After waiting at least 24 hours, seal the grout using the sealer product and a clean cloth if required. Always allow the sealant to cure before using the area. Caulk the backsplash along the windows, any corners, and along countertops by applying beads of caulk.

How long should grout cure before caulking?

Doing so protects against moisture-related issues and common expansion cracking associated with these areas. Leave these areas grout-free, clean and dry before caulking them at least 24 hours after grouting.

Can you caulk over grout on backsplash?

Generally speaking, caulking over grout is not a great idea. However, if you’re attempting to replace the grout connecting the bathtub to the floor, or filling the space between two tiles or stones, your best bet is to re-grout it.