Advice needed on source of shower leak.
Dry wall next to shower on either side spongy(on ouside of shower doors), outside tiles discolored, swollen floor from moisture, mold on linoleum. Pan appears to be solid, shower sliding doors removed and no sign of leakage (rust) around screws holding it in place, some of tile removed as obviously wet on outside of shower but no evidence of pooling water behind tile inside shower. Holes cut in wall and plumbing appears to be okay ie dry. We have had our builder to the house twice in warranty period and they did nothing to solve problem and now we have a bigger problem ie swollen sub floor, water damage on wall and baseboards, swollen door jam obvious water marks. They have come back to try and help us solve source of leaking but plumber and tile contractors that came can not determine the source of leak. What would you do? I suggested to my husband ripping the whole thing out and re-doing it but we really can not afford this. We have already had a claim on house insurance due to slow leak in brand new fridge since we moved into house and had to have entire first floor laminate replaced and our undermounted sink fell off the granite in the second year of living in brand new house(which we also had to pay for). Any suggestions/advice appreciated. Thank you in advance.