A little leak could lead to black mould during the basement or water heater closet. Leakage of bathtub, sink and shower faucets or fixtures may result in black mould expansion after some time. An N mask can be utilized to provide productive filtration for airborne particles such mildew spores. a https://connerxuilh.weblogco.com/4886244/mold-test-for-home-inspection-removing-black-discolorations-from-timber-paneling-in-the-home