uPVC Windows: How Long Do They Last and When Should You Replace Them?

uPVC Windows: How Long Do They Last and When Should You Replace Them?

uPVC windows are a popular choice among homeowners, and it’s easy to see why when you consider all the benefits you can enjoy.

Not only do new windows look great and give your home a fresh new look, but they also offer excellent energy efficiency and sound-proofing qualities.

uPVC windows are also relatively cost-effective, especially compared with other frame materials; but even as the more affordable option, new windows still represent a significant investment for your home, so you want to be sure it’s an investment that will last. 

How long do uPVC windows last? 

The good news is that providing your windows are of a good quality and installed correctly, you can enjoy them for years to come.

Typically, uPVC windows will last around 20 years, though that could vary between 10 and 35 years, depending on the quality of frames and installation.

There’s very little upkeep required either. With just a regular wipe down with warm, soapy water, you can keep your frames looking good as new for years. 

When do my windows need replacing? 

It’s not always easy to tell if your windows need replacing as damage to the window frames or glass will not always be apparent.

But there are a few tell-tale signs to watch out for.

Visible damage

The most obvious issue with your window is visible damage, either to the frame or the glass. Damage to the frame or glass will compromise both the security and thermal efficiency of your windows and should be repaired or replaced as soon as possible. 

Mist between the panes 

Mist, or condensation between the panes of glass is a sure sign that your double-glazing unit has failed. This is caused by an air gap in the frame, allowing air to enter and condense between the two panes of glass. 


Over time, weather conditions cause your window frames to expand and contract which can warp the frame, leading to gaps appearing.

Although not always noticeable, you may feel a draught when sitting close to your window. This is a sign that the frame or the seal has become damaged and is allowing air to enter your home.  

Unexplained increase in heating costs 

Whilst you may not be able to see the damage, you will likely start to notice it in your energy bills.

Gaps in the window frame will cause the heat to escape from your property, leading to an increase in fuel costs.

To check your windows for unidentified draughts, run your hand around the edge of the frames. You could also light a candle and hold the frame around the edge; where the flame moves is where the draught is coming from. 

Water leaking through the frames 

As well as draughts, damaged frames will also allow water to enter your home.

If you can spot water leaking through the frame, it’s likely it’s damaged and will need to be replaced. 

In some cases, damage to your windows can be repaired.

If you have spotted a problem with the windows in your home in Staffordshire, don’t worry – send us a message with the problem and we’ll see how we can help and look to have the problem repaired.

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