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How Long Does Double Glazing Last?

For homeowners considering upgrades or simply exploring their current installations, the longevity of double glazing in windows and doors is a crucial question. At KJM, we recognise the importance of this issue, as the durability of double glazing significantly affects both the comfort and cost effectiveness of your home.

Double glazing involves two layers of glass with a space between them, which is usually filled with an inert gas like argon. This design aims to create a better barrier against outside temperatures compared to single glazing, leading not only to enhanced insulation but also to reduced energy bills and better noise control.

Expected Lifespan

The expected lifespan of double glazing is generally around 20 to 35 years. However, several factors influence this longevity including the quality of materials used, the installation process, and exposure to external elements. Furthermore, advancements in glazing technology and frame materials have contributed significantly to extending the life expectancy of these units.

High quality double glazing, when installed correctly, seals the unit adequately, preventing moisture and air from entering between the panes. This helps to maintain its insulating properties throughout its service life.

Factors Affecting Durability

Quality of Materials

Choosing double glazed units with high quality frames made from uPVC, timber, or aluminium can drastically influence their lifespan. The quality of the glass and the gas used for filling also plays an essential role in determining their longevity and performance.

Installation Standards

Proper installation by certified professionals is crucial to ensure that the double glazed units function optimally. Any failure in installation can lead to issues such as condensation between panes, which can significantly diminish the unit’s effectiveness and lifespan.

External Environment

Exposure to harsh weather conditions, such as direct sunlight, heavy rain, and freezing temperatures, can test the resilience of double glazing. Windows facing south or west tend to endure more intense sun exposure, potentially leading to quicker degradation.

Maintenance Tips for Extending Life

Regular maintenance can go a long way in extending the life of your double glazing. Here are a few tips:

1. Regular cleaning of both the glass and frames helps prevent the build up of debris which can degrade the material over time.

2. Inspect the seals and gaskets annually to ensure they are intact; replace them if you see any signs of deterioration, as broken seals can lead to moisture ingress.

3. Ensure that the drainage holes are clear to prevent water build up, which can lead to moisture damage.

4. Locking mechanisms and hinges normally benefit from lubrication. Its is always wise to follows manufacturers recommendations.

When to Consider Replacement

If your double glazing shows signs of wear such as draughts, condensation between panes, or visible damage to frames, it might be time to consider replacement. Often, replacing ageing or underperforming double glazing can be a cost effective move thanks to the energy savings provided by modern, more efficient units.

KJM invites you to learn more about your options for double glazing and how you might benefit from newer technologies and materials available today. If the age or performance of your current installations concerns you, get a quote from us for potential replacements. Upgrading could not only enhance your comfort but also increase the value of your property. If you have any questions or need advice on your specific circumstances, please feel free to get in touch with our expert team. We’re here to ensure your home remains a sanctuary of comfort and efficiency throughout the years.

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Mark Pearce

With over four decades in the glazing industry, Mark Pearce has been at the heart of KJM Windows & Conservatories since 1983. Starting as a building labourer, he quickly rose through the ranks, working as a window and door installer from 1984, a factory operator manufacturing windows later that year, factory manager in 1992, and joining the sales team in 1994. Becoming a Director in 2002, and finally, the sole owner in 2010, Mark Pearce is truly a double glazing expert and has led KJM to become a leading supplier of high-quality windows, doors, and conservatories across Andover and the South of England.

Mark Pearce is a highly experienced specialist in the double glazing industry, having built his knowledge from the ground up through hands-on experience in installation, manufacturing, sales, and business management. Beyond his role at KJM, Mark is a keen blogger, writer, and traveller, often sharing insights on the latest innovations in the home improvement industry.