If your windows are starting to mist up, you may be wondering how much life they have left in them or whether it is necessary to actually replace them.
The good news is that modern double-glazed windows can withstand the test of time and are often expected to provide anywhere from 20 to 40 years of security and comfort.
That said, not all double-glazed windows are the same. Many factors can affect how long double-glazing lasts.
In this guide, we walk you through the lifespan differences between each window type. Learn the reasons why double-glazing may fail and get tips on how to make your windows last longer!
What Is Double Glazing?
Double glazing is a type of window finish that uses two panes of glass instead of one. In double-glazed windows, the two panes of glass have gas, such as argon, in between.
The additional layer of gas acts as insulation for maximum thermal retention. Furthermore, integrated trickle vents and acoustic glass improve noise reduction.
Double-glazed windows are weather-tight, energy-efficient, and more secure. Upgrading your windows means you can typically save up to £200 a year. Common double-glazed window types include casement, sash, tilt & turn, and bay windows.
How Long Does Double Glazing Last?
According to the Energy Saving Trust, double-glazed windows have an average lifespan of 20 to 30 years. Moreover, many double-glazed windows can last longer than 35 years with the proper care.
Double-glazed windows are definitely sturdier than single-pane windows, which ordinarily would be expected to last only 15 to 20 years. Because of this, double-glazed windows have become the new standard when it comes to homes in the UK.
Still, you should consider the lifespan differences based on frame material. Many factors can contribute to whether your windows will last longer.
Double-Glazed uPVC Windows
uPVC is one of the most popular materials due to its affordability and versatility. It stands for unplasticized polyvinyl chloride, a durable plastic used for building products.
Unlike timber frames, uPVC is waterproof and rot-resistant. It doesn’t warp, and you don’t have to paint it.
Modern uPVC frames are cheap. Yet, they provide ample insulation without sacrificing aesthetics.
Most uPVC windows come with a 10-year warranty, but the Federation of Master Builders estimates that double-glazed uPVC windows can last 35 years on average, but may lose some insulating capabilities after 25 years.
Double-Glazed Aluminium Windows
Double-glazed aluminium windows on the Wirral are a popular choice due to their longevity. These windows are corrosion-resistant and incredibly durable. Some even have coated finishes that extend the life further.
Aluminium windows are a good option if you’re looking for slim sightlines and lightweight metal. Modern improvements have resulted in aluminium frames with thermal break technology.
Aluminium windows will not become brittle, unlike uPVC windows. They have stronger resistance to harsh weather and UV as well.
Because of this, the average lifespan of double-glazed aluminium windows is 30 to 45 years.
Double-Glazed Timber Windows
Timber windows don’t just give your home character, they also add value to your property.
Double-glazed timber windows are the priciest option. However, they also last the longest. In the right conditions, new timber windows can last up to 60 years.
If you think about it, timber windows have been used in the UK for centuries. This type of window has good thermal resistance. When you pair it with double-glazing, timber can keep your home comfortable all year round.
That said, you should pay attention to the type of wood. Some materials require more maintenance and have shorter lifespans.
Composite Double-Glazed Windows
Composite windows are made from a combination of materials. For instance, a window may have a timber interior and an aluminium exterior.
From a practical standpoint, composite windows allow homeowners to enjoy the best of both materials. You can have windows with the natural look of timber while benefiting from the aluminium’s weather resistance.
Different types of composite windows have varying lifespans.
In general, composite windows can last anywhere from 30 to 50 years. Note that you may need to repaint or weatherproof composite windows every 5 to 10 years as well.
What Factors Affect the Average Lifespan of Double-Glazed Windows?
The type of material you use isn’t the only factor affecting how long a window lasts. Even two homes with the same windows may show differences.
As a homeowner, you should consider these factors before buying double-glazed windows.
Exposure to Weather
The UK weather can be tough on windows.Rain, wind, sunlight, and frost can all cause damage to the double-glazing. What’s more, if you’re living near the ocean, salt in the air can accelerate wear and tear.
As a homeowner, you should carefully select the best material for your circumstances. Consider the weather and ask professionals for advice when needed.
Proper Maintenance
Proper maintenance is the key to longer-lasting windows.
Aside from hiring professionals to maintain your windows, you can also start small habits. A few things you can do are lubricating the hinges or cleaning the frames.
Be sure to regularly check your windows. This way, you can spot small issues and address them before they get worse.
Product Quality
Low-quality products have thinner frames, cheaper hardware, or less effective glazing. Although they may seem cost-effective now, they can break down easily.
Investing in high-quality windows is the best way to ensure longevity. High-quality windows have better seals and more advanced technology. They can even save you on electricity bills in the long run!
Installation Quality
Even if you have windows with the highest quality, they can prematurely fail if not installed correctly.
Poor installation leads to gaps around the frame. These gaps let draught and moisture in. Additionally, they can put unnecessary stress on the whole window frame. Over time, small issues can pile up and affect the seal.
This is why having professional installers is worth the investment. Getting your windows professionally fitted ensures you get the maximum lifespan.
Tips for Extending the Life of Double-Glazed Windows
No window can last forever. Still, there are many things you can do to extend the life of your windows. Here are a few tips.
- Conduct Regular Inspections: Always look for signs of wear and tear on your windows. Check for damaged seals, cracks, or condensation between the glass panes.
- Address Issues ASAP: Small issues can cause further damage to the window. Be sure to replace worn seals before you experience long-term water damage.
- Lubricate: If the window is becoming difficult to open, it’s time to lubricate. You can apply a simple lubricant once a year to keep parts moving.
- Avoid Harsh Chemicals: In most cases, soapy water is enough for cleaning windows. Avoid harsh cleaners or scouring pads to prevent damage to the double-glazing.
- Clear Drainage Channels: Modern windows have small drainage holes that debris can get into. Make sure to clear these drainage channels of dirt, insects, and leaves.
When Should You Replace Double-Glazed Windows?
So, your window has developed some issues. Can you repair it, or have you reached the point where replacement makes more sense? Here are signs it’s time to get new windows.
- Frame Movement: The window frame is shifting or feels loose. If the window is no longer sitting directly on the opening, it’s a sign of deterioration.
- Failed Seals: Window seals naturally degrade ahead of the rest of the window. You can easily replace this to extend the window’s life.
- Condensation: Condensation can form between glass panels in damaged double-glazed windows. This can cause draughts and moisture to enter your home.
- High Energy Bills: Windows improve insulation, which lowers your energy bills. If you notice an increasing bill, it may be a sign that your windows need to be replaced.
- Visible Damage: Cracks, warping, or rotting timber can affect your window’s performance. For your security, it’s best to replace windows with visible damage.
FAB Home Improvements – Your Partner for High-Quality Double Glazing
Double-glazing is one of the best improvements you can make for your home. It can keep your home warmer, improve safety, and reduce your electricity bill.
That said, we know double-glazing requires a significant investment. Having the right supplier can make a big impact on how long the windows last.
FAB Home Improvements helps transform properties in Wirral, North West, and North Wales into energy-efficient homes. We carefully consider every aspect of the installation process to protect your home from the elements and intruders.
At FAB Home Improvements, you’re sure to get top-quality double-glazed windows. Our experienced team is here to make sure every project meets the highest standards.
Let’s discuss your next project. You can reach out to us for a free quotation!
FAQs
Can a Misted Double-Glazed Window Be Repaired?
Yes. In some cases, misted double-glazed windows can be repaired by replacing the seal. However, if the frame is old and damaged, you may need to replace the whole window.
What Type of Double-Glazed Window Lasts the Longest?
Timber and composite windows tend to last the longest. Timber windows, in particular, can last up to 60 years with proper care.
Remember, how long a window lasts is affected by factors like climate and maintenance. Hiring a professional installer can further extend the window’s life.