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SEPTEMBER 2015 COATINGSPROMAG.COM 54 room. Verr y was checking up on things one day when lunch- time rolled around. T he only problem: He left his security badge back at the office. "Te lunch room serves a heck of a bufet for two dollars a day," said Verry. "I didn't have my badge with me, and it wasn't fve minutes before the security cameras picked me up. Two guards came in and unceremoniously escorted me out of the building. It was embarrassing. Tey take security very seriously because of all the cash they keep on hand. If anyone breaks the bank, the casino wants it to be the legal way." Desco Field Superintendent Dave Dobbs shrug ged off the incident and focused on the task at hand. His crew fired up HTC 500 and 800 concrete grinders w ith dust collection systems attached. T hey attacked the perimeters w ith Bosch 7-inch (17.8 cm) angle grinders w ith attached vacuums. "We were just looking for a rough surface that our epoxy could attach to; we weren't trying to grind of the existing material," said Dobbs. "We also used angle grinders to chase out bigger cracks [maximum width and depth, ½-inch, or 1.3 cm] and flled them with a commercially available, two-part, polyas- partic caulk that mixes at the tip of the gun. We leveled the caulk with paint scrapers." The Key Resin Company system used three layers: 580 at ~40 mils (1,016.0 microns) dry film thickness (DFT), 511 at ~40 mils (1,016.0 microns) DFT, and 467-HS at 3–5 mils (76.2–127.0 microns) DFT. The first two layers of the coating system were applied in the same manner. The crew first poured the material on the concrete and then spread the material using trowels. While working on the 23,000-square-foot (2,136.8 m²) total job, the crew worked around casino patrons. That meant that the areas had to be closed off and all products needed to have low odors and low volatile organic compounds (VOCs).