ASTM C1780-20 PDF Download

ASTM C1780-20 is a standard practice that provides accepted procedures for the installation of cement-based adhered masonry veneer in residential and commercial construction. It is intended to complement the specific installation instructions provided by manufacturers of these veneers and recognized building codes, rather than replacing them. The standard covers the installation of cement-based adhered masonry veneer units on exterior and interior walls, columns, landscape structures, and other suitable structures.

This practice is limited to the installation of units and does not cover all flashing or moisture management requirements. Additional flashing and moisture management requirements should be referred to the applicable building code and project documents. The standard also references two important notes. Note 1 highlights the availability of the National Concrete Masonry Association (NCMA) publication "Installation Guide and Detailing Options for Compliance with ASTM C1780 for Adhered Manufactured Stone Veneer," which provides generally accepted methods and details for installation and flashing. Note 2 specifies that this standard is specifically developed for the installation of cement-based veneer units made from wet-cast or dry-cast concrete, and refers to Guide C1242 for the installation of adhered natural stone veneer.

It is important that all workmanship and materials related to the installation of cement-based adhered masonry veneer units comply with the requirements of the contract documents and building code jurisdiction. It should be noted that the notes and footnotes included in the standard provide explanatory material and are not considered requirements of the standard, except for those in tables and figures.