How long do uPVC windows last?
The most important thing is to choose products and producers already at the stage of construction, for which we can be sure of high product quality, as well as after-sales service – including servicing and a clear guarantee system.
If the investor chooses a high-quality product, nothing should happen to it for the first 10 or even 20 years. Why do investors have problems with windows much sooner? Find out the most frequent reasons for failures.
Incorrect installation
We emphasise and educate investors that correct, i.e. tight assembly of the window is as important as a good product.
Incorrectly selected product
In the era of Internet shopping, we are often accustomed to making decisions solely on the basis of friends’ recommendations or information found on the Internet. Window joinery for the house is often an expense of tens of thousands of zlotys, so it is important that it is well thought out and tailored to your needs. Example: With frequent opening and use of traditional balcony doors, it is better to use a sliding system – smooth opening will extend the life of the hardware, and thus the product.
Use contrary to instructions
Every product you buy comes with a document that tells you how to use it properly. When buying new home appliances for the house, investors often reach for manuals, unfortunately, they forget about it in the case of window joinery, which is encouraged by manufacturers. The instruction manual also contains a lot of useful information concerning maintenance or recommended cleaning agents.
Inadequate or no maintenance
If a window is improperly maintained, cleaned with inappropriate means or used, it may also fail on various levels, which we will write about in more detail in the next item. What should be remembered by an investor who wants his windows to maintain all parameters for as long as possible? Maintenance should be performed once every 12 months; the manufacturers recommend that it should be done by a qualified service technician so that the right to a prolonged warranty is preserved (in the case of Aimwin windows – even 7 years). If you decide to carry out the work yourself, always pay attention to the recommendations included in the instruction manual and use only products specified by the manufacturer for all work.
Breakdowns that may occur if the product is used incorrectly
If a window is improperly maintained, cleaned with unsuitable products or used, it may also fail on various levels.
Veneer
Already during the installation of the window, it is very important to remove the protective film well and do it immediately after the work is completed by professionals. If the fitters do not do it themselves, the investor should make sure to do it himself. Why is this so important? Otherwise, the shade of the veneer may change and fade. What if, unfortunately, this has already happened? Here, agents for moistening and refreshing the colour prove invaluable.
Glazing packets
Incorrect use of external and internal blinds can cause failure. If the external blind is lowered halfway for a longer period of time and the temperature difference between the shielded and the sunlit part of the window is so great that tension may develop. The result of this situation may even be a cracked window pane.
Fittings
This is one of the basic elements that should be taken care of in order for the window to work properly. Unclean, unmaintained fittings will work harder and harder (and here it is worth emphasising that the window is the element which works all the time), which in the end may lead to breaking the cassette from the espagnolette. That is why, among others, it is so important that the annual maintenance is performed by qualified professionals.
Seals
Many investors forget that taking into account the time of year, it is necessary to loosen the summer pressure in summer and tighten the winter pressure in winter. If the investor does not use this function, the gasket may deform (crush) under the influence of heat and in winter, when windows shrink under the influence of lower temperatures, blows may occur.
What changes may occur for reasons beyond the control of the investor?
Of course, as the product is used, despite proper maintenance, changes resulting from the specifics of the product may also occur. However, these are not failures that affect the functioning of the window.
Casings – Longevity and Aesthetics
Over time, white window casings may fade or slightly change their original colour, impacting their aesthetic appeal. To mitigate this, homeowners might consider selecting casings in alternative, darker colours, which typically show less noticeable discoloration. Alternatively, replacing faded casings is relatively inexpensive, generally costing only a few zlotys per casing, ensuring windows maintain their attractive appearance.
Gas Between Glazing Units – Performance and Durability
The gas (typically argon) used between glazing units in PVC windows is designed to improve thermal insulation and reduce heat loss. However, over several years, the gas might gradually lose its insulating properties and slowly escape. This is a normal characteristic inherent to PVC windows and cannot be completely prevented. Fortunately, this gradual loss typically goes unnoticed by the user and does not pose any safety risks or substantial performance issues.
How to Ensure Longevity and Optimal Performance of PVC Windows?
When initially selecting PVC windows, several important factors should be considered to guarantee their long-term performance and durability. Firstly, verify the manufacturer’s reputation to ensure product reliability and quality standards. Secondly, examine the warranty period and confirm whether comprehensive service support and maintenance assistance are provided.
Routine annual inspections and regular maintenance are crucial in extending the lifespan of PVC windows. Proper maintenance typically involves cleaning, lubrication of fittings and seals, and inspecting for any potential signs of wear or damage. Adhering to these recommendations will ensure your PVC windows continue to deliver reliable performance, aesthetic appeal, and comfort for many years to come.
❓ FAQ – How Long Do uPVC Windows Last?
1. How many years do uPVC windows typically last?
Most uPVC windows last 20 to 25 years. With proper care and professional installation, they can reach 30 years or more.
2. Can uPVC windows last 40 years?
In rare cases, high-end uPVC windows in mild climates may last up to 35–40 years, but this is not the norm. Regular maintenance is key.
3. What reduces the lifespan of uPVC windows?
Factors like poor installation, extreme weather, direct UV exposure, and lack of maintenance can all shorten their life.
4. How do I know if my uPVC windows need replacing?
If you notice drafts, fog between glass panes, difficulty opening, or discoloration, it’s probably time to consider replacement.
5. Do uPVC windows need maintenance?
Yes – to extend their life, clean the frames regularly and lubricate hinges and seals at least once a year.
6. Is it better to repair or replace old uPVC windows?
If only hardware like locks or hinges is failing, repairs may be enough. But for thermal efficiency loss or frame damage, replacement is usually more cost-effective.
7. Are modern uPVC windows more durable than older ones?
Definitely. Modern uPVC technology has improved significantly, offering better UV resistance, double or triple glazing, and stronger frames.
8. How do uPVC windows compare to aluminium or timber in terms of longevity?
Aluminium can last 30–45 years, and treated timber around 30 years, but uPVC is often more cost-effective and low-maintenance in the long run.
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