Best Attic Ventilation Method

Cut the shingles for roof vents.

Best attic ventilation method.

The most common method is the static method. From the roof s peak. For diy attic insulation you ve got two choices. 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.

These vents allow outside air to enter the attic at the lowest point of the roof along the underside of the eave. 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. There are two methods used to ventilate attics. The code minimum for attic ventilation in the 2012 irc section r806 roof ventilation 1 is as follows.

Mark attic roof air vent locations. Loose fill or batt the common term for blanket insulation. Once a contractor knows the attic square footage the amount of necessary attic ventilation can be calculated. 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.

Cut the hole for 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. Both can be added to uninsulated attics or layered over existing material. 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. Of attic floor space. While most vents are installed at the top of the roof soffit vents are installed at the bottom edge just under the eaves.

How to install roof vents. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. 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.

Of net free area for every 150 sq. Drive nails up through the sheathing and. Ridge vent must me installed per the manufactures instructions.