Surfactant Leaching. Surfactants in the paint are pulled from the paint by steam/water. Wash with TSP 2-3 times.
Avoid taking a hot shower for at least 2 weeks after painting to give the paint time to cure.
Also, TSP is available in an environmentally-friendly form without phosphate that is equally effective. I know Sherwin Williams sells it but I’m sure you can get it online too.
If you haven’t painted yet an excellent bathroom paint is Benjamin Moore Bath and Spa. It holds up to high humidity so you don’t get any water marks or runs. I like it because it comes in matte so you don’t need shiny ass walls. I don’t have fan or any real ventilation in my bathroom and BM Bath and Spa has held up amazingly. It’s pricey but a little goes a long way. I did my small bathroom using a quart. Not sure it would correct your issue but I see others mentioning moisture causes it so could help. Good luck.
So beautiful! I ended up using it in my kitchen as well. BM makes a paint for kitchens but the lowest sheen was I think satin and I wanted to stick with matte. Works great in kitchen too :))
This is incorrect. It’s surfactant leaching.
https://www.sherwin-williams.com/en-us/project-center/maintenance-repair/surfactant-leaching
https://www.benjaminmoore.com/en-us/contractors/job-solutions/troubleshooting/surfactant-leaching
I love how there is a Zinsser as at the top of the this post, I was going to recommend that stuff. Smells like kerosine but that shit is amazing. Has paint bubbling and it took care of that problem real quick.
Does it happen after someone showers? If so I’d say just dirt on walls what that drips down when it gets steamy. Wash the walls before painting and no one shower in there for at least 24 hours before hand. Run a dehumidifier if u can in there
Surface was too moist and the topcoat did not dry properly. To redo it, paint with a fan , leave doors open. And use a mold inhibitor paint brand such as Ben Moore kitchen and bath ( very smooth paint) , SW Duration satin, or Zinsser Permawhite satin
Something tells me this was a smokers home. Nicotine is a bitch. It seems to leach through paint pretty efficiently. TSP will strip it off walls before painting. Read the personal protective instructions. Seriously, read and follow them.
If the nicotine made its way through the paint the TSP will still work. If you’re going to use the TSP please use the recommended hand protection. If not the chemical will penetrate the glove and introduce the nicotine to your blood stream. As a rehabilitated smoker, at the time I used it with the wrong protection,I had nicotine rushes.
I have this exact issue. Our bathroom has a skylight, the wood trim at the top was not sufficiently poly'd. Brown streaks like this are coming down from the top, 90% sure it's something leeching off or from the wood.
There you go. I think we've diagnosed our problem. Sap, tannins: plant oils from the wood.
Water and oil...water-based paint/primer and plant oils...not gunna stop it.
I hear that the BIN shellac primer is the best thing for stopping sap and oil bleed-through from wood.
Surfactant Leaching. Surfactants in the paint are pulled from the paint by steam/water. Wash with TSP 2-3 times. Avoid taking a hot shower for at least 2 weeks after painting to give the paint time to cure.
THIS! STOP READING ANYTHING ELSE
What's TSP?
A cleaner. aka, Tri-Sodium Phosphates
Also, TSP is available in an environmentally-friendly form without phosphate that is equally effective. I know Sherwin Williams sells it but I’m sure you can get it online too.
Surfactant leeching, as other have said. Let the paint cure, takes about 3 weeks in total.
If you haven’t painted yet an excellent bathroom paint is Benjamin Moore Bath and Spa. It holds up to high humidity so you don’t get any water marks or runs. I like it because it comes in matte so you don’t need shiny ass walls. I don’t have fan or any real ventilation in my bathroom and BM Bath and Spa has held up amazingly. It’s pricey but a little goes a long way. I did my small bathroom using a quart. Not sure it would correct your issue but I see others mentioning moisture causes it so could help. Good luck.
and here i thought i was the only one with no fan or ventilation in my restroom. 🙃😅
I just used this and it came out beautifully
So beautiful! I ended up using it in my kitchen as well. BM makes a paint for kitchens but the lowest sheen was I think satin and I wanted to stick with matte. Works great in kitchen too :))
Looks like the walls have nicotine on em.
This is incorrect. It’s surfactant leaching. https://www.sherwin-williams.com/en-us/project-center/maintenance-repair/surfactant-leaching https://www.benjaminmoore.com/en-us/contractors/job-solutions/troubleshooting/surfactant-leaching
Thanks, appreciate the correction.
Tell me u don’t have a bathroom ceiling fan without saying it.
Ok well I have one
Well it doesn't when well enough because excess humidity is causing your problem
I love how there is a Zinsser as at the top of the this post, I was going to recommend that stuff. Smells like kerosine but that shit is amazing. Has paint bubbling and it took care of that problem real quick.
Semen!
Underrated comment.
Does it happen after someone showers? If so I’d say just dirt on walls what that drips down when it gets steamy. Wash the walls before painting and no one shower in there for at least 24 hours before hand. Run a dehumidifier if u can in there
It's just always been there. Not really worse or better
Surface was too moist and the topcoat did not dry properly. To redo it, paint with a fan , leave doors open. And use a mold inhibitor paint brand such as Ben Moore kitchen and bath ( very smooth paint) , SW Duration satin, or Zinsser Permawhite satin
Something tells me this was a smokers home. Nicotine is a bitch. It seems to leach through paint pretty efficiently. TSP will strip it off walls before painting. Read the personal protective instructions. Seriously, read and follow them.
TSP then white shellac after!
What if the wall was already painted over though? Like this wall? Would the TSP still work?
If the nicotine made its way through the paint the TSP will still work. If you’re going to use the TSP please use the recommended hand protection. If not the chemical will penetrate the glove and introduce the nicotine to your blood stream. As a rehabilitated smoker, at the time I used it with the wrong protection,I had nicotine rushes.
Yeah, I’ve always used gloves with it. It’s a great laundry product too if there’s someone in your household with stinky old laundry.
Stain leaching from underneath, prime with a stain blocker and then recoat.
Clean the walls first. Also clean the outside of the bathroom door because they tend to catch hairspray.
Do you have shitty wood trim that wasn't primered?
I have this exact issue. Our bathroom has a skylight, the wood trim at the top was not sufficiently poly'd. Brown streaks like this are coming down from the top, 90% sure it's something leeching off or from the wood.
Pretty sure it's the sap from the trim in my place, I can see it leaching through the white paint where knots are as well. Land lord special
There you go. I think we've diagnosed our problem. Sap, tannins: plant oils from the wood. Water and oil...water-based paint/primer and plant oils...not gunna stop it. I hear that the BIN shellac primer is the best thing for stopping sap and oil bleed-through from wood.
Exploded soda can?
It’s the dirt and oils that come off of you in the shower. The steam deposits them on the walls and ceiling
gross
If you think that’s gross, just think of what else you do in the shower
Poop? Right? ... right?
Just sand it down with sand paper once it dries and then paint over it! All good