There’s green staining on the outside of my house. Could this be mold? And could it spread indoors?
Our Answer
If it’s the color of plant leaves (chlorophyll green), what you describe is most likely algae or moss and not a concern (except cosmetic, perhaps). However, if you have mushrooms growing on the exterior siding of your house, hire a building investigator pronto! The growth will not spread indoors.
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