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Old 03-16-2003, 09:22 PM
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unoit
Fresh Air Inspector
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Join Date: Jan 2001
Location: The WET Coast CANADA
Posts: 5,186
HIGH All, me I'd get rid of the aluminum foil which isn't as reflective as white paint. Flat white paint would be a much better reflector.

Here's a reflective index of material.

Black less than 10%
Aluminium Foil 35-55%
Semi-gloss White Paint 55-80%
White/Black/White Film 70-80%
Flat White Paint 75-80%
Polystyrene Foam Sheeting 75-85%
Mylar Sheeting (either type) 90-92%
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