I had a boat
that would leak somewhere under the headliner
on occasion. While living aboard
, I decided to remove the entire headliner
and just wait and watch. In FL about 3 days a week it would literally downpour so bad you couldnt see more than 100 ft outside. Usually with thunder and lightening. So I waited... and waited. No leaks
visible. A week later I put the headliner back. Next storm... yep there's that drip!
Eventually I "fixed" it with "Captain xxx? Creeping Crack Cure". A white liquid latex like stuff. My wife actually picked it up. I probably would have never bought it. You go outside and put it around anything suspect and it wicks inside, sealing it. Kinda of a horshit cure for sure. Surprisingly.....My leak was stopped. Go figure. I applied it to deck
turning blocks and handrail bases on the cabin