Why is caulk cracking already? (PICS)
Hi everyone. The tile installer caulked the inside corners and around the shower shelf before he left on Thursday. I went in there to clean up a little on Friday and noticed that it's already cracking. He used siliconized acrylic non-sanded caulk (I think the brand is ColorFast Industries). Did he use the wrong kind? Why is it cracking already? If he re-does it, should I make sure he takes out the cracked stuff first or can he just go over it again with another application?
Here are a couple pics. The first is the inside corner of the shower, the second is the horizontal joint between the tile and the corner shelf.
Thanks for any input!