Abstract: A method for making foam used in the manufacture of concrete, the method comprising, in an exemplary embodiment for making foam at the rate of one cubic foot per minute; (1) injecting water into a mixer, the water injected at a temperature not less than 62 degrees Fahrenheit, the water injected at the rate from 252 ounces per minute to 1,178 ounces per minute; (3) injecting a chemical into the mixer, wherein the chemical comprises a surfactant, a foam booster and a stabilizer, the chemical injected at a temperature of not less than 52 degrees Fahrenheit and at a rate of 22 ounces to 79 ounces per minute; and (4) injecting air into the mixer, the air injected at a pressure from 62 pounds-per-square inch to 135 pounds-per-square inch, and at the rate of from 19 cubic feet per minute to 32 cubic feet per minute; whereby foam is made in the mixer, and may be later used in the manufacture of concrete.