Attic Vent NFA Calculator

By Prashant Angyan on AppTrack Ninja.

Roof & Exhaust Sizing Tool

You're on a roof, the inspector wants to know if you have enough vent area, and you need the number now. Not later, not after you find service to load a website. Attic Vent NFA Calculator does the math for IRC Section R806.2. Enter your attic floor area, pick your code ratio (1:150 or 1:300) and intake/exhaust split (50/50 or 60/40), and get your answer. WHAT YOU GET - Total NFA (net free area) in square inches - Intake NFA and exhaust NFA, split the way you chose - How many standard soffit vents you need (based on 8x16 vents at 50 sq in each) - How many linear feet of ridge vent you need (ba…

Categories: Utilities, Business

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