We have a brick chimney in the center of our house, completely exposed. Over the years some stains have developed on the bricks and mortar beneath the thimble. I suspect it is from rain water coming down the chimney and collecting soot and creosote on the way down rather than from creosote directly as the result of combustion leaking out because the staining is not very heavy and has taken a long time to develop.
Anyone know any tricks cleaning it off?
Anyone know any tricks cleaning it off?