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Ontario Building Code

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Volume 1

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Division B

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Part 6

6.3.1.2. Crawl Spaces and Attic or Roof Spaces

Feb 03, 2026© King's PrinterJan 16, 2025

(1)

Unconditioned and unoccupied crawl spaces and attic or roof spaces shall be ventilated by natural or mechanical means as required by Part 5. (See Note A-6.3.1.2.(1))

Mentioned in

  • 6. Heating, Ventilating and Air-Conditioning
  • A-6.3.1.2.(1) Ventilation and Venting of Crawl Spaces and Attic or Roof Spaces.

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