1. Rib lath or expanded metal stucco mesh shall be
   1. copper-alloy steel coated with rust-inhibitive paint after fabrication, or
   2. galvanized.
2. Woven or welded wire mesh shall be galvanized.

1. Sheathing need not be provided beneath stucco where not less than 1.19 mm diam galvanized wire is applied horizontally to the framing at vertical intervals of not more than 150 mm, or where paper-backed welded wire metal lath is used.

1. Stucco lath shall conform to Table 9.28.4.3.

Table 9.28.4.3.
Stucco Lath
Forming Part of Sentence 9.28.4.3.(1)

Notes to Table 9.28.4.3.:
(1) See Note A-Table 9.28.4.3.

1. Stucco lath shall be held not less than 6 mm away from the backing by means of suitable self-furring devices.

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.

1. Stucco lath shall be fastened in conformance with Subsection 9.27.5.
2. Fasteners on vertical surfaces shall be spaced not more than
   1. 150 mm o.c. vertically and 400 mm o.c. horizontally, or
   2. 100 mm o.c. vertically and 600 mm o.c. horizontally.
3. Nailing patterns other than those required in Sentence (2) are permitted to be used provided there are at least 20 fasteners per square metre of wall surface.
4. Fasteners on horizontal surfaces shall be spaced not more than
   1. 150 mm o.c. along the framing members when members are spaced not more than 400 mm o.c., and
   2. 100 mm o.c. along members when members are spaced not more than 600 mm o.c.