insulation r value

What is Insulation R Value? Why is it Important? The purpose of insulation may seem rather obvious at first glance. Most people would say a home is insulated to prevent heat from escaping during the winter. While this is true, insulation is also tasked with keeping hot air from getting into a home during the summer months. The better this “barrier” performs, the less often you need to run your furnace or air conditioner. This, of course, corresponds to a…