Showing results 1 - 7 of 7
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Retrofit an existing roof by installing rigid foam, new moisture and air control layers, new sheathing, and new cladding plus cavity insulation in the roof rafters to create an unvented attic
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The ventilation space in this vented over-roof keeps the roof cool to prevent ice dams over the unvented attic
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Wrong: Closed-cell spray foam roof insulation was not thick enough to meet IRC levels so the foam surface is colder than the dew point of the interior air and condensation formed on surface of the foam