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Went to do some cleaning in the garage, noticed some black lines on the ceiling. Also had noticed something on the ceiling of the main bathroom for some time before noticing the spots in the garage.
The garage and attic are not temperature controlled, the main floor and the basement have a retrofitted central air. Ranch house with one main floor, and an small attic above, on a slope so the basement is under the kitchen/living room/main bath and extends to to a garage that is underneath the bedrooms but can walkout from it.
Note: it has a been an extremely rainy season, so the mold may have appeared faster than it would have normally

Not very handy. Help!

Pictures of suspected mold: https://imgur.com/a/WqojBIN

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  • @asinine bleach mix? what ratio? just spray and let it dry?
    – jjj
    Commented Sep 22, 2023 at 22:49
  • @UnhandledExcepSean Ha, I updated the question in include the images. Sorry I am new here.
    – jjj
    Commented Sep 22, 2023 at 22:49
  • It does look like you have small leak above the ceiling that would feed mold growth
    – Traveler
    Commented Sep 22, 2023 at 23:28
  • @jjj concentrated or 50/50
    – Traveler
    Commented Sep 22, 2023 at 23:31
  • Or this? Mold on drywall. Should I clean-up or replace?
    – isherwood
    Commented Sep 23, 2023 at 1:43

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