ASTM C1670/C1670M is the ASTM standard for Standard Specification for Adhered Manufactured Stone Masonry Veneer Units. It provides a technical framework for identifying and evaluating these veneer units so they can be used with greater consistency in building applications. As a product-page reference, ASTM C1670/C1670M helps buyers, specifiers, and manufacturers understand the core requirements associated with this type of masonry veneer and supports more reliable selection, quality control, and compliance decisions.

Purpose of ASTM C1670/C1670M

The purpose of this standard is to define the specification basis for adhered manufactured stone masonry veneer units. In practical terms, it helps establish a common reference for product characteristics and acceptance expectations for units intended to function as adhered veneer. ASTM C1670/C1670M is useful when a project needs a documented standard to guide product review, procurement, and technical comparison. It supports a more uniform approach to evaluating manufactured stone veneer products before they are selected for use.

Common use cases of ASTM C1670/C1670M

This specification is commonly used when manufactured stone masonry veneer units are being selected, supplied, or reviewed for adhered veneer applications. It is relevant to product manufacturers, distributors, specifiers, and project teams that need a recognized ASTM standard for material descriptions and quality expectations. ASTM C1670/C1670M may also be referenced in submittals, procurement documents, and compliance checks where consistent product identification and specification alignment are important for masonry veneer products.

Why ASTM C1670/C1670M matters

ASTM C1670/C1670M matters because it gives the market a shared technical basis for manufactured stone masonry veneer units. That helps reduce ambiguity in purchasing and specification writing, and it can improve consistency in product evaluation and quality control. For projects that rely on adhered veneer systems, a clear ASTM reference supports more confident decision-making and lowers the risk of mismatched expectations between suppliers, specifiers, and installers. It is a practical tool for standards-based procurement and compliance review.

• Standard specification for adhered manufactured stone veneer units
• Product reference for specification and submittal review
• Supports consistent quality and compliance checks
• Useful for procurement and product comparison
• Relevant to manufactured stone masonry veneer applications