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Roof ventilation snow penetrations

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Minimizing the Adverse Effects of Snow and Ice on Roofs

In a cold climate, the primary purpose of ventilation is to maintain a cold roof temperature to avoid ice dams created by melting snow and to vent any moisture that moves from the conditioned living space to the attic. (See Energy Smart Details in FHB# 218 for more on ice dams. )



PA-1101: A Crash Course in Roof Venting Building Science

In a cold climate, the primary purpose of ventilation is to maintain a cold roof temperature to avoid ice dams created by melting snow and to vent any moisture that



5 Myths about Attic Ventilation - HomeAdvisorcom

Home Five Attic Ventilation Traps to Avoid. Steep Slope Roofing Five Attic Ventilation Traps to Avoid buildup in the colder months. Additionally, attic ventilation is a key ingredient in the defense against ice dams in snow and ice climates. If these penetrations into the attic are not properly sealed andor insulated they can cause

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