Revised 2016
Yes. ASTM C1670/C1670M, Standard Specification for Adhered Manufactured Stone Masonry Veneer Units, addresses the minimum requirements for manufactured stone veneer units and ASTM C1780, Standard Practice for Installation Methods for Adhered Manufactured Stone Masonry Veneer, covers requirements for the installation of adhered manufactured stone veneer systems.
ASTM C1670/C1670M covers the minimum product requirements for the units used in adhered manufactured stone masonry veneer systems. This standard covers acceptable materials, physical requirements, dimensional allowances, and finish and appearance requirements for the units. Table 1 shows a short summary of the physical requirements for manufactured stone veneer units.
Table 1—Summary of ASTM C1670/C1670M-16 Physical Requirements
Additionally, the units shall have an average thickness of no more than 2.625 inches (67 mm), with no face dimension greater than 36 inches (915 mm). The total face area of any unit shall not exceed 5 ft2 (0.5 m2).
ASTM C1780 covers standard installation practices for adhered manufactured stone masonry veneer systems. This includes requirements for materials used, acceptable job conditions, and recommended installation practices over several different substrates.
The materials section of the Practice includes units, lath, acceptable mortars, mortar admixtures and pigments, lath fasteners, weep screeds, and related flashing materials. For job conditions, the Practice provides information on how to handle hot and cold weather construction requirements. The substrates covered in the Practice include:
- Masonry
- Wood/Metal Framing
- Sheathed Frame Substrate
- Existing Cured Stucco (as a replacement for scratch coat)
- Cast-in-Place Concrete or Precast Concrete Tilt-up Walls
For each of these substrates, surface condition, water resistive barrier installation, lath installation, scratch coat, and stone installation are covered.
Additional information on the installation of manufactured stone veneer systems is also available in the Installation Guide and Detailing Options for Compliance with ASTM C1780 for Adhered Manufactured Stone Veneer.
Both ASTM standards are available through ASTM at www. astm.org.