Foam.. a double insulation material with the ability to insulate heat, water, and moisture. Foam is suitable for all types of surfaces, whether concrete, metal, or cement. Foam material has no harms, does not contain toxic substances, and is safe.. Thermal foam, what is the benefit of foam? Foam is used in waterproofing roofs, surfaces, and tanks to prevent water leakage. Foam waterproofing protects buildings from water leaks resulting from rain and leaks from sewage pipes and various water networks. Foam is used to insulate water tanks to reduce the effect of moisture on the tank walls and prevent the formation and spread of algae in the water. It is also used for galvanized sheds, concrete, and tiles, with a 15-year warranty, accredited by the Water and Electricity Company and insurance.