Is this soot or mold:

enter image description here

The metal bar you see are the garage door railing. I'm looking up at the ceiling.

How do I get rid of this mold? Do I need to cut the drywall away? Or can I just spray it with something?

Thanks for your help in advance.

1 Answer 1


It's mold. Spray some straight bleach on it.

  • damn. looks like it's on the surface for now? Commented Sep 3, 2017 at 0:25
  • It's really hard to say, but typically mold will lie on the surface, choosing the path of least resistance.
    – NPM
    Commented Sep 3, 2017 at 8:58
  • Hey @NPM Turned out not to be mold after all. It was residue from the garage-door chain ;) Commented Dec 31, 2017 at 17:43

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