Fire Safety Science Digital Archive

In this note, some of the features of the behaviour of foam on a vertical surface are discussed, and an estimate is made of the velocity at which a layer of foam will slide. This velocity is shown to be less than that of a water film giving equivalent protection against radiant heat. By applying water as foam, it may therefore be possible to disperse it over a greater area and thus use it more economically in the protection of the surface from radiant heat.