Is it possible to have too much soffit intake? Currently my simple gable roof on a ranch home has 8 RVO38 vents but NO soffit intake vents (terrible!). Of course the attic space runs incredibly hot and is not doing me any favors. I need to get the venting improved pronto.

The soffit boards sag and have signs of water damage from previous owner's overflowing gutters, so I wanted to replace them with some t&g cedar and put in a continuous soffit vent. If that didn't help attic venting I would have a ridgeline vent installed. Would it potentially be bad to give myself all that soffit venting or could I try that and see if it is adequate before going to a ridgeline vent?

  • I have no experience in this area but have a similar situation - only have 6 intakes on a 2500sqf house. Thus looking to add some more as well. What are you setup like for exhaust on the roof ( # turbines, etc)? – InbetweenWeekends Aug 27 '15 at 0:45
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    sorry for delayed response, was on vacation. I've got approximately 10 RVO38 vents. I researched this more and it seems like unless it is allowing bug or animal ingress, there isn't actually such a thing as too much input down low. – matt Sep 23 '15 at 17:47

You generally want a balanced system with equal intake and exhaust areas, but if you can't balance the system, then there should be more intake area so none of the exhausts (usually near the peak) get back-drawn and act as intakes.

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