The typical cost of double glazing is approximately £400-600 per window, so youâre looking at approximately £2,000 to install 4 double glazed windows in a flat, and up to and exceeding £5,000 for replacing all the windows in a standard-sized home.
| Avg. price low | Avg. price low |
|---|---|
| Avg. price | Avg. price |
| Avg. price high | Avg. price high |
£5100
£3825
£2550
£1275
£0
| Labour cost | £1,400 | |
| Material cost | £500 | |
| Waste removal | £100 |
Requests for quotations in Brighton in August 2026
Requests for Secondary glazing quotations in Brighton in August 2026. 0% change from July 2026.
Requests for Secondary glazing quotations in East Sussex in August 2026. 0% change from July 2026.
BAU UK are a complete home improvements specialists located in the South Coast, with focuses ranging from windows and doors to insulation and solar. Fully accredited, insured and trained in the latest technologies, our team can offer leading services...
Excellent Service
The Billenness family have been serving Eastbourne and the surrounding area with their glass and glazing requirements since 1889, when Joseph Billenness founded J. Billenness Ltd, the company was handed down from generation to generation until 1994 w...
Prompt response and very good sales attitude. Price was good and included all the windows. We didn't use this company ...
Very efficient and friendly service
Brighton - BN41
Enquiry from: Natasha W
Start Date: Immediate
Call anytime. Number of windows: 4 Number of doors: 1 Quote requested on windows and doors, in PVCu, to be supplied and fitted.
Brighton - BN45
Enquiry from: Robert A
Start Date: Immediate
Call any time. Number of windows: 5 Number of doors: 2 Quote requested on windows and doors, in PVCu, to be supplied and fitted.
Brighton - BN41
Enquiry from: DAIM B
Start Date: Immediate
What best describes your living situation? - Homeowner - Joint. How many windows are you considering replacing? - 1. What material do you require, UPVC? - upvc. What colour do you want them to be? - w...
Brighton - BN2
Enquiry from: Jane W
Start Date: Immediate
Call any time. Number of windows: 9 Number of doors: 2 Quote requested on windows and doors, in PVCu, to be supplied and fitted.
Brighton - BN1
Enquiry from: Barbora C
Start Date: Immediate
Call back anytime. Number of windows: 3 Number of doors: 2 Quote requested on windows and doors, in PVCu, to be supplied and fitted.
Brighton - BN42
Enquiry from: Graham N
Start Date: Immediate
Customer made an online enquiry for quotes for double glazing replacement via one of our websites. Customer lives in Brighton area and is considering a range of options for their home. 2+ windows Supp...
Brighton - BN1
Enquiry from: Süleyman K
Start Date: Immediate
Customer made an online enquiry for quotes for double glazing replacement via one of our websites. Customer lives in Brighton area and is considering a range of options for their home. Confirmed inter...
Brighton - BN1
Enquiry from: Ashley R
Start Date: Immediate
Customer made an online enquiry for quotes for double glazing replacement via one of our websites. Customer lives in Brighton area and is considering a range of options for their home. Confirmed via S...
Brighton - BN2
Enquiry from: Brian B
Start Date: Immediate
Customer made an online enquiry for replacement windows via one of our websites. Confirmed via SMS/. 2+ windows Supply and install Please call to arrange an appointment to quote.
Brighton - BN1
Enquiry from: Sangeeta K
Start Date: Immediate
Customer made an online enquiry for quotes for double glazing replacement via one of our websites. Customer lives in Brighton area and is considering a range of options for their home. 2+ windows Supp...
Brighton - BN2
Enquiry from: Louie G
Start Date: Immediate
i need a quote for upstairs windows x4 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 man...
Brighton - BN2
Enquiry from: Jannette K
Start Date: Immediate
Are you the home owner of that property? Yes How many windows are you considering replacing? 11 What material do you require, UPVC? UPVC What colour do you want them to be? White Do you require doors ...
Brighton - BN42
Enquiry from: Susan (CB 22/04/24 After 5 pm on weekdays) R
Start Date: Immediate
Are you the home owner of that property? sole How many windows are you considering replacing? 3 What material do you require, UPVC? UPVC What colour do you want them to be? white Do you require doors ...
Brighton - BN1
Enquiry from: Libby S
Start Date: Immediate
customer made an online enquiry for upvc double glazing and confirmed on sms and email they would like a call with a window installer to discuss prices.please call to arrange an appointment to quote. ...
Brighton - BN1
Enquiry from: Junko H
Start Date: Immediate
*homeowner 2+ windows upvc supplied and fitted please call to appoint
Brighton - BN1
Enquiry from: Caroline C
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 Do you require doors ...
Brighton - BN2
Enquiry from: Mat R
Start Date: Immediate
To replace double glazed glass unit
Brighton - BN2
Enquiry from: Fiona K
Start Date: Immediate
Sell 4 Times Are you the home owner of that property? yes joint How many windows are you considering replacing? 7 What material do you require, UPVC? upvc What colour do you want them to be? unsure D...
Brighton - BN1
Enquiry from: Erica M
Start Date: Immediate
Sell 1 Times Are you the home owner of that property? yes How many windows are you considering replacing? 6 What material do you require, UPVC? upvc or wood What colour do you want them to be? unsure...
Brighton - BN2
Enquiry from: Anna L
Start Date: Immediate
Sell 1 Times 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 do...
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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.
Using a Fensa registered installer isn’t compulsory but it helps to protect you from cowboys and rogue traders. It will also make life a whole lot easier in regards to Building Regulations. Replacement windows must meet a certain energy efficiency rating and once fitted you need a certificate to show your installation complies. By using a Fensa registered company they’ll issue this certificate, otherwise you’ll need the council to look at the new windows.
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.
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.
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