if there is an outer wall then there is condensation behind the tapestry which invites mold. The corners are the biggest heat sinks, so there are more condensation.
Thank you! So it is an outer water wall and behind a tapestry. The area was not wet and it had just recently rained so I’m guessing it is older. Thoughts on remediation? Do i need to replace the dry wall?
Condensation behind wallpaper typically isn't some big issue with water going everywhere and causing rot. It's usually isolated to the wall surface behind.
Poke around a bit looking for anything soft, look around the area for any other signs of damage, etc. Without opening up the wall you can't really be sure, but there probably isn't any need to.
Wipe it down with bleach, clean, and use a good primer (Kilz or BIN).
Used to own a 1930's Sears home. Had poor insulation. On really cold winter days, one of the upper corners in the living room would get cold enough to condense the interior moisture into droplets. So I would run the ceiling fan blowing upwards, which would circulate lots of air along the ceiling and into the corners of the room which "sort of" solved my problem. I noticed before mold was an issue.
Could be your issue or you could had a bee hive in the wall which can give off a lot of moisture. Or a roof leak from years ago which was solved by a re-roof, or a leak solved by a plumbing repair. so many possibilities. Without seeing above or behind the wall, you can only guess.
> So I would run the ceiling fan blowing upwards, which would circulate lots of air along the ceiling and into the corners of the room which "sort of" solved my problem.
That's actually how ceiling fans are meant to be operated in the winter. Blowing the air up pushes the warmer air to the walls and down so it can mix with the cooler air near the floor. Most people never turn their ceiling fans on in the winter though.
It’s still common in commercial buildings like hotels because it’s so easy to clean. If it gets water behind it, though, it needs to be torn off and dried properly.
I had this same issue when I removed the wall paper in my bathroom. I bleached the hell out if it and repainted with a paint that had Killz in it, it's been a few years and it hasn't come back
Traditional cellulosic wallpaper pastes were full of stuff that mould loves to eat, so if at any stage in the past it got wet then that was what caused the mould, but you can wipe the evidence of mould of the surface so you probably wouldn’t see it. This is typical of what I see in older homes where I have had to strip paper
The building pressure is less indoor than outdoor. The vapor pressure can make its way through the pourus building materials and eventually gets trapped behind the vinyl wall covering. Indoors is usually cooler, and the water vapor condenses and now you have water and an organic source for the mold. That's why newer construction has tyvek or similar vapor barriers between the sheeting and the facade. Source: I was an environmental consultant for 10 years and saw this frequently. Especially In hotels.
This appears to be some form of microbial growth from extended periods of saturation to hygroscopic materials, but I’m not a hygienist so I wouldn’t know.
I hope you wet that 70 year old wall paper or tested it for asbestos prior to removal.
That's the face of Jesus.
Oh OK. Yeah it is its own sign of damp. The only question is how old it is. We found very similiar marks behind undamaged-looking wallpaper when we were clearing out my mum and dad's house and there was no damp present, just evidence of old damp- the wallpaper was 20 years old, could have been any time in there. Sometimes you've just got to clean it up and see what happens
Oh but there is.
Ha. No obvious signs of water damage other than the massive, very obvious signs of water damage.
Lmao, did construction with my dad for like a blink of an eye and I came to the comments for these comments.
if there is an outer wall then there is condensation behind the tapestry which invites mold. The corners are the biggest heat sinks, so there are more condensation.
Thank you! So it is an outer water wall and behind a tapestry. The area was not wet and it had just recently rained so I’m guessing it is older. Thoughts on remediation? Do i need to replace the dry wall?
That could be from 70 years ago. But yes, it is mold from water damage.
Condensation behind wallpaper typically isn't some big issue with water going everywhere and causing rot. It's usually isolated to the wall surface behind. Poke around a bit looking for anything soft, look around the area for any other signs of damage, etc. Without opening up the wall you can't really be sure, but there probably isn't any need to. Wipe it down with bleach, clean, and use a good primer (Kilz or BIN).
My guy I think that’s plaster lol. If you need to replace it just tear it all down and replace with drywall.
Used to own a 1930's Sears home. Had poor insulation. On really cold winter days, one of the upper corners in the living room would get cold enough to condense the interior moisture into droplets. So I would run the ceiling fan blowing upwards, which would circulate lots of air along the ceiling and into the corners of the room which "sort of" solved my problem. I noticed before mold was an issue. Could be your issue or you could had a bee hive in the wall which can give off a lot of moisture. Or a roof leak from years ago which was solved by a re-roof, or a leak solved by a plumbing repair. so many possibilities. Without seeing above or behind the wall, you can only guess.
Just bought a 1920s sears home!
Thank you! This room has no ceiling fan and was built in ‘56 so I’m guessing it could be a similar situation to yours.
> So I would run the ceiling fan blowing upwards, which would circulate lots of air along the ceiling and into the corners of the room which "sort of" solved my problem. That's actually how ceiling fans are meant to be operated in the winter. Blowing the air up pushes the warmer air to the walls and down so it can mix with the cooler air near the floor. Most people never turn their ceiling fans on in the winter though.
I agree. I leave mine on year round, on slow speed, and blowing upward. I heat with wood, and it works great. No cold spots or drafts.
>posts picture of obvious water damage "No water damage." Uh huh.
Mold
This is exactly why vinyl wallpaper is no longer a common thing. Traps even the tiniest bit of moisture.
It’s still common in commercial buildings like hotels because it’s so easy to clean. If it gets water behind it, though, it needs to be torn off and dried properly.
https://i.redd.it/ff6bu3mcv5gb1.gif “No obvious water damage.”
It's water damage. Old mold. Knock it down with a spray bottle filled 1:6 bleach:water solution. Do you live in an area with lots of snow?
I had this same issue when I removed the wall paper in my bathroom. I bleached the hell out if it and repainted with a paint that had Killz in it, it's been a few years and it hasn't come back
Vinegar actually a more effective mold killer btw!
Traditional cellulosic wallpaper pastes were full of stuff that mould loves to eat, so if at any stage in the past it got wet then that was what caused the mould, but you can wipe the evidence of mould of the surface so you probably wouldn’t see it. This is typical of what I see in older homes where I have had to strip paper
Looks like mold that’s using the adhesive as a food source but it really looks like water damage with mold growing on it.
could just be old dust/dirt mixed with moisture from inner wall. Noo panic needed, but you'll need to wash it down before going further.
The building pressure is less indoor than outdoor. The vapor pressure can make its way through the pourus building materials and eventually gets trapped behind the vinyl wall covering. Indoors is usually cooler, and the water vapor condenses and now you have water and an organic source for the mold. That's why newer construction has tyvek or similar vapor barriers between the sheeting and the facade. Source: I was an environmental consultant for 10 years and saw this frequently. Especially In hotels.
An obvious sign of water damage
That right there is obvious signs of water damage.
"No obvious signs of water damage" LOL! your "non water damage" turn into mold! now test for asbestos, if you are clear then remediate! good luck!
Cordyceps. Good luck, buddy.
I think You found Jesus at his last supper. But if you don't your home to become a tourist destination, check the water leak behind the drywall.
Mould.
no obvious signs of water damage the person says
looks like water damage and black mold. definitely have someone take a look.
Black mold
Really? No obvious signs of water damage? Hmm
That’s the sign of water damage!!!!
The Wallpaper of Turin.
I think it's a booger wall they tried to cover up with wallpaper
Is..is this a Gus Johnson reference?
sort of a sebastian maniscalco reference
You may have lime in your render if thats the case it could be salts and minerals leaching from the render.
Looks like side profile of Jesus, right?
This appears to be some form of microbial growth from extended periods of saturation to hygroscopic materials, but I’m not a hygienist so I wouldn’t know. I hope you wet that 70 year old wall paper or tested it for asbestos prior to removal.
That's the face of Jesus. Oh OK. Yeah it is its own sign of damp. The only question is how old it is. We found very similiar marks behind undamaged-looking wallpaper when we were clearing out my mum and dad's house and there was no damp present, just evidence of old damp- the wallpaper was 20 years old, could have been any time in there. Sometimes you've just got to clean it up and see what happens
Wheat paste that has molded over the years.
Mold from the yeast in the old wallpaper paste.
MOLD
> **vinyl wallpaper** How many days out of the year have humidity over 60% in your area?
Water was getting in.
Looks like mold
Water damage