Find a Window Installer you can trust in Thornton Heath.

Choose from 107 Window Installers, all rated by people like you.

Over 267 reviews & an average rating of 4.3/5 stars, you'll find the right pro

Choose and shortlist

Use the shortlist button to select up to 4 tradespeople, enter your project details and press send

or

Keen to get on with the job?

Get up to 4 quotes from local Window Installers near you

View Shortlist
Verified ProOver 50 Reviews

Britelite Home Improvements

156 review(s)
Offers services in THORNTON HEATH
We fit high quality double glazing and the next generation triple glazing, using only the best materials. Fully guaranteed...
Verified Pro

Essex Loft Extensions

0 review(s)
Offers services in THORNTON HEATH
Essex Loft Extensions was founded by a team of experienced local builders with a shared passion for residential constructi...
Verified Pro

House of Glass

2 review(s)
Offers services in THORNTON HEATH
House of Glass ltd are a genuine, family run, home improvement company specialising in replacement windows & doors , conse...
Verified Pro

Jassi Builders

2 review(s)
Offers services in THORNTON HEATH
Hi Jassi Builders LTD here, I am a specialist in planning, designing and building control services. I make sure that I hav...
Verified Pro

Vanders scaffolding services

0 review(s)
Offers services in THORNTON HEATH
All accesss solutions with over 20 years experience fast and friendly service we aim to please !!!

Recent Window Installer Enquiries

20 Nov

Windows | uPVC | Single Window

Thornton Heath - CR7

Enquiry from: Verona B

Start Date: Immediate

are you the property owner: owner of the property other forms: building maintenance agreed to receive quotes for selected products: yes please call to appoint

Post a similar request >

20 Nov

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Verona B

Start Date: Immediate

customer made an enquiry for replacement double glazing via one of our websites. looking at various options confirmed interest 2+ windows supply and install please call to discuss options and arrange ...

Post a similar request >

17 Oct

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Antonella A

Start Date: Immediate

Call any time. Number of windows: 4 Quote requested on windows, in PVCu, to be supplied and fitted.

Post a similar request >

11 Sep

Windows | uPVC | Single Window

Thornton Heath - CR7

Enquiry from: Sandra H

Start Date: Immediate

Are you the home owner of that property? JOINT How many windows are you considering replacing? 1 DOOR What material do you require, UPVC? UNSURE What colour do you want them to be? UNSURE I assume you...

Post a similar request >

13 May

Windows | uPVC | Single Window

Thornton Heath - CR7

Enquiry from: Paul K

Start Date: Immediate

Are you the home owner of that property? yes How many windows are you considering replacing? 1 What material do you require, UPVC? upvc What colour do you want them to be? white I assume you require t...

Post a similar request >

05 Feb

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Charles I

Start Date: Immediate

are you the property owner: owner of the property what level of service do you require: supply and installation of full unit how many windows do you need: 4+ windows do you require doors: none proper...

Post a similar request >

02 Feb

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Sherene M

Start Date: Immediate

Are you the home owner of that property? yes sole How many windows are you considering replacing? 3 What material do you require, UPVC? upvc What colour do you want them to be? BLUE Do you require do...

Post a similar request >

25 Oct

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Daksha P

Start Date: Immediate

customer made an online enquiry for quotes for double glazing replacement via one of our websites. customer lives in thornton heath area and is considering a range of options for their home. confirme...

Post a similar request >

05 Oct

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Daksha P

Start Date: Immediate

customer made an online enquiry for quotes for double glazing replacement via one of our websites. customer lives in thornton heath area and is considering a range of options for their home. confirme...

Post a similar request >

21 Sep

Windows | Glazing

Thornton Heath - CR7

Enquiry from: Jennifer A

Start Date: Immediate

customer is looking to have windows installed. they are unsure what options to go for so would like to discuss directly multiple windows to be supplied and installed please call to quote. are you the...

Post a similar request >

14 May

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Alberto L

Start Date: Immediate

Sash window, white, privacy glass 1080mm wide 1200 high

Post a similar request >

12 May

Windows | uPVC | Single Window

Thornton Heath - CR7

Enquiry from: Alberto L

Start Date: Immediate

1 over 1 sash, double glazing, frosted glass, white smooth pvc, black fittings, trickle vent, sash and tilting mechanism, 1000mm wide x 1200mm high are you the property owner: owner of the property wh...

Post a similar request >

02 May

Windows | Glazing

Thornton Heath - CR7

Enquiry from: Michael S

Start Date: Immediate

Call back anytime. Type of window / door: Windows Glass replacement only: Yes Number of windows requiring repair: 2 Number of doors requiring repair: 0 Other repair required: no Quote request...

Post a similar request >

04 Mar

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Fiona E

Start Date: Immediate

Sell 1 Times Are you the home owner of that property? YES How many windows are you considering replacing? 1 What material do you require, UPVC? upvc What colour do you want them to be? unsure Do you ...

Post a similar request >

09 Jan

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Reiss W

Start Date: Immediate

Sell 1 Times Are you the home owner of that property? Yes How many windows are you considering replacing? 2 windows What material do you require, UPVC? UPVC What colour do you want them to be? White ...

Post a similar request >

07 Nov

Windows | uPVC | Single Window

Thornton Heath - CR7

Enquiry from: Deo P

Start Date: Immediate

sell 1 times are you the home owner of that property? sole homeowner how many windows are you considering replacing? 1 what material do you require, upvc? upvc what colour do you want them to be? whi...

Post a similar request >

23 Aug

Windows | Wooden

Thornton Heath - CR7

Enquiry from: Deborah B

Start Date: Immediate

customer made an online enquiry for wooden windows and confirmed on sms and email they would like a call with a window installer to discuss prices.please call to arrange an appointment to quote. are y...

Post a similar request >

05 Aug

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Achala D

Start Date: Immediate

homeowner windows upvc supplied and fitted please call to appoint

Post a similar request >

08 May

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Kathy C

Start Date: Immediate

miss requested quotes for upvc double glazing from a window installer around thornton heath. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the...

Post a similar request >

06 Mar

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Martha C

Start Date: Immediate

Customer is looking to get quotes for replacement double glazing. multiple windows Supply and install Please call to quote.

Post a similar request >

How much do Window Installer services cost?

How much do Window Installers cost? Prices for Window Installers in 2026 can differ relying on the kind of task that you require to have performed in your house. It's the inquiry we get asked a whole lot "how much do Window Installers charge?". It's generally very good to have an idea of how much a Window Installer are going to likely charge for their services. Prices will probably rise and fall based upon the products and also the tradesman selected. The table reveals the sorts of service that Window Installers typically do and also the typical cost range of these jobs. Some tasks take longer to complete than others so prices do fluctuate by task.

View our Window Installer cost guide View our Window Installer advice

The average price
of a Window Installer in Thornton Heath is:

£1,977

Window Installer job Window Installer cost in 2026
Double glazing in Thornton Heath £1,050-£3,500
Upvc double glazing units only in Thornton Heath £800-£1,200
Triple glazing in Thornton Heath £1,050-£3,500
Aluminium windows in Thornton Heath £1,338-£3,188
Wooden window in Thornton Heath £3,750-£5,750
Aluminium windows supply only in Thornton Heath £2,600-£3,900
Upvc or wood porch in Thornton Heath £2,625-£4,025
Sash window in Thornton Heath £1,200-£4,000
Glaziers in Thornton Heath £57-£87
Secondary glazing in Thornton Heath £1,050-£3,500
uPVC Single Window in Thornton Heath £225-£345
Wooden sash windows in Thornton Heath £3,750-£5,750
Wooden windows supply only in Thornton Heath £2,760-£4,140
Aluminium repair in Thornton Heath £240-£360
Window repair in Thornton Heath £268-£402
Wooden window repair in Thornton Heath £320-£480

Related Window Installer searches in Thornton Heath

Window Installer FAQs

how to fit a double glazed window?

Did you just purchase a double glazed window and confused about how to have it installed? Fitting the window yourself can be quite easy with the help of this step by step guide. However, if you lack proper training or experience, we’d recommend you reach out to a trustworthy professional who can guarantee the best results for help. That said, now let’s take a look at the process.

• Remove the old windows by detaching the old beading and glass window safely. Then make some interval cuts using a hand saw before using a crowbar to pry it out.

• Cut the external double glazed window seal. Once done, take a measurement of the window area’s width once empty. Then transfer the measurement to the window sil to face outside and cut using a handsaw.

• Seal the window sil. Add a bead of clear silicone along both inside lip as well as the centre to seal the sil.

• Screw the double glazed window to the sil. Position the window on the top of the lipped section that was siliconed. Then pre-drill them together and screw in three places. You should make sure the screws do not go totally to the sil’s bottom.

• Install the double glazed window. After successfully screwing the double glazed window to the sil, you can now fit in the double glazing. Make use of packers to make sure it’s even in the slot.

• Screw the uPVC window to the wall. If you’re happy and satisfied with the position of the window, you can then pre-drill through the frame of the window and the brick wall. Once done, simply screw it in place using masonry screws or Spax screw as they do not require crawl plugs in bricks.

• Seal around the window. To do this, simply fill any gaps with expanding foam, wipe out the excess and seal with silicone.

do you need planning permission for a porch?

There are so many benefits that comes with building a porch in your home premises. It’s an extra space where a lot can be achieved such as drying a dripping wet dog, taking off your dirty shoes or boot and lots more. So if you’re considering to construct a porch, it’s definitely going to be a wise decision. However, before you get started, there’s a need to determine if you’ll need planning permission for a porch. It’s important to take note that planning laws are dynamic and can be updated at any point, so be sure only to use trusted sources only as your guide. If you’re the homeowner or landlord, it’s entirely your responsibility to obtain the right approval for any development project you wish to carry out within your premises.

A Porch can not be termed as an extension and neither is it a conservatory, they’re basically built to the home’s front covering the main entrance using a stone base or a brick. As a result, a porch does not need planning permission due to the fact that it’s covered by the permitted development rights if the specific guidelines for porches are complied with. Below are the instances where you WILL need planning permission for a porch.

✓ If the floor space is more than 3sqm (the wall inclusive).

✓ The highest point has a height of more than 3 metres.

✓ If the porch is situated within 2 metres of a boundary directly facing on to the road.

You may need planning permission if the house is a listed building, designated area or falls under an Article 4 Direction.

In order to build a porch without planning permission, you need to consider all the criteria stated above. You can also visit the Planning Portal website to get more detailed information before getting started.

Can you repair blown double glazed windows?

You can only repair blown double glazed windows in the sense that you can replace the sealed unit (the glass part of the window) instead of having to replace the entire window.

When a double glazed window is blown, it means that the seal around the window has failed and is now letting air in and out. Often the first sign that the sealed unit has blown is condensation on the inside of the window, which is annoying since there’s no way to get rid of it! When your sealed unit has blown, you’ll be losing heat out of the window, meaning you could be spending more on your energy bills.

As a temporary fix, you could see if you can buy a misting repair kit online, but the condensation will eventually occur again as the air gets in. The best thing to do is ask a window installer or glazier to replace the sealed unit for you.

It's simple to replace the glass in a window – the specialist will remove the beading around the window, remove the blown glass from your window frame and set it to one side. They will then clean up around the frame before adding spacers in, then fitting the new sealed unit into the frame. They’ll make sure it’s a snug fit before replacing the beading back around the window to secure it.

There's no reason to put off repairing a blown double glazed window since the cost is generally much less than replacing the entire thing. A sealed unit with installation costs an average of £100, whereas a completely new window will cost around £400. You’ll soon notice that it’s less draughty and will be able see out of your window once you’ve had the blown glass replaced.

how much does double glazed windows cost?

Are you looking to replace your old window for a new double glazed window and wondering what it’s going to be the cost? Well, the double glazed windows market is a very competitive one in the UK with varying prices across the country. Therefore, if you shop around you’re most likely to find something that’ll fit your budget both products and quality wise.

As you would have expected, the more windows you required the more money you are going to spend. However, the cost per window is likely going to be lower depending on the number of windows you purchase. Several double glazed windows come with a 10 year warranty but it’s advisable to also obtain a solid workmanship warranty which provides coverage for any potential problems for a good period of time upon installation.

To determine the cost of double glazed windows, there are so many things to put into consideration that just the primary dimensions of the window itself. Other factors that works to decrease or increase the cost of the project includes the frames’ quality as well as the material used. For example hardwood can be quite high priced when compared to uPVC.

The number of opening windows within the frame can also play a huge role in the cost of the windows as well as the type of the glass. The cost of a double glazing window usually ranges between £100 to £3,200 per window, depending on the available options.

To have a more accurate estimate of the cost of a double glazing window, you’ll need a obtain a survey from a double glazing installer who can take into account any possible complications that may arise when installing your windows while also giving an advise on the most suitable window style for your property.

What is double glazing?

If a window is double glazed, it has two panes of glass that have a space between them containing argon gas. The gas works as an insulator, keeping heat inside the house as well as reducing noise. It also strengthens the window.

What happens if I have problems with my new windows?

Ultimately the double glazing company you use is responsible for the quality of work and to ensure your windows are of an excellent standard. This is why it’s important to get a warranty and use a Fensa registered installer. If problems emerge within a couple of years then it’s likely the installation was of a poor standard.Contact the double glazing company and have the issue repaired or new windows replaced. This doesn’t matter if you received a discount of free windows as part of the deal. As long as you entered into a contract the company is obliged to restore the windows.

how to repair or replace a double glazed unit?

Are you about to purchase a double glazed unit and wondering how to go about the replacement project? If yes, then you’re at the right place. Firstly, it’s advisable to hire the services of a reliable professional who can guarantee the best results for help especially if you lack proper training and experience in the field. However, we’ve put together this step by step guide to provide you with a detailed information about the double glazed unit replacement process. Let’s get started!

The tools and materials you require for the project includes tape measure, hammers, nail punch, scraper, spacing blocks, non-hardening butyl putty, high-security glazing tape rolls and beading tacks.

• Work out the glass size required. Simply use the tape measure to measure from frame edge to frame edge while also taking note of the thickness.

• When about to order, inform the glass merchant that the measurement provided are frame-tight. This will make him reduce the dimension a little bit, mostly by 5mm for clearance.

• Remove the beading and ensure to support the glass while doing so. If the glass units are fitted in wooden windows, you may need to cut the putty-based compound they’re normally sealed with to remove the glass.

• Lay out the beading in the window’s shape to make for easier refitting later on.

• If you’re working on wooden frames, wipe out all traces of excess installation compound using a scraper and clean the rebate with a soft brush.

• Trial fit the double glazed windows to ensure they’d slide into the frame without being forced.

• Plastic frame windows are usually in between a pair of gaskets, you should replace this with a hight security glazing tape. While for a wooden frame, simply apply strips of flexible non-setting butyl putty or high-security glazing tape on either sides of the glass.

• Install and centralize the glass in the frame.

• Press the nail wooden beading or plastic beading back into place.

How much money will I save with double glazing?

By replacing the single glazed windows in your home you stand to make savings of around £170 each year. It’s not just the financial gain that makes double glazing attractive though and you can also save up to 680kg of carbon emissions annually. Over 20 years this is a saving of around £3,400 and 13,600kg of CO2.

Window Installer help and advice

How it works

Tell us about your Window Installer project

Answer a few quick questions to help us match you with the right Window Installer

Get up to 4 free quotes

Receive no-obligation quotes from 4 Window Installers working in Thornton Heath.

Pick the right pro for you

Compare prices, customer reviews and services, and hire the right Window Installer.

Are you a Window Installer in Thornton Heath?

View our open Window Installer jobs near you

Join today
View Shortlist