If the pvc is part of the drainage system don t run water into the drains during the repair.
Fix pvc pipe leak under sink.
Before you attack your leaky pipe problem examine the pipes underneath the sink to identify the culprit.
Turn off the supply of fluid to the pvc pipe via the shut off valve if the pvc pipe is a supply line.
It s easier to locate the leak if you still have water or fluid running through it.
How to fix a leaky plastic sink drain pipe.
It s far more likely for water to leak from a bad connection and fortunately every connection under the sink is easy to tighten.
Dry the area and apply the epoxy as directed by the manufacturer.
When one or more of the nuts loosen or crack the seal is ineffective and the pipes leak as you run water in the sink.
Once the water supply is shut off decide how to fix a leaky pipe temporarily to prevent damage until a more permanent repair can be made.
Plastic pipes do not require the same level of expertise to repair that metal pipes require and the pipes are cheaper to replace should you opt to do so.
For the average do it yourself enthusiast fixing loose pipes under a sink is.
From the sink drain the tailpipe leads into a.
Repair epoxies designed to bond to pvc and other plastics commonly come in putty and liquid syringe forms.
Both can be used to repair pvc joint and pipe leaks.
It s possible for a pipe or hose to spring a leak all on its own but it s rare.