46
(414 reviews)
Operates in KT21
Services & skills
Windows / Doors / Conservatories
Aluminium Windows Installation
Wooden Sash Windows Installation
Conservatory Roof Insulation
Patio Doors Installation
Call
Ewell Window Company
9.89
(1276 reviews)
Operates in KT21
Services & skills
Windows / Doors / Conservatories
Aluminium Windows Installation
Secondary Glazing
Glass Replacement
Triple Glazing Installation
Call
BG and M limited
9.74
(130 reviews)
Operates in KT21
Services & skills
Windows / Doors / Conservatories
Aluminium Windows Installation
Bifold Doors Installation
Timber / Wooden Doors Repair
Window Fitters
Call
Window Express (Bromley) Limited
9.67
(905 reviews)
Operates in KT21
Services & skills
Windows / Doors / Conservatories
Aluminium Windows Installation
Aluminium Doors Installation
Window Fitters
Loft Windows Installation
Call
Ethinex Ltd
9.91
(19 reviews)
Operates in KT21
Services & skills
Windows / Doors / Conservatories
Aluminium Windows Installation
Conservatory Repairs
Window Film
Composite Front Doors Repair
Call
The Elite Glazing Co Ltd
10.00
(709 reviews)
Operates in KT21
Services & skills
Windows / Doors / Conservatories
Aluminium Windows Installation
UPVC Doors Installation
Cat Flaps
Roof Windows Installation
Call
Miall & Barnes Limited
9.85
(80 reviews)
Operates in KT21
Services & skills
Windows / Doors / Conservatories
Aluminium Windows Installation
Triple Glazing Installation
French Doors Repair
Windows and Doors
Call
B
Banstead Glass & Glazing Services Ltd
10.00
(406 reviews)
Operates in KT21
Services & skills
Windows / Doors / Conservatories
Aluminium Windows Installation
Double Glazing Repair
Window Fitters
Porch Installation
Call
D C Glass & Glazing
9.92
(459 reviews)
Operates in KT21
Services & skills
Windows / Doors / Conservatories
Aluminium Windows Installation
Cat Flaps
Misted Double Glazing
UPVC Doors Repair
Call
London Fire door & Glazing
9.84
(17 reviews)
Operates in KT21
Services & skills
Windows / Doors / Conservatories
Aluminium Windows Installation
Emergency Windows / Doors / Conservatories Service
Aluminium Doors Installation
Windows and Doors
Call

Find Aluminium Windows Installation in KT21

Looking to upgrade your home with aluminium windows installation to replace old double glazing or fit windows in a new extension?

Read on for everything you need to know about finding and hiring professionals for aluminium windows installation covering KT21.

Rather we do the searching for you? Try our quick request a quote feature and we’ll put you in touch with aluminium window installers in your local area.

How much does aluminium windows installation cost in KT21?

Expect to pay between £4764 and £11039 , with an average cost of £7250.

That said, larger properties or bespoke designs will cost more.

For accurate pricing, it’s best to get at least three quotes from local aluminium window installers.

Tip: Find out more about prices in our aluminium windows cost guide.

Are aluminium windows better than uPVC?

Whether aluminium windows are better than uPVC depends on your priorities:

Aluminium offers slimmer frames, a modern look and exceptional durability
uPVC is usually cheaper and still provide strong insulation

Aluminium is often chosen for contemporary homes or large glazed areas, while uPVC suits tighter budgets.

Are aluminium windows more expensive than uPVC?

Aluminium windows generally cost more upfront than uPVC due to material strength, manufacturing processes and aesthetics.

However, aluminium frames are long-lasting and low maintenance, which can make them cost-effective over time.

Tip: Our cost of aluminium windows vs uPVC guide helps you weigh up the pros, cons and prices of both.

What are the disadvantages of aluminium windows?

While aluminium windows are strong and stylish, potential downsides include:

Higher initial cost
Can feel colder to the touch (although modern thermal breaks reduce heat loss)
Fewer budget options compared to uPVC

That said, choosing high-quality windows helps improve energy efficiency, which could save you money in the long run.

What is the lifespan of aluminium windows?

Aluminium windows are extremely durable and can last 30–45 years or more when properly installed and maintained.

They resist warping, rust and weather damage, making them well suited to UK conditions.

Why use Checkatrade?

Fully checked installers covering your local area
Insurance always listed
Easy to compare multiple profiles
Handy reviews from local customers
Covered by the Checkatrade Guarantee (T&Cs apply)

Looking for more tradespeople in KT21?

Find Checkatrade reviewed Tradespeople, get a quote today, discover related services in KT21 and check out our latest home improvement guides.

Aluminium Windows Installation in KT21 (38)

Search results

Describe your job

Describe your job

UNIQUE GLAZING INSTALLATIONS LONDON LTD

Services & skills

CLEARVIEW GLAZING SERVICES LLP

Services & skills

The Door & Window Shop Ltd

Services & skills

Ewell Window Company

Services & skills

BG and M limited

Services & skills

Window Express (Bromley) Limited

Services & skills

Ethinex Ltd

Services & skills

The Elite Glazing Co Ltd

Services & skills

Miall & Barnes Limited

Services & skills

Banstead Glass & Glazing Services Ltd

Services & skills

D C Glass & Glazing

Services & skills

London Fire door & Glazing

Services & skills

Find Aluminium Windows Installation in KT21

How much does aluminium windows installation cost in KT21?

Are aluminium windows better than uPVC?

Are aluminium windows more expensive than uPVC?

What are the disadvantages of aluminium windows?

What is the lifespan of aluminium windows?

Why use Checkatrade?

Looking for more tradespeople in KT21?