CoatingsPro Magazine Supplements

ROOF 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 ROOF COATINGS 2018 11 aimed at helping employers reduce the risk of dropped object incidents in industrial and occupational settings. Approved on July 2, 2018, the ANSI/ISEA 121-2018 standard — titled American National Standard for Dropped Object Prevention Solutions — establishes minimum design, performance, and labeling requirements for solutions and testing. e standard was developed by ISEA's Dropped Object Prevention Group, including safety equipment manufacturers such as Ergodyne, 3M, Guardian Fall Protection, and Hammerhead Industries, whose products are under the Gear Keeper line. " is is big because it establishes tethering systems and containers as the best practice when it comes to falling object safety," said Nate Bohmbach, product director at work gear provider Ergodyne and the chairman of the ISEA committee that developed the standard. " To date, many have been content with PPE, such as hard hats, or administrative controls, such as barricade tape, but those do not prevent items from falling nor do they eliminate potential injury. Tethering systems prevent the items from falling altogether." Identify, Inspect, and Repair With safety and access plans in place, the next step in the process is typically to identify and inspect the given substrate to ensure that the equipment and materials selected for the job are appropriate. For example, diff erent roof coatings have better performance on diff erent roofi ng substrates, as usually indicated on the coating's technical data sheet. Possible roof substrates for coatings and/or SPF applications include single-ply membrane, asphaltic, built-up roof (BUR), modifi ed bitumen, metal panel, concrete, thermoplastic polyole- fi n (TPO), fi berglass, ethylene propylene diene terpolymer membrane (EPDM), and hypalon. Across the various substrates, the most common defect on roofi ng jobs is moisture damage. Leaks are an often-heard complaint. As such, contractors should be prepared to remove and replace all water-damaged areas prior to applying new roof coatings and/or SPF systems. " e key on any job is to determine the amount of repair," said Kemper's Arnold. "Due to any leak or other deterioration, the insulation can get wet, and you have to repair that before doing anything else. ere's no point in installing a coating over a soaking wet roof. So, the number one key thing is to do an infrared scan to see how intact the insulation is. at's the fi rst preparation step, because you could get to a point where re-roofi ng is more economical." Companies such as Infra-Red Analyzers and Stockton Infrared ermographic Services off er various types of infra- red moisture testing services that contractors can use to identify areas needing repair. For contractors seeking other portable options to use themselves, solutions could include the Dec Scanner and RWS moisture scanners from Tramex and the IntegriScan+ from SK A Consulting Engineers, which utilizes low voltage electronic leak detection (ELD) scanning equipment and operates on wet surfaces. Meanwhile, emerg- ing technologies, such as drones with attached thermal cameras from providers such as FLIR and Appelix, can off er new perspectives. Assuming scans confi rm that a coating job is viable, contractors should visually evaluate all areas for potential damage next. If the roof is leaking at any spot, that area needs to be identifi ed and repaired prior to any recoating. "Your substrate has to be clean, dry, and debris-free, so you're going to have to clean up the roof and maybe even power wash it as part of your preparation," said Kemper's Arnold, who suggests paying close attention to perimeters and fl ashing to ensure those areas are intact. Products such as Rust-Oleum's Rubberized Wet Patch and GacoPatch (by Gaco Western, now part of Firestone Building Products) can be applied as patching solutions, while sealants such as the MP Liquid Sealant from Mule-Hide Products Co. are useful in select areas. Liquid fl ashing compounds, such as the POLYFLASH 1C from Polyglass U.S.A., Inc. and the UltraFlash from Firestone Building Products, can be applied to seal roofi ng and waterproof- ing details. Some substrates require more preparation than others. "If you're coating metal roofs, then there's metal repair But where's the trouble originating? That's where inspection comes in. Infrared tests and moisture scanners, such as those from Tramex. Contractors can use these tools to be able to identify and repair the areas. Roofing Projects

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