David M. Gobis, a third-generation tile setter, is an independent Technical Consultant. He has been in the trade for over 35 years and owned a successful contracting business for many years prior to his current position. He is also the author of over 150 trade-related articles and a frequent speaker at industry events. He is a member of the Construction Specification Institute, International Code Council, American Concrete Institute, National Tile Contractors Technical Committee, voting member of The American National Standards for Ceramic Tile Installation and Setting Materials (ANSI A108/118), American Society for Testing of Materials (ASTM) C-21 Ceramic Whitewares, and TCNA Handbook committees.