How to replace the glass in a uPVC window?

It’s not too difficult to replace the glass in a uPVC window, so if you’re a confident DIYer you could have a go at this yourself. We’ll go through the main steps on how to replace the sealed unit in a uPVC double glazed window: Using a rubber mallet and a strong pallet knife, remove the beading around the window. You might think they’re part of the frame, but they’re actually separate on the inside of the frame and can be taken out by using pallet knife to prize them out. Start with one of the longest beads first and leave the top bead until last. Give the glass a little tap to loosen it if it doesn’t come out straight away, then the whole unit should slide out easily. Just make sure it falls towards you and not back out onto the ground below! Clear any debris that has found its way into the frame with a brush. Add spacers at the bottom of the frame – these could be pieces of plastic. Get your new sealed unit (make sure you measure the glass before you buy one so you know which size to get) and carefully take it out of the packaging. Look for the British Standard mark – that shows you the bottom of the glass. Lift the glass into the frame, starting with the bottom first, and make sure that it fits square in the frame before taking the spacers out. Use a little washing up liquid to spread along the beads to make it easier when you slide them back into the frame. If they simply push and clip back in, you can use something like a block of wood to help you push them in correctly. Put them back in reverse order to how you took them out. And there you go! If you’re feeling confident you can have a go at replacing the glass in your uPVC window yourself. But if you’ve got any worries, leave it to a window installer who will be able to do it in less than an hour.

Replacement Glass (Glazing) in Stirling

Find Replacement Glass (Glazing) Prices in Stirling

Replacement Glass (Glazing) in Stirling

Are you searching for Glaziers in Stirling? Our network of glaziers can aid with your project. Every one of our Window Installer in Stirling are examined so you can see local testimonials, when business was opened, ratings, approval and also rate allowing you to make the ideal decision on who to employ. Let us take the headache out of locating up to 4 experts for your Glaziers project.

Glaziers reduced, shape as well as install glass for a variety of factors consisting of home windows, showers as well as mirrors. It's a extremely specialist trade and also should not be attempted by an amateur.

Glaziers can be needed for both domestic and business glass installments as well as whatever your glazing requires; you'll have the ability to discover support from these qualified tradespersons.

Why would certainly I need a glazier?

One of the most preferred factors for requiring a glazier would be to replace a smashed window pane. Glaziers will certainly have the ability to cut and shape the pane swiftly as well as successfully to improve your house's safety and security and also alleviate your mind.

We will offer approximately four Glaziers pros in your area, who will offer quotations for the job you desire done. You'll receive a home visit from experts in Stirling who'll aid you to select the appropriate Glaziers for your residence before accomplishing the setup. Enter your postcode to begin looking now.

Average Glaziers cost in Stirling

The regular cost of Glaziers is £75. Costs alter based on the materials and the business picked. The upper price range can be as high as £86.25. The material costs are in most cases approximately £18.75

Average price per Glaziers job in 2025

Avg. price low	Avg. price low £57
Avg. price	Avg. price £75
Avg. price high	Avg. price high £87

£200

£150

£100

£50

£0

Prices based on actual Glaziers costs for Stirling, as reported by local LeadsDoWork members.

Glaziers installation cost in Stirling 2025

	Labour cost	£53
	Material cost	£19
	Waste removal	£4

Time frame: 1 day

Glaziers searches in June 2025

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No. of estimated projects Estimates by cities and towns

Glaziers Projects in Stirling in May 2025

726

Requests for quotations in Stirling in May 2025

0

Requests for Glaziers quotations in Stirling in May 2025. 0% change from April 2025.

0

Requests for Glaziers quotations in Stirlingshire in May 2025. 0% change from April 2025.

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

Glaziers searches in cities and towns near Stirling May 2025

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Stirling

Stirling is the smallest city within Scotland and has a populace of just 45,750. The city retains most of its historical value and was built around a large fortress and medieval old town. Its city reputation is fairly new, just being granted in 2002 as part of the Queen's Golden Jubilee celebrations. Whilst the city does have a very traditional charm, Stirling has modernised in recent times and expanded to look after an increasing population.

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Similar Customer Enquiries for Glaziers in Stirling

25 Jan

Windows | Glazing

Stirling - FK8

Enquiry from: Christine M

Start Date: Immediate

Broken skylights above my son’s music studio which contains a lot of professional equipment. Hoping you can help. I have plenty of Perspex Thank you

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21 May

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Stirling - FK8

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we have a bedroom sash window in a listed building that needs the glass replacing. are you the property owner: owner of the property property type: other are you looking for glaziers: yes how many uni...

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13 May

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customer has confirmed they are looking to have their roof repaired on their conservatory. are you the property owner: owner is the repair needed internal or extrernal: external what part of the conse...

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24 Dec

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Broken glass changed in bathroom Are you the property owner: Owner of the property Are you looking for glaziers: Yes Property Type: Semi detached How many units do you do you require: 1 Window What l...

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03 Apr

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02 Dec

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14 Aug

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Boness - EH51

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06 Jun

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my window panes are misting up. i need 6 windows with 6 panes in each replacing are you the property owner: owner of the property are you looking for glaziers: yes how many units do you do you require...

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31 May

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04 Mar

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13 Oct

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Bonnybridge - FK4

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are you the home owner of that property? yes how many windows are you considering replacing? 1 what material do you require, upvc? upvc what colour do you want them to be? white do you require doors i...

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05 Jul

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Grangemouth - FK3

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customer has confirmed they are looking to have their door, window repaired on their conservatory. are you the property owner: owner is the repair needed internal or extrernal: internal & external wha...

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18 Nov

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28 Jul

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12 Jul

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17 Jun

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15 May

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FAQs

Accidents happen, and sometimes windows get broken. And that will lead to you wanting to replace just the glass in your window, rather than the whole frame. Also, as windows get older they can mist up on the inside, which means that the unit has ‘blown’ - so you’ll also need to replace the glass. But how much is it to replace the glass in a window? Luckily, if the frame of your window is in good condition, there’s no need to replace it, and this will reduce the cost. For an installer to fit a new pane of glass in a single glazed window, the average cost is £100, while a replacement double glazed sealed unit will cost an average of £110. Of course, as this is an average, if your window is very large you may spend more, and if your window is very small the price may be less. That's why it’s important to get a range of quotes so you can compare costs and get the best price. If you’re good at DIY, you may feel confident enough to have a go at replacing the glass in your window yourself. In that case, the cost of sealed unit and any other materials you need will cost an average of £57. It’s a significant saving, and if you think you can do it, then give it a try. However, if you’re in any way unsure, it’s best to leave it to the professionals. A window installer will be able to replace the glass in your window in less than an hour. Even though it costs more for a professional to do it, if you get it wrong and have to start over it will cost you more in the long run.

It’s not too difficult to replace the glass in a uPVC window, so if you’re a confident DIYer you could have a go at this yourself. We’ll go through the main steps on how to replace the sealed unit in a uPVC double glazed window:

Using a rubber mallet and a strong pallet knife, remove the beading around the window. You might think they’re part of the frame, but they’re actually separate on the inside of the frame and can be taken out by using pallet knife to prize them out. Start with one of the longest beads first and leave the top bead until last.
Give the glass a little tap to loosen it if it doesn’t come out straight away, then the whole unit should slide out easily. Just make sure it falls towards you and not back out onto the ground below!
Clear any debris that has found its way into the frame with a brush. Add spacers at the bottom of the frame – these could be pieces of plastic.
Get your new sealed unit (make sure you measure the glass before you buy one so you know which size to get) and carefully take it out of the packaging. Look for the British Standard mark – that shows you the bottom of the glass.
Lift the glass into the frame, starting with the bottom first, and make sure that it fits square in the frame before taking the spacers out.
Use a little washing up liquid to spread along the beads to make it easier when you slide them back into the frame. If they simply push and clip back in, you can use something like a block of wood to help you push them in correctly. Put them back in reverse order to how you took them out.

And there you go! If you’re feeling confident you can have a go at replacing the glass in your uPVC window yourself. But if you’ve got any worries, leave it to a window installer who will be able to do it in less than an hour.

Yes, the glass in a double glazed window can be replaced. The glass in a window, or sealed unit to use its proper name, is not permanently attached to your window frames so if it gets damaged but your frames are still intact, there’s no need to replace the whole window. The glass in your double glazed window might need to be replaced due to:

Impact from a stone or other object smashing the glass in a ‘bullseye’ effect
The result of a break-in
Extreme weather or changes in pressure causing a crack
The sealed unit being ‘blown’, meaning that it’s no longer energy efficient due to air leaking out

A lot of window installers will replace the glass in your double glazing for you, but you might need to get quotes from specialist glaziers too. Glaziers deal purely with the glass in windows rather than installing entire frames. It won’t take a professional very long to replace the glass in your window. They will remove the beading from around the window with a pallet knife or chisel, leaving the top one until last to keep the sealed unit stable. Then, they simply lift out the glass carefully and will discuss with you whether the removal of the old sealed unit is included in their quote. Next, they will brush away any dust and debris that’s made its way into the frame and place spacers at the bottom. They will then lift the new glass into the frame, making sure it’s completely square. When they’re happy, they’ll remove the spacers and replace the beading back in reverse order. You’ll notice the replacement glass in your new window straight away as draughts should be eliminated and you’ll be able to see clearly again!

You can only repair blown double glazed windows in the sense that you can replace the sealed unit (the glass part of the window) instead of having to replace the entire window.

When a double glazed window is blown, it means that the seal around the window has failed and is now letting air in and out. Often the first sign that the sealed unit has blown is condensation on the inside of the window, which is annoying since there’s no way to get rid of it! When your sealed unit has blown, you’ll be losing heat out of the window, meaning you could be spending more on your energy bills.

As a temporary fix, you could see if you can buy a misting repair kit online, but the condensation will eventually occur again as the air gets in. The best thing to do is ask a window installer or glazier to replace the sealed unit for you.

It's simple to replace the glass in a window – the specialist will remove the beading around the window, remove the blown glass from your window frame and set it to one side. They will then clean up around the frame before adding spacers in, then fitting the new sealed unit into the frame. They’ll make sure it’s a snug fit before replacing the beading back around the window to secure it.

There's no reason to put off repairing a blown double glazed window since the cost is generally much less than replacing the entire thing. A sealed unit with installation costs an average of £100, whereas a completely new window will cost around £400. You’ll soon notice that it’s less draughty and will be able see out of your window once you’ve had the blown glass replaced.

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