Bath Vent Codes

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  • 1 cfm per square foot. Not. [1]
  • Seed Eco-Home Floor 1 has a 5x9 bathroom = 45 sf.
  • Not! The code requirement is a minimum of 20 cfm continuous, or 50 cfm intermittent. IRC - [M1507.4] - [2]
    • Continuous means running 24/7
    • Code does not stipulate bathroom size.