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Interesting Google Ad at the Right

<A href=http://www.radiantbarrier.com/physics_of_foil.htm>"innovative insulation inc.</A>

You know me--Mr. "Radiation Freak"--but there's a problem in what they're NOT mentioning. The graphs at the site showing radiation as the overwhelming source of heat loss <I>from the physical structure</I> are likely quite accurate.

What they fail to mention is role of air infiltration. If you start thinking that you'll reduce TOTAL heat loss or gain by the amounts they imply, think again.

Infiltration is "the rest of the story".

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