When replacing your residence's windows you don't necessarily need to complete the whole property. Occasionally you might only require to have a single window changed, maybe due to a busted pane or for updating to double glazing.
It's common for lots of people to change simply one double glazed window. One reason that individuals intend to change one window is that the sealed device inside has actually failed. You'll recognize if this has actually taken place since you'll be able to see condensation on the within glass, which gets irritating since you can not clean it away. In this case, you can pick to just change the covered device or the whole frame, which you might want to do if it's looking past its finest.
When you're replacing just one double glazed window, if you understand the brand of your current windows you can ask your installer if they can source the very same ones. This will help to keep them looking as comparable as feasible, although if your existing windows are older you may notice some discolouration on the outside compared to the brand-new one, and also locks and also trickle vents might look different.
Replacing just one double glazed window shouldn't take a certified window fitter long, and also might cost as low as ₤ 300. It's worth keeping in mind that all substitute windows need to be certified that they've been installed to meet building regulations, so you'll require to relate to your local building control officer that will certainly come as well as inspect the work after that provide a certificate. If you ask an installer who is signed up with a self-certification scheme (like FENSA, CERTAS) to fit the window for you, they can issue the certificate themselves when they have actually completed the job.
We will provide up to four Window Installer pros in your area, that will offer quotations for the work you want done. You'll get a home visit from specialists in Magherafelt that'll aid you to choose the appropriate uPVC Single Window for your home before executing the fitting. Enter your postcode to start browsing now.
The typical cost of uPVC single window is around £300. Costs fluctuate based on the materials and the organisation used. The upper price range can be as high as £400. The material costs are in most cases around £110
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| Labour cost | £180 | |
| Material cost | £110 | |
| Waste removal | £10 |
Requests for quotations in Magherafelt in May 2026
Requests for uPVC Single Window quotations in Magherafelt in May 2026. 0% change from April 2026.
Requests for uPVC Single Window quotations in County Londonderry in May 2026. 0% change from April 2026.
Magherafelt - BT45
Enquiry from: Frances F
Start Date: Immediate
What best describes your living situation? - Homeowner - Sole. How many windows are you considering replacing? - 1. What material do you require, UPVC? - upvc. What colour do you want them to be? - wh...
Maghera - BT46
Enquiry from: ELIZABETH G
Start Date: Immediate
Homeowner 2+ windows UPVC Supplied and fitted Please contact to appoint Are you the property owner: Owner of the property What level of service do you require: Supply and installation of full unit...
Maghera - BT46
Enquiry from: Elizabeth G
Start Date: Immediate
Bathroom window in oak
Maghera - BT46
Enquiry from: Natasha N
Start Date: 1 to 3 months
At the minute we have window about 8ft wide want to go out about 3ft or as much as we can Are you the property owner: Owner of the property How many windows do you need: 1 Property Type: Semi detache...
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Most window installers will be able to provide you with one double glazed window and fit it for you. If you’re replacing one double glazed window in your home, ask them to try and source the same windows that you already have or find one that’s very similar. Externally, you probably won’t be able to notice the difference, but if your existing windows are very old there may be some exterior discolouration and the locks and handles might look slightly different.
If you want one double glazed window so you can fit it yourself, there are lots of online companies that can supply you with one window. However, window fitting is a skilled trade and you might want to consider whether you have the right tools and experience to fit it yourself. Of course, you’ll save money on installation costs, but if something goes wrong, you might end up shelling out to get it fixed anyway.
The other thing to consider is that any replacement windows need to be certified that they meet Building Regulations. If you fit the double glazed window yourself, you’ll need to apply to your local council building control officer to get a certificate that confirms that you fitted the window within the regulations. You’ll have to pay a fee for this, and it will be even more expensive if Building Control say that the window hasn’t been fitted within the regulations and you have to start again.
The alternative is to ask a reputable window installer that is registered with a self-certification scheme, like FENSA, to install the window. That means that they can self-certify that the window meets building regulations once they’ve finished the installation.
Unfortunately, you can’t fix the glass on one side of a double glazed window. That’s because they’re sealed units – once one pane of glass is broken, that will break the seal and its thermal insulation properties will be lost.
The good news is that if your window frame is still looking great, there’s no need to replace that. You can simply replace the glass in the window, which will cost much less. You can look to spend around £250 on a sealed unit, whereas a whole replacement single window may cost up to £600.
When an installer comes to replace the glass in your double glazed window, they will survey the inside and outside of your home around the window, then move any furniture by the window so they’ve got access. They should then pop a dust sheet down to stop any debris from getting on your floor.
Then, the installer will carefully remove the beads from the frame. They will then lift the glass out of the frame and put it somewhere safe before cleaning out all of the dust and any debris that has found its way into the frame. Using spacers at the bottom of the frame, the installer will make sure that the sealed unit is square in the frame to get a good fit. Once they’re happy, they will replace the beading and make sure it looks perfect before cleaning up their tools.
You could have a go at replacing the glass on a double glazed window yourself, but it’s not recommended. Leave it to the professionals who will know exactly what to do and will be able to do it quickly and safely.
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