
To see how much of a difference shades can make, I measured surface temperatures with my handy little Black & Decker thermal leak detector, a birthday gift that might rival the View Master I got when I was a kid. This morning the shades on the south window were already down. However, one window on the east side was not shaded, letting a little bit of sun in to hit a chair. At about 9:10 a.m., the shaded part of the chair was 80.6 ⁰ F and the sunny part of the chair was 95.5 ⁰ F.