Every insulation company in the country will tell you its work makes a house tighter. Almost none of them will show you two numbers taken the same way before and after, which is the only thing that would prove it. This page does the
A high blower door result feels like a report card. It is closer to a map. The fan has told you that a certain volume of air moves through your envelope under pressure; it has not told you where, and the where is the only part you can act
Ask three local companies what a blower door test costs, and you will get three different answers, and all three can be honest. The reason is that "blower door test" is not one product. It is the name of a piece of equipment that turns up in at
Whether you’re building new or remodeling a home or office, our insulation materials help you lower your energy bill and enhance air quality.
