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 Southampton

Find Replacement Glass (Glazing) Prices in Southampton

Replacement Glass (Glazing) in Southampton

Are you seeking Glaziers in Southampton? Our network of glaziers can assist with your job. All of our Window Installer in Southampton are inspected so you can see local honest reviews, when business was started, ratings, approval and price permitting you to make the right decision on who to hire. Allow us take the problem out of finding as much as 4 pros for your Glaziers project.

Glaziers reduced, shape and also mount glass for a variety of factors consisting of home windows, showers and also mirrors. It's a really specialist trade and shouldn't be attempted by an amateur.

Glaziers can be needed for both domestic as well as business glass setups and also whatever your glazing requires; you'll be able to find assistance from these qualified tradesmen.

Why would certainly I require a glazier?

One of the most preferred reasons for needing a glazier would certainly be to replace a smashed window pane. Glaziers will certainly have the ability to reduce and form the pane swiftly as well as successfully to improve your house's safety and security and alleviate your mind.

We will provide approximately 4 Glaziers pros in your area, who will use quotes for the work you want done. You'll receive a property visit from specialists in Southampton who'll help you to select the ideal Glaziers for your house prior to carrying out the setup. Enter your postcode to start searching now.

Average Glaziers cost in Southampton

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 Southampton, as reported by local LeadsDoWork members.

Glaziers installation cost in Southampton 2025

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

Time frame: 1 day

Glaziers searches in April 2025

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Glaziers Projects in Southampton in March 2025

10,571

Requests for quotations in Southampton in March 2025

0

Requests for Glaziers quotations in Southampton in March 2025. 0% change from February 2025.

0

Requests for Glaziers quotations in Hampshire in March 2025. 0% change from February 2025.

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

Glaziers searches in cities and towns near Southampton March 2025

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Southampton

The main port city of Southampton is located on the southern shoreline in the county of Hampshire, having a population of 239,700. While many Georgian architecture remains, just about all was flattened in the World War 2 bombings, which levelled the city. With much of the housing backdating to the 1950s and sixties there's lots of work on offer for contractors to have buildings updated.

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06 Apr

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Southampton - SO19

Enquiry from: Kane S

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are you the property owner: owner of the property what level of service do you require: repair/glass only property type: terrace how many windows do you need: 2-3 windows do you require doors: none i...

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FAQs

Whether you need toughened glass in your windows depends on where the windows are in your home or business. Toughened glass is sometimes referred to as tempered or safety glass, and it just means it’s stronger than the standard glass that’s usually offered with double glazed windows. So how do you know if you need it?

Toughened glass is useful in areas of your home where you might come into contact with the windows if you were to trip and fall. If you put your hands out to steady yourself on standard glass the chances are it would break into large sharp pieces with jagged edges. Of course, this means that you could seriously cut yourself if this were to happen. With toughened glass, the structure of the glass is changed so that if it breaks it shatters into lots of tiny pieces, minimising the risk to you if you were to fall on it.

You might want to use toughened glass in patio doors, low windows or frames next to doors. It just means that you will be safer if the unlikely happens and you or a family member falls through the glass. There are certain requirements through Building Regulations with windows at a certain level, but any reputable window installer should be able to go through these with you if you need to replace your windows with toughened glass. The regulations will only apply to new windows – there's no need to switch your windows to toughened glass early, but when you do come to replace them you’ll need to make sure they meet the standard.

You can end up with a cracked glass window in a few ways. The most common one is when a rogue stone in the lawnmower hits the window or someone’s cricket or tennis game goes wrong and you end up with a ball through the window. Youi often end up with a ‘bullseye’ type crack that expands out from the point of impact. You can also get pressure and stress cracks from intense fluctuations in pressure and temperature. Unfortunately, there’s no way you can permanently fix cracked windows without replacing the entire sealed unit. An installer can replace a cracked glass window in less than an hour simply by taking out the sealed unit (the two panes of glass in double glazed windows) and replacing it with a new one. It costs an average of £110, but you could try to do it yourself for around £55. But what if you can’t get an installer to fix your window straight away? There is a DIY method you could try. As a temporary fix for your glass window, you can use a solvent-based adhesive like epoxy which will keep the glass intact and prevent further damage. You’ll also need:

Washing up liquid
Glass cleaner
A lint-free cloth or rag
A putty knife
A paper plate
Acetone

First, you’ll want to clean the glass using the washing up liquid and a damp cloth to remove any dust or oils. Leave it for a few minutes to dry, then create a mixture of epoxy by combining the hardener and the resin and stirring it on a paper plate. Using the putty knife, spread the mixture on the cracks, making sure you press gently to fill them. Leave it for at least 5 minutes to dry, then get rid of any excess by using some acetone on a dry cloth. Clean the window using some glass cleaner and another dry cloth, and you should have a temporary fix!

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.

If the glass in your window has been damaged, you might only need to replace that rather than your whole window frame. Common reasons for needing to replace the glass in your window include:

The glass has smashed from an impact such as a stone hitting it from a lawnmower
You have been broken into and suspects used the window to gain entry
The glass has blown (lost its airtightness) from constant water build-up around the seals, which is common in bathrooms
Extreme weather or pressure changes have caused a crack

If your frames are still intact and there’s nothing wrong with your window’s locks or trims, there’s no reason why you can’t just replace the sealed unit in your window. To help with the quotation process, a window installer may ask you to measure the glass for your window replacement. It’s pretty simple to just measure the sealed unit inside your window. There are just 3 steps you need to take:

Including the beading (the plastic and rubber seals around the windows that can be removed), measure the width of the window frame.
Do the same for the height of the window, making sure you include the beading.
Then, take 10mm off each measurement, and you have the approximate size of your glass.

A reputable window installer will still make their own measurements before confirming the size of the glass in your window and going ahead and ordering the replacement. Make sure you get a range of quotes from local and national installers so you can compare the price and their quotation process.

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