Why does this happen to my walls in the laundry room and the adjoining

by Suz

q why does this happen to my walls in the laundry room and the adjoining

Why does this happen to my walls in the laundry room and the adjoining bedroom? I’ve painted over it twice but it comes back. Does it have something to do with the vibration from the washing machine?

  20 answers
  • Are those spots where the dry wall screws are? It almost looks like mold in those spots.

  • Redcatcec Redcatcec on Dec 13, 2021

    From your picture they seem to be in pairs, which suggests nail pops to me. Are they smooth as the wall or are they protruding? If so, here's how to fix that:


  • Dee Dee on Dec 13, 2021

    Those are nail pops. How do you stop nail pops in drywall?

    Positioning is key to the stability of the drywall and in preventing pops. Screws not set in far enough are easy to spot and correct, but screws set in too far are less noticeable and can pop once the drywall shifts. Make sure you check the depth of all your set screws and don't set any too far in.

    1. With your putty knife, scrape away the raised drywall caused by the pop—being sure to clear away any loose debris.
    2. Set a screw about a 1 ½ inches above or below the pop, pressing against the drywall and being sure to hit the stud. (This will refasten that section.) Sink the screw enough to dimple the drywall, but not far enough to tear the paper of the drywall.
    3. Remove the old nail with the claw of your hammer, or if it’s a screw, unscrew it with drill.
    4. To patch your repair, load the putty knife with joint compound or spackle. At an angle, press the compound into the hole while passing the blade diagonally (left to right) along the surface of the hole and wall. Be sure that the entire crack is filled, so go over it if you must.
    5. Allow the patch to dry for several hours. Once it’s dry, check to see if the joint compound has shrunk leaving indentations. If this is the case, the patch will need another layer of compound. Repeat steps 3-5, only this time, pass the blade diagonally from right to left (this will fill in misses from the opposite direction—it works great).
    6. Once it’s all white and powdery, you can sand it, being sure to smooth the edges where the patch meets the wall surface. Wipe the patch to clean off the dust.

    Paint the repair with a primer or your matching flat wall color. If your wall has a shine to its paint finish, like egg-shell or semi-gloss, you must give it a coat of primer or flat paint first–paint that has a shine to its finish will “flash” directly over a patch, which means it will leave a visible difference in finish compared to the rest of the wall.

  • William William on Dec 13, 2021

    If those ARE nail pops, the vibration can make them loosen up. You can use drywall screws screwed about an inch from them making sure you hit studs. Pound the nails back in then drywall patching compound over it all. Sand smooth, prime and paint. If they are just discoloration from nails or screws and not protruding from the wall then they weren't covered with drywall compound. You can wipe them down with a damp cloth. Then use Kilz 2 or BIN 123 primer over the spots. Then touch up the paint or repaint.

  • Betsy Betsy on Dec 13, 2021

    Hi Suz: Those are nail spots. When you painted, did you use a primer? Zinsser is the better product to use, between Kilz and Zinsser. I would repaint, using Zinsser primer. If the nail pops are bulging the drywall, you can get a block of wood about 4 x 4, place it over the area and tap on the wood to push the nail back into the 2x4 wood. The block of wood will keep you from putting a dent in the drywall. On the bright side, and there is always a bright side, :) you know exactly where your studs are if you want to put up shelves in the future. Measure from the corner of one wall to the centre of the 2 nails, write this down and then measure from that point to the middle of the next set of nails. Write down which wall you measured from and keep this in a safe place for future use.

    Good luck

  • Homeroad Homeroad on Dec 13, 2021

    It looks like the dry wall screws are coming through. My contractor banged them in and then drilled more screws into the wall. It then had to be spackled and painted again.

  • It’s a little hard to tell from the image what’s happening. If it appears as stains, you can use a primer over them then repaint. If it’s nails popping out, try to remove them and use screws instead, patch and paint.

  • Deb K Deb K on Dec 13, 2021

    Hello Suz, they are not necessarily nail pops, I have attached an article about how dirt and soot settle on beams and nails called ghosting . You may likely be able to clean them off with a good washing of the the walls and ceiling.


  • Mogie Mogie on Dec 14, 2021

    Nail pops look like wall sores. Mud over the nail pop, sand, prime and paint.

  • Kathy Gunter Law Kathy Gunter Law on Dec 14, 2021

    It appears those are the heads of the screws or nails that were used to hang the drywall. It could have something to do with the conditions when it was hung. I would prime the walls with a blocking primer like Zinser Bullseye 1-2-3 then paint.

  • Maura White Maura White on Dec 14, 2021

    Looks like marks from screws/nails from the room on the other side. You could add some dry-wall compound over it, sand, and repaint to cover those spots.

  • To me it looks as if the finish on the screws or nails is bleeding through the paint. As mentioned above, a good primer could be used to cover the spots then repaint. I hope this helps!

  • Johnavallance82 Johnavallance82 on Dec 16, 2021

    Damp? Need more Air curculation or Extractor fan. Open a window?

    • Suz Suz on Dec 16, 2021

      Interesting. Is that mold then, do you think?

  • Johnavallance82 Johnavallance82 on Dec 16, 2021

    Well it could be, I gave another alternative to nail pops. It is very difficult to see from the picture. Maybe try knocking the nails in further, or replace with screws and filler and then redecorative or touch in, in the bedroom and see if that solves the problem. If it does, repeat in the Laundry room. If not go for more ventilation in the Laundry Room and possibly cushion the wall or machine with Foam or Polystyrene to stop it knocking on the wall. Best wishes.

  • It looks like mold on the nail spots...or it could just be the nail spots, but I would check for mold before I just painted over it. You don't want it trapped in the wall.

  • They look like drywall screws which this can happen when the house settles.

  • Annie Annie on Dec 20, 2021

    Perhaps post another pic,,,, Cant see what the issue is

  • Agnes Chrzanowska Agnes Chrzanowska on Dec 31, 2021

    These are marks from screws .. at least that is what it looks like https://www.thespruce.com/steps-for-repairing-drywall-nail-pops-1822835

  • SBlizzard SBlizzard on Jan 01, 2022

    I don’t think they’re just nail pops. Something is causing the discoloration. I’d be tempted to cut the Sheetrock around one of the sets and remove it. See what’s really happening. You can patch the wall.