Gun-applied foam adheres strongly to most surfaces, including concrete, wood, plaster, and insulation boards; it exhibits high adhesion upon application. Adhesion may be poor on surfactant-based surfaces such as polyethylene, polypropylene, and PTFE.
Current spray-applied foam formulations are produced with propellants that do not contain CFC/HCFCs, which harm the ozone layer; this reduces environmental impact while maintaining insulation performance.
Application with a spray gun ensures controlled dosing and low expansion; filling the gap gradually and cleaning after the excess dries gives the best results. Professional spray gun use provides both speed and precision.