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.
9. Let the grout dry for 10 minutes, then clean away the grout residue from the tiles with a grout sponge. Dampen the sponge slightly and rub it in a circular motion over the tiles to remove the grout. Rinse it frequently and repeat until the tiles are clean. Let the grout dry for 24 hours.. Spread grout over the wall tiles with a grout float, a rubber tool used for spreading grout. Hold the float at a 45-degree angle to the wall to push the grout into the joints between the tiles. Turn the float to 90 degrees to remove the excess grout from the tile faces.