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 Harpenden in May 2026
Requests for Secondary glazing quotations in Harpenden in May 2026. 0% change from April 2026.
Requests for Secondary glazing quotations in Hertfordshire 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
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
G&T is an independent construction and property consultancy working across all sectors of the built environment.
CompetTive price
Harpenden - AL5
Enquiry from: Jade B
Start Date: Immediate
Call any time. Number of windows: 6 Number of doors: 1 Quote requested on windows and doors, in PVCu, to be supplied and fitted.
Harpenden - AL5
Enquiry from: ALLY M
Start Date: Immediate
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 doors If so how ...
Harpenden - AL5
Enquiry from: Jeremy N
Start Date: Immediate
Replacement sealed glazing unit 1100mm x 970mm on the ground floor, looking for an approximate cost. Thanks
Harpenden - AL5
Enquiry from: John C
Start Date: Immediate
mr requested quotes for upvc double glazing from a window installer around harpenden. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the inform...
Harpenden - AL5
Enquiry from: Ting G
Start Date: Immediate
customer made an enquiry for upvc double glazing and confirmed on the quotatis site they would like quotes from a window installer.customer lives in the harpenden area and would like a call to discuss...
Harpenden - AL5
Enquiry from: Kathleen B
Start Date: Less than one month
best time: any work type: upvc windows and doors are you the property owner: owner of the property what level of service do you require: supply and installation of full unit property type: terrace how...
Harpenden - AL5
Enquiry from: Kenny M
Start Date: Immediate
customer in harpenden 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.plea...
Harpenden - AL5
Enquiry from: Rubina F
Start Date: Immediate
windows - flush upvc windows in white for the whole house with half georgian astragal bars. door - a large set of sliding doors, two sets of french doors and a side door. i am looking for quotes for ...
Harpenden - AL5
Enquiry from: Tim D
Start Date: Less than one month
best time: any work type: upvc windows
Harpenden - AL5
Enquiry from: Alex M
Start Date: Immediate
Are you the home owner of that property? homeowner How many windows are you considering replacing? multiple What material do you require, UPVC? UPVC What colour do you want them to be? White Do you re...
Harpenden - AL5
Enquiry from: Mark D
Start Date: Immediate
Passanger quarter window replacement
Harpenden - AL5
Enquiry from: Fiona M
Start Date: Immediate
Home Owner UPVC Supplied and Fitted Call to Appoint
Harpenden - AL5
Enquiry from: Paul B
Start Date: Less than one month
*Property owner 2+windows uPVC Supplied and fitted Please call to appoint
Harpenden - AL5
Enquiry from: Suzanne C
Start Date: Less than one month
*Property owner 2+windows uPVC Supplied and fitted Please call to appoint
Harpenden - AL5
Enquiry from: Jennifer G
Start Date: Immediate
Product Material: uPVC_White Homeowner 2+ windows Supplied and fitted Please contact to appoint
Harpenden - AL5
Enquiry from: S
Start Date: Less than one month
Are you the property owner: Owner of the property Agreed to recieve uPVC Quotes: Yes Time scale: Less than one month Please call to appoint
Harpenden - AL5
Enquiry from: Elizabeth G
Start Date: Immediate
Home owner 2+ windows UPVC Supplied and Fitted Please Contact to Appoint
Harpenden - AL5
Enquiry from: Richard V
Start Date: Immediate
Home Owner 3+ Windows UPVC Supplied and Fitted Please call to Appoint
Harpenden - AL5
Enquiry from: Andrew K
Start Date: 1 to 3 months
Home owner 2 Windows 1 Door UPVC Required for a Garage conversion Plans in Place Supplied and Fitted Time scale 1-3months Contact to Appoint *
Harpenden - AL5
Enquiry from: Rod A
Start Date: 1 to 3 months
Homeowner 5 windows UPVC Supplied and fitted 1-3 months please contact to appoint- evenings best.
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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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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.
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.
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.
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.
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