October 2010
1 post
Painting roofs white promoted as way to fight...
NEW YORK (AP) — Herb Van Gent points his infrared gun at a square of still unpainted gray shingle and clicks the trigger. He gets an immediate temperature reading: 143 degrees and rising. Then he aims it 5 feet away to a square of roof I have just painted: 98 degrees and decreasing.
He smiles.
“A 45-degree difference and we’re only on the first coat,” he says. That means it...