Definition
A balanced system of intake and exhaust vents that keeps attic air moving. Good ventilation extends shingle life, controls moisture, and is a frontline defense against ice dams.
Why this term matters for homeowners
Home-performance terms map to attic ventilation, insulation, energy bills, and how the systems above your ceiling protect the roof's lifespan.
- Use this term to ask better follow-up questions during estimates.
- Look for this language in Learn and Evaluate guides to connect definition to decisions.
- Confirm how this applies to your specific roof age, pitch, and home layout.
Related pages
Category: Home Performance