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 Portsmouth in June 2026
Requests for Secondary glazing quotations in Portsmouth in June 2026. 0% change from May 2026.
Requests for Secondary glazing quotations in Hampshire in June 2026. 0% change from May 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
Doors, UPVC Windows, Conservatories & Orangeries. With over 35 year’s experience in the trade we use a range of premium REHAU® materials to achieve a high quality finish. We offer a 10 year insurance backed guarantee with peace of mind we get the...
Owner fitter, local company very polite, courteous and professional removed shoes, explained profiles and windows etc, ...
We offer an impressive range of external and internal doors - entrance and back doors, patio, French and bifold, we have the ideal choice that will suit your home.
very helpful and informative
We're a family run business providing bespoke extensions, conservatories, windows and doors and kitchen installations. on DJL Home Design &
very good communication and good offer
Test Valley Windows are installers of quality, bespoke PVCu windows, doors, conservatories and roofline products. A well established, company, we have been operating from Andover in Hampshire since 1995
Excellent service!, everything about the visit was perfect and we have decided to have our windows with Test Valley.
Portsmouth - PO6
Enquiry from: Rachael P
Start Date: Immediate
Call anytime. Number of windows: 7 Number of doors: 2 Quote requested on windows and doors, in PVCu, to be supplied and fitted.
Portsmouth - PO3
Enquiry from: Matthew P
Start Date: Immediate
Call any time. Number of windows: 7 Number of doors: 2 Quote requested on windows and doors, in PVCu, to be supplied and fitted.
Portsmouth - PO2
Enquiry from: Ruth G
Start Date: Immediate
What best describes your living situation? - Homeowner - Joint. How many windows are you considering replacing? - 1 Door (maybe 2 . What material do you require, UPVC? - upvc. What colour do you want ...
Portsmouth - PO6
Enquiry from: Jane F
Start Date: Immediate
Call any time. Number of windows: 3 Quote requested on windows, in PVCu, to be supplied and fitted.
Portsmouth - PO6
Enquiry from: Kelsar D
Start Date: Immediate
Call back anytime. Number of windows: 10 Number of doors: 2 Quote requested on windows and doors, in PVCu, to be supplied and fitted.
Portsmouth - PO2
Enquiry from: Georgina C
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 Portsmouth area 2+ windows Supply and install Please c...
Portsmouth - PO2
Enquiry from: Roxanne F
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.
Portsmouth - PO2
Enquiry from: Debra H
Start Date: Immediate
Customer in Portsmouth area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options
Portsmouth - PO2
Enquiry from: Carrie W
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.
Portsmouth - PO6
Enquiry from: Prince O
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.
Portsmouth - PO6
Enquiry from: User W
Start Date: Immediate
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 Portsmouth area 2+ windows Supply and i...
Portsmouth - PO6
Enquiry from: Chloe M
Start Date: Immediate
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 Portsmouth area 2+ windows Supply and i...
Portsmouth - PO6
Enquiry from: Bekey S
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.
Portsmouth - PO6
Enquiry from: Sarah C
Start Date: Immediate
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 many windows do you need: 4+ windows do y...
Portsmouth - PO1
Enquiry from: Dexter L
Start Date: Immediate
What best describes your living situation? - Homeowner - Joint. How many windows are you considering replacing? - 9. What material do you require, UPVC? - UPVC. What colour do you want them to be? - W...
Portsmouth - PO1
Enquiry from: Gurdial S
Start Date: Immediate
Call anytime Number of windows: 6 Number of doors: 2 Quote requested on windows and doors, in PVCu, to be supplied and fitted.
Portsmouth - PO2
Enquiry from: Stephen P
Start Date: Immediate
Are you the home owner of that property? - Sole. How many windows are you considering replacing? - 5. What material do you require, UPVC? - -. What colour do you want them to be? - -. Do you require d...
Portsmouth - PO2
Enquiry from: Cara W
Start Date: Immediate
I need 5 casement windows plus 2 bays with 3 windows each and a front door with an additional 2 windows surrounding the door.
Portsmouth - PO3
Enquiry from: Darren B
Start Date: Immediate
New bay windows, and 3 other windows to the front elevation of our house
Portsmouth - PO2
Enquiry from: Sue L
Start Date: Immediate
new composite door and windows each side of door! are you the property owner: owner of the property what level of service do you require: supply and installation of full unit property type: detached h...
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After fitting your new windows, your installer should take away and dispose of your old windows. If you want to keep them, just let your installer know before they start work. The UPVC frames are melted down and used on the unseen parts of new windows. Aluminium frames are re-smelted and wooden are broken down and used as chipboard.
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.
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.
Are you about to replace your old windows and wondering just how much it’ll cost to have a new one fitted? If yes, then you’ve come to the right place! The question is a very straight forward one, however a direct answer can not be provided as determining window prices for a replacement project can be a very tricky challenge. With a plethora of influencing factors that can play a key role in the price of both materials and labour to be used, it could be extremely hard for a window installer to provide a cost estimate without paying you a visit beforehand.
The factors that can go a long way in determining the price of your new window includes the size of the window, frame material, style chosen, your location, rates charged by the window installer (these rates can be different from an installer to an installer, so it’ll probably be in your best interest to compare quotes to identify the most competitive price) as well as the type of glass required.
Generally, for a small flat featuring four windows, the average cost for new windows would be between the range of £2,100 to £2,300. This range provided covers the cost of double glazed uPVC casement windows as well as the installation price. In the same tone, a home with up to 8 windows will have an average cost for window replacement between the range of £4,400 to £4,600, wile also taking into account the installation price. Whereas a house comprising 10 windows could begin at an average cost of window replacement between the the range of £5,200 to £5,500, and a 15 window home will be between the range of £8,400 to £8,600. it should be noted that the aforementioned figures only include the standard number of windows with a uPVC frame and the installation cost.
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