How Do I Fix This Bloody Leak? (Laundry Sink) - Plumbing - DIY Home Improvement | DIYChatroom


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 01-28-2012, 01:25 AM   #1
still remodelling....
 
Join Date: Oct 2009
Posts: 57
Rewards Points: 75
Question

How do I fix this bloody leak? (Laundry sink)


We bought a 50yr old house 2 years ago, and noted the laundry sink was on itís last legs. Well, now itís begging to be fixed.

We had a stoppage in the sink earlier this week, so I snaked it out and now it drains fine. Oh, the kitchen sink & dishwasker (directly above) drain into the same stack, so they were backing up into the laundry sink. After I snaked it out, all the sinks flow properly (havenít ran the dw yet). As you can see from the first pic, the old plumbing wasnít perfect. Iím not sure what the putty was for, but the lines werenít even in straight.

Whatever, so I bought a new p-trap assembly and hooked it up. Taped all the threads, used all new nylon washers, and thought Ė this is gonna work! WRONG. See, the old plumbing had a very small drip coming from the left basin where it attached to the PVC. It wasnít a big deal, just a few drips even under heavy use. Now, with all new plumbing, it still drips. A lot.

What the heck! How do I figure out where the drip is coming from? Iíve tried re-attaching the collar nut several times (the plumbing tape gets replaced every time), and still nothing. Iíve taken out the cross-hair drain cover (which is a pointless feature to me) and examined for cracks in the sink. I canít see any. The thing is built like a tank, so I canít imagine a small crack.

Any ideas? What can I do? I have to get some laundry done and canít do it until the sink is repaired. LOL No but seriously, I really do need some ideas on how I can a) find the leak and b) how to stop the leak.

Thanks in advance!
Attached Images
     

Advertisement

Eusibius2 is offline   Reply With Quote
Old 01-28-2012, 01:30 AM   #2
retired elect/hvac/plumb
 
plummen's Avatar
 
Join Date: Jan 2010
Location: south east of omaha/The island of misfit contractors
Posts: 2,916
Rewards Points: 2,010
Default

How do I fix this bloody leak? (Laundry sink)


Did you put a top hat washer under the strainer before installing flanged pipe?

Advertisement

plummen is offline   Reply With Quote
Old 01-28-2012, 01:33 AM   #3
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 27,758
Rewards Points: 632
Default

How do I fix this bloody leak? (Laundry sink)


There should be a flat rubber washer under the stainer baskets on the inside of the sink that does the sealing. There should be no pipe tape needed on any of the fittings I can see in the picture.

Last edited by joecaption; 01-28-2012 at 01:36 AM.
joecaption is offline   Reply With Quote
Old 01-28-2012, 01:45 AM   #4
retired elect/hvac/plumb
 
plummen's Avatar
 
Join Date: Jan 2010
Location: south east of omaha/The island of misfit contractors
Posts: 2,916
Rewards Points: 2,010
Default

How do I fix this bloody leak? (Laundry sink)


Quote:
Originally Posted by joecaption View Post
There should be a flat rubber washer under the stainer baskets on the inside of the sink that does the sealing. There should be no pipe tape needed on any of the fittings I can see in the picture.
Too late at night,my eyes/brain not working!
Anyway Im thinking the bottem of those strainers are flat,while the tail piece has a beveled end which will not seal correctly against it.
Would it not work better to have a flanged pipe coming off of each strainer with a top hat washer in each to seal against each then tie into your waste lines/trap from there like plumbing a kitchen sink?
plummen is offline   Reply With Quote
Old 01-28-2012, 02:42 AM   #5
still remodelling....
 
Join Date: Oct 2009
Posts: 57
Rewards Points: 75
Default

How do I fix this bloody leak? (Laundry sink)


I have top hat washers on top of the pvc pipe where the nut is. Are you guys saying I need another top hat washer inside the sink, and then put the crusty strainer on top of that?

Yes, the strainer is flat bottom. I'll post a picture if space allwos. The pvc pipe is flat, not beveled.
Eusibius2 is offline   Reply With Quote
Old 01-28-2012, 02:44 AM   #6
still remodelling....
 
Join Date: Oct 2009
Posts: 57
Rewards Points: 75
Default

How do I fix this bloody leak? (Laundry sink)


This is the best pic I have on my phone.

Name:  ForumRunner_20120128_014347.jpg
Views: 181
Size:  23.7 KB
Eusibius2 is offline   Reply With Quote
Old 01-28-2012, 02:47 AM   #7
still remodelling....
 
Join Date: Oct 2009
Posts: 57
Rewards Points: 75
Default

How do I fix this bloody leak? (Laundry sink)


Ooooh... I found a picture of the leak before I did anything. Lol. Maybe this will help???



Name:  ForumRunner_20120128_014704.jpg
Views: 159
Size:  23.4 KB
Eusibius2 is offline   Reply With Quote
Old 01-28-2012, 02:57 AM   #8
retired elect/hvac/plumb
 
plummen's Avatar
 
Join Date: Jan 2010
Location: south east of omaha/The island of misfit contractors
Posts: 2,916
Rewards Points: 2,010
Default

How do I fix this bloody leak? (Laundry sink)


Nope,you just need one washer under the basket/strainer where pipe attaches to it.
If the waste arm you installed has a flat flange on it and you have a top hat installed id say try running a bunch of hot water down the drain to get things good and warmed up ,then try snugging the nut up and let it cool back down and check for leaks again
plummen is offline   Reply With Quote
Old 01-28-2012, 03:14 AM   #9
still remodelling....
 
Join Date: Oct 2009
Posts: 57
Rewards Points: 75
Default

How do I fix this bloody leak? (Laundry sink)


Here's an ugly finger sketch showing where i have the top hat washer. Both left and right sinks are the same, but only the left lesks.



Name:  ForumRunner_20120128_021438.jpg
Views: 161
Size:  8.8 KB
Eusibius2 is offline   Reply With Quote
Old 01-28-2012, 03:24 AM   #10
retired elect/hvac/plumb
 
plummen's Avatar
 
Join Date: Jan 2010
Location: south east of omaha/The island of misfit contractors
Posts: 2,916
Rewards Points: 2,010
Default

How do I fix this bloody leak? (Laundry sink)


As long as the pipe under the top hat has a flat flange to go between it and nut it should be correct
plummen is offline   Reply With Quote
Old 01-28-2012, 03:26 AM   #11
retired elect/hvac/plumb
 
plummen's Avatar
 
Join Date: Jan 2010
Location: south east of omaha/The island of misfit contractors
Posts: 2,916
Rewards Points: 2,010
Default

How do I fix this bloody leak? (Laundry sink)


Can you remove the tail piece from under sink and post a picture of it?
plummen is offline   Reply With Quote
Old 01-28-2012, 09:34 AM   #12
still remodelling....
 
Join Date: Oct 2009
Posts: 57
Rewards Points: 75
Default

How do I fix this bloody leak? (Laundry sink)


Ok, so was wrong a bit. The pipe coming out of the sink IS flanged, not straight cut like in my hand drawing.

Here's the best pic I can get at the moment. I don't have it in me to take it all apart at the moment. You can see the nut, flange, top hat washer (just the edge), the threads of the sink. Hope this helps.



Name:  ForumRunner_20120128_083428.jpg
Views: 251
Size:  13.4 KB
Eusibius2 is offline   Reply With Quote
The Following User Says Thank You to Eusibius2 For This Useful Post:
plummen (01-28-2012)
Old 01-28-2012, 09:44 AM   #13
retired elect/hvac/plumb
 
plummen's Avatar
 
Join Date: Jan 2010
Location: south east of omaha/The island of misfit contractors
Posts: 2,916
Rewards Points: 2,010
Default

How do I fix this bloody leak? (Laundry sink)


Ok thats what i needed to see!
have you tried using the nut off the old pipe to see if it fits the strainer threads better?
__________________
"facts" have no relevance to this discusion
Posting from a concrete bunker under a non descript barn
plummen is offline   Reply With Quote
Old 01-28-2012, 09:52 AM   #14
still remodelling....
 
Join Date: Oct 2009
Posts: 57
Rewards Points: 75
Default

How do I fix this bloody leak? (Laundry sink)


I can't get the current nut off. It's locked in place by the flange and by the elbow.

I did try to use another nut to see if it was just a stripped thread, but another nut fit like butter. :-(
Eusibius2 is offline   Reply With Quote
Old 01-28-2012, 09:53 AM   #15
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 27,758
Rewards Points: 632
Default

How do I fix this bloody leak? (Laundry sink)


If your trying to reuse the old straner toss it and replace it.
Your missing the washer that goes under the flange inside the sink on the straner baskit.
There also is no nut to hold the baskit tight to the sink. All thiis plus a a thin flat washer would come with a new strainer. The thin one acts as a slip ring between the nut and the bottom of the sink.

One other thing I see is the tail piece is not flat where the two mating surfaces are. I like to fit everything in place and tighten the nuts where they attach to the sink strainer first since the to flat surfaces have to mate perfectly flat to seal, All the outher slip fitting can be off some and still seal.

Advertisement


Last edited by joecaption; 01-28-2012 at 10:00 AM.
joecaption is offline   Reply With Quote
The Following User Says Thank You to joecaption For This Useful Post:
Eusibius2 (01-30-2012)
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Draining laundry sink into washer stack? glamgirrl Plumbing 33 12-31-2011 03:02 PM
Installing utility sink in laundry room 71Whaler Plumbing 9 11-24-2011 11:33 AM
Slow leak under kitchen sink cdruet Site Feedback and Suggestions 6 09-06-2010 08:28 PM
Leak in a bathroom sink zach4u Plumbing 3 10-06-2009 08:18 PM
Installing Utility Sink In Laundry Room - Main Floor pieman312 Plumbing 13 01-09-2008 09:13 PM




Top of Page | View New Posts