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November 2017
(PDF updated 12/7/17)

EHandE report

TCNA is pleased to make available the introductory and ground-breaking report provided at Total Solutions Plus this November titled “Exposures To Crystalline Silica and Metals in Ceramic and Glass Tile.” This research was commissioned by TCNA, with additional support from Confindustria Ceramica, Centro Ceramico Bologna, and the TCNA Product Performance Testing Laboratory.  Environmental Health & Engineering, Inc. (EH&E), which is well-recognized for their expertise in exposure assessment, performed the research; a brief description regarding the company is included at the end of the report. 

EH&E analyzed 190 tile brands, focusing their analysis on 12 chemicals regulated by California Proposition 65: crystalline silica, antimony, arsenic, beryllium, cadmium, chromium, cobalt, lead, nickel, selenium, titanium, and vanadium. Chemical emissions from cutting tile, along with data on frequency and duration of tile cutting, were used to estimate long-term time-weighted average (TWA) exposure to tile-related emissions per Prop 65 for tile mechanics, floor coverers, and DIY installers.

With the important caveat that EH&E results apply only to the tile brands and data they examined, and cannot be generalized to other tile products without additional analysis, they determined the time-weighted average (TWA) concentrations of the above listed chemicals for the three groups of installers were below the safe harbor levels and benchmarks for lifetime cancer, developmental, and reproductive risk established by Prop 65.

Further, the study indicated that 8-hour TWA concentrations of crystalline silica attributable to cutting tile are well below the action level and PEL specified by OSHA, when OSHA-recommended methods are used.

The list of the manufacturers whose products and data were examined to date is provided at the end of the report, understanding that data and product analysis are underway from additional manufacturers.

If interested in participating in this study, we invite you to contact us at TCNA (attention Eric Astrachan (This email address is being protected from spambots. You need JavaScript enabled to view it.), Claudio Bizzaglia (This email address is being protected from spambots. You need JavaScript enabled to view it.), or Jyothi Rangineni (This email address is being protected from spambots. You need JavaScript enabled to view it.)).