Most homes rely on passive attic ventilation, which works on the principle that heated air naturally rises. There are two types of roof vents that create a continuous passive air exchange from the ...

Improper roof ventilation can lead to poor air circulation, an overworked HVAC system, mildew and mold growth, or a buildup of ice dams in cold climates. Active roof vents harness wind with either ...

How to determine whether you need better attic ventilation. In the summer, good attic ventilation reduces heat buildu ...

When outdoor air is less humid than attic air, ventilation can also help reduce moisture buildup in the attic. There are two ways to vent a roof: by venting the attic, which is most common ...

typical static passive vent installation on a residential roof Flashing can also include metal added under roof vents to help direct water away from them. O’Brien said that roof vents are built ...

Areas along coastlines should avoid metal roofs. Coastal regions have increased air salinity ... attic ventilation, etc. However, most sources estimate that investing in a metal roof can save ...