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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

Jassi Builders

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

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

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.

Will double glazing stop condensation?

If you’ve got a problem with condensation and don’t have double glazing, you should find that getting new windows will help. Condensation is caused by warm air meeting a cold surface which then turns into water droplets. With two panes of glass, less heat will escape from your home and keep the window warmer, meaning when steam from the bathroom or kitchen touches your windows there should be less condensation.

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 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.

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.

Are A-rated windows worthwhile?

On the grand scale of things there isn’t a huge difference between B-rated windows and A-rated windows. Consumer watchdog Which? have calculated an extra 6.5% would be saved on energy bills with A rather than B rated panes. Be aware that A rated windows are slightly more expensive, however.

What if my home isn’t suitable for double glazing?

Some properties are unable to have double glazing, especially those in conservation areas or listed buildings. To counter this problem and still benefit from a warmer home and cheaper bills, secondary glazing is an option. Secondary glazing is a second pane fitted inside your original window. Secondary glazing will still save you around £105 yearly.

Will double glazing increase my property’s value?

These days, buyers expect homes to have double glazing. People recognise the benefits of installing double glazing, so if you don’t have it installed you should consider it. You’ll increase your property’s value and give it a better chance of selling faster, since single glazed properties are also more likely to have problems with damp and mould which could put buyers off.

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