Insulated window shutters

Abstract

Insulated window shutters can lessen considerably the amount of heat lost through windows. A standard double-glazed window has a thermal resistance of about R2 (RSI 0.35). An insulated shutter with a resistance 2 to 3 times that of a window, say R5 (RSI 0.88), will reduce substantially the energy loss of that window, particularly at night when the house does not benefit from solar radiation. Many different kinds of window shutters are now available. This Note has been prepared as a guide in selection as there are a number of key points to consider to achieve an effective and relatively trouble-free operation of a window shutter.Peer reviewed: NoNRC publication: Ye