CoatingsPro Magazine

NOV 2018

CoatingsPro offers an in-depth look at coatings based on case studies, successful business operation, new products, industry news, and the safe and profitable use of coatings and equipment.

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COATINGSPRO NOVEMBER 2018 59 Go for Gold e Modera building was being built with brand-new sheathing and concrete masonry unit (CMU) surfaces, which meant that the EWI crew, ranging in size between 20 and 55 people depend- ing on the task, had little prep work to do. eir teammates in another department, though, had a ton of work up front. at other EWI crew oversaw installing all of the access solutions for the full height of the building. "We have a crew that's been working with us for probably 15 years, and that's what they do: ey put up mast climbers, sca…old, and swing stages. So we do most of that work ourselves," Moreno said. And those solutions weren't only for the EWI ‰nishing crew but for the other trades working on the exterior, such as the crew installing the sheathing and metal panels, too. at meant that one of the ‰rst things up had to be the 40- to 50-foot-long (12.2–15.2 m) mast climbers, coming from Hydro-Mobile. ey are "almost like an elevator: We have a tower, and we have platforms that go up and down the building on this tower," Moreno explained. W hen the time arrived for the ‰nishing crew to start on the building envelope, they donned harnesses and rope grabs as part of their 100-percent fall-protection process. e ‰rst layer, the air/moisture barrier called Gold Coat, is one of the build- ing's components that helps to seal the envelope from unwanted intrusions. Applied to the entire exterior surface, Gold Coat blocks moisture and air from entering the interior areas of the apartment building. Imagine the residents in a 22-story-tall building without a barrier of some sort! Starting from the bottom of the building and working their way up, the crew applied the Gold Coat at an average of 10 wet mils (254.0 microns) using ¾-inch (1.9 cm) rollers. "It's fairly thick," Moreno described. Unfortunately for EW I, because the building was still being built at the onset, they couldn't always decide on their ow n way for ward. " W hen we started working, the structure was going up, so that was another challenge," Moreno said. "A nd we're below the structure tr y ing to work underneath." To ensure that the crews below weren't in the direct line of a potential dropped object from the concrete installers above, the EW I team couldn't work in the same line vertically. "If they're working on the east elevation, we're having to work on the west elevation," Moreno explained. at type of coordination is exactly why Idrovo met with the GC and the other on-site trades and then followed up with a toolbox talk with his crew every morning. EWI also had weekly safety meetings and wore goggles and gloves when applying any of the liquid materials. "ere was de‰nitely a lot of scheduling, a lot of planning," Moreno said of the project. Each day, the crew worked on a di…erent task in one area. e ‰rst day, they applied the air/moisture barrier. On the second day, they installed Sto's Expanded Polystyrene Insulation Board, which comes in 2-foot by 4-foot (0.6 m x 1.2 m) sheets and are adhered to the wall using the same material as the basecoat. But before the crew could move on to the ‰nal two layers, there was one important step to get to that following day. JOB AT A GLANCE PROJECT: Install an air/moisture barrier outside a 22-story apartment building COATINGS CONTRACTOR: Exterior Walls, Inc. (EWI) 5558 Force Four Pkwy. Orlando, FL 32839 (407) 854-7726 SIZE OF CONTRACTOR: 120 employees SIZE OF CREW: 20–55 crew members PRIME CLIENT: Mill Creek Developers 2001 Bryan St., Ste. 3275 Dallas, TX 75201 (214) 922-8500 SUBSTRATE: Concrete masonry unit (CMU) and sheathing CONDITION OF SUBSTRATE: New SIZE OF JOB: 200,000 sq. ft. (18,580.6 m²) DURATION: 7 months UNUSUAL FACTORS/CHALLENGES: » Access was tight, and traffic was persistent in the downtown area; the finishing crew had to share the lifts and cranes with other on-site trades. » The general contractor (GC) coordinated with the concrete installation workers above and the EWI crew below to ensure they weren't in the same vertical area. » The crew staged equipment and materials on the 7 th floor when working off the taller floors. MATERIALS/PROCESSES: » Applied Sto Corp.'s Gold Coat to an average of 10 wet mils (254.0 microns) using ¾-inch (1.9 cm) rollers » Adhered 2-foot by 4-foot (0.6 m x 1.2 m) Expanded Polystyrene Insulation Board using BTS Plus » Leveled the boards using special rasping tools with a vacuum to contain foam debris, along with screens covering the access equipment and workers below vacuuming up anything that escaped » Troweled on BTS Plus with fiberglass mesh embedded to a total average thickness of 1 / 8 inch (0.3 cm) » Troweled on Stolit finish in charcoal, gray, and off-white with a medium sand texture SAFETY CONSIDERATIONS: » Wore fall protection 100 percent of the time when working on heights » Wore glasses and gloves when applying the liquid materials » Attended weekly safety meetings and daily toolbox talks

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