In winter a house looses heat from the glass windows, and in the summer, the heat from the sun radiates in through the glass windows. There basically is no insulation value in glass. A shutter, blind or curtain improves the situation because it creates air pocket between the glass and the shutter, blind or curtain. The thicker (more insulating) the covering the better.
Western Red Cedar shutters and heavy-duty curtains give the best overall results for life span and insulating properties. These two options require the biggest upfront investment but they last longer.
Shutters have the advantage over heavy-duty curtains, of better control of light, airflow and privacy. Shutters are also easier to dust and clean. We would recommend shutters as the better long-term investment over curtains, because with care, they should never need replacing and they add value to your home. The conduction of heat in wood is directly related to its density. Woods with low density have the highest thermal insulating value because such woods contain a high proportion of cell cavities. In dry wood, these cavities are filled with air which is one of the best known thermal insulators.
Shutters have the advantage over heavy-duty curtains, of better control of light, airflow and privacy. Shutters are also easier to dust and clean. We would recommend shutters as the better long-term investment over curtains, because with care, they should never need replacing and they add value to your home. The conduction of heat in wood is directly related to its density. Woods with low density have the highest thermal insulating value because such woods contain a high proportion of cell cavities. In dry wood, these cavities are filled with air which is one of the best known thermal insulators.