(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 10 of 10

Thread: Leaky PVC joint

  1. #1

    Default Leaky PVC joint

    I have read several posts about bad pvc joints and I have one. Normally, I would simply cut out the bad joint and fix the problem, however, I'm in a real tight spot. The elbow that is leaking has a sanitary tee right next to it and a toilet flange above it. I have some room to cut between the toilet flange and the elbow, but there is no room between the tee and the elbow.The tee is for the vent connection. Immediately after the tee the pipe goes into a wall and into a finished basement. Since I would rather not destroy finished space to fix this, I was wondering if there is a way to cut the joint between the tee and the elbow and remove the remaining peice of 3" pipe that is inside the tee's flange without damaging the tee? That way I can replace the elbow. My only other option (short of destroying finished space) is to cut the pipe above the joint between the toilet flange and the elbow, put a 3" coupler on the toilet flange and connect the coupler to the offending elbow flange with a 4" boot. any thoughts

  2. #2
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,602

    Default pipe

    A 3" RamBit will drill the remaining pipe out of the tee's socket.

  3. #3

    Default

    Thanks for the advise, I don't have a rambit but I see if my home center has one. Are they difficult to use?

  4. #4
    In the Trades Bob NH's Avatar
    Join Date
    Oct 2005
    Location
    New Hampshire
    Posts
    3,307

    Default

    You are working with a sanitary system without pressure. If you have access to the leaky area, you may be able to seal it.

    Take a torch and a piece of steel rod ground down to a small area at the end. Heat up the end of the rod and use it to move some of the PVC into the hole. It must be hot enough to "weld" across the hole. It takes a bit of practice but can be a lot easier than cutting out and replacing a fitting.

  5. #5

    Default

    Quote Originally Posted by Bob NH
    You are working with a sanitary system without pressure. If you have access to the leaky area, you may be able to seal it.

    Take a torch and a piece of steel rod ground down to a small area at the end. Heat up the end of the rod and use it to move some of the PVC into the hole. It must be hot enough to "weld" across the hole. It takes a bit of practice but can be a lot easier than cutting out and replacing a fitting.

    i have a similar problem and my try this... i don't have a drip..but a do have a leak.

    a droplet forms and then falls every 15 minutes or so. i did 10 pvc welds this weekend and one horizontal one did not seat properly. go figure.

    i was at first just thinking about using a heat gun over the pvc fitting hoping that would soften and weld it.. but this makes more sense...

  6. #6
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,374

    Default

    Since the pvc fittings are tapered, depending on how much cement you use, you may have to hold it for awhile, otherwise, the pressure will push the pipe back out of the fitting. It can be very frustrating. Once it resolidifies, it works fine, but not if it pops back out maybe as much as half-way.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  7. #7

    Default

    Quote Originally Posted by jadnashua
    Since the pvc fittings are tapered, depending on how much cement you use, you may have to hold it for awhile, otherwise, the pressure will push the pipe back out of the fitting. It can be very frustrating. Once it resolidifies, it works fine, but not if it pops back out maybe as much as half-way.

    I am guessing in my case, i didn't hold it long enough... i was in a crawl space doing 10-12 fittings... i forgot the quarter inch turn....

    probably lucky that more are not dripping...

    i'll tell you though... the advice on this board gave me the confidence and instruction to move a toilet...drill through 4 inches of concrete, run pvc, and tie into cast iron.

    used a core driller from home depot 70 dollars
    a soil pipe cutter from home depot 17 dollars
    pvc and fernco estimate 70 dollars
    flange 10 dollars
    tapcon screws 5 dollars
    primer and glue 10 dollars
    10 in rough in Cadet 3 right height 250 dollars
    pex and fittings for water supply 20 dollars

    this is the first phase of an overall master bath re-do.

    i'll have to re-do some more plumbing since i am tearing out a shower and putting in a whirlpool tub. i don't have a tub filler run... so i will make that 3/4" . i suspect the shower plumbing is 1/2 inch....

    what's funny right now is that i have two working johns in a 6x9 bathroom...

  8. #8
    DIY Senior Member Pewterpower's Avatar
    Join Date
    Jun 2006
    Location
    Tampa
    Posts
    262

    Default

    Quote Originally Posted by lee polowczuk
    what's funny right now is that i have two working johns in a 6x9 bathroom...
    At least you won't be lonely. You can invite a friend.

  9. #9

    Default

    Quote Originally Posted by lee polowczuk
    i have a similar problem and my try this... i don't have a drip..but a do have a leak.

    a droplet forms and then falls every 15 minutes or so. i did 10 pvc welds this weekend and one horizontal one did not seat properly. go figure.

    i was at first just thinking about using a heat gun over the pvc fitting hoping that would soften and weld it.. but this makes more sense...
    If the spot-welding doesn't work, you can always try this stuff: They sell a version of it at Walmart.
    Attached Images Attached Images  

  10. #10
    Master Plumber master plumber mark's Avatar
    Join Date
    Feb 2005
    Location
    indianapolis indiana - land of the free, home of the brave....
    Posts
    4,243
    Blog Entries
    1

    Talking that looks like electrical tape....

    what will wall mart think of next.....

    I have cut MILES and MILES of home made
    electrical tape repairs off of water lines and
    drain lines......

    now someone thought up the great idea of acutally
    packageing the electircal tape and selling it for 5 times
    the price....

    its not the product that counts , its how you package it...

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •