Stan in Oly, WA
Well-known Member
The chimney on my house is made of a light shade of Roman brick. It is badly discolored by creosote and soot. Last year while I was working on something else on the roof, I spent a few minutes experimenting to see whether I could clean it with common household cleaners. Nothing worked. I use muriatic acid diluted with water to a one sixth concentration to clean the low brick walls around the flowerbeds when they get too stained by black algae, but I don't know if that would be right for the soot stains on the chimney. Does anyone know the proper dilution of muriatic acid for this job? I'd prefer to get it done in one try. Thanks.
Stan
Stan