Last Updated on 10 January 2025 by Josh Lucas
How Long Does Double Glazing Last?
Typically, double glazing can last 20 to 35 years, depending on the quality of materials, installation, and maintenance.
If you’ve ever wondered, “How long does double glazing last?”, you’re not alone.
For many homeowners, double glazing isn’t just a practical solution for energy efficiency—it’s an investment in their property’s long-term comfort, aesthetics, and value.
Choosing the right windows means understanding how long they’ll last and what factors contribute to their durability.
In this comprehensive guide, we’ll uncover the typical lifespan of double glazing, delve into the factors that influence its longevity, and share expert tips on maintenance.
Whether you’re looking to extend the life of your existing windows or considering an upgrade, this article is packed with everything you need to make informed decisions about your home improvements.
Plus, we’ll provide practical advice on recognising when it’s time for a replacement and how to choose the best products for your needs.
Key Points We’ll Cover:
- What is the typical lifespan of double-glazed windows?
- The factors that affect how long double glazing lasts.
- Signs your double glazing may need replacing.
- How to maximise the lifespan of your windows.
- FAQs about double glazing.
What is the Typical Lifespan of Double-Glazed Windows?
The average double-glazed window lasts around 20-35 years, depending on the quality of the materials and the installation.
uPVC Frames
Durable, energy-efficient, and low-maintenance, uPVC frames are the go-to choice for many homeowners.
These frames can typically last 20-25 years, but with high-quality manufacturing and proper care, they can last even longer.
Modern uPVC frames are designed to resist discolouration and warping while offering excellent insulation to reduce energy costs.
At GFD Homes, our uPVC windows feature advanced multi-chamber designs for added durability and thermal efficiency.
Aluminium Frames
Known for their sleek aesthetics and exceptional strength, aluminium frames can last up to 35 years or more.
Their increased resistance to corrosion and warping makes them ideal for areas exposed to harsh weather conditions.
Additionally, aluminium frames are lightweight yet incredibly robust, providing slim sightlines that maximise natural light.
At GFD Homes, our aluminium frames are thermally broken to enhance energy efficiency, ensuring they are as practical as they are stylish.
With proper care and maintenance, premium products can push their lifespan beyond 35 years, making them a worthwhile investment.
Factors That Affect How Long Double Glazing Lasts
When it comes to how long double glazing lasts there are a few factors that can impact it over the course of its lifetime.
Quality of Materials
High-quality double-glazed units use durable frames and robust seals.
Aluminium frames, for example, are naturally resistant to corrosion and can withstand harsh weather conditions without warping.
uPVC frames, on the other hand, are prized for their thermal efficiency and affordability.
Investing in premium-grade materials ensures your double glazing will provide better insulation and last significantly longer.
Installation
Even the best materials won’t last if installed poorly.
Professional installation ensures airtight seals to reduce the risk of condensation and ensures that frames are correctly aligned to prevent drafts and structural issues.
Improper installation often leads to quicker wear and tear, so it’s essential to choose experienced installers like those at GFD Homes.
Environmental Conditions
Exposure to extreme weather can wear down seals and frames faster.
For instance, homes near the coast may experience accelerated corrosion due to salty air, while areas with high humidity or heavy rainfall may see seals deteriorate faster.
Modern materials like thermally broken aluminium can resist such damage effectively, making them ideal for varied climates.
Maintenance
Regular cleaning and inspections are key to maintaining your double glazing.
Seals should be checked annually for cracks or gaps, and frames should be cleaned with non-abrasive materials to prevent build-up that could cause long-term damage.
Ignoring maintenance can lead to reduced energy efficiency and premature failure of the glazing unit.
Regular cleaning and inspections are key to maximising the lifespan of your purchase.
Signs Your Double Glazing May Need Replacing
If you think it may be time to replace your existing double glazing, there are a few telltale signs that you need to consider replacing them,
Condensation Between the Panes
If you find that your double glazing has condensation between the panes, the seal has failed, compromising the insulating properties and overall performance of your double glazing.
Draughts or Cold Spots
If you’re feeling draughts in rooms where the double glazing is or cold spots on the double glazing, this can be a sign that the glazing or frames are no longer effective at insulation.
Discolouration or Warping
UV exposure can cause uPVC to yellow and the frames to deform over time, leaving them brittle and significantly reducing their effectiveness.
Difficulty Opening/Closing
You may have noticed over time that the window has become harder to open and close. This can be a sign that the frames have warped or become misaligned, which may hinder functionality in all aspects.
Increased Energy Bills
Inefficient windows often lead to higher heating costs as they fail to insulate your home effectively.
If you notice any of these issues, it’s worth considering a replacement to maintain energy efficiency and comfort.
How to Maximise the Lifespan of Your Double Glazing
When it comes to maximising the lifespan of your double glazing it’s best to keep up with regular maintenance and checks throughout the year.
Seasonal Maintenance Checklist
Spring
Clean the glass thoroughly to remove dirt and grime that could weaken seals over time. Inspect the window seals for any visible cracks or damage and address minor issues promptly.
Summer
Lubricate all moving parts, including hinges and locks, to prevent them from becoming stiff due to heat exposure. Check for any warping in frames caused by high temperatures and ensure all mechanisms are functioning smoothly.
Autumn
Examine the frames for any signs of wear or damage caused by fluctuating temperatures or heavy rains. Ensure drainage channels are clear to avoid water pooling around the frames.
Winter
Inspect for drafts or condensation, particularly during cold spells. Ensure that seals remain intact to keep your home warm and energy-efficient. Consider applying additional insulation where necessary to enhance thermal performance.
Best Practices for Maintaining Your Double Glazing
Use the Right Cleaning Products
Avoid harsh chemicals, as they can degrade the seals or corrode frames. Instead, use a mild soap solution and a soft cloth to clean the glass and frames without causing damage.
Protect Against Extreme Conditions
Install window coverings like blinds or UV-resistant coatings to shield your double glazing from excessive sunlight, which can weaken seals and fade frames over time. For aluminium frames, consider powder-coated finishes to enhance durability.
Regular Inspections
Conduct an annual inspection to check for minor issues such as loosening of frames, wear on seals, or difficulty in opening and closing. Early detection and timely repairs can extend the lifespan of your double glazing significantly. An annual inspection can catch minor issues before they become costly repairs.
Make the Most of Your Double Glazing With GFD Homes Today
Double glazing is a long-term investment, and with the right care, it can provide comfort, energy efficiency, and value for decades.
If you’re considering replacing or upgrading your windows, don’t wait until issues arise, act now and call our expert team on 01642 309 576 or get an instant quote online at GFD Homes.
Our friendly professionals are here to help you choose the perfect solution for your home!
FAQs About Double Glazing
How much do double-glazed windows cost?
The cost of double glazing varies depending on the style, materials, and size. On average, homeowners in the UK spend between £400-600 per window. For tailored solutions, GFD Homes offers competitive pricing with premium quality.
Can you install double glazing yourself?
While it’s possible, professional installation ensures proper sealing and maximises energy efficiency, saving you money in the long run.
How long should double glazing last?
With quality materials and good care, double-glazed windows typically last 20-35 years or more.
What are the benefits of upgrading to modern double glazing?
Modern double glazing offers enhanced thermal insulation, reducing your energy bills and keeping your home comfortable year-round.
It also can improve noise reduction, increase security with tougher glass options, and boost your property’s kerb appeal. Additionally, modern materials like thermally broken aluminium and advanced uPVC designs offer superior durability.
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- The Benefits of an Aluminium Window
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