Attic Ventilation System Standards

Intake vents located at the lowest part of the roof under the eaves allow cool.

Attic ventilation system standards.

See the benefits of attic ventilation a new roof is more than just shingles. 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. Code requirements the international building code 2012 edition ibc 2012 requires enclosed attics and enclosed rafter spaces formed. These fans may be controlled by a switch or a thermostat which detects heat build up in the attic space and automatically exhausts the attic space.

Fans and vents may be installed on the roof system that will draw the air out of the attic space and exhaust it to the exterior. Anyone involved with residential roofing should become familiar with the purpose of attic ventilation and understand how to achieve an effective ventilation system while meeting building code requirements. Attic venting serves an important purpose and is key to a well performing roof system. 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.

Typically building codes include minimum requirements applicable to attic ventilation. Whole house fans powered attic fans. The roofing industry also has practical guide lines for attic ventilation.