This stress will be tensile during temperature decrease, or compressive. during temperature increase. If the compressive stress level exceeds the column buckling resistance of. the restrained length, then lateral buckling (or snaking) will occur.
Dry Time. In most cases, you should allow the grout to dry overnight before using that room as total dry time may take up to 24 hours. If you are thinking about sealing your grout after you have installed it, you need to wait even longer than that so that all of the moisture has had time to be released.
When you have finished sealing the grout, allow the solution to soak in for about 10 minutes. Then, use a microfiber cloth, towel, or old t-shirt to wipe the excess solution off of the grout and tiles. 4. The next day, run a wet mop over the area you sealed, just to make sure you got up all of the excess solution.