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Ceramic fixtures are being more commonly glazed with 2 part epoxy compounds. The first component is a clear or opaque resin combined with a catalyst or hardener. The proper procedure requires that the nonporous fixture be sand blasted to create a rough surface for the epoxy primer to adhere to. Once the primer has dried the topcoat is applied. Since a true epoxy begins to yellow at the age of 1 year acrylic polyurethane compound is used in the topcoat. This resin is also catalyzed with a hardener and can last up to 15 years or more with proper maintenance.
Formica countertops can also be glazed in this fashion using a faux stone or granite look.
Video Epoxy glazing
References
Source of article : Wikipedia