Grout or Caulk Shower Floor

[ga6733]

I'm getting mixed advice on wether I should CaulK or Grout where the shower floor meets the walls. I have about and 1/8" gap. I just don't know how difficult it will be to caulk with the pebblestone floor and on the other hand trying to pack grout in there won't be easy either. Ive been told grout will end up cracking and caul won't hold up to the hot showers. Any help or tips appreciated. Thanks

[cx]

Welcome, Greg.

The ceramic tile industry standards call for a flexible sealant in that joint. That's to fill the joint while providing movement accommodation. 100 percent silicone is the most common recommendation for such sealants in wet areas, and such sealants are available in colors and textures to match whatever grout you are using.

Grout in that joint will crack. How your shower receptor was constructed, which we do not know, will usually determine how much and how soon, but it will crack. Whether or not you care is up to you. If your receptor is properly waterproofed, it will not matter at all when the grout cracks. Entirely an aesthetic consideration, but the industry still calls it a failure.

My opinion; worth price charged.

[ga6733]

Thanks John, Here is more info, we put up durock on the shower walls then installed a Kerdi shower kit including membrane, pan, drain, Kerdi band, and all kerdi corners inside and out with 2" overlap. We used schluter All-set for all thinset.