CoatingsPro Magazine

SEP 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 SEPTEMBER 2018 67 them in accessing the roof with the same gear our crews used. Measurements were pulled using dry-film devices more commonly utilized in painting applications to verify that the proper millage was installed. Considering the slope of the roof, using a non-destructive, digital millage testing system made more sense than conducting physical tests," said Moore. At the Height of Coating Application e first step in the coating process for the Colonnade Office Tower roofs was for the crew to apply a butter-grade layer of Poly-Sil 2500 High Solids silicone coating to all seams, fasten- ers, and penetrations using trowels and brushes. "Utilizing Accella's MF 2020 microfibers with the standard project Poly-Sil 2500 High Solids silicone, we were able to create the perfect viscosity of material needed for the different applications by simply increasing or decreasing the amount of MF 2020 mixed into the silicone coating. is meant that we could customize the butter-grade coat to both hang on vertical surfaces and be brushed into the overlaps of panel ends," stated Moore. Once the butter-grade layer was installed, the crew used a Graco GH 733 gas-powered coating rig to apply the basecoat. e topcoat was then installed using the Graco GH 733. Poly-Sil 2500 is a single-component, moisture-cured, fluid-applied silicone coating that provides a breathable membrane possess- ing superior weathering and water resistance characteristics. "is was the right product for this job because in one coat, even on slopes of 14:12, it hangs perfectly and develops the required film to provide a 20-year, full system warranty," said Moore. A lthough cooler ambient temperatures required West Roofing Systems to keep the Accella products stored in the attic of the building, the weather never got cold enough for heaters to be brought up to the roofs. "We were very fortunate that we could store the materials in the attic. It was a lot easier than having to run hoses up and over the buildings," said Moore. A Win in All Aspects of the Job It is safe to say that the owner, general contractor, and the coatings contractor are all pleased with the final outcome of the Colonnade Office Towers job. "We were able to install a roofing system that will stand the test of time and the elements. e warranty even has a color retention amendment attached to it. rough negotiations with the owner and Accella, we were able to meet the color retention requirement expected by the design firms and provide the confidence that the terra cotta finish would be a highlight of the buildings for decades to come," said Moore proudly. CP Iconic Roofs Re ad e r In qui r y at co ati n g sp ro m a m /i n q0918

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