Agreed that silicone is the way to go for areas with moisture, but they can be more of a pain to clean up since they're not water soluble. Acrylic caulks can be cleaned up with water before they're dry so it's a bit more forgiving if you're not a caulking pro.
In theory, both should be good for areas with movement but I've heard silicone holds up a bit better over time.
jeffprobst t1_j2fuhcq wrote
Reply to comment by 0LowLight0 in Help Please - How to get a straight line of grout? by jshxx
Agreed that silicone is the way to go for areas with moisture, but they can be more of a pain to clean up since they're not water soluble. Acrylic caulks can be cleaned up with water before they're dry so it's a bit more forgiving if you're not a caulking pro.
In theory, both should be good for areas with movement but I've heard silicone holds up a bit better over time.