Let’s start with the basics: a U-value measures how well a material insulates and prevents heat from escaping.
If you’re not familiar with the term, don’t worry—you’re not alone! Unless you’ve spent years working with windows like we have, U-values might feel like technical jargon.
But since they’re often highlighted in window brochures and promotions, we think it’s only fair to share our knowledge and break it down for you.
Let’s decode U-values together, so by the end, you’ll be just as clued-up on them as we are.
Why are U-values Important When it Comes to Window Replacements?
U-values and replacement windows go together, as a window’s U-value measures its insulating performance.
The rule is simple: the lower the U-value, the better the insulation, helping your home stay warmer and more energy-efficient.
On the flip side, a high U-value (also known as thermal transmittance) signals poor insulation, allowing valuable heat to escape and driving up your energy bills.
Comparing U-values Across Different Window Types
It’s no surprise to most people that single-glazed windows offer the poorest thermal performance compared to double or triple glazing.
Single glazing can have a U-value as high as 6.0 W/m²K, providing minimal insulation. In contrast, double-glazed windows typically achieve U-values between 1.2 and 3.7 W/m²K, with current building regulations requiring a minimum of 1.4 W/m²K.
Triple-glazed windows expectedly deliver the highest level of insulation, often achieving U-values below 1.0 W/m²K.
Investing in Energy Efficient Glazing for Lower U-values
Energy-efficient glazing is essential for optimal window function and maintaining high home insulation standards. The key element in this technology is Low-E glass, which has a thin, invisible coating that reflects heat back inside.
When used in double or triple-glazed windows, this technology ensures your home stays warmer during the colder months and cooler during summer, all while helping to lower your energy bills.
Choosing the right energy-efficient glazing requires careful consideration of U-values, as well as factors like privacy, security, and sound insulation to meet your specific needs.
Trademark supplies energy-efficient glazing as a standard feature in all its windows for the reasons discussed: it’s cost-saving, energy-efficient, and improves your everyday comfort.
Feel free to reach out if you’d like any more clarification on window terminology. We’d be happy to guide you through energy rating labels and explain how they work, helping you better understand the thermal properties of your windows.
LOOKING TO REPLACE YOUR WINDOWS?
We have a fantastic range to choose from so whether it’s a modern style or traditional timber effect windows – we are confident that we will have windows to improve any home to give it the finished look with elegance.
LOOKING TO REPLACE YOUR WINDOWS?
We have a fantastic range to choose from so whether it’s a modern style or traditional timber effect windows – we are confident that we will have windows to improve any home to give it the finished look with elegance.
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