Replacing stocco on front of house. Stucco_-_exterior plaster. Installation of these materials shall be in compliance with astmc926 and astmc1063 and the provisions of this code. R703. 6. 1 lath. All lath and lath attachments shall be of corrosion- resistant materials. Expanded metal or woven wire lath shall be attached with 1-1 2-inch-long (38 mm), 11 gage nails having a 7 16-inch (11. 1 mm) head, or 7 8-inch-long (22. 2 mm), 16 gage staples, spaced at no more than 6 inches (152 mm), or as otherwise approved. Contact inspector at district office for wall inspection prior to starting work.