For the grout to work like magic, it must be cured for a good amount of time.
Grout drying time before sealing. Drying the color grout does not take too long. Older grout should be cleaned thoroughly before being left to dry. You might have to apply a second or third coat to.
Make sure to protect grout from spills and stains during this time, otherwise you’ll be sealing in the dirt. Depending on the type of grout, drying time can vary greatly. In most cases, this occurs after a period of twenty minutes or so.
Then you will have to wait another 24 hours. It takes three days for the grout to get cured depending on the level of humidity in the environment. The answer is simple, no, it does not need to be sealed.
Otherwise, all your efforts will go in vain. Clean the grout lines with a toothbrush and a solution of 1 part white vinegar and 1 part warm water. The usually curing time for a freshly grouted surface is between 48 to 72 hours after which a sealant should be applied on the surface.
When you have new tiles and fresh grout, allow it. Leaving sealant on the tile and letting it dry can cost you a lot of time and effort cleaning it off afterward. Although it is inevitable for the sealant to get.
With sealant, the time take taken is more. It almost takes 24 to 48 hours, and the grout lines are all settled. However, you should not shower until.