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 Sunbury-on-thames in May 2026
Requests for Secondary glazing quotations in Sunbury-on-thames 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
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I cannot remember who did quote
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
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
Sunbury-on-Thames - TW16
Enquiry from: Sachin M
Start Date: Immediate
Customer made an online enquiry for quotes for double glazing replacement via one of our websites. 2+ windows Supply and install Please call to arrange an appointment
Sunbury-on-Thames - TW16
Enquiry from: Charlie 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.
Sunbury-on-Thames - TW16
Enquiry from: Bridie M
Start Date: Immediate
What would you like quoted? Windows
Sunbury-on-Thames - TW16
Enquiry from: Daniela F
Start Date: Immediate
Good morning, I am looking to buy 3 windows and one sliding door uPVC Double Glazing , as per the below measurements. Could I please have a quote including installation and a delivery time frame ? ...
Sunbury-on-Thames - TW16
Enquiry from: Dale D
Start Date: Immediate
sell 3 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...
Sunbury-on-Thames - TW16
Enquiry from: Loz S
Start Date: Less than one month
best time: any work type: upvc windows and doors are you the property owner: relative of owner what level of service do you require: supply of full unit only property type: detached how many windows d...
Sunbury-on-Thames - TW16
Enquiry from: Maryann S
Start Date: Immediate
Customer is looking to have new windows installed. They are unsure of options so would like to discuss. Confirmed interest via Customer lives in Sunbury-on-Thames area 2+ windows Supply and install ...
Sunbury-on-Thames - TW16
Enquiry from: Sai K
Start Date: Immediate
customer has confirmed that they are looking to to get quotes for upvc windows in the new single storey extension they are having created. are you the property owner: owner of the property property ty...
Sunbury-on-Thames - TW16
Enquiry from: Tereth K
Start Date: Immediate
are you the home owner of that property? yes how many windows are you considering replacing? 8 what material do you require, upvc? upvc what colour do you want them to be? white do you require doors i...
Sunbury-on-Thames - TW16
Enquiry from: Narinder G
Start Date: Immediate
are you the property owner: owner of the property property type: semi detached what level of service do you require: supply and install interested in doors quote: front door what materials are you lo...
Sunbury-on-Thames - TW16
Enquiry from: Derek B
Start Date: Immediate
Customer made an online enquiry for new double glazing. Mr confirmed interest via /phone Considering a range of options Mr lives in Sunbury-on-Thames area 2+ windows Supply and install Please call to...
Sunbury-on-Thames - TW16
Enquiry from: Bhavin M
Start Date: Immediate
On the front door, I have had a break in. The bottom.window is shattered and need replacing.
Sunbury-on-Thames - TW16
Enquiry from: Sue B
Start Date: Immediate
Home Owner Supplied and Fitted Call to Appoint
Sunbury-on-Thames - TW16
Enquiry from: Raymond B
Start Date: Less than one month
Are you the property owner: Owner of the property Property Type: Detached What level of service do you require: Supply and Install Time scale: Less than one month Interested in Doors Quote: Patio/Fre...
Sunbury-on-Thames - TW16
Enquiry from: Rups S
Start Date: Immediate
Home Owner 2+Windows UPVC Supplied and Fitted Please contact to appoint
Sunbury-on-Thames - TW16
Enquiry from: Alfrede E
Start Date: 1 to 3 months
*Property owner 2+windows uPVC Supplied and fitted Please call to appoint
Sunbury-on-Thames - TW16
Enquiry from: Firoza S
Start Date: 1 to 3 months
Are you the property owner: Owner of the property Do you require Plumbing Work: Yes Interested in Plumbing Quote: Yes Do you require Electrical Work: Yes Interested in Electrical Quote: Yes Would you...
Sunbury-on-Thames - TW16
Enquiry from: Jessie D
Start Date: Immediate
Home Owner UPVC Supplied and Fitted Call to Appoint
Sunbury-on-Thames - TW16
Enquiry from: Mark G
Start Date: 1 to 3 months
I am looking for quotes for 4+ uPVC windows Are you the property owner: Tenant (with permission) What level of service do you require: Supply and installation of full unit Property Type: Detached How ...
Sunbury-on-Thames - TW16
Enquiry from: Christian F
Start Date: Less than one month
Are you the property owner: Owner of the property Other Forms: None Please call to appoint
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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.
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.
All new windows come with an energy efficiency rating from A to G. A is best, while G is the lowest rating. Anything above C is considered good, but these days most companies will be able to supply you with A-rated windows to maximise your energy efficiency.
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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