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Question DetailsAsked on 10/8/2017

I just had a ridge vent installed. Should the gable vents be sealed ? I don't have soffit vents.

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Your ridge vents (which exhaust the warmer air in the attic in most wind conditions and during static conditions) need an air inlet source of at least as great an airflow capacity - generally by providing equivalent wide open vents (insect screened) at the eaves or soffits. Without inlet vents the ridge vents will tend to pull a partial vacuum on the attic, pulling air from wherever it can - which in the normal house which has not been totally attic penetration sealed, means through walls and cable and pipe penetrations and electrical boxes/lights in the underlying ceiling - pulling household "conditioned space" air (heated or air conditioned) into the attic and out to the outside - so as far as energy conservation goes can actually make the situation worse, though they will cool the attic a bit.


Every effort should be made to provide eave/soffit ventilation - in which case the gable vents should be closed off. However, until that time, I would leave them open to provide intake airflow, even through the distribution will be far from ideal.


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Answered 1 year ago by LCD




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