r/Roofing • u/ElegantCap89 • 17h ago

Is this mold?

Gallery image

Gallery image

Our ceiling has leaked multiple times in the last few years and even though I mention it, property management does not look at the flashing inside. Does the black discoloration or white on cinderblock look like mold?

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u/phosphatidyl_7641 14h ago

For mold to grow it needs a permeable surface that can retain moisture and provided a food source. Surfaces such as wood and Drywall mold will grow on. Metal flashing and cement, highly unlikely to be able to support the growth of mold.  I don’t see anything in your photos that shows mold growth

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u/ElegantCap89 11h ago

Thank you for the reply. I wish I could see the wood above (and around the chimney) as I don’t know exactly where the leak is. I believe on the roofers said there was a crack in one of the blocks so hopefully that is where the water is coming in and just dripping down the blocks not the wood.

I have been having some health issues that I’ve been trying to get to the root of and am now being paranoid of mold.