isolerglas

Isolerglas, also known as insulated glazing or insulated glass units (IGU), refers to a assembly of two or more glass panes separated by a spacer and sealed to form a sealed cavity. The cavity is filled with air or an inert gas such as argon to reduce heat transfer between the interior and exterior environments, improving insulation and energy efficiency. The design also provides improved sound insulation compared with single panes.

Performance of isolerglas is described by metrics such as the U-value (lower values indicate better insulation) and the solar heat gain coefficient. Many units include a low-emissivity (low-E) coating on one or more surfaces, which reflects infrared radiation while remaining transparent to visible light, further enhancing energy efficiency and reducing summer heat gains.

Construction and components typically include a spacer bar between the panes, edge seals, and a desiccant within the spacer to absorb moisture and prevent condensation. Common spacers are aluminum or other metals, and the entire assembly is sealed with sealants to maintain the airtight cavity. Gap width between panes usually ranges from about 6 to 20 millimeters. Some units use laminated glass for safety or structural reasons, and higher-performance variants use krypton or other gases in place of argon.

Variants and standards: isolerglas can be double- or triple-glazed, and there are vacuum-insulated glazing options for specialized applications. They are subject to standards such as EN 1279 in Europe or relevant ASTM/ENERGY STAR ratings elsewhere, which specify performance tests and labeling.

Applications and lifespan: isolerglas are widely used in residential and commercial windows and doors. The service life typically ranges from 20 to 30 years, depending on climate, installation, and seal integrity; a failed seal usually requires replacement of the unit.