Ok, I’m having a new roof installed. I just had my soffits repaired and soffit vents installed. I’m having a ridge vent installed on the roof which will replace two aging turbines. I also have two gable vents at each end of the roof.
Do I close off the gable vents so that the ridge vent will pull air from the soffit vents? I see lots of debate on this. My brother is a mechanical engineer, who says the gable vents should be closed, so that the ridge vent pulls from the soffit vents. The roofers who quoted me on the job said they had heard of this theory, but thought the more ventilation the better, so they voted for leaving the gable vents open.