Tile backsplash grout question?

Question

I've just finished tiling a backsplash in my kitchen. All went well. However, the instructions for the grout says "periodically mist with water during next 3 days", (in order to aid in the curing process). How often is "periodically"? Too often and the grout will not cure properly as it will be too wet. Not often enough and it could dry out too much, resorting to a sand-like consistency.

Once again, how often is "periodically"?

Answer 1

Maybe twice a day, that is what I usually do.

Answer 2

After installing multiple thousands of sq. ft. of tile, and applying thousands of gallons of grout; I've NEVER "Misted" after the fact and never got a call back.

Without knowing at all the method you used, or the substance of the particular grout; I am curious.

The initial mixing of Powdered grout; even a poly blend type; should be to the consistency of mashed potato. Sanded is a standard for any grout lines up to 1/2 inch. Unsanded is best for larger spaces. Certainly a back splash would be/ should be 1/8 or 1/4 at most.

A recommeded method (My opinion and experience) is to use a Grout sponge barely damp for the initial SWIPE at angles to the grout lines. As the grout sets (faster than mortar usuall) you can increase the dampness of the WIPE. That process need only take 3 steps, because you'll end up after dry time with a dust residue, easy to wipe away after 24 hours.

Cure time is relative to environmental conditions in the house and of the substrate used. Misting is a waste of time and energy.

Steven Wolf