Staining on the Ceiling - How to find the leak?

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daveswoodhauler

Minister of Fire
May 20, 2008
1,847
Massachusetts
Ok, mrs's and I noticed a rather large discoloring on the ceiling in the living room.
Directly above the room, is the master bath.
I felt the ceiling, and it is not wet, so I guess the swath of staining might have been there from some time over the last few months.
Anyway, in the master bath, there is a jet tub that we rarely have used in the last 5 years. (Staining seems to be directly around it)
Actually, we have not used it in about 5 years until the last few months for the kids....basically, from time to time we use it with our 2 oldest boys as they get a kick out of the jets. (One of the jets does not work by the way)
Anyway, I cut out a square in the closet wall to access the back of the tub, and the floor below it apppears dry with no staining. (Can't see all the way around, as it would appear that the tub is set in some sort of mortar or something.
I also pulled up a corner of the rug in the closet where the staining is below on the first floor, and no wetness/staining on the subfloor.
There are signs of the caulking being worn in some area's of the tub, so my first step is remove all the worn caulk, and recaulk the entire tub/wall, as well as the area where the tub meets the floor.
Wife and I are pretty anal about stuff, so it would seem odd that we havent noticed it before...I was thinking that perhaps the staining was perhaps from the poor caulking, but it seems to be an aweful lot of staining.
We are going to try to clean the ceiling (somewhat textured), so I guess we could ust go with a bleach type product?
Also, we are going to stop using the tub, and only use for showers.
Is it possible that perhaps one of the pipes that go to one of the jets is leaking?

I figure I just want to start with the basics, to try to find the leak. Today, I am going to cut a small access panel in the closet to reach the fixures behind the tub and to check out the drain, but I won't be able to see the drain as its probably going to be buried in the subfloor.

Just looking for some basic steps to take without ripping the whole tub out ? :roll:
 
I would recaulk ,like you said, around the tub and along the base where the floor and tub meet before i tore anything apart to get to the jets. hopefully thats all there is to it.

i hate water leaks. I have a leak in a closet ceiling right now...its from all the damn snow on my roof...water must of found its way under the flashing with all the ice and snow. the leak wasnt there before the 40+" in one week showed up.
 
I owned a 2 family a few years back. One of the apartments developed a leak below the tub. I had no access to the trap. So what I did was cut a hole in the ceiling where the stain was and installed a white plastic access panel in the downstairs kitchen. What I found was the trap was loose. Depending on your type of finish on the ceiling,the panel didn't look that bad and you will alway have easy access to the plumbing under the tub in the future. If its not the caulk this might be your course of action. I try the caulk first
 
Use a shellac based primer to cover the water stain then finish paint. Anything else will bleed through.I had a leaky jet tub and it turned out to be the flex pipe to one of the jets. I hard piped it with pvc . But I also had access after I ripped off the T&G surround. It was a PITA.
 
If possible, it might be worth trying to figure some way to plug the various jets and pressurize them (to a fairly low pressure, say around 10-15psi) in order to see if they appear to hold pressure before ripping stuff apart... Might be helpful in eliminating (or identifying) some potential trouble spots before doing demo work.

Gooserider
 
Thanks folks. Cut a few small access panels behind the tub, and don't see any staining at all. Checked out the drain from behind, and that looks well too.
I pulled off all the old caulking...fun job, and think I see where the problem is...there were a few spots that were brownish where the caulking was loose, and I think I found the culprit as it would look like the water drip down then migrate between the subfloor where the tng met.
Oh well. at least I have a newl'y caulked bathroom...problem is that stuff I got says its dry in 3 hours, and 15 hours later it is still tacky....looks like we are all showering in the kids tub today :)
 
devinsdad said:
Use a shellac based primer to cover the water stain then finish paint. Anything else will bleed through.I had a leaky jet tub and it turned out to be the flex pipe to one of the jets. I hard piped it with pvc . But I also had access after I ripped off the T&G surround. It was a PITA.


Good call on the shellac based primer!!!!!!!!!!!!!!!!!!!1

Most folks around here never heard pf primmer......
 
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