>Also, how does insulation help keep out infrared radiation, which is a key heating source if your place has sufficient windows. Low-emissivity glass, plus sh

>Also, how does insulation help keep out infrared radiation, which is a key heating source if your place has sufficient windows. Low-emissivity glass, plus shutters and screens. http://glassed.vitroglazings.com/topics/how-low-e-glass-works http://glassed.vitroglazings.com/topics/how-low-e-glass-work...