Does water mist work with foam additives, and what are the benefits?
Most water mist systems will work with foam additives. AFFF additive does not provide noticeable effect on fuel spray fires. However, AFFF additive does in most cases improve the performance for surface fires. AFFF tends to reduce the evaporation of water droplets. Therefore, AFFF additive may decrease fire protection performance for enclosure fires because shielded fires are mainly extinguished by water vaporization. On the other hand, foam may flow in to shielded areas and provide suppression of surface fires. AFFF should therefore only be applied on the recommendations of the manufacturer of the water mist system.
