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Asbestos coating

Posted by Harold Kestenholz - Hydronic Network on March 21st, 2001 05:29 PM
In reply to asbestos around chimney by Kevin on March 21st, 2001 12:28 PM [Go to top of thread]

No, that was unusual, a plaster or mortar coat was more usual when leaving the chimney bare. Acidic vent moisture throught the masonry may have been trapped by a sealing paint coat to powder the plaster. Asbestos was just beginning to be used in the 30's and came as 'wool' or boards, not a panel-like cardboard at that time. Asbestos 'wool' may have been mixed with plaster. It is possible that someone thought it a good idea to use asbestos panel later, though.

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