Double insulation glass
In some countries the standard to improve thermal insulation in buildings since long is double insulation glass windows (popularly also known as HR ++). The window is composed of two sheets of glass connected airtight to each other with a spacer (usually made of aluminum - yet more and more also in a more insulating "Warm edge" variant) at a certain optimized distance from each other. The insulating space between the glass plates is ideally filled with an insulating gas, such as Argon or Krypton, but at least with air.
The insulation for double insulation glass is expressed as a Ug-value, where a lower figure is better. The unit (W/m2K) indicates how much heat passes per square meter and per degree temperature difference between the two sides of the glass. By default, this insulation value is determined in the centre of the insulation glass for a vertical installation. A placement other than vertical results in a different insulation value. In addition, the solar factor (SF) and the light transmission (LT) are factors that dictate the choice for a type of double insulation glass.
Scheuten sells its double insulation glass under the brand name Isolide®, wherein optionally a variety of additional functionalities are available, such as safety, sound control, fire proof, solar and heat control, and burglary proof. In addition, there is the stronger insulating variant with triple insulation glass (sometimes unofficially called HR +++): Scheuten Trisolide®. Want to know more? Feel free to contact us or have a look at our Isolide® datasheets.