Best Attic Ventilation Method

One last thought attic ventilation is not there to get rid of heat it is there to get rid of excess moisture accumulating from the home.

Best attic ventilation method.

If your home is fitted solely with small gable end vents or a ventilator high in the roof you might want to consider adding soffit vents to increase airflow. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic. For this kind of system you need soffit vents and ridge vents. Once a contractor knows the attic square footage the amount of necessary attic ventilation can be calculated.

Mark attic roof air vent locations. There are two methods used to ventilate attics. Best ventilation is open soffit venting to a open vented ridge vent. Of net free area for every 150 sq.

From the roof s peak. For diy attic insulation you ve got two choices. Drive nails up through the sheathing and. How to install roof vents.

Center nails between rafters 18 in. Cut the shingles for roof vents. This method relies on convection which is a mode of heat transfer that is caused by the tendency of warmer air to rise. These vents allow outside air to enter the attic at the lowest point of the roof along the underside of the eave.

While most vents are installed at the top of the roof soffit vents are installed at the bottom edge just under the eaves. The most common method is the static method. Cut the hole for roof vents. The code minimum for attic ventilation in the 2012 irc section r806 roof ventilation 1 is as follows.

Of attic floor space. Soffit vents are intake vents located under the outside eaves of your home. The best form of attic ventilation for your home is a balanced system where the intake vents are separate from the exhaust vents. In other words air flows through the attic space naturally without the use of mechanical means.

Mixing or combining two or more different types of exhaust vents ridge vents wind turbines roof louvers gable louvers roof mount power fans and gable mount power fans on the same roof above a common attic can actually short circuit the attic ventilation system. Ridge vent must me installed per the manufactures instructions. Soffit vents are sometimes installed alone to increase the flow of fresh air into an attic space but they are most effective when used in combination with ridge or box vents.