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Alexander Constructors

0 review(s)
Offers services in ST DAVIDS
South Wales, Penarth based design and build contractor. Projects completed include new houses, extensions, kitchens, bathr...
Over 20 Reviews

Securahome PVCu

26 review(s)
Offers services in ST DAVIDS
Est. in 1994, Securahome, based in Gorseinon, Swansea, offers a range of UPVC, timber and aluminium orangeries, windows, d...

Windowmaker

0 review(s)
Offers services in ST DAVIDS
We are one of the few window companies in Swansea that manufacture their own Upvc windows and doors, using eurocell profil...

The Window and Door Store

0 review(s)
Offers services in ST DAVIDS
We are nationwide suppliers of Upvc and Aluminium windows and doors. From casement windows to 7 leaf bifolding doors; we a...

Recent Window Installer Enquiries

28 Jun

uPVC Double Glazing

Haverfordwest - SA61

Enquiry from: Susan B

Start Date: Immediate

2+ windows Supply and install

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27 May

uPVC Double Glazing

Milford Haven - SA73

Enquiry from: Wayne D

Start Date: Immediate

Submit your free quote for rated tradespeople

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26 May

uPVC Double Glazing

Haverfordwest - SA61

Enquiry from: Susan B

Start Date: Immediate

2+ windows supply and install

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10 May

uPVC Double Glazing

Milford Haven - SA73

Enquiry from: Sarah D

Start Date: Immediate

Considering a range of options 2+ windows Supply and install

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23 Apr

uPVC Double Glazing

Haverfordwest - SA62

Enquiry from: Hannah W

Start Date: Immediate

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11 Apr

uPVC Double Glazing

Milford Haven - SA73

Enquiry from: Brother M

Start Date: Immediate

2+ windows Supply and install

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12 Mar

uPVC Double Glazing

Haverfordwest - SA61

Enquiry from: Susan B

Start Date: Immediate

Considering a range of options 2+ windows Supply and install

Post a similar request >

16 Dec

uPVC Double Glazing

Milford Haven - SA73

Enquiry from: Hannah P

Start Date: Immediate

Submit your free quote for rated tradespeople

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09 Oct

uPVC Double Glazing

Pembroke Dock - SA72

Enquiry from: Marylyn D

Start Date: Immediate

What best describes your living situation? - -. 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

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25 Sep

uPVC Double Glazing

Pembroke - SA71

Enquiry from: E F

Start Date: Immediate

What best describes your living situation? How many windows are you considering replacing? - 7. What material do you require, UPVC? - Yes. What colour do you want them to be? - -. Do you require doors

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28 Aug

Window Repair

Clynderwen - SA66

Enquiry from: Martin M

Start Date: Immediate

Glass has slipped in skylight

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23 Aug

uPVC Double Glazing

Haverfordwest - SA61

Enquiry from: Susan B

Start Date: Immediate

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15 Jul

uPVC Single Window

Milford Haven - SA73

Enquiry from: Alan A

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? - -. I assume you requir

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09 Jan

uPVC Double Glazing

Haverfordwest - SA62

Enquiry from: Sarah L

Start Date: Immediate

What best describes your living situation? How many windows are you considering replacing? - 11. What material do you require, UPVC? - UPVC. What colour do you want them to be? - White. Do you require

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10 Dec

uPVC Double Glazing

Haverfordwest - SA62

Enquiry from: Elizabeth J

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 door

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04 Dec

uPVC Double Glazing

Haverfordwest - SA62

Enquiry from: Hazel M

Start Date: Immediate

Are you the home owner of that property? - Yes. How many windows are you considering replacing? - 6/8. What material do you require, UPVC? - UPVC. What colour do you want them to be? - White. Do you r

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18 Nov

uPVC Double Glazing

Haverfordwest - SA62

Enquiry from: Maureen W

Start Date: Immediate

Are you the home owner of that property? yes How many windows are you considering replacing? 11 What material do you require, UPVC? upvc What colour do you want them to be? WHITE Do you require door

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How much do Window Installer services cost?

How much do Window Installers cost? Prices for Window Installers in 2026 can differ relying on the kind of task that you require to have performed in your house. It's the inquiry we get asked a whole lot "how much do Window Installers charge?". It's generally very good to have an idea of how much a Window Installer are going to likely charge for their services. Prices will probably rise and fall based upon the products and also the tradesman selected. The table reveals the sorts of service that Window Installers typically do and also the typical cost range of these jobs. Some tasks take longer to complete than others so prices do fluctuate by task.

View our Window Installer cost guide View our Window Installer advice

The average price
of a Window Installer in St Davids is:

£2,082

Window Installer job Window Installer cost in 2026
Double glazing in St Davids £1,500-£5,000
Upvc double glazing units only in St Davids £800-£1,200
Triple glazing in St Davids £1,500-£5,000
Aluminium windows in St Davids £1,875-£2,875
Wooden window in St Davids £3,750-£5,750
Aluminium windows supply only in St Davids £2,600-£3,900
Upvc or wood porch in St Davids £2,625-£4,025
Sash window in St Davids £1,800-£6,000
Glaziers in St Davids £57-£87
Secondary glazing in St Davids £1,500-£5,000
uPVC Single Window in St Davids £225-£345
Wooden sash windows in St Davids £3,750-£5,750
Wooden windows supply only in St Davids £2,760-£4,140
Aluminium repair in St Davids £240-£360
Window repair in St Davids £268-£402
Wooden window repair in St Davids £320-£480

Related Window Installer searches in St Davids

Window Installer FAQs

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.

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.

How much is a single window?
Sometimes accidents happen, and that leads to you needing to replace just a single window. Luckily, most window fitters are happy to replace just one window if you need to. But how much a single window costs will depend on a few factors. Firstly, do you need the entire window, including the frame, replaced, or just the sealed unit? If the frame is still in good condition, glaziers and some window installers can replace the sealed unit and this will set you back around £250. If your window frame is damaged, don’t try to get away with not replacing it. Having a broken window frame can let heat escape your home, increasing your energy bills, and you’re likely to hear more traffic noise. Plus, if the frame is broken you might have trouble closing the window properly, stopping you from keeping your home secure. So how much is a single window if you need the whole thing replaced? You should expect it to cost between £400-£550, but it could cost more or less than this depending on your location, the size of the window and how tricky it is to replace. There are other factors that will impact the cost of replacing a single window. Do you want the window to have plain, leaded or Georgian bar glass? Maybe it will be a casement window, or a bay, bow or sash? The cost will increase if you want more than one opener if it’s a large window, and if you want it to have locks. Also, the standard white uPVC frame colour will probably be included in the price, but if you want a woodgrain look or a different colour uPVC this will cost more.

How much could I save on my energy bills if I install double glazing?

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.

Will double glazing stop condensation?

If you’ve got a problem with condensation and don’t have double glazing, you should find that getting new windows will help. Condensation is caused by warm air meeting a cold surface which then turns into water droplets. With two panes of glass, less heat will escape from your home and keep the window warmer, meaning when steam from the bathroom or kitchen touches your windows there should be less condensation.

What happens to my old windows?

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.

Should I use a Fensa registered installer?

Using a Fensa registered installer isn’t compulsory but it helps to protect you from cowboys and rogue traders. It will also make life a whole lot easier in regards to Building Regulations. Replacement windows must meet a certain energy efficiency rating and once fitted you need a certificate to show your installation complies. By using a Fensa registered company they’ll issue this certificate, otherwise you’ll need the council to look at the new windows.

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.

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