For the average do it yourself enthusiast fixing loose pipes under a sink is.
Fix pvc pipe leak under 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.
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.
It s possible for a pipe or hose to spring a leak all on its own but it s rare.
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.
If the pvc is part of the drainage system don t run water into the drains during the repair.
Find the exact source of the leak because pipe leaks in the middle of a straight run might use a quick fix method that is different from what is needed near a pipe fitting.
When tightening connections doesn t do the job things may be complicated enough to warrant calling a plumber.
It s easier to locate the leak if you still have water or fluid running through it.
Before you attack your leaky pipe problem examine the pipes underneath the sink to identify the culprit.
It s far more likely for water to leak from a bad connection and fortunately every connection under the sink is easy to tighten.
Repair epoxies designed to bond to pvc and other plastics commonly come in putty and liquid syringe forms.
Dry the area and apply the epoxy as directed by the manufacturer.
Both can be used to repair pvc joint and pipe leaks.
How to fix a leaky plastic sink drain pipe.