Understanding an Odd Leak
#1
10-13-19, 09:47 PM
Understanding an Odd Leak
I have a strange leak I cannot figure out. After the driving rain this last week, I found a water stain on a wall, about midway between the floor and the ceiling. No stains on the ceiling. There is no pipe behind this wall either.
When I went up into the attic, I found a horizontal vent stack runs across that wall which might leak, but I don't understand how it could leak and not affect the ceiling.
Can anyone shed some light on this issue?
When I went up into the attic, I found a horizontal vent stack runs across that wall which might leak, but I don't understand how it could leak and not affect the ceiling.
Can anyone shed some light on this issue?
#3
10-14-19, 06:45 AM
No. I went up there looking for leaks from theroof. I didn't uncover the pipe other than just discover it. I will look for that. I's a new house, so Ive got a warranty. Im calling them today.
#5
10-16-19, 08:02 PM
Got the builder out here, his crew found that the horizontal Vent Stack was leaking (big storm last week) Not enough to ruin much, but they took out the insulation and added a cap to teh vent stack to prevent that in the future. I will probably go up there myself and add some PVC cement around the edges of the elbow join.
Thanks for the input.
Thanks for the input.
#6
10-17-19, 04:11 AM
Group Moderator
A cap on the vent stack is a Band-Aid fix. I assume they found a leaking joint in the vent that probably was not glued. Instead of fixing the leak they put a cap on the roof to prevent rain water from entering the vent.
#7
10-17-19, 10:05 AM
Agreed with Pilot Dane. It's a fine short-term fix, but a vent is required for a properly working drain system. By capping it, you're opening yourself to potential issues with traps being sucked dry and sewer gasses entering the house, and possible drain flow issues.
Make sure they fix the actual problem of the broken or non-cemented pipe - especially while your house is still under warranty.
Make sure they fix the actual problem of the broken or non-cemented pipe - especially while your house is still under warranty.
#8
10-17-19, 11:08 AM
Group Moderator
I should not have said "cap". I'm sure (really hope) they installed a 180° so the opening faces downwards or did something like a chimney cap to prevent rain from getting into the pipe.
Zorfdt
voted this post useful.
1. Sink, the drain pipe comes to 28" inches off the floor where I'd like to tie in the sink drain. So the finished sink will have to be at 40" which I'll live with. Can I use a sanity tee to connect to the line if it is placed in a 0 degree horizontal position, basically where all hole connections are on the same level? If not any other ideas without having to go up? Secondly, is there a way I can add a vent to the sink line as proposed in the diagram (again without going up off the main line) instead of using a studor?
2. I believe code say the laundry standpipe has to be 18" minimum, my washing machine specs minimum 24" from the floor (max 96") I take that to refer to the height of the standpipe like IRC code. My concern is the height of the p-trap. Is there any standard or requirements or nonos to how high or low the p-trap can be?
Also any issues with the swing back flow preventers placement? Any other mistakes I am making here or constructive tips or thoughts?
Really appreciate your help.