dards, it may not have been pos- sible for the installer to correct for any potential gross manufacturing deviations during the installation process. However, it is the respon- sibility of the installation contrac- tor to notice such deviations and bring them to the attention of the owner or the owner’s representa- tive before the installation begins. If the mosaics were within stan- dard tolerance for mounted sheets, the installation is likely out of tolerance for grout joint alignment (ANSI A108). Or, the problem could be a combination of out-of-tolerance deviations from standard in both manufacture and installation of the mosaics. From this distance, I can only speculate as to the cause(s) of the issue. Your client is thinking in the right direction for determining the precise cause(s). I recommend that an Industry-Recognized Consultant be contacted to conduct a review of all aspects of the installation. A list of Industry-Recognized Consultants can be found on the NTCA’s web- site at this link: https://www.tile- assn.com/page/recconsultants. Depending on the client’s loca- tion, you may want to begin by contacting Donato Pompo and Kent Klaser of Ceramic Tile and Stone Consultants. CTaSC has nation- wide consulting services. They can be reached at: www.CTaSC.com, 866-669-1550, donato@ctasc.com, kent@ctasc.com. The new LATICRETE® STRATA_ HEAT™ electric radiant floor heat- ing system consists of the world’s first heat-conductive thin-set addi- tive that utilizes Thermal Diffusion Technology™ to uniformly distrib- ute heat through the adhesive to eliminate cold spots and quickly achieve the desired floor tempera- ture. The system also includes an innovative high-performance floor heating wire, an uncoupling mat and a Wi-Fi enabled thermostat. The advanced system transfers heat faster than standard floor heating products on the market to reduce energy costs and provide customers with the most custom- izable floor heating experience imaginable. For more information, visit www.laticrete.com. ASK THE EXPERTS –––––––––––––––––––––––––––––––––––––––––––––––––––– 24 TileLetter | November 2018