Insulated glazing

Insulated glazing, otherwise known as double glazing or triple glazing, refers to the layers of glass in a window. A double glazed window is two panes of glass (also called a lite) with a sealed air (or gas) space in the middle.^[1] The edges are sealed together with an air-tight spacer. This is used so that heat cannot escape through the air space by conduction or convection. Heat radiation is not affected as it can travel through a vacuum space. To increase the R-value of insulated windows are sealed with argon gas.^[2]

Insulated Glazing Media

EURO 68 wooden window profile with insulated glazing
A typical installation of insulated glass windows with uPVC frames
Insulated glazing unit composition
Hybrid spacers - examples (left to right): TGI, Swisspacer V, Thermix TX.N and Cromatech Ultra
Examples of modern plastic and wooden window profiles with insulated glazing
VIG equipped window TIR imaging
Quadruple glazed office building in Oslo, Norway, U-value 0.29 W/m2K, R-value 20
Peak summer pane temperatures of the triple-pane argon filled and low-E coated IGU
Temperature-dependence of the PIB primary sealant water vapor permeation

References

↑ Ernst Neufert; Peter Neufert; Johannes Kister, Architects' Data (Chichester; Ames, IA: Wiley-Blackwell, 2012), p. 105
↑ Floyd Vogt, Carpentry (Clifton Park, NY: Delmar Cengage Learning, 2014), p. 650

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[1] Ernst Neufert; Peter Neufert; Johannes Kister, Architects' Data (Chichester; Ames, IA: Wiley-Blackwell, 2012), p. 105

[2] Floyd Vogt, Carpentry (Clifton Park, NY: Delmar Cengage Learning, 2014), p. 650

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