Intake ventilation brings fresh air into the attic. It is usually located low on the roof system, often through vented soffits or other roof-edge intake products.
Why It Matters
Ventilation works best when intake and exhaust are balanced. Intake air helps push warm, humid air out through exhaust vents near the top of the roof.
Common Problems
Common problems include painted-over soffit vents, insulation blocking airflow, too little vented soffit area, and exhaust vents installed without enough intake.
Exterior Echelon Notes
Exterior Echelon reviews intake ventilation when evaluating roofs, soffits, and attic airflow because it affects shingle performance, moisture control, and winter ice-dam risk.
