Why is this wall discolored if it is not wet?
Mysterious wall stains that grow over time can appear completely dry to the touch, leaving homeowners unsure whether they indicate a hidden water leak or paint issues. This uncertainty makes it difficult to determine the correct way to treat the spreading discoloration.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Scrubbing the wall with TSP, rinsing, and applying an oil primer before repainting
- 2Feeling the area with a hand to check for a catchy texture at the edges
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“We noticed this stain today which seemingly came out of nowhere — is this a sign of a leak or water spraying or something?”source ↗
“Just looking for opinions. Isn't wet and I've never felt dampness but seems like its grown over time.”source ↗
“No and no, its like its the paints seeping but it goes all the way to the ceiling corner”source ↗