Water – How to caulk shower edges with the same color as the grout

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I've used a tan colored grout between my shower tiles. I've noticed that the edges of the shower have already cracked after 1 week. To prevent cracking, many people on the Internet suggest caulking the perpendicular edges instead of grouting. The company that made my grout also makes caulk with an exact color match. When I looked at the fine print on their caulk, I saw "do not use in areas with constant water exposure". So what are my other options to have a color-matched caulk that can also withstand constant water exposure?

My grout is Sahara Tan colored:

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The company also sells a Sahara Tan caulk:

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Best Answer

I recently built a shower using this same type of grout, but a different color. The matching silicone caulk I used was suitable for wet locations (picture below). I used this caulk in the gap between the vertical shower corners but I used up the one tube I ordered from HD and used clear silicone caulk along the horizontal shower to base gaps, and the vertical shower to adjoining walls wood trim. In the gap between the shower tile and shower glass I also used the clear silicone caulk. It all looks really nice now.

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