Customer has mold and water damage to drywall surrounding bathtub. Recommended removal of drywall to the left and right of drywall as well as behind the bathtub near the bathroom vanity to treat for mold. Explained to customer that once we have the drywall opened we can inspect behind the bathtub and see if mold had spread. If mold has spread then we can give Ann other estimate for additional work Performed mold remediation as well as patching of drywall. While performing mold remediation and opening drywall we found that customers shower head arm was leaking in the wall. We took it off and re threaded it in to fix the leak. It also appeared that majority of the water damage was result of water exiting the shower enclosure when they where getting in and out of the shower. Recommended trying to eliminate the amount of water getting on the floor when showering.