All roofs eventually leak—it is just a matter of when and where. Nevertheless, the hope is that new roofing systems do not leak right from the start. It is critical to verify the watertightness of roofing, especially if it is to be covered with ballast or a vegetated roof assembly.
From a design standpoint, there are many different criteria, situations, and owner temperaments capable of affecting the outcome of a roofing installation. Roofing contractors have unique insight into the real-world factors design professionals should consider in order to make the installation as smooth and hassle-free as possible.
North America’s first product category rule (PCR) for roof coatings has been created by NSF International and the Roof Coatings Manufacturers Association (RCMA). This PCR, which covers fluid-applied and adherent coatings used either for roof maintenance/repair or as part of a roof covering system or assembly, offers the industry a number of benefits.