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July 24, 2017

On a rainy day in early June, Building Performance Institute (BPI) staff gathered at my home, affectionately known as "Q Casa," to see what goes into an energy audit. Several of us in Client Relations and Marketing regularly write [...]

July 13, 2017

Issues with Air Flow, Chemical Mixing, Thickness and a Single Thermal Boundary The popularity of spray foam insulation has steadily increased in recent years. Although it can cost approximately two to three times more than traditional batts [...]

July 5, 2017

The main purpose of roof ventilation is to keep the air space above the roof insulation at the same temperature as the outside air. In an unoccupied attic with the insulation on the floor, the air space between the floor and the roof requires [...]