Gable Vents Vs Roof Vents

They range in style from 6 inch round stainless steel vent covers that are placed in the soffit between each rafter to continuous vents that run the entire length of the soffit.

Gable vents vs roof vents.

When the wind is perpendicular to the gable the cooler outside air enters the gable vent and drops to the floor of the attic before rising to exit at the other end again leaving zones of dead air right. This air then flows up the roof deck and out the ridge vent. Since we had the new roof we have had issues with ice dams as well as uncomfortable temperatures on the second floor of the house cold in winter and very hot in summer. Without any air movement temperatures in the attic soar in summer and plunge in winter.

These vents are installed in the soffit the enclosed portion under the roof overhang and permit air to flow up under the roof and into the attic. A new roof was installed 10 years ago at which time a ridge vent was added along all ridges at the suggestion of the roofer. It will run the entire length of the gable roof peak. Ridge vents are much easier to install because they sit on top of the roof at the peak.

The gable end vents were not closed up. Many roofing contractors discourage using a gable vent with ridge vent and soffit vents because a gable vent interrupts the proper airflow and can cause the air current to flow perpendicular and unevenly throughout the attic. Installing functional gable vents can take some time as you will need to fit them into the gable end of the roof. Gable vents are usually chosen for their visual appeal but can also serve as an exhaust vent.

Without ventilation unfinished attic spaces can end up having stagnant air. On a house with eaves and gable vents but no ridge vents wind perpendicular to the ridge tends to create air flow along the floor of the attic but leave hot dead air in the roof peak left.