What Are Those Dark Spots Around My Chimney?
Tom Asks: My roof has developed dark stains on along the edge and up around my chimney. Neighbor says it is mold? I would like to know what it is and how I can clean it off of the roof?
Tom Asks: My roof has developed dark stains on along the edge and up around my chimney. Neighbor says it is mold? I would like to know what it is and how I can clean it off of the roof?