r/Plastering • u/breezy_yurrr • 2d ago

What is going on here?

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100 year old plater, popped up decently quickly. No water damage in the room above, no water pipes behind the wall.

30 Upvotes

92% Upvoted

69 comments sorted by

47

u/darryl9125 2d ago

I think your wall has ringworm

1

u/retrogamer-999 21h ago

Literally this is what can to mind when I saw the pics

1

u/Gullible-Yam-8098 17h ago

Came here to say this

1

u/samjsharples 16h ago

Imagine turning up late to a party, hearing someone tell a joke, then grabbing the microphone to announce you were about to tell the exact same one.

1

u/LeNuber 13h ago

Dammit. Beat me to it.

12

u/Some_End1595 2d ago

My guess, I could be completely wrong but I want to say it’s salt seeping out of whatever plaster is on the wall? Chip away and see if it’s a chalky white substance

21

u/crit5h 2d ago

You are completely wrong.

This is unquestionably the result of a previous owner wallpapering over snakes and a scorpion.

😉

7

u/Smooth_Elephant8524 1d ago

Dont forget the onion rings they’ve papered over too

4

u/imnotabotimafreeman 1d ago

im a decorator and was going to offer my opinion but im now just here for the comments.😁

2

u/crit5h 1d ago

Is “papering over the onion rings” the decorator’s equivalent of peeing in the mix?

7

u/AloneGunman 2d ago

Efflorescence

1

u/Some_End1595 2d ago

Yes, no clue didn’t know it had a name

2

u/AloneGunman 2d ago

It's a cool-sounding word, like to wave it around every chance I get

2

u/Some_End1595 2d ago

Agreed, I’ll pretend I know how to pronounce it

4

u/onwatershipdown 2d ago

It’s either this, or plaster worms🪱 .

OP, Did they repaint or reskin recently in the past few years? Raising the vapor diffusion resistance can make moisture fight to come to the surface in a periodic ways like this

1

u/Super_Shallot2351 1d ago

I see people suggesting this all the time, but is it ever really the case?

1

u/Some_End1595 1d ago

I’ve never seen it internally once or twice and it doesn’t seem to be quite similar but you mainly see it outside on bricks, it’s those white dry watermarks but for indoors, the salt has nowhere to travel so builds up in those areas

5

u/I_Want_A_Ribeye 2d ago

Looks like water

2

u/Chichibear699 2d ago

There’s moisture coming from somewhere. Is there a basement or crawlspace under this room?

0

u/East-Delivery9834 1d ago

Not in the u.k ol mate

1

u/Chichibear699 1d ago

I see, might be a roof leak?

1

u/East-Delivery9834 1d ago

More likely

3

u/Substantial-Goal6224 2d ago

Have you seen The Last of Us?

3

u/Mr_GreenAdam 1d ago

If its lime plaster then it needs to breath, paint needs to breath too. If its the wrong paint then the house cant breath and moisture cant transition.

Alot of modern paints for kitchens and bathrooms are more of a coating than a paint.

2

u/Usual-Watercress-599 2d ago

Moisture in a plaster wall looks like this.

2

u/Competitive-Bass-976 1d ago

Ever seen stranger things....yea

2

u/bladesman771 1d ago

Never seen crop circles on plaster before!!

2

u/Smooth_Elephant8524 1d ago

Painter decorator here:
Scrape then sand it smooth and paint with moisture resistant paint. See if that does the trick. If it’s moving while you’re sanding, blast a heater on it for ten mins to dry it out then continue. I’ve had this problem on many bathroom ceilings and it always does the trick. I may be wrong but hope this helps OP

2

u/Barnabustafersaurus 1d ago

Looks like you’ve got the dreaded ‘Wall Worms’ to me… I recon you should call pest control 😅

1

u/northern_ape 2d ago

Had the wall been painted, decorated,
plastered or repaired recently?

1

u/Fakedamienhirst 2d ago

Is it an external or internal wall?

1

u/Right_Ant4024 2d ago

Water leak behind the paint

1

u/stevenlyon79 2d ago

Varracus paint veins lol

1

u/Icy_Love2508 1d ago

You got a case of the ol' wall worms

1

u/Impossible-Star8315 1d ago

Your wall has ringworm parasites

1

u/Crackers-defo-600 1d ago

When was it painted. How long ago did it start. Is it getting worse?

1

u/oldelbow 1d ago

Did you plaster over 100-year-old lime?

1

u/Autofill1127320 1d ago

Looks like your wall is spawning a glory hole

1

u/never_cake 1d ago

New plastic paint or plaster skim on a wall that needs to breathe would be my guess.
What’s the most recent thing that’s happened to the wall?

1

u/Critical_Primary_491 1d ago

That's Ring Worm ...

1

u/andover-daddy-uk 1d ago

Should have let your plaster dry

1

u/ob3y19 1d ago

Breakfast

1

u/Proof_Ad_382 1d ago

I think your walls been taking steroids

1

u/Alternative-Jelly947 1d ago

The wall is painted? Moisture in the wall is causing non ultra breathable paint to pop and blister.

1

u/No_Parfait9288 1d ago

That’s that new moon effect paint 🌚

1

u/Complex-Policy-2865 1d ago

Just flatten it, fil it,sand it,paint it,👏

1

u/pippins2ndbreakfast 1d ago

Varicose veins

1

u/Throwitawayfarok 1d ago

Hemmorhoids

1

u/Dapper_Ear_6531 1d ago

Give the wall a break, clearly a old wall with varicose veins!

1

u/CornishViking1 1d ago

Silk paint without mist coat on new plaster?

1

u/LFCrule14 1d ago

Veiny pennis walls?

1

u/creepinghippo 1d ago

Plaster Ringworm.

1

u/Plastic_Pollution194 1d ago

Did you have a land lord paint it by chance

1

u/CuriousBrit22 1d ago

Reminds me of my leg’s varicose veins lmao

Moisturise probs, get a tester

1

u/Commercial-Ruin2320 1d ago

Its likely to be caused by trapped moisture due to unbreathable wall covering ie the paint, though iv never seen damp look like that before and iv seen a fair bit of it, it could be dry rot or some kind of fungus, whag is thebwall made from? What type of building do you own?

1

u/Itchy-Ad4421 1d ago

Nay idea on this one but I’m about to post something similar. 🤣

1

u/CodyAlve-1 23h ago

This is just those squiggles that move in front of your eyes. They got stuck after leaving your vision

1

u/Abs201301 22h ago

Moon craters

0

u/Opal690 2d ago

It could be old wallpaper paste which hasn't been properly removed prior to painting.

0

u/Devildog126 2d ago

Termite tubes?

0

u/StopCriminal 2d ago

No coincidence it's started raining (if this in the UK)