Best Attic Ventilation Method

Of net free area for every 150 sq.

Best attic ventilation method.

The most common method is the static method. These vents allow outside air to enter the attic at the lowest point of the roof along the underside of the eave. This method relies on convection which is a mode of heat transfer that is caused by the tendency of warmer air to rise. Cut the shingles for roof vents.

There are two methods used to ventilate attics. Mark attic roof air vent locations. Both can be added to uninsulated attics or layered over existing material. 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.

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. How to install roof vents. The best form of attic ventilation for your home is a balanced system where the intake vents are separate from the exhaust vents. From the roof s peak.

Of attic floor space. Soffit vents are intake vents located under the outside eaves of your home. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic. In other words air flows through the attic space naturally without the use of mechanical means.

Cut the hole for roof vents. Center nails between rafters 18 in. Best ventilation is open soffit venting to a open vented ridge vent. For this kind of system you need soffit vents and ridge vents.

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. For diy attic insulation you ve got two choices. Once a contractor knows the attic square footage the amount of necessary attic ventilation can be calculated. Once you ve decided which type is best for you examine the material options and prices to home in on the right product.

Drive nails up through the sheathing and. 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. The code minimum for attic ventilation in the 2012 irc section r806 roof ventilation 1 is as follows.