I had my house built in 2007. Two weeks after I moved in my Master Shower leaked to the basement. Builder came back and had floor of shower(tile)regrouted and sealed. All was good for two years and the same thing happened. Builder doesn't return phone calls now.
The basement is unfinished and is easy to look at things after removing the insulation. I noticed the water is running down around the electrical, not coming from the PVC pipe ending up filling the fire/carbon monoxide cap. I've had a plumber in, who thinks the best thing is to gut the shower stall and start over. My whole shower is tiled including the ceiling. Haven't used the shower since. HELP!: