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Verified ProOver 50 Reviews

Britelite Windows

156 review(s)
Offers services in HARROW
We fit high quality double glazing and the next generation triple glazing, using only the best materials. Fully guaranteed...
Verified ProOver 50 Reviews
Mitchell Landscaping have been established for 10 years, offering quality advice and services in landscaping, Gardening a...
Verified ProOver 50 Reviews
Crystal is a uPVC Windows and Double Glazing manufacturer and installer. We have built a strong reputation in London and t...
Verified Pro
Welcome to Haas Extension Group, where we take pride in being the premier suppliers, installers, and design consultants of...
Verified Pro

MCC Service London

0 review(s)
Offers services in HARROW
MCC Services London Ltd. is a specialist building company located in North London and covering all of London and the surro...

Recent Window Installer Enquiries

08 Jan

Windows | uPVC

Harrow - HA1

Enquiry from: Jaime B

Start Date: Immediate

What best describes your living situation? - -. Are you the home owner of that property? - -. How many windows are you considering replacing? - -. What material do you require, UPVC? - -. What colour ...

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20 Nov

Windows | uPVC

Harrow - HA2

Enquiry from: Pathmini C

Start Date: Immediate

Are you the home owner of that property? - How many windows are you considering replacing? 1 What material do you require, UPVC? - What colour do you want them to be? - Do you require doors If so how ...

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17 Sep

Windows | uPVC

Harrow - HA2

Enquiry from: Manish P

Start Date: Immediate

Are you the home owner of that property? Landlord How many windows are you considering replacing? 2 Doors What material do you require, UPVC? UPVc What colour do you want them to be? - Do you require ...

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27 Aug

Windows | uPVC

Harrow - HA2

Enquiry from: Selvarajah L

Start Date: Immediate

Are you the home owner of that property? - How many windows are you considering replacing? - What material do you require, UPVC? - What colour do you want them to be? - Do you require doors If so how ...

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27 Aug

Windows | uPVC

Harrow - HA3

Enquiry from: O K M

Start Date: Immediate

Are you the home owner of that property? Yes - Joint How many windows are you considering replacing? Employed What material do you require, UPVC? UPVC What colour do you want them to be? - Do you req...

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17 Aug

Windows | Wooden | Repair

Harrow - HA3

Enquiry from: Tony B

Start Date: Immediate

I’ve a timber window needing two casements repaired/replaced. Existing frame is sound but needs refurbed.

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16 Aug

Windows | uPVC

Harrow - HA3

Enquiry from: O K M

Start Date: Immediate

Are you the home owner of that property? Yes - Joint How many windows are you considering replacing? Employed What material do you require, UPVC? UPVC What colour do you want them to be? - Do you req...

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05 Jul

Windows | uPVC

Harrow - HA3

Enquiry from: C M

Start Date: Immediate

Are you the home owner of that property? Sole How many windows are you considering replacing? 2 What material do you require, UPVC? upvc What colour do you want them to be? - Do you require doors If ...

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03 Jul

Windows | uPVC | Single Window

Harrow - HA3

Enquiry from: Aisling W

Start Date: Immediate

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

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29 Feb

Windows | uPVC

Harrow - HA1

Enquiry from: Monit J

Start Date: Immediate

Are you the home owner of that property? yes joint How many windows are you considering replacing? employed What material do you require, UPVC? UPVC What colour do you want them to be? whitr Do you r...

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02 Feb

Windows | uPVC

Harrow - HA3

Enquiry from: Hyacinth F

Start Date: Immediate

customer in harrow areas is looking to do a couple of projects at the moment, and would like quotes for upvc double glazing.confirmed interest via email at 02/02/2024 23:47.please call to arrange appo...

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31 Jan

Windows | uPVC

Harrow - HA1

Enquiry from: Brendan A

Start Date: Immediate

Are you the home owner of that property? Yes How many windows are you considering replacing? 12 What material do you require, UPVC? UPVC What colour do you want them to be? White Do you require doors ...

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13 Dec

Windows | uPVC

Harrow - HA1

Enquiry from: Sayed A

Start Date: Immediate

owner semi detached 3+ windows upvc white color 1-3 months i am looking for quotes for 4+ windows are you the property owner: owner of the property what level of service do you require: supply and i...

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30 Oct

Windows | uPVC

Harrow - HA3

Enquiry from: Piyush S

Start Date: Immediate

*homeowner 17 windows upvc supplied and fitted please call to appoint

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30 Oct

Windows | uPVC

Harrow - HA3

Enquiry from: Piyush S

Start Date: Immediate

*homeowner 17 windows upvc supplied and fitted please call to appoint

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10 Oct

Windows | uPVC

Harrow - HA1

Enquiry from: Rachel D

Start Date: Immediate

Are you the home owner of that property? - How many windows are you considering replacing? - What material do you require, UPVC? - What colour do you want them to be? - Do you require doors If so how ...

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27 Aug

Windows | uPVC

Harrow - HA3

Enquiry from: Kandiah S

Start Date: Immediate

customer in harrow areas is looking to do a couple of projects at the moment, and would like quotes for upvc double glazing.confirmed interest via sms and email at 27/08/2023 08:12.please call to arra...

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26 Aug

Windows | Glazing

Harrow - HA3

Enquiry from: Kandiah S

Start Date: Immediate

call any time. type of window / door: blown window repair glass replacement only: yes number of windows requiring repair: 8 number of doors requiring repair: 0 other repair required: no quote...

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17 Aug

Windows | uPVC

Harrow - HA3

Enquiry from: Thevakanthan J

Start Date: Immediate

i need replace windows and front door 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...

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16 Aug

Windows | uPVC | Single Window

Harrow - HA1

Enquiry from: Monit J

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? unsure I assume you require ...

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How much do Window Installer services cost?

How much do Window Installers cost? Prices for Window Installers in 2025 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 Harrow is:

£1,795

Window Installer job Window Installer cost in 2025
Double glazing in Harrow £988-£3,100
Upvc double glazing units only in Harrow £575-£900
Triple glazing in Harrow £988-£3,100
Aluminium windows in Harrow £1,373-£2,088
Wooden window in Harrow £3,750-£5,750
Aluminium windows supply only in Harrow £1,600-£2,500
Upvc or wood porch in Harrow £2,625-£4,025
Sash window in Harrow £1,138-£3,600
Glaziers in Harrow £57-£87
Secondary glazing in Harrow £988-£3,100
uPVC Single Window in Harrow £225-£345
Wooden sash windows in Harrow £3,750-£5,750
Wooden windows supply only in Harrow £2,760-£4,140
Aluminium repair in Harrow £240-£360
Window repair in Harrow £268-£402
Wooden window repair in Harrow £320-£480

Related Window Installer searches in Harrow

Window Installer FAQs

how much are new windows?

Are you about to replace your old windows and wondering just how much it’ll cost to have a new one fitted? If yes, then you’ve come to the right place! The question is a very straight forward one, however a direct answer can not be provided as determining window prices for a replacement project can be a very tricky challenge. With a plethora of influencing factors that can play a key role in the price of both materials and labour to be used, it could be extremely hard for a window installer to provide a cost estimate without paying you a visit beforehand.

The factors that can go a long way in determining the price of your new window includes the size of the window, frame material, style chosen, your location, rates charged by the window installer (these rates can be different from an installer to an installer, so it’ll probably be in your best interest to compare quotes to identify the most competitive price) as well as the type of glass required.

Generally, for a small flat featuring four windows, the average cost for new windows would be between the range of £2,100 to £2,300. This range provided covers the cost of double glazed uPVC casement windows as well as the installation price. In the same tone, a home with up to 8 windows will have an average cost for window replacement between the range of £4,400 to £4,600, wile also taking into account the installation price. Whereas a house comprising 10 windows could begin at an average cost of window replacement between the the range of £5,200 to £5,500, and a 15 window home will be between the range of £8,400 to £8,600. it should be noted that the aforementioned figures only include the standard number of windows with a uPVC frame and the installation cost.

what is a window sash?

Windows, being a very crucial feature in every home, are one of the things you simply can’t afford to ignore in your home. Having a good understanding and solid knowledge of your windows’ components like the window sash will help you stay up to date with them and able to identify any minor mishaps early on before it leads to a much bigger problem. So what exactly is a window sash?

Well without much fuss, a window sash is simply that part of your windows that’s able to open and close. And there could as well be more than one window sash that’s operable depending on your window’s type. Window sash usually possess a very basic design as well as structure. What’s more? This section of a window happens to be a frame that’s designed in such a way to make for easy placement inside the whole window casement. You’ll discover inside the sash frame, the window glass alongside any framework possessed by your window which includes grids.

Usually, the sash is fitted into the frame of the window on a runners’ set in such a way that allows for both upward and downward movements. And finally, the window sash’s frame typically comes with a locking system which provided for extra safety and security.

The window sash is a vital feature that can determine the durability and overall performance of the windows. In the event whereby your window sash is malfunctioning, it can result to numerous problems which includes both drafts as well as leaks. As a result, it’s very important to keep your window sashes in a great working condition as failure to do so will make opening and closing your windows a really difficult task.

how long does double glazing last?

Just like every other thing in your house, your double glazed windows have an expected lifespan attached to it as it gradually becomes less functional and less efficient over time. Although there are actually top quality windows which are able to last a very long time, but the fact still remains that nothing can stand the test of time or last forever. Even the best quality double glazed windows will eventually need to be replaced at some point. So exactly how long do double glazing windows last before need a replacement?

To make it brief, most double glazing window units are typically expected to last an average of 20 years. This number of years can, however, vary within the range of 10 to 35 years based on the several factors such as the type, quality of materials as well as installation and where the windows are located.

The reason for the depreciation in double glazing windows is, over time, the windows may be subjected to some wear, tear as well as all kinds of minor damages which includes gas filled insulated glazing unit slowly and gradually leaking. According to the Centre for Sustainable Energy, the evaporation of 25 percent of gas will ultimately minimize the windows’ thermal performance. And when this occurs, fitting a secondary glazing measure or replacing the windows should be put into consideration.

Another factor leading to the gradual depreciation in double glazing windows over time has to do with condensation. When the window collects between the layers of glass due to the failure of the seal of the perimeter and the saturation of the desiccant, can only be solved by IGU replacement.

And finally, the ravages of time also has a way of taking its toll on double glazing windows. This can happen in so many ways such that the window becomes a lot less efficient and later needing to be replaced.

how much are new windows?

Are you about to replace your old windows and wondering just how much it’ll cost to have a new one fitted? If yes, then you’ve come to the right place! The question is a very straight forward one, however a direct answer can not be provided as determining window prices for a replacement project can be a very tricky challenge. With a plethora of influencing factors that can play a key role in the price of both materials and labour to be used, it could be extremely hard for a window installer to provide a cost estimate without paying you a visit beforehand.

The factors that can go a long way in determining the price of your new window includes the size of the window, frame material, style chosen, your location, rates charged by the window installer (these rates can be different from an installer to an installer, so it’ll probably be in your best interest to compare quotes to identify the most competitive price) as well as the type of glass required.

Generally, for a small flat featuring four windows, the average cost for new windows would be between the range of £2,100 to £2,300. This range provided covers the cost of double glazed uPVC casement windows as well as the installation price. In the same tone, a home with up to 8 windows will have an average cost for window replacement between the range of £4,400 to £4,600, wile also taking into account the installation price. Whereas a house comprising 10 windows could begin at an average cost of window replacement between the the range of £5,200 to £5,500, and a 15 window home will be between the range of £8,400 to £8,600. it should be noted that the aforementioned figures only include the standard number of windows with a uPVC frame and the installation cost.

What happens to my old windows?

After fitting your new windows, your installer should take away and dispose of your old windows. If you want to keep them, just let your installer know before they start work. The UPVC frames are melted down and used on the unseen parts of new windows. Aluminium frames are re-smelted and wooden are broken down and used as chipboard.

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.

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.

How long do double glazed sealed units last?
When it comes to how long double glazed sealed units (the glass inside the window) last, a lot of it is down to the quality of the glass and the environment that your windows sit in. It’s not uncommon for your window frames themselves (especially if they are uPVC) to last longer than your sealed units. Sealed units are called that because they’re two panes of glass sealed together with an air gap in between. They use what’s called a ‘perimeter seal’ to protect the air gap between the panes, and is usually made of butyl mastic which retains a desiccant within a perforated metallic spacer bar. The desiccant’s job is to absorb any moisture which finds its way into the air gap to stop your window from misting up on the inside. When a sealed unit fails, or is ‘blown’, it’s usually because moisture builds up around the seal and causes it to fail. Sealed units won’t last forever, so you will eventually end up with condensation inside the panes of your double glazing, but in an ideal environment your double glazed sealed units could last up to 30 years, with some manufacturers claiming as long as 40 years. But they do require a bit of maintenance and the position of your windows will also make a difference as to how long they last. There are a few things that determine how long a sealed unit will last:
  • Climate - If your window faces south, it will be subject to direct sunlight for a lot of the day. This tends to cause the sealed unit to fail more quickly – a south-facing window may last between 10-25 years. This is because the spacer bars will twist as the temperature rises and causes the adhesive holding them together to eventually fail.
  • Moisture - Windows in kitchens and bathrooms tend to fail more quickly because they come into contact with moisture more often. For example, if water gets on your windowsill when you shower, the seal around the glass will come loose more quickly if it’s constantly wet.
When you replace the sealed units in your windows or get completely new double glazing, make sure you choose an installer that uses quality products and will take all the steps to ensure that your sealed units are kept away from moisture as much as possible.

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