What is Insulated glazing?
[[File:Igu.svg|thumb|right|200px]] '''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.<ref>Ernst Neufert; Peter Neufert; Johannes Kister, ''Architects' Data'' (Chichester; Ames, IA: Wiley-Blackwell, 2012), p. 105</ref> The edges are sealed together with an [[Hermetic seal|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 (insulation)|R-value]] of [[Thermal insulation|insulated]] windows are sealed with [[argon]] gas.<ref>Floyd Vogt, ''Carpentry'' (Clifton Park, NY: Delmar Cengage Learning, 2014), p. 650</ref> == References == {{commons}} {{reflist}} <br> {{tech-stub}} [[Category:Energy conservation]] [[Category:Windows (architecture)]]