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Third-Party Inspectors application processes need to be made. For example, heat and high relative humidity can dramatically afect the recoat window for certain materials. An onsite third-party inspector who is monitoring ambient conditions can address this issue with the applicator before a crucial recoat window is missed. Complex Products To protect the substrate, water and wastewater structures must be coated and lined with products that can ew N assessment will have been performed, and the specifcations will have been written according to the results and recommendations of the condition assessment. Damaged areas of concrete must be repaired, and a proper surface profle must be achieved. Depending on the condition of the concrete and the type of coating that is to be applied, the surface profle standards can vary from job to job. A trained eye is required to ensure that the substrate is adequately prepared and the proper surface profle is achieved. A third-party inspector can identify any areas where the surface profle may be too high or too low before the coating system is applied. He or she is able to ensure that the surface preparation process is uniform throughout the entire job and meets the specifcation requirements. Simple. Durable. Accurate. Ambient Conditions Concrete is a living, breathing substrate and is afected greatly by ambient temperatures and relative humidity. Without constant monitoring of temperature and humidity levels, coating systems can be applied in less-than-ideal conditions. If there is too much relative humidity, vapor can become trapped in between the concrete substrate and the coating, and it can cause pinholes that can ultimately lead to the failure of the coating system. In certain instances, dehumidifcation of certain areas of the project, or of the project as a whole, may be required. Along the same lines, extreme temperature variation during a job can cause thermal stresses between the concrete and coating system. On some jobs, the daytime highs can reach 120° F (49 °C), with the lows dropping to 60° F (16 °C) in the evening. A third-party inspector can monitor and document ambient temperature and relative humidity and perform tests on the substrate to determine whether modifcations to the surface prep and/or coating Now Advanced models come with WiFi and PosiSoft Mobile for complete portability and expanded functionality. Made in U.S.A. Advanced model www.PosiTector.net 1-800-448-3835 www.defelsko.com The Measure of Quality DeFelsko Corporation • Ogdensburg, New York +1 (315) 393-4450 • techsale@defelsko.com Write in Reader Inquiry #34 COATINGSPRO JANUARY 2014 35