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Verified ProOver 50 Reviews
We fit high quality double glazing and the next generation triple glazing, using only the best materials. Fully guaranteed...
Verified Pro

House of Glass

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

Mgr Plastering & Building

0 review(s)
Offers services in SEVENOAKS
All aspects of building work and refurbishment, using quality tradesmen. We look after 4 Churches in the area and have an ...

Recent Window Installer Enquiries

27 Sep

Windows | Glazing

Sevenoaks - TN13

Enquiry from: Sarah B

Start Date: Immediate

Customer requires repairs/replacement window opening latch. Call back anytime. Type of window / door: Window Glass replacement only: No Number of windows requiring repair: 1 Number of doors r...

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10 Jun

Windows | uPVC

Sevenoaks - TN13

Enquiry from: Sara P

Start Date: Immediate

Customer made an enquiry for replacement double glazing via one of our websites. Looking at various options Confirmed interest via phone at 17:47 2+ windows Supply and install Please call to discuss o...

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22 Nov

Windows | Wooden

Sevenoaks - TN15

Enquiry from: Andrew T

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, Wood ? - WOOD. What colour do you want them to be? - WHI...

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16 Sep

Windows | uPVC

Sevenoaks - TN15

Enquiry from: Chrissy N

Start Date: Immediate

Are you the home owner of that property? PARK Home How many windows are you considering replacing? 5 What material do you require, UPVC? UPVC What colour do you want them to be? - Do you require doors...

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29 May

Windows | uPVC

Sevenoaks - TN15

Enquiry from: Janice 28/05 1230 P

Start Date: Immediate

Are you the home owner of that property? yes How many windows are you considering replacing? 7 in a mobile home What material do you require, UPVC? upvc What colour do you want them to be? unsure Do y...

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15 Jan

Windows | uPVC

Sevenoaks - TN15

Enquiry from: Sarah S

Start Date: Immediate

One downstairs window replaced with brown upvc and a cat flat installed. Approx size 50cm wide by 120cm high

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19 Nov

Windows | Wooden

Sevenoaks - TN15

Enquiry from: Tom W

Start Date: 1 to 3 months

customer made an enquiry for wooden windows and confirmed on the quotatis site they would like quotes from a window installer.mr lives in the sevenoaks area and would like a call to discuss options.se...

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23 Aug

Windows | uPVC

Sevenoaks - TN15

Enquiry from: Vera L

Start Date: Immediate

All windows and doors replaced

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03 Aug

Windows | uPVC

Sevenoaks - TN15

Enquiry from: Emma S

Start Date: Immediate

7 windows and 2 doors. 2 bays, 3 dormers, two standard windows for a house renovation

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21 Mar

Windows | uPVC

Sevenoaks - TN14

Enquiry from: Alexandra L

Start Date: Immediate

8-11 new windows. One bay window. Others vary in size.

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03 Mar

Windows | Aluminium

Sevenoaks - TN14

Enquiry from: Jane T

Start Date: Immediate

replacement windows rear of property. can you email me a telephone number i can talk to someone about my window. are you the property owner: owner of the property what level of service do you require:...

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30 Aug

Windows | uPVC

Sevenoaks - TN14

Enquiry from: Neil P

Start Date: Immediate

Hi I am looking for two quotes. One for replacing the windows with double glazing- there are 12 (3 single, 2 small double,3 double and 4 triple casement windows). The second quote would be for a lean ...

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26 Aug

Windows | Glazing

Sevenoaks - TN14

Enquiry from: Amanda S

Start Date: Immediate

Replacement glass and replacement double glazed doors quote please ?

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25 Aug

Windows | uPVC

Sevenoaks - TN14

Enquiry from: Jessica F

Start Date: Immediate

new windows for home renovation, porch door, front door and sliding rear patio doors are you the property owner: owner of the property what level of service do you require: supply of full unit only pr...

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22 Aug

Windows | uPVC

Sevenoaks - TN13

Enquiry from: Valerie C

Start Date: Immediate

New double glazed windows to replace old metal-framed ones either side of the front door

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17 Aug

Windows | Glazing

Sevenoaks - TN13

Enquiry from: Constantine P

Start Date: Immediate

dear sirs i manage a block of flats in riverhead *** and the draught excluders of one of the front doors has come off and it either needs to be repaired or replaced. is this something you could do pl...

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10 Aug

Windows | uPVC

Sevenoaks - TN13

Enquiry from: David L

Start Date: Immediate

customer made an online enquiry for upvc double glazing and confirmed on sms they would like a call with a window installer to discuss prices.please call to arrange an appointment to quote. are you th...

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10 Aug

Windows | Wooden

Sevenoaks - TN13

Enquiry from: David L

Start Date: Immediate

customer requested quotes for wooden windows from a window installer around sevenoaks. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the infor...

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10 Aug

Windows | Glazing

Sevenoaks - TN13

Enquiry from: David L

Start Date: Immediate

conservatory window replacement (cracked)

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30 May

Windows | uPVC

Sevenoaks - TN14

Enquiry from: Chris M

Start Date: Immediate

1x composite door w/ 2 frosted glass panels 1x bay window 1x French door 3x window (150x70~) 1x window (50x20~) 1 window (70x70~)

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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 Sevenoaks is:

£2,082

Window Installer job Window Installer cost in 2026
Double glazing in Sevenoaks £1,500-£5,000
Upvc double glazing units only in Sevenoaks £800-£1,200
Triple glazing in Sevenoaks £1,500-£5,000
Aluminium windows in Sevenoaks £1,875-£2,875
Wooden window in Sevenoaks £3,750-£5,750
Aluminium windows supply only in Sevenoaks £2,600-£3,900
Upvc or wood porch in Sevenoaks £2,625-£4,025
Sash window in Sevenoaks £1,800-£6,000
Glaziers in Sevenoaks £57-£87
Secondary glazing in Sevenoaks £1,500-£5,000
uPVC Single Window in Sevenoaks £225-£345
Wooden sash windows in Sevenoaks £3,750-£5,750
Wooden windows supply only in Sevenoaks £2,760-£4,140
Aluminium repair in Sevenoaks £240-£360
Window repair in Sevenoaks £268-£402
Wooden window repair in Sevenoaks £320-£480

Related Window Installer searches in Sevenoaks

Window Installer FAQs

What are the other double glazing options?

Double glazing frames don’t just have to come in uPVC and are available in other materials including aluminium and wood too. Wooden or timber windows are more suited to properties with a traditional look and are often the frame of choice for listed buildings and homes in conservation areas. When properly maintained wooden windows can last well for years but can be up to three times more expensive than uPVC.Aluminium is the strongest and most durable option. As a metal it is highly resistant to the UK’s changing weather conditions and won’t rust, warp, crack or peel. Aluminium offers a modern appeal and is available in a range of colours.

How to measure the glass for a window replacement?
If the glass in your window has been damaged, you might only need to replace that rather than your whole window frame. Common reasons for needing to replace the glass in your window include:
  • The glass has smashed from an impact such as a stone hitting it from a lawnmower
  • You have been broken into and suspects used the window to gain entry
  • The glass has blown (lost its airtightness) from constant water build-up around the seals, which is common in bathrooms
  • Extreme weather or pressure changes have caused a crack
If your frames are still intact and there’s nothing wrong with your window’s locks or trims, there’s no reason why you can’t just replace the sealed unit in your window. To help with the quotation process, a window installer may ask you to measure the glass for your window replacement. It’s pretty simple to just measure the sealed unit inside your window. There are just 3 steps you need to take:
  1. Including the beading (the plastic and rubber seals around the windows that can be removed), measure the width of the window frame.
  2. Do the same for the height of the window, making sure you include the beading.
  3. Then, take 10mm off each measurement, and you have the approximate size of your glass.
A reputable window installer will still make their own measurements before confirming the size of the glass in your window and going ahead and ordering the replacement. Make sure you get a range of quotes from local and national installers so you can compare the price and their quotation process.
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.

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 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.
Where can I get one double glazed window?

Most window installers will be able to provide you with one double glazed window and fit it for you. If you’re replacing one double glazed window in your home, ask them to try and source the same windows that you already have or find one that’s very similar. Externally, you probably won’t be able to notice the difference, but if your existing windows are very old there may be some exterior discolouration and the locks and handles might look slightly different.

If you want one double glazed window so you can fit it yourself, there are lots of online companies that can supply you with one window. However, window fitting is a skilled trade and you might want to consider whether you have the right tools and experience to fit it yourself. Of course, you’ll save money on installation costs, but if something goes wrong, you might end up shelling out to get it fixed anyway.

The other thing to consider is that any replacement windows need to be certified that they meet Building Regulations. If you fit the double glazed window yourself, you’ll need to apply to your local council building control officer to get a certificate that confirms that you fitted the window within the regulations. You’ll have to pay a fee for this, and it will be even more expensive if Building Control say that the window hasn’t been fitted within the regulations and you have to start again.

The alternative is to ask a reputable window installer that is registered with a self-certification scheme, like FENSA, to install the window. That means that they can self-certify that the window meets building regulations once they’ve finished the installation.

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.

How much could I save on my energy bills if I install double glazing?

As well as keeping your home warmer and reducing noise, you’ll notice a saving on your energy bills from installing double glazing. If you install A++ rated windows in your home after having single glazing, you could save up to £120 year on your energy bills. The Energy Saving Trust has more information.

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