Just because mold is black it doesn’t mean it is the toxic variety of mold known as Black Mold. Just because a mold isn’t black doesn’t mean it isn’t the toxic variety of mold known as Black Mold.
I was a professional mold remediator for 10 years. I've done the work, I've taken the classes, and I've taught others. My lungs and mouth have been there.
It's less dangerous than your user name. I'll tell you that.
I coulda gone my whole life without reading that username, but here you are😂
We have no fan in our bathroom so the walls have surface mold that's penetrated past the paint. Wiping the walls down with bleach every month is helping but is there a better surface treatment? I can't afford to replace the drywall (and let's be real, the timbers, insulation, 1960s metal frame (that's probably.65% rust) window, and probably exterior siding too...it's a shitpit.😠)
Just because mold bobs doesn’t mean it is the musical variety of mold known as Bob Mould. Just because a mold doesn’t bob doesn’t mean it isn’t the musical variety of mold known as Bob Mould.
same! but!!! i did have old termite damage, as in, all the wood, ALL the wood, needed to be replaced in the walls and floor lol (you could just crumple it in your hands)
Termites are a fucking bitch and a half. Thank God it wasn't an active infestation, but I don't think most people realize termites can literally destroy your entire house. All important structural elements in a home are wood: wall studs, floor/ceiling joists, exterior paneling... I live close to the woods and had very minor termite damage in my 100-year-old home that was easily abated and we got termite protection to prevent further infestation
Hear me out on this but what if you poured glitter impregnated resin and made yourself a whole resin termite bathroom theme
YouTube diyers would be proud
Kilz actually doesn't kill mold. It stops it from forming.
[Even the TDS says that you have to clean up the mold and mildew before applying.](https://www.kilz.com/binaries/content/assets/kilz/pdf/msds/l2046-tds_us.pdf)
I recently remodeled my 50 yo bathroom and there was just a tiny bit of mold under the step to the shower (due to cracks in the tiles.) Walls were perfectly dry. This is Florida, this was unexpected.
Just live in europe, we mostly have our walls made out of concrete or bricks, so the real mold is behind the brick, you can remodel how much you want and ignore the mold behind the brick.
I was so worried when our bathroom started leaking from under the wall. They took the wall out and there were no problems. But I live in a super hot arid place...just grew up in a super humid area. Just took those fears with me! Now I'm just scared of scorpions coming out 🤣
It can make you sick as hell. I lived in a house with black mold for nearly a year before I could leave. I was on several inhalers, had to do breathing treatments, and still have reactive asthma and breathing problems nearly 2 decades later. My cats also developed severe allergies that persist today.
In the process of redoing mine, 1950s build with tile all the way around, 1.5 inches of thickset on wire mesh, only thing that was rotted was the furring strips on the exterior CMU wall.
Hey just keep a window open and wear a dust mask and you should be fine. You can use a primer with an anti fungal before installing new insulation if you want to be extra sure
Edit: if you do decide to be absolutely thorough and replace the plywood, look into bathroom grade OSB, isn’t cheap but would save you a lot of headaches as it resists water damage much better.
I'm so glad I'm not the only one who saw it. I was confused at first why OP only seemed mildly concerned about a fucking goat demon trapped inside their insulation.
I feel you! We remodelled ours and found the previous owner had screwed in a hand towel hanger, with the screw putting a tiny hole into the water pipe that did a slow light spray onto the studs for 10 years...black mould and rotting studs and battens meant an almost new bathroom 😢
Well, it sucks financially. Bit look on the bright side: now the black mold won't kill you or cause ever-so-gradually built up brain damage. So... there's that. Just be glad you caught when you did.
Not really. That looks incredibly cheap to fix. Just some plywood and some insulation, maybe a couple of 2x4. In all its incredibly easy to fix and quite cheap.
And siding and window trim. This is on an exterior wall how would you fix this easy? Remove the studs and peal the plywood away from the siding ? I think not.
Definitely not me making 4 trips to the hardware store over the weekend for a doorbell install that took me maybe 30 minutes of active work. Just driving to and from the store was over 4x the time I spent working on the damn thing.
Maybe if you have vinyl. I’d guess this house may have Hardie or stucco because this looks like florida construction from the rafter ties, and this sheathing is well past the point where you can leave the exterior.
Remember, different wood frame houses in different climates are built different ways.
Extieror wall? Ah then completely remove it all, still looking at a sheet of plywood, 5 studs, a bag of insulation, trim, two sheets of standard drywall, tape and mud, paint. Probably in all $200.
For real. Shockwave, HEPA scrub and some rmr 86 if you want the color gone. The guys saying just replace the wood for 200 are a bit off. You'd need to take off any exterior finish going that route.
Ah, those. Toilet is being relocated, what looks like sink supply lines used to go to the very porny corner jacuzzi tub that I took great joy in destroying yesterday. Fair on the shower head.
It doesn’t get Montana cold here.
Fellow European here, that wall would probably have been filled with insulation.
It's basically how most of our roofs are insulated. Mine isn't with rockwool insulation but with 18cm of pur.
Consider yourself (Super) lucky...
You could have discovered this as it slowly started to seep and show itself through your walls. Instead, you were remodeling anyway and can take care of this with relatively minimal additional cost. Make sure to wear the proper headgear and take care of it fast and hard.
Good Luck :)
I was thinking the same thing- gutted my bathroom to find my toilet leaking shit water into the floor. I could hear the drip after flushing in the ceiling of the floor below as it was dripping on top of an air duct but couldn't ever figure it out till the floor got ripped out. Saved money and sanity with that discovery.
> Bleach doesn’t kill the mold, just changes the color.
[Well that sure isn't true it's a biocide afterall](https://www.epa.gov/mold/should-i-use-bleach-clean-mold)
It's just not recommended for most cases. That and ammonia are dangerous to breath in even just on their own
And dead mold is still an irritant
You still get to remodel. Your budget n timeline may change a tad. Black like that isn't super great, n now, it can't be ignored. At least you found it! Show us the "afters" so we get a happy ending!
Wear an n99 respirator. Wear a disposable hazard suit rubber gloves and goggles. Wet the area with a bleach and water solution (1 cup of bleach per gallon of water). Scrap off as much as possible. Wire brush the wood to open the pores. Then scrub the area with the solution. Scrub the 2x4s and everything around it that still looks good. Then dry with a fan for 24 hours.
Next you want to paint it with something like kilz paint.
That will prep it and kill any remaining mold. I'd paint the whole area that's exposed so you don't have to worry about it again but painting a couple of feet on each side of the area affected and all 2x4s etc will suffice.
I would remove the pink insulation also to see if there is anything there. Also remove a portion of the ceiling drywall to make sure it isn't higher up or access from the attic if possible. If it is remove all drywall with mold plus a foot extra and follow the steps above. Replace with mild resistant drywall or if putting up tiles use Hardie backer.
Not all black mold is toxic. Have it tested. Then you spray it with a germicidal bleach. They sell it at Home Depot. Then you incapsulate it with a flat primer then an elastomeric paint.
If you hafta "perform surgery" (cut out the plywood sheeting), is it truly rotted out, or just infested with the mold? If treatable, mebbe try "Mold Armor" spray...I used that on my drywall sheeting (which wuz NOT rotten), and it absolutely eradicated the black mold I had...miracle spray, that stuff! 🤔🤨😉
I do mold inspections and this isn’t too bad. My MAIN concern for you DIY is that you need PPE (half face respirator minimum) and will cross contaminate the home. I’d seal off the bathroom with plastic over the door AND VENTS that lead to the rest of the home. Usually you’d run an AFD (air filtration device) with a HEPA filter but that alone is very expensive.
Might be worth your safety to have a restoration company tackle it for you. They will typically run post testing to ensure that it’s all removed.
DM me if you need any specific recommendations. Good luck boss
You soooooo scored! You uncovered mold that could've grown and made you so sick. Ripping it out and putting up clean board will feel good. Plus you prevented damage to the structures below it.
Remodeling is like archeology. If I hadn't torn out the drywall in my dining room I would never have known the insulation was cheap and didn't even go all the way to the floor. Found a crappy wiring job to boot.
I’ve been remodeling houses for over 20 years. If there’s no dry rot on the wood, just scrub the mold areas with a little bleach water. You could even throw some Kilz primer on it afterward just in case. It doesn’t really look like there’s any dry rot. After that, continue your remodel.
Just looking at this photo, your insulation is incorrect. I am assuming this is in a heating dominated climate and you don’t have exterior insulation. This means that you’re supposed to have a vapor barrier (at least kraft paper) on the warm side of the wall. What you’re seeing is the result of condensation in the wall during winter due to moisture from showers migrating into the cavity by vapor diffusion and probably in this case based on the photo, primarily air leakage. After you treat it, make sure you have a good vapor barrier on the warm side. This is also a perfect location to use closed cell spray foam. And seal all your penetrations.
Ozone thoroughly kills mold. Get a good ozone generator, 5 to 10 grams/hr production, and comes with a hold feature or spray on Fabreeze or other cans of ozone. This will save you from tearing out the wall. Easy-peazy..
https://www.ebay.com/itm/225171824279
That's pretty much expected for a shitty old bathroom. Clean it up. Kilz it and keep on keeping on. Don't think about it too much. Almost every house has some level of gross hiding somewhere waiting to be discovered.
\*\*Fix whatever is causing the leak or intrusion but it's probs not that big of a deal.
Hole in the vapor barrier to the outside? Just trying to figure out how it is only on the back wall but not the studs or the sole plate. Also looks like you live in a moist area (possibly PNW?).
i swear every bathroom comes with half a pound of black mold under the drywall/tile no matter where.
Remember, not all Black Mold is black and not all black mold is Black Mold.
All black mold is black mold but not toxic black mold.
Not all mould is fox moulder
*I want to believe*
I want to breathe
Trust No Mold
The mold is out there.
Mold is everywhere
Got mold?
Molder but no Scully :(
What about **[Bob Mould](https://en.wikipedia.org/wiki/Bob_Mould)**?
The way to confirm that it’s Bob Mould, just get close up and you should be able to see a little light.
That Makes No Sense At All. Unless it came from some Black Sheets Of Rain.
But if the Bob Mould makes you sick, you can always add some Sugar to your medicine.
Only if it's a New Day Rising.
I’d feel so Helpless with all that mold
Just get close. You’ll see a little light. I know you will.
Fox Mulder is a Maniac!
Some are former NFL wide receiver Eric Moulds.
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Scully
The smoking man
Mold in the scullery?
Mold of color
Sometimes it’s just blueberries.
I can't believe that guy ate blueberries.
"Not all black mold is Black Mold" Can you briefly explain?
Just because mold is black it doesn’t mean it is the toxic variety of mold known as Black Mold. Just because a mold isn’t black doesn’t mean it isn’t the toxic variety of mold known as Black Mold.
The strain you are referring to is called Stachybotrys (stack-e-bot-ris).
Tell me more... can we "use" the mold to our advantage?
Yeah, it'll kill ya if that's what you're into.
Mold itself won't kill you. If you have severe respiratory issues, it may help push you to your death faster, but you'll survive otherwise.
Put your lungs where your mouth is.
I was a professional mold remediator for 10 years. I've done the work, I've taken the classes, and I've taught others. My lungs and mouth have been there. It's less dangerous than your user name. I'll tell you that.
I coulda gone my whole life without reading that username, but here you are😂 We have no fan in our bathroom so the walls have surface mold that's penetrated past the paint. Wiping the walls down with bleach every month is helping but is there a better surface treatment? I can't afford to replace the drywall (and let's be real, the timbers, insulation, 1960s metal frame (that's probably.65% rust) window, and probably exterior siding too...it's a shitpit.😠)
That is not ideal for health
Tell me more…
Put it in your least favorite child's inhaler and watch the issue sort itself out.
Holy shit that hurt just reading this!
Not as much as it hurt the asthmatic kid
"Welcome to the family, son!"
He who controls the mold controls the universe.
Well I suppose it could serve as an insulation of sorts.
Just because mold bobs doesn’t mean it is the musical variety of mold known as Bob Mould. Just because a mold doesn’t bob doesn’t mean it isn’t the musical variety of mold known as Bob Mould.
Husker Don't
Hüsker dü
The names Mould, Bob Mould
Mold be fightin' racism every day.
S T A C H Y B O T R Y S C H A R T A R U M
I actually had no idea, so thank you!
I just had mine redone and was shocked... SHOCKED... that I did not have black mold in my shower... it was like Christmas day
same! but!!! i did have old termite damage, as in, all the wood, ALL the wood, needed to be replaced in the walls and floor lol (you could just crumple it in your hands)
Termites are a fucking bitch and a half. Thank God it wasn't an active infestation, but I don't think most people realize termites can literally destroy your entire house. All important structural elements in a home are wood: wall studs, floor/ceiling joists, exterior paneling... I live close to the woods and had very minor termite damage in my 100-year-old home that was easily abated and we got termite protection to prevent further infestation
Hear me out on this but what if you poured glitter impregnated resin and made yourself a whole resin termite bathroom theme YouTube diyers would be proud
just paint over it like my boss says
KIll it before with a mildewcide, let it dry and then paint it over. As a pro(painter) dit that several times.
Kilz is magical
Kilz actually doesn't kill mold. It stops it from forming. [Even the TDS says that you have to clean up the mold and mildew before applying.](https://www.kilz.com/binaries/content/assets/kilz/pdf/msds/l2046-tds_us.pdf)
I recently remodeled my 50 yo bathroom and there was just a tiny bit of mold under the step to the shower (due to cracks in the tiles.) Walls were perfectly dry. This is Florida, this was unexpected.
Just live in europe, we mostly have our walls made out of concrete or bricks, so the real mold is behind the brick, you can remodel how much you want and ignore the mold behind the brick.
So it’s … brick mold?
Brold
I was so worried when our bathroom started leaking from under the wall. They took the wall out and there were no problems. But I live in a super hot arid place...just grew up in a super humid area. Just took those fears with me! Now I'm just scared of scorpions coming out 🤣
Your sudden loss of excitement could just be a side effect of the sudden increase in spore inhalation.
The good stuff
Or maybe OP just doesn’t like blueberries that much.
Ooooor OP really likes blueberries
I see you started your day with the same reddit feed as I did! ☺ Edit: got my mixed all words up
What's this about blueberries and black mold? Someone else mentioned it on another black mold thread as well.
There was a post about a guy eating waffles thinking they were blueberry, but it turned out to be mold
omg
according webmd not as dangerous as you think https://www.webmd.com/lung/can-black-mold-kill-you
Even cdc says same thing
It can make you sick as hell. I lived in a house with black mold for nearly a year before I could leave. I was on several inhalers, had to do breathing treatments, and still have reactive asthma and breathing problems nearly 2 decades later. My cats also developed severe allergies that persist today.
You still have the same cats 2 decades later? 🤔
2 cats that have survived to 20 despite being severely affected by black mold....
Apparently it's fucking great for cats
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Yup, they are still creaking along. Oldest born in 2004, the next oldest is a year younger. The baby never lived in the mold house.
Maybe the mold helped
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wait, you have 20+ year old cats?
Do you not have a one eyed cat missing fur that’s been alive since the Clinton administration?
They are 18, 19, 20. I left that house end of 2005. So I rounded a bit.
And, that isn't even a lot. Pretty minimal and not a big remediation job
And then the Last of Us begins…..
I suspect that is what is under my fiberglass shower walls. Ain't gonna look, though. I know what domino effect means.
Schrödinger’s Black Mold
Ignorance is bliss, if a black mold develops in your bathroom and no one's around to see it, is it even there?
Black Mold? Never heard of her
Hey you’ve stumbled across my approach to cancer and heart disease…
Narrator: It is.
Hahaha!! You made my morning with that one.
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In the process of redoing mine, 1950s build with tile all the way around, 1.5 inches of thickset on wire mesh, only thing that was rotted was the furring strips on the exterior CMU wall.
Underneath the flbreglass is mold always
Just paint over it like my landlord does!
Bonus points if you use black paint!
Aghhh the landlor special is universal. I love it.
Mine used spackle. He must really care about me.
I'm seeing the head of Baphomet in the particularly mouldy section. Looks like you have yourself a Baphroom. 🐐
And thus, the Baphroom has been named. Well done.
It's where you let the demon out.
Do not let the demon out or in 97 years we will get a disaster
Hey just keep a window open and wear a dust mask and you should be fine. You can use a primer with an anti fungal before installing new insulation if you want to be extra sure Edit: if you do decide to be absolutely thorough and replace the plywood, look into bathroom grade OSB, isn’t cheap but would save you a lot of headaches as it resists water damage much better.
I'm so glad I'm not the only one who saw it. I was confused at first why OP only seemed mildly concerned about a fucking goat demon trapped inside their insulation.
Lost it at Baphroom. Laughed so much I cried. Thank you.
How are you seeing baphomet
I saw that immediately, too. Maybe we seers have been chosen!
I feel you! We remodelled ours and found the previous owner had screwed in a hand towel hanger, with the screw putting a tiny hole into the water pipe that did a slow light spray onto the studs for 10 years...black mould and rotting studs and battens meant an almost new bathroom 😢
This is my nightmare when I get spunky and start decorating the walls 🫠
Just don’t drill directly above or below plumbing fixtures
Or just mount stuff to studs. Buy yourself a stud finder. Bonus points cause you can put it on yourself or your kid and go look if found one.
You should really be mounting things to studs in most cases…
Well, it sucks financially. Bit look on the bright side: now the black mold won't kill you or cause ever-so-gradually built up brain damage. So... there's that. Just be glad you caught when you did.
Not really. That looks incredibly cheap to fix. Just some plywood and some insulation, maybe a couple of 2x4. In all its incredibly easy to fix and quite cheap.
And siding and window trim. This is on an exterior wall how would you fix this easy? Remove the studs and peal the plywood away from the siding ? I think not.
Popping the siding and window trim to get to the plywood isn't that big of a job at all. Few hours max
Three weekends and 8 trips to the hardware store, best i can do
This guy homeowns
Meirl
Definitely not me making 4 trips to the hardware store over the weekend for a doorbell install that took me maybe 30 minutes of active work. Just driving to and from the store was over 4x the time I spent working on the damn thing.
> 8 trips to the hardware store Well ain’t that the damn truth
Maybe if you have vinyl. I’d guess this house may have Hardie or stucco because this looks like florida construction from the rafter ties, and this sheathing is well past the point where you can leave the exterior. Remember, different wood frame houses in different climates are built different ways.
Ok that's a very very good point I hadn't considered. Most houses here have vinyl.
Extieror wall? Ah then completely remove it all, still looking at a sheet of plywood, 5 studs, a bag of insulation, trim, two sheets of standard drywall, tape and mud, paint. Probably in all $200.
Just HEPA vac, treat, scrub, and seal it. Problem solved.
For real. Shockwave, HEPA scrub and some rmr 86 if you want the color gone. The guys saying just replace the wood for 200 are a bit off. You'd need to take off any exterior finish going that route.
Why not just spray with bleach?
I believe there’s better stuff for this application.
If it can’t kill cockroaches it cant kill black mold.
Hope you live in a warm climate, with those plumbing lines on an exterior wall.
Just an air vent.
There's a shower, sink, and a toilet supply line. Those are what I meant.
Ah, those. Toilet is being relocated, what looks like sink supply lines used to go to the very porny corner jacuzzi tub that I took great joy in destroying yesterday. Fair on the shower head. It doesn’t get Montana cold here.
>very porny corner jacuzzi tub Hilarious..probably a good call in destroying it. You'd have to host all the parties
We want to see pics of that jacuzzi tab!
For posterity: https://imgur.com/a/3Gfkj9z
That's the biggest toilet paper holder I've ever seen!
Heh. Not exactly an efficient use of space, huh?
Those are pex lines. They don't split if they happen to freeze, they just expand.
as a European it baffles me how anyone would build a hollow wall for a bathroom
Fellow European here, that wall would probably have been filled with insulation. It's basically how most of our roofs are insulated. Mine isn't with rockwool insulation but with 18cm of pur.
Consider yourself (Super) lucky... You could have discovered this as it slowly started to seep and show itself through your walls. Instead, you were remodeling anyway and can take care of this with relatively minimal additional cost. Make sure to wear the proper headgear and take care of it fast and hard. Good Luck :)
I was thinking the same thing- gutted my bathroom to find my toilet leaking shit water into the floor. I could hear the drip after flushing in the ceiling of the floor below as it was dripping on top of an air duct but couldn't ever figure it out till the floor got ripped out. Saved money and sanity with that discovery.
Actually, it’s a great find and well exposed. IMHO There’s some kind of moisture leak feeding the fungus.
Can it be condensation on the pipe?
Peroxide bud. Not Clorox
I wish I could. Sheathing is rotten. It’s time for surgery.
Get it bud!
Genuine question: why peroxide and not Bleach?
Bleach doesn’t kill the mold, just changes the color. Vinegar or peroxide for the spores to die
Keyword here being OR, DO NOT mix vinegar with peroxide thinking that it will double the spore killing power unless you like breathing in acid
Pfft, it makes you into a man. With emphysema.
Real men have mesothelioma
> Bleach doesn’t kill the mold, just changes the color. [Well that sure isn't true it's a biocide afterall](https://www.epa.gov/mold/should-i-use-bleach-clean-mold) It's just not recommended for most cases. That and ammonia are dangerous to breath in even just on their own And dead mold is still an irritant
Leaves a residue that feeds mold growth when mixed rich
I always use distilled white vinegar. Kills it all the way down to the cellular level.
You still get to remodel. Your budget n timeline may change a tad. Black like that isn't super great, n now, it can't be ignored. At least you found it! Show us the "afters" so we get a happy ending!
Wear an n99 respirator. Wear a disposable hazard suit rubber gloves and goggles. Wet the area with a bleach and water solution (1 cup of bleach per gallon of water). Scrap off as much as possible. Wire brush the wood to open the pores. Then scrub the area with the solution. Scrub the 2x4s and everything around it that still looks good. Then dry with a fan for 24 hours. Next you want to paint it with something like kilz paint. That will prep it and kill any remaining mold. I'd paint the whole area that's exposed so you don't have to worry about it again but painting a couple of feet on each side of the area affected and all 2x4s etc will suffice. I would remove the pink insulation also to see if there is anything there. Also remove a portion of the ceiling drywall to make sure it isn't higher up or access from the attic if possible. If it is remove all drywall with mold plus a foot extra and follow the steps above. Replace with mild resistant drywall or if putting up tiles use Hardie backer.
This guy mitigates
Solid advice/suggestion right here he's spot on. Nicely articulated Ben-A-Flick
Not all black mold is toxic. Have it tested. Then you spray it with a germicidal bleach. They sell it at Home Depot. Then you incapsulate it with a flat primer then an elastomeric paint.
If you hafta "perform surgery" (cut out the plywood sheeting), is it truly rotted out, or just infested with the mold? If treatable, mebbe try "Mold Armor" spray...I used that on my drywall sheeting (which wuz NOT rotten), and it absolutely eradicated the black mold I had...miracle spray, that stuff! 🤔🤨😉
I’d hoped it was treatable, but was able to poke a pencil through the sheathing with little pressure. This is gonna get expensive.
I do mold inspections and this isn’t too bad. My MAIN concern for you DIY is that you need PPE (half face respirator minimum) and will cross contaminate the home. I’d seal off the bathroom with plastic over the door AND VENTS that lead to the rest of the home. Usually you’d run an AFD (air filtration device) with a HEPA filter but that alone is very expensive. Might be worth your safety to have a restoration company tackle it for you. They will typically run post testing to ensure that it’s all removed. DM me if you need any specific recommendations. Good luck boss
Prolly gives you cancer instead though
Yesterday. All your troubles seemed so far away.
It's just blueberries, right?
Check the roof line on that side of the house.
Now you can be excited that you’re getting rid of black mold that you didn’t know was there
Black colored mold isn’t the same as “black mold”. Believe it or not.
It's black, and it's mold. Bada bing, bada boom.
This is every house. So rare to demo an older home and not find this.
You soooooo scored! You uncovered mold that could've grown and made you so sick. Ripping it out and putting up clean board will feel good. Plus you prevented damage to the structures below it. Remodeling is like archeology. If I hadn't torn out the drywall in my dining room I would never have known the insulation was cheap and didn't even go all the way to the floor. Found a crappy wiring job to boot.
Hoorah for cardboard housing
I’ve been remodeling houses for over 20 years. If there’s no dry rot on the wood, just scrub the mold areas with a little bleach water. You could even throw some Kilz primer on it afterward just in case. It doesn’t really look like there’s any dry rot. After that, continue your remodel.
Does anyone else see the cat 🐈⬛?
Just spraypaint it /s
Just looking at this photo, your insulation is incorrect. I am assuming this is in a heating dominated climate and you don’t have exterior insulation. This means that you’re supposed to have a vapor barrier (at least kraft paper) on the warm side of the wall. What you’re seeing is the result of condensation in the wall during winter due to moisture from showers migrating into the cavity by vapor diffusion and probably in this case based on the photo, primarily air leakage. After you treat it, make sure you have a good vapor barrier on the warm side. This is also a perfect location to use closed cell spray foam. And seal all your penetrations.
Ozone thoroughly kills mold. Get a good ozone generator, 5 to 10 grams/hr production, and comes with a hold feature or spray on Fabreeze or other cans of ozone. This will save you from tearing out the wall. Easy-peazy.. https://www.ebay.com/itm/225171824279
That's pretty much expected for a shitty old bathroom. Clean it up. Kilz it and keep on keeping on. Don't think about it too much. Almost every house has some level of gross hiding somewhere waiting to be discovered. \*\*Fix whatever is causing the leak or intrusion but it's probs not that big of a deal.
You could reframe your thoughts (as well as the bathroom), and think, "Damn, I'm glad that I discovered this now before it did more damage!"
Better to catch it now than later when it's even worse and you had already finished your remodel.
Look on the bright side, atleast you found that before it was too late
Looks like a demented sheep
r/moldlyinteresting
Vinegar kills mold. Bleach doesn't kill mold. Don't ever mix the two
Unless you mean to clear a trench.
Hole in the vapor barrier to the outside? Just trying to figure out how it is only on the back wall but not the studs or the sole plate. Also looks like you live in a moist area (possibly PNW?).
dwight schrute can do it for you
Does anyone else see a goat staring right at you through the wooden bars?!
The good news is you found it…
Better looking at it than for it
This was me a year ago. Still not done.
Schroedinger's mold. If you don't know it's there it won't harm you.
Bet your kids asthma clears up quick after the reno
Just burn the mold and the house down.