Which is a benefit of Class A foam?

Class A foam is specifically designed to enhance the effectiveness of water when fighting fires involving ordinary combustibles like wood, paper, and textiles. One of its key benefits is that it reduces the surface tension of water, allowing it to penetrate deeper into combustible materials. This penetration is crucial in extinguishing fires more effectively because it enables the water to reach the burning material more efficiently.

By lowering the surface tension, Class A foam creates a solution that can spread out and soak into fuels that would otherwise resist water. This property not only improves the cooling effect but can also aid in the suppression of embers and hot spots, which is vital for extinguishing fires completely and preventing reignition. This attribute makes Class A foam a highly effective tool for firefighters dealing with various materials that are prone to combustion.