Secondary Glazing in Merton

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Average Secondary glazing cost in Merton

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 2026

Avg. price low

Avg. price low
£859

Avg. price

Avg. price
£1,380

Avg. price high

Avg. price high
£2,734

£2900

£2175

£1450

£725

£0

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

Secondary glazing installation cost in Merton 2026

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

Secondary glazing searches in June 2026

Secondary glazing Projects in Merton in May 2026

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Requests for quotations in Merton in May 2026

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Requests for Secondary glazing quotations in Merton in May 2026. 0% change from April 2026.

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Requests for Secondary glazing quotations in London County in May 2026. 0% change from April 2026.

Source: Numbers calculated based on the search volumes in major search engines

Secondary glazing searches in cities and towns near Merton May 2026

Merton

The London Borough of Merton is a borough in south-west London, England. The borough was formed under the London Government Act 1963 in 1965 by the merger of the Municipal Borough of Mitcham, the Municipal Borough of Wimbledon plus the Merton and Morden Urban District, all formerly within Surrey. The borough derives its name from the historic parish of Merton, which was centred on the location now referred to as South Wimbledon. The local authority is Merton London Borough Council.

Based on population estimates made during 2014, the borough has a permanent population of about 203515 inhabitants. The borough is also served by a number of London Tramlink stops from Wimbledon, which goes to Croydon, New Addington, Elmers End and Beckenham. It is the only London Borough which has tube, rail and tram services.

The primary industrial centres in Merton are Mitcham, Morden and Wimbledon, of which Wimbledon is the biggest. Other smaller sized centres consist of Raynes Park, Colliers Wood, South Wimbledon, Wimbledon Park and Pollards Hill. Each year, Wimbledon, one of the four tennis Grand Slam tournaments, is held at the All England Lawn Tennis and Croquet Club in Church Road Wimbledon. The event happens over a fortnight at the end of June and start of July and it's the largest annual sporting event to take place in the UK, attracting more than 200000 guests in the course of the Wimbledon fortnight.

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Secondary glazing pros in Merton

Britelite Home Improvements LTD

1998 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...

Latest review

Mazdak A., SM4
3

Windows | uPVC in Morden

Not a very structured approach to how to make contact, do the consultation, timeline of providing the cost and then foll...

Crystal Windows and Doors Ltd

1466 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,...

Latest review

Abdullah A., E5
4

Windows | uPVC in London

online reviews scared me

BAU UK Ltd

57 review(s)
Based: in Petersfield, GU31 4AD

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...

Latest review

Annette R., PO16
5

Windows | uPVC in Fareham

Excellent Service

Valley Glazing Ltd.

2 review(s)
Based: in Gravesend, DA12 5RR

Valley Glazing is a friendly family run business, with over 34 years of experience in the trade. We are FENSA registered and supply a 10 year insurance backed guarantee with deposit protection. We supply and install high quality Windows and Doors i...

Latest review

Margaret D., TN2
4

Windows | uPVC in Tunbridge Wells

Thoughtful insight into what was good from my point of view.

Maceland Window and Door Systems LTD

5 review(s)
Based: in Surrey, KT8 2HT

CLICK IMAGE TO ENTER SITE

Latest review

Graham T., KT18
5

Windows | uPVC in Epsom

I cannot remember who did quote

Falcon Windows

3 review(s)
Based: in Sutton, SM1 2EJ

Suppliers and installers of quality upvc windows and doors, aluminium windows and doors, bi folds, rooflights, lanterns and more right across Cheam, Sutton, London and Surrey. Call today for a quote

Latest review

Ishver M., KT2
4

Windows | uPVC in Kingston upon Thames

good but not competative

Royale Glazing Installations LTD

5 review(s)
Based: in Feltham, TW13 7LW

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 ...

Latest review

Martin H., TW1
5

Windows | uPVC in Twickenham

excellent

Britains Best Casement Glazing Ltd

5 review(s)
Based: in Brentford, TW8 9HF

Latest review

O E., W6
4

Windows | uPVC in London

Had to phone several times to try to catch me in. Salesperson came this morning (10th March). Sensible, factual, clea...

Creative Windows & Doors LTD

19 review(s)
Based: in Banstead, SM7 2NL

Creative Windows & Doors | windows and doors surrey - Creative windows and doors supplier

Latest review

Ishver M., KT2
5

Windows | uPVC in Kingston upon Thames

very competative

Cj'S Glazing LTD

1 review(s)
Based: in Reading, RG7 1WY

Latest review

Nina E., E11
4

Windows | uPVC in London

Waiting on measurements

Similar Customer Enquiries for Secondary glazing in Merton

01 Jun

Windows | uPVC

London - SW17

Enquiry from: Gina W

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. are you the property owner: owner of the property what level of se...

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25 Mar

Windows | uPVC

London - SW17

Enquiry from: Fleur 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 ...

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15 Feb

Windows | uPVC

London - SW20

Enquiry from: Nihat D

Start Date: Immediate

customer has a windows project they are looking to have done, specially they want quotes for upvc double glazing. they are unsure of options so would like to discuss with a window installer.confirmed ...

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07 Feb

Windows | uPVC

London - SW17

Enquiry from: Alexandra 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 >

02 Feb

Windows | uPVC

London - SW19

Enquiry from: M

Start Date: Immediate

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

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27 Jan

Windows | uPVC

London - SW19

Enquiry from: Miriam P

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 >

04 Dec

Windows | uPVC

London - SW17

Enquiry from: Kate R

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 >

02 Dec

Windows | uPVC

New Malden - KT3

Enquiry from: Tiana K

Start Date: Immediate

Call any time. Number of windows: 5 Number of doors: 1 Quote requested on windows and doors, in PVCu, to be supplied and fitted.

Post a similar request >

20 Nov

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Verona B

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 >

12 Nov

Windows | uPVC

London - SW16

Enquiry from: Graziella M

Start Date: Immediate

Customer in London area made an enquiry for double glazing online. Confirmed via SMS at 15:45 Confirmed via email at 15:45 2+ windows Supply and install Please call to arrange an appointment to discus...

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09 Nov

Windows | uPVC

New Malden - KT3

Enquiry from: Sonia H

Start Date: Immediate

customer has a windows project they are looking to have done, specially they want quotes for upvc double glazing. they are unsure of options so would like to discuss with a window installer.confirmed ...

Post a similar request >

26 Oct

Windows | uPVC

London - SW19

Enquiry from: Jed B

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 >

23 Oct

Windows | uPVC

London - SW19

Enquiry from: B

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 >

23 Oct

Windows | uPVC

London - SW18

Enquiry from: Alexander C

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 >

22 Oct

Windows | uPVC

London - SW18

Enquiry from: Ben B

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 London area 2+ windows Supply and install Please call ...

Post a similar request >

17 Oct

Windows | uPVC

Thornton Heath - CR7

Enquiry from: Antonella A

Start Date: Immediate

Call any time. Number of windows: 4 Quote requested on windows, in PVCu, to be supplied and fitted.

Post a similar request >

16 Oct

Windows | uPVC

London - SW19

Enquiry from: Kate M

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 >

14 Oct

Windows | uPVC

London - SW17

Enquiry from: Charlotte V

Start Date: Immediate

Customer made an online enquiry for new double glazing. Homeowner confirmed interest via Considering a range of options Homeowner lives in London area 2+ windows Supply and install Please call to arr...

Post a similar request >

10 Oct

Windows | uPVC

London - SW18

Enquiry from: Sian M

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 >

25 Sep

Windows | uPVC

London - SW19

Enquiry from: Sarah E

Start Date: Immediate

Call back anytime. Number of windows: 9 Number of doors: 1 Quote requested on windows and doors, in PVCu, to be supplied and fitted.

Post a similar request >

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FAQs

What if my home isn’t suitable for double glazing?

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.

Should I get all my windows replaced at once?

You don’t have to, especially if you’re on a budget. If you’re only replacing some, it’s a good idea to get all the windows on one side of your property replaced at the same time, so they all look the same. Be aware, obviously, huge savings could be had by having a number of windows replaced at the same time.

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.

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.

Secondary glazing

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Customer Reviews

Overall rating:


Merton Secondary glazing installers are rated 4.4 out of 5 based on 22 reviews of 112 pros.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with Secondary glazing projects that have been connected with Secondary glazing pros to help them. All Secondary glazing contractors All Merton Secondary glazing contractors

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