Secondary Glazing Costs

Compare uPVC Double Glazing Prices Near You

Home > Windows Projects > Secondary glazing

Average Secondary glazing cost

The typical cost of double glazing is approximately £400-600 per window, so you’re 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.

Average price per Secondary glazing job in 2025

Avg. price low

Avg. price low
£1,211

Avg. price

Avg. price
£3,462

Avg. price high

Avg. price high
£5,921

£6500

£4875

£3250

£1625

£0

Prices based on actual Secondary glazing costs for your area, as reported by local LeadsDoWork members.

Secondary glazing installation cost in your area 2025

Labour cost £1,400
Material cost £500
Waste removal £100
Time frame: 1-2 days

Advantages for Secondary glazing

  • Low cost vs other materials such as wood and aluminium
  • Available in a wide range of designs and styles
  • A good insulator that is highly energy efficient
  • High security to make your home more secure

Disadvantages for Secondary glazing

  • Does not use natural materials so not as environmentally friendly
  • Can discolour if not cleaned very regularly
  • Adds less value to your home than wooden windows

Secondary glazing Manufacturers

Secondary glazing FAQs

Are A-rated windows worthwhile?

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.

What is double glazing?

If a window is double glazed, it has two panes of glass that have a space between them containing argon gas. The gas works as an insulator, keeping heat inside the house as well as reducing noise. It also strengthens the window.

How much money will I save with double glazing?

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.

How much does double glazed windows cost?

Are you looking to replace your old window for a new double glazed window and wondering what it’s going to be the cost? Well, the double glazed windows market is a very competitive one in the UK with varying prices across the country. Therefore, if you shop around you’re most likely to find something that’ll fit your budget both products and quality wise.

As you would have expected, the more windows you required the more money you are going to spend. However, the cost per window is likely going to be lower depending on the number of windows you purchase. Several double glazed windows come with a 10 year warranty but it’s advisable to also obtain a solid workmanship warranty which provides coverage for any potential problems for a good period of time upon installation.

To determine the cost of double glazed windows, there are so many things to put into consideration that just the primary dimensions of the window itself. Other factors that works to decrease or increase the cost of the project includes the frames’ quality as well as the material used. For example hardwood can be quite high priced when compared to uPVC.

The number of opening windows within the frame can also play a huge role in the cost of the windows as well as the type of the glass. The cost of a double glazing window usually ranges between £100 to £3,200 per window, depending on the available options.

To have a more accurate estimate of the cost of a double glazing window, you’ll need a obtain a survey from a double glazing installer who can take into account any possible complications that may arise when installing your windows while also giving an advise on the most suitable window style for your property.

What is a window sash?

Windows, being a very crucial feature in every home, are one of the things you simply can’t afford to ignore in your home. Having a good understanding and solid knowledge of your windows’ components like the window sash will help you stay up to date with them and able to identify any minor mishaps early on before it leads to a much bigger problem. So what exactly is a window sash?

Well without much fuss, a window sash is simply that part of your windows that’s able to open and close. And there could as well be more than one window sash that’s operable depending on your window’s type. Window sash usually possess a very basic design as well as structure. What’s more? This section of a window happens to be a frame that’s designed in such a way to make for easy placement inside the whole window casement. You’ll discover inside the sash frame, the window glass alongside any framework possessed by your window which includes grids.

Usually, the sash is fitted into the frame of the window on a runners’ set in such a way that allows for both upward and downward movements. And finally, the window sash’s frame typically comes with a locking system which provided for extra safety and security.

The window sash is a vital feature that can determine the durability and overall performance of the windows. In the event whereby your window sash is malfunctioning, it can result to numerous problems which includes both drafts as well as leaks. As a result, it’s very important to keep your window sashes in a great working condition as failure to do so will make opening and closing your windows a really difficult task.

Do I need to stay at home while my windows are being replaced?

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.

How can I find out how energy efficient my new windows will be?

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.

How long does double glazing last?

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.

Our reviews

Average

Would highly recommend

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.

Good easy way to find a selection of…

Good easy way to find a selection of trades you need all in one place.

Love LeadsDoWork it's a big part of my …

Love LeadsDoWork it's a big part of my Business I would recommend to anyone

Hi -Spec Windows and Doors

Based: in Glasgow, G5

Hi -Spec Windows and Doors is based in Glasgow and have 1 positive reviews

Latest review

WILLIAM B., G20
22nd June 2025

Windows | uPVC in Glasgow

No pressure sales, respectful hard working and experienced fitters. Sales woman Aman...

WFS ANGLIA

Based: in Peterborough, PE2

Here at WFS Anglia Ltd, we have built ourselves a fantastic reputation throughout Cambridge, Northam...

Latest review

Colin S., PE14
8th December 2024

Windows | uPVC in Wisbech

Straight forward no pressure quotation took 1/2 hour. Fitted within a few weeks.very...

GCB Windows

Based: in Newry, BT34

Bell Windows was brought together in 2008 by Gordon Bell. Even though it is a relatively young compa...

Latest review

Fiona R., BT22
5th April 2025

Windows | uPVC in Newtownards

Excellent, will go with Bell, just awaiting budget release.

ECO WARM HOMES SW

Based: in Rotherham, EX17

We are a Home improvements company specialising in replacement windows doors and conservatory instal...

Latest review

Vaughan N., EX39
18th June 2024

Windows | uPVC in Bideford

Very polite, no pressure

Secured homes

Based: in Doncaster, DN8

Secured homes is based in Doncaster and have 11 positive reviews

Latest review

Ken S., DN12
22nd May 2024

Windows | uPVC in Doncaster

n─ħ,hvkrjtrxjrjtr

The Window Company

Based: in Nottingham, NG14

The Window Company have been trading since 2001 in the East Midlands area, offering a bespoke servic...

Latest review

Denise M., S80
6th April 2024

Windows | uPVC in Worksop

John came to give a quote he was honest and friendly with no bullshit, he came measur...

A Rated Home Improvements

Based: in Swansea, SA4

Founded in 2010 in Port Talbot, but now based in Gorseinon, A-Rated Home Improvements install double...

Latest review

Lesley H., CF36
14th March 2024

Windows | uPVC in Porthcawl

Excellent presentation with all questions answered .. and a great product .. larger c...

Affordable Quality Windows

Based: in Neath, SA10

Affordable Quality Windows is based in Neath and have 7 positive reviews

Latest review

Lesley H., CF36
14th March 2024

Windows | uPVC in Porthcawl

Already had three engagements so declined appointment .

A One Home Improvements South West

Based: in Swansea, SA5

Over 35 years’ experience, we offer the complete package from design to installation & 10 years be...

Latest review

Lesley H., CF36
14th March 2024

Windows | uPVC in Porthcawl

Really positive appointment fully explained everything and the products .. seemed to...

Barriertherm UK

Based: in Middlesbrough, TS1

We are a family run company run on family values we provide a personal professional service offering...

Latest review

Shane W., NE9
20th February 2024

Windows | uPVC in Gateshead

So far so good , Non of the sales pitch just exactly what we wanted to see and hear, ...

Rated Local window installers

Britelite Windows Ltd

156 review(s)
Based: in Maidstone, ME15 9XY

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...

Conservatories & Windows Direct

2 review(s)
Based: in Cannock, WS11 0BW

Conservatories & Windows Direct are suppliers and installers of high quality energy efficient Conservatories, Orangeries, Windows & doors. Unique to our company is OPTITHERM, a combination of the market leading products to enable us to provide our...

WFS ANGLIA LTD

61 review(s)
Based: in Peterborough, PE2 8bg

Here at WFS Anglia Ltd, we have built ourselves a fantastic reputation throughout Cambridge, Northamptonshire, Peterborough, Milton Keynes, Buckinghamshire and surrounding areas. This is based upon our perfect harmony between high quality workmanship...

Crystal Windows and Doors Ltd

64 review(s)
Based: in Romford, RM7 7PN

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,...

A Rated Home Improvements Limited

26 review(s)
Based: in Swansea, SA4 9WN

Founded in 2010 in Port Talbot, but now based in Gorseinon, A-Rated Home Improvements install double glazing, uPVC and Aluminium windows, doors and conservatories to a professional and very high standard. With almost 10 years’ experience operating ...

The Window Company

13 review(s)
Based: in Nottingham, NG14 5FP

The Window Company have been trading since 2001 in the East Midlands area, offering a bespoke service for windows, conservatories and roofline. As a company we strive for quality of product, excellence of installation and unequalled customer service....

C R Smith Glaziers Dunfermline Ltd

20 review(s)
Based: in Dunfermline, KY12 0RN

With over 50 years of experience in the windows and doors industry, CR Smith is firmly established as Scotland’s leading home improvement manufacturer and supplier. We have designed, constructed and installed more windows and doors in Scotland th...

Kent Glazing Limited

43 review(s)
Based: in Gillingham, ME7 3NE

KENT GLAZING - number one installer throughout the Kent area. Family business - with over 30 years experience - specialising in Double Glazing, Windows, Doors & Conservatories.

GCB Windows Ltd

26 review(s)
Based: in Newry, BT34 4TY

Bell Windows was brought together in 2008 by Gordon Bell. Even though it is a relatively young company, Gordon himself has worked with uPVC products for over 30 years and also in the Building trade for a further 12 years before that

A One Home Improvements South West Ltd

1 review(s)
Based: in Swansea, SA5 4JB

Over 35 years’ experience, we offer the complete package from design to installation & 10 years beyond. We offer start to finish project management where as well as our 1st class window fitters and carpenters, we can take care of any building work ...

Similar Customer Enquiries for Secondary glazing

13 Jul

Windows | uPVC

Bradford - BD13

Enquiry from: Helena D

Start Date: Immediate

Customer living in Bradford 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...

Post a similar request >

13 Jul

Windows | uPVC

Stoke-on-Trent - ST3

Enquiry from: Jude L

Start Date: Immediate

Customer in Stoke-on-Trent area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options

Post a similar request >

13 Jul

Windows | uPVC

Leeds - LS8

Enquiry from: Nasreen Z

Start Date: Immediate

Customer is looking to get quotes for replacement double glazing. multiple windows Supply and install Please call to quote.

Post a similar request >

13 Jul

Windows | uPVC

Leicester - LE5

Enquiry from: Vahidabanu 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 SMS//phone Customer lives in Leicester area 2+ windows Supply and install...

Post a similar request >

13 Jul

Windows | uPVC

Dewsbury - WF12

Enquiry from: Razwan H

Start Date: Immediate

Customer made an online enquiry for quotes for double glazing replacement via one of our websites. Customer lives in Dewsbury area and is considering a range of options for their home. Confirmed inter...

Post a similar request >

13 Jul

Windows | uPVC

Bradford - BD4

Enquiry from: Kulvinder K

Start Date: Immediate

Customer in Bradford area made an enquiry for double glazing online. Confirmed via SMS at 17:29 2+ windows Supply and install Please call to arrange an appointment to discuss options

Post a similar request >

13 Jul

Windows | uPVC

Rotherham - S65

Enquiry from: Tracey H

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.

Post a similar request >

13 Jul

Windows | uPVC

Tipton - DY4

Enquiry from: Paul G

Start Date: Immediate

Customer made an online enquiry for quotes for double glazing replacement via one of our websites. Customer lives in Tipton area and is considering a range of options for their home. Confirmed via SMS...

Post a similar request >

13 Jul

Windows | uPVC

Blackburn - BB1

Enquiry from: Naheeda J

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.

Post a similar request >

13 Jul

Windows | uPVC

Coventry - CV2

Enquiry from: Daniela A

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 arrange ...

Post a similar request >

13 Jul

Windows | uPVC

Walsall - WS5

Enquiry from: Jahangir K

Start Date: Immediate

Customer in Walsall area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options

Post a similar request >

13 Jul

Windows | uPVC

Rotherham - S66

Enquiry from: Esohe O

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 Rotherham area 2+ windows Supply and install Please ca...

Post a similar request >

13 Jul

Windows | uPVC

Bradford - BD6

Enquiry from: Raza A

Start Date: Immediate

Customer made an enquiry for replacement double glazing via one of our websites. Looking at various options Confirmed interest, SMS at 02:45, email at 02:45 2+ windows Supply and install Please c...

Post a similar request >

13 Jul

Windows | uPVC

Pershore - WR10

Enquiry from: James L

Start Date: Immediate

Customer made an online enquiry for quotes for double glazing replacement via one of our websites. Customer lives in Pershore area and is considering a range of options for their home. 2+ windows Supp...

Post a similar request >

13 Jul

Windows | uPVC

London - SW19

Enquiry from: Mubashar A

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

Post a similar request >

13 Jul

Windows | uPVC

Heckmondwike - WF16

Enquiry from: Farida H

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.

Post a similar request >

13 Jul

Windows | uPVC

Blackburn - BB2

Enquiry from: Shabbir P

Start Date: Immediate

Customer in Blackburn area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options

Post a similar request >

13 Jul

Windows | uPVC

Leeds - LS11

Enquiry from: Muhammed L

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 arrange ...

Post a similar request >

13 Jul

Windows | uPVC

Slough - SL1

Enquiry from: Kalminder K

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 Slough area 2+ windows Supply and in...

Post a similar request >

13 Jul

Windows | uPVC

Whitchurch - SY13

Enquiry from: Charlotte W

Start Date: Immediate

Customer in Whitchurch area made an enquiry for double glazing online. Confirmed via SMS at 08:11 2+ windows Supply and install Please call to arrange an appointment to discuss options

Post a similar request >

Local & reliable window installers near me

Tell us about your secondary glazing project

Answer a few quick questions, so we can match you with local window installers who can help.

Find up to 4 window installers in your area

Get free, no-obligation local secondary glazing quotes from 4 verified window installers working in your area.

Hire with confidence

Compare customer reviews, services and prices, and choose the right tradesperson for you.