What type of foam is most effective for Class A fires?

Class A foam is specifically formulated to deal with Class A fires, which involve ordinary combustible materials such as wood, paper, and textiles. This type of foam improves the extinguishing capability of water by reducing the surface tension, allowing it to penetrate deeper into burning materials.

Class A foam is designed to enhance the wetting ability of water, enabling it to saturate the burning materials more effectively. This improved wetting helps to extinguish the fire more rapidly and can also prevent re-ignition by cooling the materials involved.

The unique properties of Class A foam, including its ability to create a blanket over the materials, make it particularly advantageous in combating Class A fires, aiding in both suppression and prevention of the fire's spread.