For this job , I came out met with the homeowner, there is a leak coming from the master bathroom shower. After performing thorough diagnostic I concluded that the leak was coming from the top of the shower drain due to a build up of hair causing pooling of water. I removed and replaced shower gasket and applied new layer of dope and plumbers putty and resealed the shower drain. I recommended customer to have our drain department come out monthly or every 3 months to come out and snake out shower drain to prevent build of gunk and hair which can cause a back up. I also let the customer know that if the repair did not work we will need to replace the shower drain entirely & that I will courtesy the price that she paid today off the next repair in case we needed to replace the shower drain entirely.