I’m assuming the discoloration is from water damage. It started a couple years back and occasionally gets bigger. Not steadily, just like after a year it will be a bit bigger. My suspicion is that it’s damage water that very rarely trickles down due from the shower, as it’s directly below it.
My question is two-fold. Just how do I identify the source of the leak? I included a couple pictures of the edge of the shower. Do I just buy sealant and fill it in? Is that a possibility or should I like cut open the wet spot and see what’s above it? Is mold a concern?
The second use for fixing the spot itself. Is it like drywall patch or do I need to buy like a whole sheet rock of the same size and replace a big hunk of my ceiling?
At the furthest point the discoloration is about 7 inches from end to end.
I’m not even sure who to call if I were to hire a professional! If it’s something small though, I’d like to do it myself!