Insulating Window or Door Shutters Using Astrofoil Reflective Insulation

By building inexpensive frames and using Astrofoil Build it solar says they were able to save a 10 degree drop in indoor temperatures at night. That could add up to some comfort level and some pretty good savings.

photo credit builditsolar.com

photo credit builditsolar.com

Insulating Window or Door Shutters Using Astrofoil Reflective Insulation

 

http://www.builditsolar.com/Projects/Conservation/Astrofoil/AstrofoilShutters.htm

 

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