Ridge Vent Problems. Box vents or power vents installed near a ridge vent can lead to inefficient airflow which can damage the roof deck and prematurely age asphalt shingles. In reality it all depends on how the wind blows convection has little to no effect and its never perfect.
The main problem I observe in creating a lack of proper air movement in attics is minimal or blocked soffit vents not a lack of roof venting. They have to have the GAF master elite roofing ridge vent on there with the roof and that would not blow water. Ridge vents can look nice and according to their manufacturers they help ventilate the attic but when it comes to keeping out wildlife theyre one of the easiest ways for them to enter your home.
This balanced system provides greater airflow than any other fixed ventand its the most attractive system.
The problem with gables is they short circuit the air flow PaulCP writes. The spaces between the grills are. Ridge Vent Versus Roof Vent. Coupled with a soffit vent and clear path for.