Thermal imaging surveys of historic buildings conducted by Edinburgh World Heritage last year, have clearly revealed how effective shutters, curtains and blinds are at preventing heat loss through windows.
A thermal imaging camera reveals where heat is leaking from a building, with hot areas showing up red and colder surfaces in blue. Throughout Edinburgh’s World Heritage Site the results were consistent, where shutters and curtains were closed they proved to be highly effective in keeping in the heat.
The images below show left: Shutters – first floor internal shutters closed, ground floor left open. Georgian New Town house. right: Shutters and blinds – window at top right has internal shutters and blinds closed. Victorian tenement.

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