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.
Two Methods: Liquid Grout Sealer Aerosol Grout Sealers. Grout sealers help prevent staining and protect against water damage. These products are advised for natural stone, ceramic and porcelain tile grout that are in bathrooms and kitchens. This article will tell you how to apply grout sealer.