LATICRETE was the first manufacturer of tile and stone installation materials to earn and offer the GREENGUARD Environmental Institute’s (GEI) certification. Based on criteria used by the U.S.EPA, OSHA and the USGBC’s LEED-CI program, the GREENGUARD certification provides you assurance that the specified LATICRETE® Systems meet appropriate indoor air quality standards for volatile organic compounds (VOCs), including formaldehyde.