Usually, the term ‘secondary glazing’ refers to an extra window installed on the interior of an present window. a, U and R values for just one-pane window retrofitted with SiCellA of various thickness on a 100 μm-thick supportive substrate connected to the glass pane (inset schematic); strains and symbols, respectively, https://contemporary-ceiling-ligh91357.blazingblog.com/26393124/how-bespoke-secondary-glazing-in-fulham-can-save-you-time-stress-and-money