Slow leak in PVC joints

Jamie

Jamie

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Jul 27, 2003
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I've just re-set-up my 150 and got everything running. Upon inpection of my sump, I've detected three different areas of the plumbing that have slow leaks. They all are in points (elbows/T's) that have been previously cemented...I am using 1" and 3/4" flex PVC with miscelaneous fittings. Is there any substance that I can put over these leaks to stop them...otherwise I'll pretty much have to re-plumb my entire sump with new hoses and fittings...something I'd prefer not to have to do.
 
What kind of cement are you using? I had to use JB weld on one of my adapters since I ran out of cement and so far its been working great. I'd give you the name of what I use but i forgot and just threw out the can.
 
I used the regular purple primer and blue goop combo. The joints that are leaking were cemented a little over a year ago and have not had water running through them for almost 6 months. Maybe the cement got brittle and cracked or something. Whatever the cause of the leaks...I need to stop them. Do you think JBWeld would be able to stop an existing leak? I'm pretty much hoping for some sort of substance that I can lay over the leaky area, that will cure and seal the leak.
 
Proper PVC pipe dope or cement causes the plastic to literally melt together. It only works on true polyvinal chloride (PVC). Are you certain your flex pipes are PVC? Also I tend to agree the JB weld will work, but redoing the plumbing is a better option.
 
Yes, my flex PVC is truly PVC and it did sort of melt/fuse when I originally cemented it. Anyway, do you think the JBWeld would be able to handle/overcome the wetness (caused by the slow leaks) enough to cure and stop them??
 
There is a special type of PVC glue you need for flex PVC pipe.

But now that youve already done it, plumbers goop or JB weld will stop the leak, providing that they have plenty of time to dry.
 
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