Good window insulation is essential to guarantee superior energy performance, maximum comfort for the occupants and significant savings on heating costs! While double-glazing is the benchmark for new homes or those with newly insulated windows, triple-glazing is becoming increasingly popular despite its high cost. What is triple glazing and what are its advantages?

Why Opt for Triple Glazing? 5 Benefits

Triple-glazing provides absolute thermal insulation, considerably reducing heat loss and heating consumption. It is therefore particularly useful for low-energy homes and those located in colder regions. But that’s not its only advantage! Still hesitating to take the plunge? Here are 5 good reasons why.

1. Excellent thermal insulation

The insulating qualities of glazing are not linked to the glass itself but to the argon or krypton gas captured between its different layers. So, while double glazing has two panes of glass and a layer of gas, triple glazing has three panes of glass (4 to 6 mm thick) and two spaces filled with gas. By comparison, quality double-glazing has a thermal insulation coefficient of 1.2, while triple-glazing scores 0.6. The lower the figure, the lower the heat loss.

2. Exceptional acoustic comfort

For optimum soundproofing against outside noise, you can choose to add insulating laminate to your double glazing or opt for triple glazing. Whether you live in the center of town or are often bothered by noisy neighbors, the generous thickness of triple-glazed windows perfectly filters out disturbing sounds so that you can enjoy a quiet environment. Your home becomes a soothing bubble of silence!

3. Security against break-ins

Much thicker than simple glazing, it is a perfect deterrent to burglary attempts and acts of vandalism. As the anti-burglary glazing of choice, it protects your home from ill-intentioned intruders.

4. Limited heat in summer

In regions where the summer heat can be overwhelming, triple-glazing is the perfect solution! While its greater thickness helps prevent heat loss, it also perfectly filters out the heat from the sun’s rays to limit its impact on a home’s temperature rise. In hot regions with scorching summers and mild winters, triple-glazing can be a practical way to reduce the effects of the intense summer sun while enjoying the gentle warmth of winter days.

5. An excellent complement to double glazing

In winter, the sun’s heat naturally warms a home, reducing the need for heating. However, the thickness of triple glazing filters the sun’s rays, reducing their heating effect in both winter and summer. While this may be advantageous in warmer regions, where winters are mild and summers overheated, it is not necessarily so in regions where winters are harsh and summers temperate. For these regions, combining triple- and double-glazing on windows is advisable, depending on their exposure. Double glazing is ideal for windows facing south and west to let in as much natural heat as possible, while triple glazing is recommended for windows facing north and east, where there is little sunlight.

What’s the Difference Between Double and Triple Glazing?

As the name implies, it’s a question of two and three panes of glass.

Double glazing is made up of two panes of 4 mm thick glass between which argon or krypton gas is trapped, giving it its excellent insulating qualities.

A step up the ladder is triple glazing, with an extra pane for a total of three. In the same logic, gas is trapped between the panes, but the difference is that it has superior insulation performance, since it has an additional pane of glass.

How Can You Tell if a Window Has Triple Glazing?

Do you wish you could recognize a type of glazing at a glance? Unfortunately, if you don’t have this gift, there’s a very simple trick that can help you find out:

For your own safety and to prevent fire, first tie the curtains to the sides of your window,

  • Take a lighter or match,
  • Hold the flame about 10 cm from the glass,
  • Observe its reflection.

Depending on what you see, you can easily recognize which glass it is:

What you see Corresponding glazing

  • 2 flames very close together Single glazing
  • 2 times 2 flames apart Double glazing
  • 3 times 2 flames apart Triple glazing

Is Triple Glazing Advisable for Renovation?

Thanks to its excellent insulation scores, triple glazing seems to be the miracle solution for improving the performance of your home and limiting heat loss. But is this true of all homes? What about renovation?

Unfortunately, in the case of renovation, it’s not a good plan, as the cost/performance ratio is not at all valid in this case. Installing triple glazing in a home with average insulation results in low energy savings, even though the initial investment is very high and the building’s energy requirements remain high.

Last but not least, this heavy glazing is also more difficult to handle and install, and often the joinery already in place in the house is not suitable for it.

It is therefore preferable to use double glazing, which is less costly and has the added advantage of filtering less of the sun’s heat, thus making better use of this natural heating source.

Triple-glazing offers a number of attractive comfort features, from insulation to security. However, it’s important to bear in mind that this is a significant investment that requires the intervention of a specialist, both in terms of installation and advice, since the exposure of your different windows needs to be taken into account.

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