ceramic tile timeline
How long do you have to wait after setting ceramic tile to grout? How long after grouting before it is safe to walk on the floor?
Setting time will vary from mortar to mortar, and depending on conditions. But, you can usually grout after tile sets overnight, officially, wait 24 hours before grouting. After grouting, I would allow 24 hours before resuming foot traffic, but be careful.... sealing of the grout should not be done for 72 hours, so grout will be porous and suspect to staining.