EV Firestop is a Michigan firestop specialty contractor that installs and documents fire-rated building systems. Its site names Factory Mutual and Underwriters Laboratories certification and FCIA membership, plus Hilti Certified Installer and STI FIT Level II credentials, and states that it is the only firestop specialty contractor in Michigan that is dually certified. It provides digital fire-barrier documentation and tracking alongside installation, and appears on both the FM 4991 and UL-qualified FCIA registers.