Too Much Soffit Attic Ventilation

Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space.

Too much soffit attic ventilation. The two main dangers associated with too much ventilation involve roof damage and increased utility. A wind turbine catches the wind and spins a fan which pulls hot air outside. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. Can you have too much ventilation in your attic.

As a certified licensed home inspector it is not correct to say too much ventilation is bad for an attic unless rain moisture is getting in. Venting a homes attic is a very important best building practices will say 50 at the ridge and 50 at the soffits unobstructed. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge. An attic s intake vents are most commonly installed directly in the soffit either as individual vents spaced every few feet or as one continuous perforated soffit running the entire length of.

With a power switch or a thermostat installation an attic fan can be turned on to let hot air from the attic out. 1 being out of balance. For most of us the attic is a place to store clothes luggage and old family photos but for energy researchers it s a hot topic of discussion. I live in north carolina.

The soffit vents allow convective air movement from the soffits of the residence to the ridge vent. Is this too much ventilation. If the attic ventilation system is not a balanced combination of intake vents installed in the soffit under eave or at the roof s bottom edge and exhaust vents installed at or near the roof s peak the attic ventilation system will not be efficient and effective. Soffit vents help increase the airflow are easy to install and only cost about 3 per 8 ft.

In addition insulation baffles must be installed at the point where the attic floor meets the roofline to prevent the attic insulation from migrating into the cavities and restricting the airflow from the soffit vents. Attic ventilation keeps the air moving and stops mold from growing but too much ventilation can be just as bad as having none. My house has soffit vents on the eaves gable vents on each end of the house and a ridge vent. Enter square footage calculate or enter the square footage of the attic or area to be vented.

Dangers of too much ventilation.