[Home is in Georgia]
I made the mistake of installing ridge vents on my home last year without any soffit vents. I have since learned that doing so will actually cause the air to be drawn from all accessible places, including a leaky 1941 ceiling.
I realize what I should have done was to install drip edge venting but am unable to do so retroactively (I think). Since I have learned of this mistake, I have air sealed the ceiling. The attic currently has 4 gable vents located on all 4 walls of the house but they are located at the peaks which to my understanding, limits the air flow across the bottom of the decking and thus preventing proper cooling.
My question is this; I have an enclosed porch which has a ceiling that is a part of the attic. It has no insulation over it and I was wondering about the benefits of installing a large vent in the ceiling to allow for more air flow to the ridge vents. I realize that this will still not provide the same benefits as soffit vents and baffles in cooling but I figured it may reduce the amount of air being drawn from inside the house and also allow for less heat buildup in the attic.
Your insights are greatly appreciated.