sion joints; deflection in the sub- strate; etc. – Mark Heinlein, NTCA technical trainer/presenter QUESTION I’m dealing with customers who are unhappy about their recent tile installation. They feel the tile has too high a color variation. Could the installer have laid out the tile incor- rectly? Whose responsibility is this – the installer’s, or mine? Thanks for your help. ANSWER Per our conversation, on page 2 of the 2016 TCNA Handbook there is a section that deals with aesthetic classification. It specifically talks about variations in color, texture and appearance, and how tile suit- able for TCNA Handbook installa- tions must meet specifications out- lined in ANSI 137.1. This ANSI stan- dard sets performance and aesthetic criteria for many types of tile. Using tile that meets ANSI 137.1 ensures a degree of quality and consistency among tiles. Tiles can have a V (variation) des- ignation from V0 to V4. V0 tiles are very uniform in color and shade. V2, V3, V4 tile all increase in their ran- domness of color with V4 being the most random. Is the tile in question an ANSI 137.1 tile and what is its V designation? The TCNA Handbook says that tile should be installed from several boxes in a random fashion to avoid aesthetic issues. Are you aware if the installer did this? How much LATAPOXY® BIOGREEN™ 300, the industry’s first high-strength, chemical-resistant epoxy adhesive made with bio- based material for installing tile and stone, is designed to provide an a l t e r n a t i v e to conventional non-renewable petroleum-derived products. Equipped for the most demand- ing installations of tile and stone, LATAPOXY BIOGREEN 300 exceeds both ANSI A118.3 and ISO 13007 R2 requirements for epoxy adhesives and can be used in interior and exterior areas such as walls and floors, and wet and dry areas. Additionally, the bio- based epoxy adhesive can be used to install a variety of ceramic tile, marble and natural stone. It bonds to most sound, clean surfaces, spreads easily and can be cleaned with water while fresh. LATAPOXY BIOGREEN 300 is a component of the LATICRETE Lifetime System Warranty pro- viding one source, one warranty from the substrate to the grout. www.laticrete.com. ASK THE EXPERTS –––––––––––––––––––––––––––––––––––––––––––––––––––– 26 TileLetter | July 2017