I have a walk in shower with a tile pan and cultured marble walls. Where the floor meets the walls, some of the caulking is coming off (see pictures). Behind the caulking that's coming off almost feels like silicone caulking. It has the same "squishiness" to it.
The caulking thats coming off is harder with a slight texture. It's not grout; it's softer than grout. Maybe they used this caulk on top of the silicone?
I've also included pictures of the construction process for the shower. It looks like they used some water resistant backboard and a Schluter Kerdi waterproofing kit (the orange stuff).
Should I be worried about this caulking coming off from a waterproofing perspective? Also, what you do to address it; just recaulk?