| 9.10.11.2. |
Firewalls Not Required
- Except as stated in Sentence (2), a party wall on a property line of a building of residential occupancy need not be constructed as a firewall, provided it is constructed as a fire separation having not less than a 1 h fire-resistance rating, where the party wall separates
- two dwelling units where there is no dwelling unit above another dwelling unit,
- a dwelling unit and a house with a secondary suite including their common spaces, or
- two houses with a secondary suite including their common spaces.
- Where a building of residential occupancy contains more than 2 houses, a party wall that separates any 2 adjacent houses with a secondary suite from the rest of the building shall be constructed as a firewall to create separate buildings each containing no more than 2 adjacent houses with a secondary suite.
- The wall described in Sentence (1) shall provide continuous protection from the top of the footings to the underside of the roof deck.
- Any space between the top of the wall described in Sentence (1) and the roof deck shall be tightly filled with mineral wool or noncombustible material.
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