Caulk or Grout? Change of plane shower stall, tile to base [PICS ADDED]
Fairly new home (5 years), noticed too much mold building up at the base of my shower stall.
I don't have a picture, but let me describe it. It's a shower only stall, the base is premade plastic/fiberglass, with tile everywhere else.
There was grout in between where the tile meets this base, plus caulking on top. This joint is roughly 1/2 to 3/4" I believe.
I thought that for this kind of joint, you would NOT use grout, caulking only. Could that be why this happened so new into home ownership?
The grout behind the caulking was cracking and its not connected (I can pull it out with a screw driver, etc). I have already removed the caulking on top of this grout line.
I'm not concerned about leaks, because of the design of the base, it has a tall lip behind the tile line. I do, however, want to repair this properly.
Is it best to REMOVE all of the grout, let dry for say 48-72 hours, and apply a silicone caulk to the joint?
If that is the best action, how does one make a 1/2 to 3/4" bead of caulk LOOK GOOD?! - I'm used to the very small joints, windows, etc, but this is a rather large bead to apply. And would I apply the caulk as far back as the lip of the base - or just enough to make contact between the base and the tile above it?
If you need pictures, I can add later when I'm home. If this is enough to offer advice, I GREATLY appreciate it!
Let me know if you need more info.
EDIT2. Here is the picture close up of grout/mortar removal. Not as deep as I originally thought, perhaps just the silicone alone will not be an issue. However, what about removing the layer of grout/mortar left on the exposed under-edge of the tile? Don't want to force this too much and disturb the tile