INSIGHTS HUB > Trade > When to advise the installation of new windows – 7 signs to look for

When to advise the installation of new windows – 7 signs to look for

January 3, 2023

How often should windows be replaced?

Not a lot of people know that the lifespan of a window tends to average out somewhere between 15 and 20 years.

Of course, those in the trade understand there are a number of factors that can have a big impact on this timeframe. How well they have been made; the quality of the installation process; extreme weather conditions they may have endured; and more.

It’s important to advise customers (or potential customers) on these points, while also making sure they recognise just what signs to look out for if they’re worried their windows are nearing the end of their life. Some are more obvious than others, so it’s always best suggesting they carry out regular inspections as part of general care and maintenance, increasing the frequency of these checks once the 10-year mark has passed.

7 signs that it’s time for new windows

1. Energy bills have steadily increased. Home or building owners will often put a jump in energy bills down to rising gas or electricity prices. But that’s not always the case. They need to be aware that it can often be a sign that their windows are not keeping heat in as effectively as they once were, while simultaneously allowing the colder air in. Less insulation usually equals more central heating, and an unwanted spike in bills. Ask them if the area near to the window is colder than the rest of the room, or if the glass is cold to touch. If it is, advice on new windows should be forthcoming.

2. There is noticeable, consistent leaking. One of the most obvious signs a window is in need of replacing is constant leaking whenever it rains. You’ll have seen it a thousand times; puddles on the sill or on the floor, the wall around the window going damp. Stains may even have started to appear. Extra moisture can turn a building into a breeding ground for mould, so it’s important people understand that immediate action is required once water starts getting in. Repairing the window can be an option – it may be that the seal has suffered slight damage – but if they are almost 15 years old, advising a replacement is likely the most sensible solution.

3. Windows not functioning properly. As windows reach the end of their lifespan they can become difficult to operate; a once smooth opening action replaced by a frustratingly stiff mechanism that requires sheer brute force to use. Not only can this be a real annoyance to homeowners, it also poses a potential health and safety risk if the window concerned is an emergency escape route.

4. Constant condensation. Persistent condensation is a common phenomenon so some people may not realise that it can actually be a tell-tale sign their windows need replacing. Condensation appearing on the outside of a window is generally a sign of good insulation as it shows that heat is not escaping, and warming up the outer pane. While internal condensation is more often than not down to steam from cooking or showering, if it is only appearing on the inside of one window, this could be due to that particular frame experiencing a draught problem. When condensation is materialising between two panes of glass, the seal between the two may have developed a leak.

5. Soundproofing. It’s always worth asking home or building owners if outdoor noises like traffic or dogs barking have recently started sounding a lot louder than usual from inside. They might not realise their property’s windows could be the cause. Explain how it could be down to the frame, the glass, damage to the sealing. VEKA’s modern, high-quality windows are renowned for their thermal performance, designed to effectively absorb sound waves in order to provide increased thermal insulation for a quieter, more serene indoor environment.

6. Tired looking appearance. We won’t need to tell you this, but one of the most obvious indicators a window is nearing the end of its lifespan is the way it looks. Windows more than a decade old can begin to appear dated or misshapen. Some frames will start to chip away or discolour, while light may even begin to shine through gaps that have emerged. It’s not unusual for cracks or chips to appear on the actual glass. VEKA’s highly durable UPVC frames won’t chip, rot or crack, not to mention they’re extremely pleasing on the eye.

7. Single pane windows need an upgrade. We still come across many older buildings where single pane windows remain in use. Some people simply don’t realise the huge benefits they are missing out on by not upgrading to far more energy efficient double or triple glazing.


VEKA specialises in manufacturing a selection of the most high-quality, energy efficient windows frames in the world today. From casement windows to fully reversible windows, our diverse range of products bring style and functionality to any project.
The VEKA installer programme takes our trusted service a step further, providing installers with a direct link to businesses, and customers with a guarantee of expert fitters who share the same VEKA values.
As part of our dedicated support package, we provide fabricators and Independent Network installers with a BSI notified and BFRC certified window and door energy performance calculator. Not only that, we also offer fabricators an indicative in-house testing facility for all of our windows and doors, so they know our products are of the highest quality.