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.
Is Grout Sealing Necessary after Installing New Tile? After installing new tiles on your floors, showers, walls, or countertops, you may ask whether or not it is necessary to seal your tile surfaces. Most installers will not seal the tile surfaces right away to ensure that the grout has enough time to cure completely.