Which glass is best: double, HR or triple glazing?

Double glazing is also known as insulating glass. This type of glazing naturally offers better insulation than single glazing. However, when considering double glazing, high-efficiency glazing, and triple glazing, double glazing is the least insulating of the three. Double glazing consists of two panes of glass with air compressed between them. This creates better thermal insulation, also known as the U-value. This means the home is more energy-efficient than with single glazing.

Comparing HR glass with double glazing, we see that HR glass insulates better. This type of glass is also called HR++ glass or high-performance glass. This variant also consists of two panes of glass, but there is a key difference. The space between these two panes is not filled with air, but with krypton or argon gas. Depending on the gas filling and the thickness of the cavity, a thermal insulation value (U-value) of between 0.8W/m²K and 1.3m²K is achieved. This is better than with double glazing. A lower U-value is always better than a higher U-value. HR glass is the most popular choice for renovation and new construction projects.

Then there's triple glazing, and that name obviously has a origin. The term derives from the fact that this variant consists not of two panes of glass, but of three. This means there are two cavities in this glazing, both of which are filled with gas. The thermal insulation value (U-value) is then between 0.4 and 0.7 W/m²K. This is lower than the U-value of HR glass, meaning this glazing insulates better. However, the three panes in this glazing also let in less sunlight and contribute to the pane's weight. This makes it necessary to choose extra-strong frames.

Are you considering buying a home and are you having Homekeur conduct a building inspection first? The glazing will also be thoroughly examined. Are there any problems or is the glazing negatively impacting your energy bill and living comfort? We'll tell you all about it. You'll find all the information in the building inspection report you receive from us. In it, we'll also offer advice regarding the glazing in your home, so you'll always know exactly what to expect.

The cost of a building inspection (up to 250 m²) is only €489 including VAT. We'll conduct a comprehensive building inspection and you'll receive a building report. Do you have any questions? We're happy to help and can schedule an appointment with an expert inspector right away if you wish!