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46 MARCH 2016 COATINGSPROMAG.COM the previous one. It's easy to get distracted when you come to a wall, but if it's already been coated, it's easier to maintain your focus on consistency." Smiling Bubbles Te crew relied on teamwork to lay down four sets (approxi- mately 400 gallons, or 1,514.2 L) of VersaFlex FSS 45 polyurea in a single, long day. W hen one nozzle man grew too tired to shoot, his hose man stepped up, and another crewman grabbed the hose. W hen the second nozzle man grew tired, the new hose man stepped up. Te crew also shaved time by using pliers to fatten outgassing bubbles. "A ll the guys carry needle-nosed pliers and razor knives," Singleton said. "If you see a bubble smiling up at you, let's say within about 10 seconds or so of shooting, you grab and twist it with your pliers. It will lie back down and you can spray again to cover it — right then and there. If you wait too long and the bubble hardens or if the bubble's too big, you have to cut it out with your knife." Te crew kept tabs on their work by periodically testing the cured polyurea with a PosiTector 200 ultrasonic coating thickness detector. Te PosiTector showed that the crew was achieving consistent thickness, which was crucial on this lagoon project. "We've been doing polyurea water features a long time and know that people like to toss all sorts of things into them," said Singleton. "Pennies are no big deal, but occasionally someone throws in a cocktail glass. It's hard to see glass underwater, so there's the chance that a maintenance worker will step on one and crunch it with his boots. Te sharp edge could dig into the membrane. We work hard to apply even coatings with no thin spots to make sure our polyurea systems not only withstand the walking, brushing, and vacuuming associated with mainte- nance but other kinds of abuse, too." Rain Hammers Worksite It was nearly dark by the time Water FX fnished applying the polyurea liner. Te men were dead tired and looking forward to a hot meal and a good night's rest. But weather-tracking radar showed the storm had just hit the California/Nevada border, a mere 50 miles (80.5 km) from the MGM property. Walking away from this job-in-progress simply wasn't an option. The crew knew that even if the storm had blown through Las Vegas quickly, it would have taken time to drain the rainwa- ter from the lagoon. The crew would have needed heaters, weed torches, and leaf blowers to tr y to dr y the polyurea lagoon liner. And before they could have been able to apply the GelFlex 1115 topcoat, they'd have to hand-wipe the entire 9,600 -square-foot (891.9 m²) lagoon liner with VersaFlex Tack Coat to promote bonding, as per manufacturer's specifications. A ll this would have put Water FX well beyond the deadline. The crew had no The timeline was tight throughout: The start date was delayed about three weeks and a rainstorm loomed at the end. The crew worked through the night to get the coating down before the rain hit. The five-person crew wore proper safety gear throughout the project, including hard hats, boots, and safety vests at all times. They added respirators, goggles, and coveralls when using the spray gun. Las Vegas Polyurea VENDOR TEAM 3M Safety equipment manufacturer 3M Center St. Paul, MN 55144 (800) 364-3577 www.3m.com DeFelsko Corp. Equipment manufacturer 802 Proctor Ave. Ogdensburg, NY 13669 (800) 448-3835 www.defelsko.com GE Measurement & Control Equipment manufacturer 1100 Technology Park Dr. Billerica, MA 01821 (866) 546-4138 www.gemeasurement.com Graco Inc. Equipment manufacturer 88 11th Ave. NE Minneapolis, MN 55413 (612) 623-6000 www.graco.com Sika Corp. Material manufacturer 30800 Stephenson Hwy. Madison Heights, MI 48071 (248) 577-0020 www.sika.com VersaFlex Incorporated Coating manufacturer 686 South Adams St. Kansas City, KS 66105 (913) 321-9000 www.versaflex.com