Those with passionate views about how much to tip the pizza-delivery guy, please see the information in the footnote provided by two other sources. (For a look at the real reasons we tip and whether tipping has anything to do with the quality of service we receive, click here.)
Liquid Grout Sealer. 1  1. Allow new grout to cure for 48 to 72 hours before sealing. 2  2. Tape off baseboards and other nearby surfaces to prevent unintentional staining. 3  3. Apply sealer using a foam paint brush, paint pad or a small roller.  4. Wait 5 to 15 minutes to allow the first coat to soak into the grout.
You should give it 24 hours to dry before applying tile grout, same on both walls and floor tiles, dont leave it longer than a week to grout and dont grout within 12 hours because the tile adhesive has to dry, so i would say tile and then grout the day after, giving atleast 12 hours minimum drying time, but technically do it after 24 hours.