{"id":5141,"date":"2026-11-13T19:34:24","date_gmt":"2026-11-13T18:34:24","guid":{"rendered":"https:\/\/aristofenster.eu\/double-or-triple-glazing\/"},"modified":"2026-11-14T05:03:19","modified_gmt":"2026-11-14T04:03:19","slug":"double-or-triple-glazing","status":"publish","type":"post","link":"https:\/\/aristofenster.eu\/en\/double-or-triple-glazing\/","title":{"rendered":"Double or Triple Glazing: Which Is Worth It?"},"content":{"rendered":"

Triple glazing has long been standard in new builds across Central Europe \u2013 but is it also worth it when replacing windows? And when is modern double glazing enough? In this article we compare double and triple glazing<\/strong> in terms of insulation, weight, light transmission and cost.<\/p>\n

How the two types are built<\/h2>\n

Double glazing<\/strong> consists of two panes of glass with a cavity filled with inert gas (usually argon). A low-emissivity coating on one pane reflects room heat back inside. Triple glazing<\/strong> adds a third pane and therefore a second gas-filled cavity \u2013 heat loss falls significantly once again.<\/p>\n

\"Table:
Double and triple glazing at a glance.<\/figcaption><\/figure>\n

Insulation: the biggest difference<\/h2>\n

Modern double glazing reaches a Ug value of around 1.1 W\/(m\u00b2K), triple glazing 0.5 to 0.7 W\/(m\u00b2K). This roughly halves the heat lost through the glass. Another advantage: the inner glass surface stays warmer in winter. This makes it more comfortable near the window and reduces the risk of condensation.<\/p>\n

Weight and hardware<\/h2>\n

Each additional pane of 4 mm glass adds around 10 kg per square metre. Triple glazing is therefore about a third heavier than double glazing. Modern profiles and hardware are designed for this \u2013 but for very large sashes or lift-and-slide doors, the hardware must be dimensioned accordingly.<\/p>\n

Light and solar gains<\/h2>\n

Triple glazing lets through slightly less light and solar energy (g value approx. 0.50 instead of 0.60). In practice, this disadvantage is more than offset by the better insulation, especially for windows facing north, east or west.<\/p>\n

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Which glazing suits your windows?<\/p>\n

We advise you on triple glazing, acoustic and safety glass \u2013 tailored to your location and budget.<\/p>\n

Ask for advice \u2192<\/a><\/div>\n

When is which glazing worthwhile?<\/h2>\n