Find a Window Installer you can trust in Slough.

Choose from 90 Window Installers, all rated by people like you.

Over 106 reviews & an average rating of 4.2/5 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 Pro

Jassi Builders

2 review(s)
Offers services in SLOUGH
Hi Jassi Builders LTD here, I am a specialist in planning, designing and building control services. I make sure that I hav...
Verified Pro
All accesss solutions with over 20 years experience fast and friendly service we aim to please !!!
Verified Pro

T&Q; / MASTER HANDYMAN

0 review(s)
Offers services in SLOUGH
T&Q / Master Handyman Ltd is a reliable and experienced construction and handyman company providing high-quality services ...
Verified Pro
Zear Painting & Decoration With over 11 years of experience in painting and decoration, Zear Painting & Decoration delive...

Recent Window Installer Enquiries

02 May

Windows | uPVC

Slough - SL1

Enquiry from: Harish M

Start Date: Immediate

Customer made an online enquiry for replacement windows via one of our websites. Confirmed via . 2+ windows Supply and install Please call to arrange an appointment to quote.

Post a similar request >

18 Feb

Windows | Glazing

Slough - SL1

Enquiry from: Aini S

Start Date: Immediate

I have condensation between the glass in one of the bedroom windows.

Post a similar request >

11 Feb

Windows | uPVC

Slough - SL1

Enquiry from: Tanvi A

Start Date: Immediate

Call anytime. Number of windows: 3 Number of doors: 1 Quote requested on windows and doors, in PVCu, to be supplied and fitted.

Post a similar request >

20 Nov

Windows | uPVC

Slough - SL2

Enquiry from: Brian C

Start Date: Immediate

What best describes your living situation? - Homeowner - Sole. How many windows are you considering replacing? - --. What material do you require, UPVC? - -. What colour do you want them to be? - -. D...

Post a similar request >

06 Nov

Windows | uPVC

Slough - SL1

Enquiry from: Craig B

Start Date: Immediate

call any time. number of windows: 8 number of doors: 1 quote requested on windows and doors, in pvcu, to be supplied and fitted. are you the property owner: owner of the property what level of...

Post a similar request >

29 Sep

Building Work | Porch

Slough - SL3

Enquiry from: Suzanne N

Start Date: Immediate

Are you the home owner of that property? - -. Are you replacing an existing porch or is this a new build? - -. What material do you require, UPVC? - -. What colour do you want it to be? - -. I assume ...

Post a similar request >

23 Jul

Windows | uPVC

Slough - SL1

Enquiry from: Natalie K

Start Date: Immediate

What best describes your living situation? - Homeowner - Sole. How many windows are you considering replacing? - 1. What material do you require, UPVC? - upvc. What colour do you want them to be? - wh...

Post a similar request >

21 Jul

Windows | uPVC

Slough - SL1

Enquiry from: Nazia Y

Start Date: Immediate

Customer made an online enquiry for replacement windows via one of our websites. Confirmed via email/SMS/. 2+ windows Supply and install Please call to arrange an appointment to quote.

Post a similar request >

16 Jul

Windows | uPVC

Slough - SL1

Enquiry from: Ash T

Start Date: Immediate

Customer is looking to replace their windows. They are still considering options so please call to discuss what would be best for their home. Homeowner lives in Slough area 2+ windows Supply and insta...

Post a similar request >

13 Jul

Windows | uPVC

Slough - SL1

Enquiry from: Kalminder K

Start Date: Immediate

Customer is looking to replace their windows. They are still considering options so please call to discuss what would be best for their home. Homeowner lives in Slough area 2+ windows Supply and in...

Post a similar request >

05 Jul

Windows | uPVC

Slough - SL1

Enquiry from: Mahmood K

Start Date: Immediate

Customer living in Slough area made an enquiry for double glazing quotes via one of our websites. Customer confirmed interest via Homeowner needs advice on options 2+ windows Supply and install Pleas...

Post a similar request >

04 Jul

Windows | uPVC

Slough - SL1

Enquiry from: Rachael S

Start Date: Immediate

Customer living in Slough area made an enquiry for double glazing quotes via one of our websites. Customer confirmed interest via / SMS at 18:55 Homeowner needs advice on options 2+ windows Supply and...

Post a similar request >

03 Jul

Windows | uPVC

Slough - SL3

Enquiry from: Russel A

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 property type: semi detached how many windows do you need: 4+ windows do y...

Post a similar request >

02 Jul

Windows | uPVC

Slough - SL2

Enquiry from: Ewa K

Start Date: Immediate

Customer living in Slough area made an enquiry for double glazing quotes via one of our websites. Customer confirmed interest via / SMS at 15:25/ email at 15:25 Homeowner needs advice on options 2+ wi...

Post a similar request >

02 Jul

Windows | uPVC

Slough - SL1

Enquiry from: Chris D

Start Date: Immediate

Customer is looking to replace their windows. They are still considering options so please call to discuss what would be best for their home. Homeowner lives in Slough area 2+ windows Supply and insta...

Post a similar request >

02 Jul

Windows | uPVC

Slough - SL1

Enquiry from: Nagina S

Start Date: Immediate

Customer in Slough area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options

Post a similar request >

27 Jun

Windows | uPVC

Slough - SL1

Enquiry from: Shakil C

Start Date: Immediate

customer is looking to replace their windows. they are still considering options so please call to discuss what would be best for their home. homeowner lives in slough area 2+ windows supply and insta...

Post a similar request >

27 Jun

Windows | uPVC | Single Window

Slough - SL1

Enquiry from: Salli G

Start Date: Immediate

Wooden window repair Lead Wooden window repair Lead

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? - -. i assume you r...

Post a similar request >

25 Jun

Windows | uPVC

Slough - SL2

Enquiry from: Rupa R

Start Date: Immediate

Customer living in Slough area made an enquiry for double glazing quotes via one of our websites. Customer confirmed interest via / SMS at 16:26 Homeowner needs advice on options 2+ windows Supply and...

Post a similar request >

21 Jun

Windows | uPVC

Slough - SL1

Enquiry from: Joey C

Start Date: Immediate

Customer made an online enquiry for replacement windows via one of our websites. Confirmed via . 2+ windows Supply and install Please call to arrange an appointment 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 Slough is:

£1,795

Window Installer job Window Installer cost in 2026
Double glazing in Slough £988-£3,100
Upvc double glazing units only in Slough £575-£900
Triple glazing in Slough £988-£3,100
Aluminium windows in Slough £1,373-£2,088
Wooden window in Slough £3,750-£5,750
Aluminium windows supply only in Slough £1,600-£2,500
Upvc or wood porch in Slough £2,625-£4,025
Sash window in Slough £1,138-£3,600
Glaziers in Slough £57-£87
Secondary glazing in Slough £988-£3,100
uPVC Single Window in Slough £225-£345
Wooden sash windows in Slough £3,750-£5,750
Wooden windows supply only in Slough £2,760-£4,140
Aluminium repair in Slough £240-£360
Window repair in Slough £268-£402
Wooden window repair in Slough £320-£480

Related Window Installer searches in Slough

Window Installer FAQs

Do I need to stay at home while my windows are being replaced?

Most installers will not need you to be at home while they are fitting your windows. It is a good idea to be present though, just in case they have any questions for you and perhaps for your own peace of mind. If you cannot be there, you will need to arrange access to the property and/or agree securing the property at the end of the day.

Should I get all my windows replaced at once?

You don’t have to, especially if you’re on a budget. If you’re only replacing some, it’s a good idea to get all the windows on one side of your property replaced at the same time, so they all look the same. Be aware, obviously, huge savings could be had by having a number of windows replaced at the same time.

Can you replace just one double glazed window?

Yes, of course! It’s common for people to replace just one double glazed window. One reason that people want to replace one window is that the sealed unit inside has failed. You’ll know if this has happened because you’ll be able to see condensation on the inside of glass, which gets frustrating because you can’t wipe it away. In this case, you can choose to simply replace the sealed unit or the entire frame, which you might want to do if it’s looking past its best.

When you’re replacing just one double glazed window, if you know the brand of your current windows you could ask your installer if they can source the same ones. This will help to keep them looking as similar as possible, although if your existing windows are very old you may notice some discolouration on the exterior compared to the new one, and locks and trickle vents might look different.

Replacing just one double glazed window shouldn’t take a qualified window fitter long, and could cost as little as £400. If you want to simply replace the sealed unit, that may only cost around £250. You could try to fit a new window yourself, but it’s worth bearing in mind that all replacement windows need to be certified that they’ve been installed to meet building regulations, so you’ll need to apply to your local building control officer who will come and inspect the work then issue a certificate. If you ask an installer who is registered with a self-certification scheme (like FENSA) to fit the window for you, they can issue the certificate themselves when they’ve finished the work.

Can the glass in a double glazed window be replaced?
Yes, the glass in a double glazed window can be replaced. The glass in a window, or sealed unit to use its proper name, is not permanently attached to your window frames so if it gets damaged but your frames are still intact, there’s no need to replace the whole window. The glass in your double glazed window might need to be replaced due to:
  • Impact from a stone or other object smashing the glass in a ‘bullseye’ effect
  • The result of a break-in
  • Extreme weather or changes in pressure causing a crack
  • The sealed unit being ‘blown’, meaning that it’s no longer energy efficient due to air leaking out
A lot of window installers will replace the glass in your double glazing for you, but you might need to get quotes from specialist glaziers too. Glaziers deal purely with the glass in windows rather than installing entire frames. It won’t take a professional very long to replace the glass in your window. They will remove the beading from around the window with a pallet knife or chisel, leaving the top one until last to keep the sealed unit stable. Then, they simply lift out the glass carefully and will discuss with you whether the removal of the old sealed unit is included in their quote. Next, they will brush away any dust and debris that’s made its way into the frame and place spacers at the bottom. They will then lift the new glass into the frame, making sure it’s completely square. When they’re happy, they’ll remove the spacers and replace the beading back in reverse order. You’ll notice the replacement glass in your new window straight away as draughts should be eliminated and you’ll be able to see clearly again!
how does double glazing work?

One of the essential factors that makes a home truly a home is the convenience and comfort it provides us. As a result, we usually have a long to do list comprising things that come together to make sure our home is comfortable with ambient temperature at the very top of the scale of preference. After all, no matter how greatly designed your furniture and home decor is, it probably would amount for nothing if the temperature is either too hot or too cold. Some of the most common ways we incorporate to make the temperature a lot more conducive and warm during the winter months is by installing air conditioning system or through top notch insulation materials, but the fact still remains that a lot of heat would escape through the doors and windows. And that’s exactly the use of double glazing. So how exactly does double glazing work?

Double glazing basically works by preventing the escape of air and trapping it between two panes of glass. It’s the trapped air which serves as an insulation barrier which delivers 3 major functions. First and foremost, it stops the escape of heat through the window as the barrier created insulates the room from varying air temperatures at both sides of the glazing unit. The second major function is the double glazing works to keep down noise pollution coming from outside. While the third major function of double glazing I the fact that it helps minimize condensation which usually occurs on the single glazed windows’ inside as the cold outside air works to cool the warm air inside the house. When you install a double glazing window, the insulation barrier generated will work to stop the air temperature transmission which ultimately helps prevent the occurrence of condensation.

Why are double glazed windows better than single glazed?

Double glazed windows are better than single glazed generally because they are more energy efficient. The clue’s in the name – double glazed windows have two panes of glass while single glazed windows only have one. In double glazed windows, there is a space between the two glass panes. This space is filled with inert gas or a tight vacuum, which helps to provide an extra level of insulation. That means that heat won’t escape your home easily, nor will it creep in, so you can keep your home at a more comfortable temperature.

The extra pane of glass also helps to increase your home’s security. Single glazing is pretty easy to smash through, whereas it will take much more effort to smash double glazing and will create more noise, so burglars might be put off.

Another reason why double glazed windows are better than single glazed ones is that they help to reduce noise. Of course, if you live by a busy road you’ll still hear some traffic noise, but it can be significantly reduced buy double glazing. In the same way that the inert gas in the middle of the two panes keeps heat in and the cold out, it also helps keep noise out.

With double glazing, you’ll also notice much less condensation. With single glazing, it’s common to see condensation on the inside of the windows, especially when the heating is on. This is because the outside of the window is cold, but the inside is warm. With double glazing, the insulation between the two panes stops there being such a difference in temperature between the inside and outside of the window.

How much is a single window?
Sometimes accidents happen, and that leads to you needing to replace just a single window. Luckily, most window fitters are happy to replace just one window if you need to. But how much a single window costs will depend on a few factors. Firstly, do you need the entire window, including the frame, replaced, or just the sealed unit? If the frame is still in good condition, glaziers and some window installers can replace the sealed unit and this will set you back around £250. If your window frame is damaged, don’t try to get away with not replacing it. Having a broken window frame can let heat escape your home, increasing your energy bills, and you’re likely to hear more traffic noise. Plus, if the frame is broken you might have trouble closing the window properly, stopping you from keeping your home secure. So how much is a single window if you need the whole thing replaced? You should expect it to cost between £400-£550, but it could cost more or less than this depending on your location, the size of the window and how tricky it is to replace. There are other factors that will impact the cost of replacing a single window. Do you want the window to have plain, leaded or Georgian bar glass? Maybe it will be a casement window, or a bay, bow or sash? The cost will increase if you want more than one opener if it’s a large window, and if you want it to have locks. Also, the standard white uPVC frame colour will probably be included in the price, but if you want a woodgrain look or a different colour uPVC this will cost more.

What is the Window Energy Rating (WER)?

The energy efficiency of windows is measured using ratings, varying from A, the most efficient, to G, the least efficient. This scheme is run by the British Fenestration Council (BFRC). To comply with Building Regulations you’ll need windows of energy efficiency at least level C.

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 Slough.

Pick the right pro for you

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

Are you a Window Installer in Slough?

View our open Window Installer jobs near you

Join today
View Shortlist