In 2017, the U.S. ceramic tile market for flooring and wall installations was valued at $3.6 billion, representing 14.2% of the flooring market value with a growth year-over-year of 6.8%, according to Floor Covering Weekly (7/23/2018). The two primary types of products used for installation are cementitious (and often polymer-modified) “thin-set” mortars and water-based adhesives, typically referred to as mastic materials. The difference is that the cementitious materials require mixing with and activation by water prior to use; the mastic products are ready to use, requiring only stirring prior to application with an appropriately sized notched trowel.