The Ontario Building Code | Panel Cladding
9.27.10.3. panel Cladding
(1) OSB and waferboard applied in panels shall have all edges supported and treated with a primer or sealer.
(2) Not less than a 3 mm gap shall be provided between sheets in cladding described in Sentence (1).
(3) Vertical joints in cladding described in Sentence (1) shall be protected with batten strips or caulking when the OSB and waferboard joints are not matched.
(4) Horizontal joints in cladding described in Sentence (1) shall be lapped not less than 25 mm or shall be suitably flashed.
In Plain Language
Panel cladding of this material must be installed as set out in this article.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.