My 70 yr old French house has 3/4″ threaded brass water pipe which I’ve occassionaly repaired via cutting out & threading new sections w/unions.
However, I have a tiny drip coming from a threaded joint of some pipe running just beneath a tiled bathroom floor (accessible from the basement). There’s hardly any clearance to work (there’s cement just above the pipe) and the pipe disappears in different directions & I’m afraid if I tear into it, I’ll loosen up something elsewhere
The drip is maybe 30 drops a day. Is there any quick fix expoxy/sealant etc I could use at the thread entry point to stop this? It’s sitting over an area where I store books, so I’d like to eliminate it