The Ontario Building Code | Application of Stucco Lath
9.28.4.5. application of Stucco Lath
(1) stucco lath shall be applied with the long dimension horizontal.
(2) Horizontal and vertical joints in stucco lath shall be lapped not less than 50 mm.
(3) End joints of stucco lath shall be staggered and shall occur over framing members.
(4) External corners of stucco lath shall be reinforced with a vertical strip of lath or reinforcing extending not less than 150 mm on both sides of the corner, or the lath or reinforcing shall extend around corners not less than 150 mm.
In Plain Language
Stucco lath must be applied as set out in this article, covering overlap, fastening pattern, and orientation.
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.