Physical properties for an experimental fast-set spray polyurea were measured under various processing pressure and temperature conditions. Statistical analysis was applied to the physical property results, over a range of pressures and temperatures, to identify the relative influence of each on the physical properties. Often times the gauges used for measuring the process pressure for each component are not equal, due to various equipment configurations and physical characteristics of the spray system. Low and high-pressure differential conditions were created to study how the volumetric ratio and physical properties are influenced under these conditions. Further investigation and experimental data reveal the impact of mixing module nozzle diameter, nozzle orientation, and spray tip assembly, on the pressure differential and physical properties.