ASTM C1861-21a PDF Download

ASTM C1861-21a is a standard specification that outlines the minimum requirements for lathing and furring accessories, as well as fasteners, used in the installation and application of interior and exterior Portland cement-based plaster. The standard covers the components that are necessary for lathing and furring installation, cement plaster application, and to ensure the functionality of the completed stucco cladding assembly.

The scope of this specification focuses on defining the quality and performance criteria for lathing and furring accessories and fasteners. These components are crucial in providing support, stability, and proper attachment for Portland cement-based plaster assemblies. The standard aims to ensure that the materials used for lathing and furring are of sufficient strength and durability to withstand the stresses and loads imposed during installation and the life of the plaster system.

By specifying the minimum requirements for these accessories and fasteners, ASTM C1861-21a helps to ensure the proper functioning and longevity of the Portland cement-based plaster system. Compliance with this standard helps to maintain the integrity of the plaster assembly and ensures that it meets the necessary regulatory and safety requirements.