• skisnow@lemmy.ca
      link
      fedilink
      English
      arrow-up
      32
      ·
      3 months ago

      Yeah, I think this is a lot more plausible than the wall heating theory that someone further up got way more upvotes for.

    • cynar@lemmy.world
      link
      fedilink
      English
      arrow-up
      9
      ·
      3 months ago

      Most likely.

      The box tends to sit slightly proud of the wall. When they plaster it in (particularly retroactively) they need to build up the plaster around the socket.

      Thicker plaster means more insulation, and less condensation. Less condensation, less mold.

      The ring around the socket also supports this. The edge where the new plaster gives way to the old. That point tends to be rougher, and so more prone to capturing mold.

      It could also be thicker paint causing the same effect. Most people do the wall with rollers, but sockets with a brush, leading to a thicker coat.

        • cynar@lemmy.world
          link
          fedilink
          English
          arrow-up
          2
          ·
          3 months ago

          The ring around it makes that less likely, though still plausible. It would also have to leach through the paint.

    • Khrux@ttrpg.network
      link
      fedilink
      English
      arrow-up
      7
      ·
      3 months ago

      Mushroom circles grow in circles because they drain the nutrients from the ground, and eventually you have a nutrient barren center that grows with the ring of mushrooms around it.

      I wonder if this is something similar, although I’ve not heard of mold using up a resource before.

  • Buddahriffic@lemmy.world
    link
    fedilink
    English
    arrow-up
    23
    ·
    3 months ago

    It’s not perfectly symmetrical around the socket, kinda makes me think of someone spreading wall patching/repair material and/or paint, so maybe the mold didn’t like a different material that was made to look the same around the socket?

    • glitch1985@lemmy.world
      link
      fedilink
      English
      arrow-up
      32
      ·
      3 months ago

      Thousands of species of mold appear black (actually dark green). The one that is usually singled out in this made up category is Stachybotrys chartarum. The whole “black mold” thing is the result of several irresponsible people who are drumming up fears about mold and then profiting off of those fears. Don’t believe the hype.

      The color of a mold has no correlation to how dangerous it may be. This is frequently stated by agencies throughout the world including the Centers for Disease Control and Prevention (CDC).

      There is no evidence that otherwise healthy individuals have any reason to fear getting sick from general mold growth in buildings, mold inhalation, or any other type of exposure even to the so-called toxic molds. Yes, being around mold may cause minor effects like a stuffy nose or coughing for some, especially those with asthma or mold allergies. Typically, it only seriously affects patients who have underlying health conditions such compromised immune systems who are at risk of systemic fungal infections. But unless you’re in one of those rare categories, you really don’t have much to fear about exposure to any mold species.

      That said, we should not have mold growing in our buildings. It is an indication of something wrong and will lead to the degradation of building materials. Regardless of color, all visible mold should be removed from buildings and homes.

  • Maki
    link
    fedilink
    English
    arrow-up
    4
    ·
    3 months ago

    Could it be electromagnetic fields making it grow in that pattern?