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Verified ProOver 50 Reviews

Britelite Windows

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

MCC Service London

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

Handyfox

0 review(s)
Offers services in WELWYN
If need home repairs or have a list of things to do around the house, and you are having trouble finding a skilled handyma...

Recent Window Installer Enquiries

17 Aug

Building Work | Porch

Welwyn Garden City - AL7

Enquiry from: Everjoy K

Start Date: Immediate

i would like a quote for an extension. are you the property owner: tenant (with permission) property type: terrace looking for: porch do you have planning permission: yes do you have plans drawn up: n...

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01 Mar

Windows | uPVC

Welwyn Garden City - AL7

Enquiry from: Grant H

Start Date: Immediate

Black front door price required. Double window, letter box, knocked, right hand hinge, open internally white frame and interior

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18 Oct

Windows | Glazing

Welwyn - AL6

Enquiry from: Geoffrey E

Start Date: Immediate

Sliding windows aren't currently working so looking to get repaired Call anytime Type of window / door: Window Glass replacement only: No Number of windows requiring repair: 2 Number of doors r...

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23 Aug

Windows | uPVC

Welwyn Garden City - AL7

Enquiry from: Steve M

Start Date: Immediate

Bifold window’s, 4 panel, leaded lights, brown out side, white inside, approx 230cm x 980cm

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17 Jun

Windows | Glazing

Welwyn - AL6

Enquiry from: Geoffrey E

Start Date: Immediate

Customer is having trouble opening a windows and would like it to be repaired. Call back anytime. Type of window / door: Window Glass replacement only: No Number of windows requiring repair: 1...

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08 Jan

Windows | uPVC

Welwyn Garden City - AL7

Enquiry from: Suzanne U

Start Date: Immediate

Hello, I have a problem with the sash windows in my flat & someone suggested your company. Two of the three windows don't operate particularly well. One is quite difficult to open and shut and the oth...

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09 Aug

Windows | uPVC

Welwyn Garden City - AL7

Enquiry from: Panna C

Start Date: Immediate

customer in the welwyn garden city area made an enquiry a couple of projects including upvc double glazing.call anytime and arrange an appointment to discuss. below is some details about this project:...

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26 Feb

Windows | uPVC | Single Window

Welwyn - AL6

Enquiry from: Geoffrey E

Start Date: Immediate

my house has old aluminum double glazed patio doors and windows. one window (2260x 1450 mm frame size) is now almost impossible to pull open and i understand new wheels are no longer available. what...

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13 Jan

Windows | uPVC | Single Window

Welwyn Garden City - AL7

Enquiry from: Tom S

Start Date: Immediate

i am after a upvc bi folding window, 150mm sill, 1985 x 465mm (w x h). clear glass, one opener the rest folding. many thanks are you the property owner: owner of the property what level of service do...

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16 Aug

Windows | uPVC

Welwyn - AL6

Enquiry from: Ray B

Start Date: Immediate

I am looking for bifold windows to fit 2660x1450 opening. Slimline in either aluminium or light grey coloured upvc Please let me know cost and lead time, Thanks

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09 Jun

Windows | uPVC

Welwyn - AL6

Enquiry from: Rebecca D

Start Date: Less than one month

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

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24 Apr

Windows | uPVC

Welwyn Garden City - AL7

Enquiry from: Kusam S

Start Date: Immediate

3 bedroom and 1 bathroom double glazed windows replaced how many windows do you need: 4+ windows do you require doors: none

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27 Feb

Windows | uPVC

Welwyn Garden City - AL7

Enquiry from: Katy F

Start Date: Immediate

i am looking to get quotes to have 5+ windows windows replaced are you the property owner: owner have you considered getting your windows replaced to match a new conservatory: yes how many windows are...

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01 Aug

Windows | uPVC

Welwyn - AL6

Enquiry from: Natasha C

Start Date: Immediate

are you the property owner: relative of owner do you require plumbing work: yes interested in plumbing quote: yes do you require electrical work: no would you like the windows or installed: yes agree...

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15 Jul

Windows | uPVC

Welwyn Garden City - AL7

Enquiry from: Shannon S

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.

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20 May

Windows | uPVC | Single Window

Welwyn Garden City - AL7

Enquiry from: Sergio D

Start Date: Immediate

i would like a price on a new upvc front door to be fitted thanks sergio are you the property owner: owner of the property what level of service do you require: supply and installation of full unit p...

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20 Jan

Windows | uPVC

Welwyn Garden City - AL7

Enquiry from: Jason B

Start Date: Immediate

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

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14 Jan

Windows | uPVC

Welwyn - AL6

Enquiry from: Ian D

Start Date: Immediate

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

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25 Nov

Windows | uPVC

Welwyn Garden City - AL7

Enquiry from: Lisa E

Start Date: Immediate

Customer living in Welwyn Garden City 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 ...

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24 Oct

Windows | uPVC

Welwyn Garden City - AL7

Enquiry from: Marcus S

Start Date: Immediate

Side window replacement

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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 Welwyn is:

£2,082

Window Installer job Window Installer cost in 2025
Double glazing in Welwyn £1,500-£5,000
Upvc double glazing units only in Welwyn £800-£1,200
Triple glazing in Welwyn £1,500-£5,000
Aluminium windows in Welwyn £1,875-£2,875
Wooden window in Welwyn £3,750-£5,750
Aluminium windows supply only in Welwyn £2,600-£3,900
Upvc or wood porch in Welwyn £2,625-£4,025
Sash window in Welwyn £1,800-£6,000
Glaziers in Welwyn £57-£87
Secondary glazing in Welwyn £1,500-£5,000
uPVC Single Window in Welwyn £225-£345
Wooden sash windows in Welwyn £3,750-£5,750
Wooden windows supply only in Welwyn £2,760-£4,140
Aluminium repair in Welwyn £240-£360
Window repair in Welwyn £268-£402
Wooden window repair in Welwyn £320-£480

Related Window Installer searches in Welwyn

Window Installer FAQs

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 much does one double glazed window cost?
How much one double glazed window costs is based on a few factors. If you just want to buy the window to install yourself, it will cost less than if you want an installer to fit it for you. If you want to simply buy one double glazed window without installation it could cost anywhere between £100-£300. That’s for a simple casement window, but other types like sash or tilt and turn windows could cost more. It’s recommended that you get a reputable installer to fit your double glazed windows because they’ve had the relevant training and will be able to install it much more quickly. How much it will cost for them to install one double glazed window will very based on your location, the type of window, how difficult the window is to access and whether you choose standard white uPVC or a coloured or woodgrain effect. An average uPVC casement window might cost somewhere between £300-£400, while a dual turn window might cost between £550-£660 to install. Do you really need to replace the entire window? If it’s just the double glazing that needs replacing, for example if it’s misted up inside, this will cost much less. Most window installers or a glazier will be able to just replace the sealed unit inside, and that may cost as little as £250. It’s always best to get a range of quotes from reputable companies so you know you’ve got a great price and you’re sure you’ll get excellent service.

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.

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.

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 does Aluminium double glazing work?

Double glazing is made up of two layers of glass, with a layer of argon gas in between. This type of glass can be used in Aluminium windows. The gas is a poor insulator, helping heat to stay in your home and making your windows more efficient. As well as trapping the argon gas, the second layer of glass reduces the amount of noise that enters your property, and helps to make your windows stronger and more secure.

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.

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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