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Double glazing vs Triple glazing – should you upgrade?

With now consistent harsh winter lows mixed with the hottest temperature record being broken in 2022, it’s safe to say the UK has had dramatic fluctuations in weather in the past few years. Whether or not your single- or double-glazed windows need to be replaced, is it worth upgrading to triple glazing? and is it really worth the money? Let’s take a closer look and find out

What is triple glazing?


A triple glazed unit features 3 layers of glass, with the gaps between them being filled with a vacuum or argon gas. These spaces contribute to the window’s ability to prevent heat loss and retain the heat in the home.

Triple glazing has become “the norm” throughout Europe especially in Scandinavian countries that
experience harsh winters conditions. Over the last 5 years the UK has seen Triple Glazing popularity risen dramatically for the same reason. In turn with the extra pane of glass also make your new windows more sound proofed, as well as thermally beneficial.

Energy Efficiency

While the insulated layer in double glazed windows provides good protection from the elements, the extra layer in triple glazing gives it the edge. Upgrading from single to A-rated double glazing can save an average of £160 per year – these savings can increase further with triple glazing.

At Greenoak Concept & Design Ltd, we offer triple glazing that boasts an impressive A+ Window Energy Rating (WER). The average U-value (measuring a window’s ability to prevent heat loss) of 1.2 Wm2K and triple glazed is an impressive 0.8Wm2K.


The insulated layer in windows doesn’t only help energy efficiency, it also helps keep noise pollution out of the home. This reduction in noise is perfect for homes near a busy road or neighbourhood. The additional pane of glass, along with an extra insulated layer, sees triple glazing take this round.


Various factors contribute to the cost of the windows, including which style of windows such as casement or sliding sash you decide on. As more materials are required to manufacture triple glazing windows, they often cost more at the outset than a double-glazed equivalent. However, savings on heating bills and the fact that triple glazing can add value to your home still makes triple glazing a worthwhile investment.


Intruders often consider the windows as the home’s primary weakness. It’s difficult to break a double-glazed window but the additional pane of glass makes the triple glazing considerably more difficult to penetrate.

However, as with the other points, it’s all down to the quality of the window. Make sure that the windows come with a lengthy guarantee, and they are sourced from a trusted and well-reviewed glazing company like Greenoak Concept & Design Ltd.

Pros and Cons of triple glazing

Don’t let the cost deter you from considering triple glazing in your home Greenoak Concept & Design Ltd options to allow you to make your dream home a reality. Chat to a member of our team for more details.

Reliable windows and doors across Essex.

Greenoak Concept & Design don’t just offer double and triple glazed windows. We also offer a wide variety of high-quality home improvement products including doors, Insulation Tiled Conservatory Roofs (Supalite) and Insulated Cladding (HardiePlank). We have a passion for providing outstanding customer service and improving homes throughout the region.

For more information on any of our products and services, contact us online or visit one of our showrooms.

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Greenoak Concept & Design have been raising the standards for more than 10 years.

More about us: We’re an independent Essex-based specialists in high quality UPVC Windows, Doors, Tiled Conservatory Roofing, Wall Cladding, and Fascias, Soffits and Guttering.


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