Attic Ventilation Intake Vents

Ventilation and attic vents.

Attic ventilation intake vents.

Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof. 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. Hot air exhaust vents located at the peak of the roof allow hot air to escape. Intake vents help exhaust vents reduce attic heat more effectively.

Soffit vents are one of the most popular intake vent styles. Outside air enters the attic space through soffit or eave vents rises through the attic space as it warms and exits through vents that are positioned at or near the top. 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. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.

Intake vents draw cooler outside air into the home. A new roof is more than just shingles. Help remove excess heat and moisture to protect your roof from premature deterioration. For this method to be most effective approximately equal amounts of ventilation should be placed at the soffits or eave level and at or near the top of the attic space.

As cooler air comes in it forces the warmer air to keep rising up and out. Continuous un blocked soffit or eaves intake venting combined with continuous roof ridge venting or equivalent area if the building framing does not permit a ridge vent are needed to avoid ice dams attic condensation attic mold rot or insect damage from accumulating attic moisture. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.