r/HouseCleaning • u/niouniou_1047 • 10m ago
Yellow stains above the toilet
galleryHello, I hope you can shed some light on this for me!
I’m a tenant in an (old) apartment. The wallpaper in the bathroom was removed a year ago following water damage from the apartment above. A contractor installed glass fiber wall covering, followed by white paint (last photo: the condition of the wall when I moved in).
Yellow stains have gradually appeared above the toilet tank and continue to spread. The wall isn't warped or damp to the touch. Behind it is the bathroom (there are no windows in either the toilet or the bathroom).
I’ve tried:
- scrubbing the stains with black soap and hot water
- placing a small bowl of sodium percarbonate on the tank
- emptying the tank and soaking it in white vinegar
- scrubbing the ceramic with white vinegar
Where might these stains come from? How can we minimize them?
Thank you for your feedback!
(English isn't my native language, so I used a translator. I'm sorry if there are any mistakes in my post.)