What type of caulking do I need?

[dep78737]

You should be able to use mortar/grout below the spa spillway. Did it open up after construction or did they just miss it. Not sure about the gap next to plastic, seems like caulk would bond better with dissimilar materials.

[mshumack]

You should be able to use mortar/grout below the spa spillway. Did it open up after construction or did they just miss it. Not sure about the gap next to plastic, seems like caulk would bond better with dissimilar materials.

The gap under the spa spillover was just missed. I think I'll by a bag of grout for that area and get a tube of caulk for the other.
Thanks