Called out to assess a leak in the garage ceiling. Upon arrival I informed the customer that in order to give a secure answer as to what is leaking I would need to cut open the ceiling in the garage and run tests with the shower above. Customer agreed and work was started. Cut open drywall ceiling in the garage and found that the stain was directly below the shower drain in the master bathroom. Ran water in said shower and instantly found that the shower drain was leaking from the lower gasket. Gave customer options to repair the shower drain. Customer agreed and work was started. Cut out the old shower that I found to be improperly installed previously. The drain was only hand tight causing the leak. Replaced the shower drain and the PTrap serving the shower. Once done I tested all work for leaks by running the shower for a period f time. No leaks present. Cleaned work area. Thank you for trusting TE Certified with your plumbing needs.