Coworker and I were having a discussion about a shower remodel he is finishing up this weekend and had a disagreement that turned into a bet, and I suggested TexAgs as the decider. This is high stakes where the winner gets a breakfast burrito.

So this is a DIY shower, walls are cement board with Redguard, prefab vinyl shower pan. Bottom row of tiles overlap the lip of the shower pan.

Where we disagree is - to caulk or not to caulk that gap between the shower pan and bottom row of tiles. Polls close Monday morning.

Team Caulk

Team No Caulk

Silicone caulk at the bottom

Absolutely seal that.

Team Seal it
after filling the pan with water to weigh it down until sealant cures
IMHO

Team caulk except for at the weepholes. So you could both be winners!

Looks like a burrito for me. And yes I should have said silicone, just a habit.