ICC-ES AC530
Full Name
ICC-ES AC530 – Acceptance Criteria for Fiber-reinforced Magnesium-oxide-based Sheets With a Factory-Bonded Water-resistive Overlay Membrane
Scope
ICC-ES AC530 outlines the acceptance criteria for evaluating fiber-reinforced magnesium oxide (MgO) based sheets with a factory-bonded water-resistive overlay membrane. These sheets are used as exterior wall claddings in construction projects.
The scope of AC530 encompasses several key aspects:
- Material properties: assessing the physical and mechanical properties of the MgO sheets, including their flexural strength, dimensional stability, and resistance to moisture, impact, and fire.
- Water-resistive membrane performance: evaluating the effectiveness of the factory-bonded membrane in preventing water penetration, including its resistance to hydrostatic pressure, wind-driven rain, and water vapor transmission.
- Durability and weatherability: assessing the long-term performance of the MgO sheets and the membrane under various environmental conditions, such as UV exposure, temperature fluctuations, and freeze-thaw cycles.
- Installation methods: reviewing the manufacturer’s recommended installation procedures to ensure proper attachment, sealing, and overall system integrity.
- Code compliance: verifying that the product and installation methods meet the requirements of relevant building codes and standards.
The evaluation process typically involves a combination of laboratory testing, engineering analysis, and review of manufacturer’s documentation to confirm compliance with the acceptance criteria.
Resources
Keywords
fiber-reinforced; magnesium oxide; MgO; sheet; water-resistive overlay membrane; exterior wall cladding; flexural strength; dimensional stability; moisture resistance; impact resistance; fire resistance; water penetration; hydrostatic pressure; wind-driven rain; water vapor transmission; durability; weatherability; installation; code compliance