Thompson plumbing provided estimates to install new 40 gallon water heater up to code. Install new water heater vent. Replace two exterior hose bibs. Replace washing matching supply lines. Thompson plumbing checked hallway bathroom for water leaks. Thompson plumbing ran water down tub diverter and showerhead but did not see anything leaking from the plumbing. Thompson plumbing did take pictures and video of tiles in hallway shower with large cracks from the tub to the ceiling. Thompson plumbing believes the water is seeping through the cracks and getting into the walls causing moisture. Thompson plumbing did locate large amounts of moisture behind shower valve near access panel. Thompson plumbing recommends restoration and remediation to dry out.