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.
If you answered B, C, or D, then please read on. The 411 on Grout Sealing. When tile floors (and backsplashes and bathroom walls) are installed in a home, they are most often left unsealed. What this means is that your grout will suck in dirt, spills, and stains like a magnet.