Class A foam agents are specifically designed to combat fires involving ordinary combustible materials, like wood, paper, coal, rubber, and plastic by making water more effective. The agents reduce the surface tension of water providing superior wetting and penetrating characteristics. This allows the solution to penetrate deep into the char of deep seated fires, promoting cooling and making the Class A fuel less combustible. The expanded foam solutions also create a dense foam blanket that provides an insulating barrier between the fuel and the air. The SILV-EX PLUS extended drain time provides longer surface wetting and cooling of the fuel and reduce the risk of ignition or reignition. In addition, foams make water five times more effective on Class A fires and cling to vertical surfaces, providing structure protection.