b'PMRAModified Assemblies Base Assemblies Figure 4: PMRA test matrix for thermal performance testing.the GHB (Figure 4). These assemblies incorporated various flow augmentation technologies, such as drainage layers and waterflow-resistantlayers,alongside differentboardgeometries,including shiplap joints, butt-edge joints, drainage channels and ribbed channels. In Figurewww.precisionmetals.ca4, the base assemblies refer to PMRAs without any kind of drainage or waterYour Metal Specialistsflow-resistant layers, while the modified Tested and certified by Roof Panelsassemblies include them in their design. On-Site Manufacturing - We come to youThe testing protocol first measured Proudly Made In Canada Pre-Notched - Saving labour $$thethermaltransmittance(U-value)PRODUCING QUALITY PRODUCTS FOR THE CONSTRUCTION INDUSTRY SINCE 1975ofPMRAsystemsunderdrycondi-tions (sometimes referred to as opaque (OPQ) conditions in this article) at two mean temperatures: 24C (TM24), as per NECB design criteria, and 14C (TM14), reflectingtypicalin-serviceconditionsSURREY LOCATION-604-594-6001|PARKSVILLE LOCATION-778-842-0281during wet spring and fall seasons.www.rcabc.orgl23Page 2 of 4'