To complete the job, a flexible sealant such as MAPEI Keracaulk S, Keracaulk U or Mapesil T will be required in grout joints that are considered to be areas of movement. Areas of movement include changes of plane such as a tub/tile line or countertop/backsplash line or the corners of shower walls. In addition, it is a good idea to seal cement-based grouts such as MAPEI Keracolor S and Keracolor U with a high-quality sealer such as MAPEI UltraCare Penetrating Plus, Stone, Tile & Grout Sealer.
