Question: I read your article in today's Chicago Tribune about vents. I contacted Cor-a-Vent with my question, and the representative failed to answer my question.

Carpenter and contractor Rob Robillard explains why he doesn’t like attic ventilation fans.

Q - I think I need better ventilation in my attic. Is there a problem with using a ridge vent and a power-ventilated fan in my attic?

QUESTION: I know I have to add some ventilation to my attic, but I don’t know quite how much. What’s the formula for ventilating the attic; that is, how much vent space is needed? ANSWE… ...