Insulation is an important step in the building process and is an energy-efficient technology that, once manufactured, requires no energy to save energy. Not only does it save energy, but it also lasts for the life of the building and unless it is damaged, it will never have to be replaced. Instead of reducing the amount of energy they use, like most “energy efficient” products, they actually save energy from being wasted.
The act of insulating a house generally isn't an eye catching step seeing as once the house is completed its hidden, but it is a truly important step in the longevity and efficiency of your home.