Source: http://www.thriftyfun.com/tf798891.tip.html

Black Marks on Walls

My wife and I have been living in our apartment for 2 years now, in Illinois. This winter we started developing a dark or black substance on our plasterboard walls in the living room. It is slightly in the kitchen, very dark on the wooden cover over the attic in front of the bathroom doorway, and just slightly in the computer room behind the bedroom.

We do burn candles daily to keep the odor of my cigarette smoking down in the computer room and in the living room, but this never happened last year at all. Can someone please tell me if this dark substance is a mold growing or candle soot? Is there a way to tell the difference on plasterboard, and further more is their an inexpensive way to clean it off the walls.

By Mike50 from Oglesby, IL

Source: http://www.thriftyfun.com/tf798891.tip.html

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