Usually, the term ‘secondary glazing’ refers to an additional window mounted on the interior of the current window. a, U and R values for an individual-pane window retrofitted with SiCellA of different thickness over a a hundred μm-thick supportive substrate connected into a glass pane (inset schematic); strains and symbols, https://donovanabaql.livebloggs.com/32424084/detailed-notes-on-slimline-secondary-glazing-fulham