Did some maintenance grouting on tile shower a few weeks ago.
Walls cured nicely.I cleaned out the broken grout around the drain,and left the gap open for a day to dry. Grouted the seam, about 1/8″ wide, and waited for it to cure.
Two days later,the grout was still soft. Dug it out and positioned hair dryer to blow on drain area. After 1/2 day, I grouted and waited.Still soft after 2 days. I figured the moisture in the tile set was wicking moisture to the new grout. Since I had to leave town for two weeks, I left it alone to cure. It was fine when I returned.
Question: what do you pros do to in this situation?
Practical Energy Cost Reduction for the Home