Building codes and roof shingle warranties require that sloped roofs be ventilated for the following reasons: it lowers summer attic temperatures, extending shingle life and cutting cooling bills; it rids the attic of excess moisture; and it reduces the chance of ice dams by keeping the roof surface cold in winter.
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The construction industry's leading researcher explains why what we think is true... More
In snow country, soffit-to-ridge venting is typically the most practical way to... More
Rhode Island builder Mike Guertin shares his strategies for beating leaks caused... More
In a perfect world, air retarders and careful insulation details would keep moisture out of the roof. But real buildings are never perfect, and venting is still the safest approach, especially in cathedral ceilings. More
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