Roof Ventilation Calculator

Understanding Roof Ventilation

Proper roof ventilation is crucial for maintaining your home's energy efficiency and preventing moisture problems.

  • Net Free Area (NFA) Total unobstructed area through which air can flow.
  • Balanced System Equal intake and exhaust ventilation.
  • Climate Factors Different requirements for different climate zones.
  • Vent Types Various options for different roof styles.

Ventilation Types

Ridge Vents

Continuous ventilation along roof peak.

Soffit Vents

Intake ventilation under eaves.

Gable Vents

End-wall ventilation for traditional designs.

Powered Vents

Mechanical assistance for problem areas.

Installation Tips

  • Proper Placement Strategic positioning for maximum airflow.
  • Insulation Clearance Maintain proper space for airflow.
  • Weather Protection Install with proper flashing and sealing.
  • Maintenance Access Allow for future cleaning and inspection.

Benefits Guide

  • Energy Savings Reduced cooling costs in summer.
  • Moisture Control Prevents mold and wood rot.
  • Ice Dam Prevention Reduces winter roofing problems.
  • Extended Roof Life Protects roofing materials.