COVER YOUR WINDOWS

ISSUE: Over the summer, the dominant source of heat gain in the house is sunlight into the windows.

SOLUTION: If you’re buying new windows, buy something with a lowemissivity coating, which will help keep winter heat in and summer heat out. Otherwise, plant trees and also install awnings or other types of sun shades. Or you can apply a thin film to the glass, such as the films from Solyx (around R120/m, 152 cm wide). It blocks the infrared energy to keep the heat out.