Are you ready to insulate? The advantages of foam over fiberglass are many. First, foam does not allow mold to grow. Since air cannot penetrate the closed cell of foam, mold will never have what it needs to grow. Secondly, fiberglass is a perfect nest material for rodents. Foam discourages rodents. Third, Foam will never loose its' R value. Since water cannot penetrate it, your foam will have the same insulation value 60 years from now that it has today. There is no question about it. Foam is your best solution for insulation in your home or your commercial building.