Learn how to balance the ridge and eaves vents for effective attic ventilation. More
Why insulating and air-sealing the envelope rather than ventilating the roof will... More
Why dewpoint calculations are important before using SPF insulation underneath the... More
A short lesson on the main driving forces that push attic air up and out of the... More
A house with soffit vents also have either a ridge vent or gable vents, but not... More
There are ways to retrofit eaves ventilation even when there's no soffit, thanks... More
Without soffit or roof vents, will a porch roof get hot enough to shorten the life... More
Q: Our insulation subcontractor advises us to install dense-pack cellulose in the rafter bays over a cathedral ceiling, without ventilation baffles, and the local building inspector approves. If we don’t ventilate under the roof sheathing, what happens to More
Q: I am trying to plan the best way to ventilate a hipped roof above an attic. Since the ridge is very short, ridge venting is not an option. I was planning to install powered exhaust ventilation. How should I size the fan? More
