Help! Bleeding Wall

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My bf has one wall that bleeds this dark brown substance. I have tried cleaning it and nothing seems to work as it comes back each time. We would like to paint but would like to know before we do this. It also bleeds from the nails in the baseboards.

q help bleeding wall
q help bleeding wall
  10 answers
  • Janet Pizaro Janet Pizaro on Apr 21, 2018
    use a stain blocking primer
  • Sharon Sharon on Apr 21, 2018
    Is this an exterior wall? was there a flood? does it smell? Personally, I would remove the wall board and investigate, testing for mold, and what's behind it. You could also check it with a moisture meter to see how wet it is. If its an exterior wall you may need a French Drain, and remediate the mold and replace the damaged insulation and wall board up 4 feet.
    • See 2 previous
    • 16999903 16999903 on Apr 25, 2018
      Sharon's reply is spot on. If it keeps coming back, there is a bigger problem. Mold is nobody's friend. It might be more expensive, but the health of those that are in contact with it or even breathing the air in this room might be susceptible to mold spores. That socket shouldn't be used at all until the problem is solved. Good luck.
  • Betsy Betsy on Apr 21, 2018
    Hmm, something is definitely nefarious behind that wall! I'd open it up in a small area and find out what's going on. Could be moisture from a leaking pipe, could be mouse stuff, could be anything. Use rubber gloves and a mask when you open the wall to stay safe. If it's moisture, I'd be concerned because of that electrical outlet. Take care.
  • V Smith V Smith on Apr 21, 2018
    Any chance it's honey from a bee infestation? If it is try to find somoene to rescue the bees.
  • Beth Beth on Apr 21, 2018
    Thank you. He rents so I will tell his landlord.
  • Annie Annie on Apr 21, 2018
    It’s very strange how there appears to be a horizonal line. I agree, the wall should be opened up. Here’s a case where it’s very good to be a renter, assuming you have a responsible landlord.
  • William William on Apr 21, 2018
    Need to get behind the wall. A few small inspection holes and a flashlight to find what's causing it.
  • Lisa Lisa on Apr 25, 2018
    Looks like it is either a plumbing leak that is travelling or an exterior leak possibly running down and getting behind siding? Or maybe leaking in from ground level depending on where that is.
  • Beth Beth on Jul 30, 2018

    Update: this was indeed mold.

  • Agnes Chrzanowska Agnes Chrzanowska on Dec 31, 2020

    That is mold