# Roof ventilation calculator: give your roof room to breathe.

Mammoth Roofing & Exteriors · https://mammothroofs.com/blog/roof-ventilation-calculator/ · (210) 934-9074

Start in the attic. Use this calculator as a conversation starter, then check the ventilation requirements for your home.

_4 min read · Updated September 17, 2026_

**Key points**

- The condition of a roof takes more than a look from the street.
- The Hunter-Gatherer inspection starts in the attic.
- The written Roof Grade comes with 75–150 photos.

## The Roof Grade starts in the attic.

Intake, exhaust and the condition underneath are part of the inspection.