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Posted by Tony Conner on May 25, 2005 at 20:21:05:
In Reply to: Soot above boiler baseboards & cleaning posted by Noreen P. on May 21, 2005 at 15:20:16:
It's just dust from the floor. The air flow across the baseboard elements will pull cool air over the floor, then it will rise up the wall as the hot water in the baseboard heats it.