How to Repair Leaking PVC Pipe Inside of a Wall

The PVC drain pipe inside of the bathroom wall had been slowly leaking for sometime. Eventually I noticed a damp area in the basement ceiling, underneath the bathroom floor. It turns out that whoever put up the drywall put a nail through the stud, exactly where it was cut for the pvc pipe to pass though. The nail (or screw, it was too rusty to tell) cracked the pvc pipe and the crack must have slowly grown over 15 years until the water leaking out was enough to notice from below in the basement. To access the pipe, I pulled out the drawers in the vanity and cut out the back of the vanity and the drywall. Next I dries out the area with a box fan, sprayed anything that looked like mold with bleach, and proceeded to cutting out the damaged area of pipe and replacing it with a new section of PVC pipe.

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