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 |
£2900
£2175
£1450
£725
£0
| Labour cost | £1,400 | |
| Material cost | £500 | |
| Waste removal | £100 |
Requests for quotations in Westminster in May 2025
Requests for Secondary glazing quotations in Westminster in May 2025. 0% change from April 2025.
Requests for Secondary glazing quotations in London County in May 2025. 0% change from April 2025.
We fit high quality double glazing and the next generation triple glazing, using only the best materials. Fully guaranteed for 10 years, Britelite products will save you money by reducing your energy consumption and require little to no maintenance a...
Not a very structured approach to how to make contact, do the consultation, timeline of providing the cost and then foll...
Crystal is a uPVC Windows and Double Glazing manufacturer and installer. We have built a strong reputation in London and the South East for great value and exceptional service in the design, production and installation of quality uPVC Windows, Doors,...
online reviews scared me
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
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Suppliers and installers of quality upvc windows and doors, aluminium windows and doors, bi folds, rooflights, lanterns and more right across Cheam, Sutton, London and Surrey. Call today for a quote
good but not competative
We at Primary Windows & Doors with our 25 years experience in the industry feel our unique operation where we design, survey & install all ranges of products such as windows, doors roofline and conservatories is second to none. Our installations a...
Excellent from initial call to installation Price was very competative & more importantly the service & craftsmanship...
Royale Glazing Installations Ltd is a Double Glazing company in West London which has over 30 years of experience within the Double Glazing Industry, with our own self contained Factory in Feltham Middlesex were we specialises in the manufacture ...
excellent
Had to phone several times to try to catch me in. Salesperson came this morning (10th March). Sensible, factual, clea...
Creative Windows & Doors | windows and doors surrey - Creative windows and doors supplier
very competative
Waiting on measurements
London - W3
Enquiry from: Chris B
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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.
London - W14
Enquiry from: Greta J
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Customer is looking to replace their windows. They are still considering options so please call to discuss what would be best for their home. Homeowner lives in London area 2+ windows Supply and insta...
London - SW8
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Customer in London area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options
London - W8
Enquiry from: Charles H
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Customer is looking to replace their windows. They are still considering options so please call to discuss what would be best for their home. Homeowner lives in London area 2+ windows Supply and insta...
London - SW17
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Customer in London area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options
London - SW6
Enquiry from: Pat M
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Customer is looking to have new windows installed. They are unsure of options so would like to discuss. Confirmed interest via Customer lives in London area 2+ windows Supply and install Please call ...
London - SW19
Enquiry from: Joanna S
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Customer is looking to replace their windows. They are still considering options so please call to discuss what would be best for their home. Homeowner lives in London area 2+ windows Supply and insta...
London - SW18
Enquiry from: Marissa M
Start Date: Immediate
customer in london 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 14/06/2025 00:24.please call to arra...
London - W14
Enquiry from: Alec N
Start Date: Immediate
Customer made an enquiry for replacement double glazing via one of our websites. Looking at various options Confirmed interest, SMS at 20:44, email at 20:44 2+ windows Supply and install Please call t...
London - NW9
Enquiry from: Dhanji P
Start Date: Immediate
Call anytime. Number of windows: 5 Number of doors: 2 Quote requested on windows and doors, in PVCu, to be supplied and fitted.
London - W4
Enquiry from: Christine M
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Customer in London area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options
London - SW4
Enquiry from: Jane P
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Customer living in London 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 install Pleas...
London - SW9
Enquiry from: Chloe N
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Customer made an enquiry for replacement double glazing via one of our websites. Looking at various options Confirmed interest 2+ windows Supply and install Please call to discuss options and arrange ...
London - SW12
Enquiry from: Amy B
Start Date: Immediate
Customer made an enquiry for replacement double glazing via one of our websites. Looking at various options Confirmed interest 2+ windows Supply and install Please call to discuss options and arr...
London - SW18
Enquiry from: J
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Customer made an online enquiry for new double glazing. Homeowner confirmed interest via Considering a range of options Homeowner lives in London area 2+ windows Supply and install Please call to arr...
London - SW12
Enquiry from: G
Start Date: Immediate
Customer in London area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options
London - W9
Enquiry from: Seyed N
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Customer in London area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options
London - W3
Enquiry from: Helen A
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Customer living in London 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 install Pleas...
London - SW18
Enquiry from: Ishah R
Start Date: Immediate
Customer is looking to get quotes for replacement double glazing. multiple windows Supply and install Please call to quote.
London - SW9
Enquiry from: Yvonne B
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 19:42 2+ windows Supply and install Please call to discuss o...
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Would highly recommend, they found me a firm which I was happy with a quote they give me and went ahead and had my job done within 2 days of enquiring.
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The energy efficiency of windows is measured using ratings, varying from A, the most efficient, to G, the least efficient. This scheme is run by the British Fenestration Council (BFRC). To comply with Building Regulations you’ll need windows of energy efficiency at least level C.
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.
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.
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.
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