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 |
£3200
£2400
£1600
£800
£0
| Labour cost | £1,400 | |
| Material cost | £500 | |
| Waste removal | £100 |
Requests for quotations in Northolt in May 2026
Requests for Secondary glazing quotations in Northolt in May 2026. 0% change from April 2026.
Requests for Secondary glazing quotations in Middlesex in May 2026. 0% change from April 2026.
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
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...
Waiting on measurements
Homestyle are an independent Oxfordshire company specialising in bespoke installs of windows, doors and conservatories. Every customer and every home improvement is unique and can be tailored to suit the most discerning of customers. We offer a high ...
Very professional
Northolt - UB5
Enquiry from: S
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Customer living in Northolt 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 Ple...
Northolt - UB5
Enquiry from: Thibakaran M
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Customer in Northolt area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options
Northolt - UB5
Enquiry from: Tushar S
Start Date: Immediate
Customer made an online enquiry for new double glazing. Homeowner confirmed interest via email/SMS/ Considering a range of options Homeowner lives in Northolt area 2+ windows Supply and install Please...
Northolt - UB5
Enquiry from: Young Eun P
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.
Northolt - UB5
Enquiry from: Edna W
Start Date: Immediate
Customer made an online enquiry for quotes for double glazing replacement via one of our websites. Customer lives in Northolt area and is considering a range of options for their home. 2+ windows Supp...
Northolt - UB5
Enquiry from: Amna A
Start Date: Immediate
Customer is looking to have new windows installed. They are unsure of options so would like to discuss. Confirmed interest via /phone Customer lives in Northolt area 2+ windows Supply and install Plea...
Northolt - UB5
Enquiry from: Bilqees B
Start Date: Immediate
Customer in Northolt area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options
Northolt - UB5
Enquiry from: Farah K
Start Date: Immediate
Customer made an online enquiry for replacement windows via one of our websites. Confirmed via . 2+ windows Supply and install Please call to arrange an appointment to quote.
Northolt - UB5
Enquiry from: Natasha C
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.
Northolt - UB5
Enquiry from: Sim S
Start Date: Immediate
Looking for a quote for an installation of a large Bi-Fold Window, double-glazed. Call any time. Number of windows: 3 Quote requested on windows, in PVCu, to be supplied and fitted.
Northolt - UB5
Enquiry from: Ijaz Q
Start Date: Immediate
*homeowner 2+ windows upvc supplied and fitted please call to appoint
Northolt - UB5
Enquiry from: Precious A
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 15:21 2+ windows Supply and install Please call to discuss ...
Northolt - UB5
Enquiry from: Lewis Y
Start Date: Immediate
need a few different quotes for a 3 bedroom house, 2 of which are are bay windows for the front of the house as well as 5 other windows are you the property owner: tenant (with permission) what level ...
Northolt - UB5
Enquiry from: Krishanthakusumsiri B
Start Date: Immediate
Customer in Northolt area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options
Northolt - UB5
Enquiry from: Khadiyjah C
Start Date: Immediate
Customer made an online enquiry for new double glazing. Miss confirmed interest via Considering a range of options Miss lives in Northolt area 2+ windows Supply and install Please call to arrange ap...
Northolt - UB5
Enquiry from: Eryk R
Start Date: Immediate
Customer living in Northolt area made an enquiry for double glazing quotes via one of our websites. Customer confirmed interest via / SMS at 19:34/ email at 19:34 Mr needs advice on options 2+ window...
Northolt - UB5
Enquiry from: Jada J
Start Date: Immediate
customer made an enquiry for replacement double glazing via one of our websites. looking at various options confirmed interest, sms at 21:04, email at 21:04 2+ windows supply and install please call ...
Northolt - UB5
Enquiry from: John P
Start Date: Immediate
price for 12 windows, 2 solid core doors and 1 patio door. i am looking for quotes for 4+ windows are you the property owner: owner of the property what level of service do you require: supply and ...
Northolt - UB5
Enquiry from: Dipson A
Start Date: Immediate
customer in northolt area has requested that we arrange quotes for their upvc double glazing project.mr are considering various options and would like to discuss with a window installer directly.pleas...
Northolt - UB5
Enquiry from: Tsehay T
Start Date: Immediate
call anytime. number of windows: 5 number of doors: 1 quote requested on windows and doors, in pvcu, to be supplied and fitted. i am looking for quotes for 4+ windows are you the property owner...
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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.
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.
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.
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.
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