We are in a brand new house for the past 1 year. From the first month onward, we have noticed water coming out from under the door jamb pictured here.
When we put a plastic sheet all over the shower, there was no leak. This is how we determined that the grout was the cause. The builder has been good about coming back to re-grout the tiles, and re-silicone the shower base. The leak still occurred.
They came back to put a colorant/sealant on the grout. Better, but still leaking. Again, putting up the plastic sheet stopped all leaking. Am I taking too long a shower? (20 minutes once/week, all other days 10min). Does grout have a limit?