The winds of change are upon us. These days it can be observed that building construction materials, techniques and designs are influenced by many drivers. This article discusses the use of spray-applied, medium density, closed-cell polyurethane foam (ccSPF) and compares off-site (in a controlled environment) applications with on-site spray application.

Fewer skilled tradesmen, less available energy, tighter build schedules, fewer quality checks and less concern with building envelope performance are off-set by the demand for more energy efficient designs, more resilient assemblies and more productivity.