Definition
A ridge vent runs along your roof peak and lets hot, moist attic air escape naturally—like lungs for your attic. Blocked or damaged ridge vents cause moisture buildup that destroys your roof and promotes mold.
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Proper attic ventilation extends roof life and prevents moisture buildup that promotes mold growth and wood rot. Ridge vents provide exhaust for attic air, while soffit vents provide intake. This natural convection cooling reduces summer heat accumulation and winter moisture. Blocked, damaged, or improperly installed ridge vents compromise ventilation effectiveness. Inspectors verify ridge vent presence and condition during roof inspections.
Pro Tip
Make sure your ridge vents aren't blocked by insulation, and verify soffit vents are clear. Annual attic checks help catch ventilation problems early.
Example
A home in Minnesota lacked adequate ventilation due to blocked ridge vents and missing soffit vents. Excessive moisture accumulation in the attic promoted mold growth and premature roof deterioration. Installation of a properly sized ridge vent and additional soffit vents improved ventilation and reduced attic moisture.