ASTM Standards for Non-Metallic Lath, Metal Lath and Lathing Accessories

Non-metallic or metal lath? The choice is yours. The standards differ.

Published in Walls & Ceilings
By Herman Guevara and Bill Egan

Exterior Portland cement-based plaster (or stucco) is a common exterior wall cladding used on virtually all types of construction and buildings. Stucco can be applied directly to solid plaster bases such as concrete, concrete masonry units, etc., or a lath which can be a non-metallic or metal material.

Lath is used primarily as a means of attachment and reinforcement particularly when stucco is used on framed construction…