Maintenance
What is Ventilation Check?
Roofing Glossary · Maintenance
Definition
An assessment of the attic ventilation system to ensure adequate airflow from intake (soffit) vents to exhaust (ridge) vents. The building code standard is 1 square foot of net free area per 150 square feet of attic floor, reducible to 1:300 with a balanced intake/exhaust system. Poor ventilation causes moisture buildup, shingle premature aging, ice dam formation, and excessive summer heat load. A ventilation check is included in a professional roof inspection.
Related Roofing Terms
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Ridge VentA continuous or segmented ventilation product installed along the entire length of the roof ridge th...
→SoffitThe finished underside of the roof overhang that spans from the exterior wall to the fascia board. S...
→Ice DamA ridge of ice that forms at the eave of a roof when heat from the interior melts snow on the warmer...
→CurlingA shingle defect where the edges or corners of shingles turn upward (cupping) or the center of the s...
→CuppingA specific form of shingle distortion where the edges of a shingle curl upward, making the center ap...
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