Lapped Strip Siding
(1) Hardboard applied in horizontal lapped strips shall have not less than a 5 mm gap provided at the butted ends, which shall be caulked or otherwise protected with suitable mouldings.
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(2) The horizontal joints of siding described in Sentence (1) shall overlap not less than 1 mm per 16 mm width of siding board but not less than 9.5 mm for matched joint siding or 25 mm for lapped siding.
Article 9.27.9.4. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only
