I have a leak behind the wall of my shower. I opened the drain and the handle of the fosset and saw water dripping from the PVC pipe behind the all out into the main drain of the tub. How do I stop the leak?
There is no actual leakage from the main fosset of the tub. I see a PVC pipe in the back. I think it has something to do with it. I have not used the tub/shower in like 5 months

