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visited attic of a house built in 1972 in columbus ohio. problem is condensation and frost on underside of roof sheathing in attic. air turnover is 6.6. attic floor has been sealed and all known penetrations from conditioned space to attic have been sealed. attic has five soffit vents in front and 5 in back. homeowner added three aura vents on top of roof. link following if anyone wants info…
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