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16 ROOF COATINGS 2016 COATINGSPROMAG.COM Many coatings manufacturers are producing coatings that are formulated from a variety of post-industrial and post-consumer materials and contain low-to-zero volatile organic compounds (VOCs). For example, many manufactur- ers offer solvent-free coatings that are compliant with VOC requirements well below the current limits of California's relevant air-quality management districts. Currently, California's regulations are among the strictest in the country when it comes to acceptable VOC levels. Keeping Up With Industry Standards With all of the complexities of a roof coating application, it can be a jug gling act to stay on top of all industr y standards. T his is especially true since safety and other industr y regulations are constantly changing. For example, VOC regulations are being implemented in more and more areas across the countr y. " VOC codes are continually changing, and it is important that the installer keeps up w ith not only national codes but also any local code changes," said Kelley of R M Lucas. W h i le t he y do not produce st a nd a rd s, NRC A desig ns g u idel i nes ba sed on best roof i ng prac t ices for t he i ndu s - t r y. T he orga n i z at ion is a n e xcel lent resou rce for roof i ng cont rac tors. " We recent ly issued T he N RC A R oof ing Manual: Metal Panel and SPF R oof Systems — 2016. T h is m a nu a l cont a i ns tec h n ic a l i nfor m at ion concer n i ng t he desig n a nd i nst a l l at ion of qu a l it y spray poly u ret h a ne foa m roof s ystems. T here is i nfor m at ion on roof dec k s a nd subst rates com mon ly u sed w it h SPF, protec t ive coat i ngs, roof accessor ies, a nd reroof i ng. In add it ion, it cont a i ns const r uc t ion det a i l s add ressi ng SPF roof s ystems w it h protec t ive coat i ngs a nd membra ne su r fac- i ngs, a s wel l a s reroof i ng det a i l s," sa id Joa n C rowe of NRC A . C rowe a l so poi nted out t h at t here a re t wo recent upd ates to m ater i a l st a nd a rd s per t a i n i ng to el a stomer ic coat i ngs u sed w it h SPF roof s ystems: A S T M D669 4: Standard Specification for Liquid-Applied Silicone Coating Used in Spray Polyurethane Foam Roofing Systems a nd A S T M D69 47: Standard Specification for Liquid Applied Moisture Cured Polyurethane Coating Used in Spray Polyurethane Foam Roofing System. RCGA is another resource for roof coatings applicators. According to Wolfe, RCGA is currently discussing the need for greater precision in reporting environmental conditions during application. " Typically, roofing contractors are not worried about the surface temperature of a material they are installing. W hile roof coating is fairly tolerant of various temperatures, failures cannot be properly assessed if the contractors do not studiously record the conditions of the installation. Wind speed, relative humidity, surface tempera- ture, and ambient temperature all have a role in the success of the installation. is, among other quality control methods, will provide standards that exceed those required by the manufacturer," stated Wolfe. A Long-Term Solution Applying roof coatings and SPF can be complex and require a great deal of knowledge, coordination, and skill. It may be safe to say, though, that it's a practice that is only going to become more and more common. Roof coatings are not only a viable option, they are often a superior option for roof resto- ration situations. As the industry gains new technologies and contractors utilize decades of experience, roof coatings may gradually take more of a prominent role in the roofing market as a sustainable, affordable, and responsible system. CP High-Performance Roof Coatings "Roof coatings provide extremely high reflectivity, which keeps buildings cooler in the summer, reducing cooling expenses, and reduces the urban heat island effect," said Josh McKain of Progressive Materials. "Product base chemistry, viscosity, coverage rate, and roof size can all dictate the appropriate application method for each coating project," said The Garland Company's Steve Wolf. Keeping up with industry standards and regulations is important.

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