The Ontario Building Code | Nails and Staples
9.28.3.2. Nails and Staples
(1) Nails for stucco lath or reinforcing shall be not less than 3.2 mm diam with a head diameter of not less than 11.1 mm.
(2) Staples for stucco lath reinforcing shall be not less than 1.98 mm diam or thickness.
(3) Staples and nails for attaching stucco lath or reinforcing to vertical surfaces shall be of sufficient length to penetrate 25 mm into framing members or to the full depth of the sheathing where the sheathing is used for attachment.
(4) On horizontal surfaces nails for stucco lath or reinforcing shall be not less than 38 mm long.
9.28.4. stucco Lath
In Plain Language
Nails and staples used to fasten stucco lath must meet the requirements 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.