What does the Density of foam mean?
Density is the measurement of the mass of the foam in pounds per volume in cubic feet. So, density of foam is expressed in pounds per cubic feet. Density is not a measure of firmness, stiffness, pore size or load bearing capacity. If you cut a piece of foam that is supposed to have a density of 1.7 pounds per cubic foot (PCF) into a 12 x 12 x 12 block, it will weigh 1.7 pounds. Density can be obtained from any sample size.
Density is the measurement of the mass per unit volume and it is measured in pounds per cubic foot. Density is sometimes confused with the firmness of a foam. If you took a 12″ x 12″ x 12″ block (1 cu/ft) of a foam that is supposed to be a 1.8# density, it should weigh 1.8# with a normal tolerance of plus/minus .5#.
