ICC-ES AC389
Full Name
ICC-ES AC389 – Acceptance Criteria for Composite Siding Containing Inorganic Microspheres and Proprietary Resins, Used as an Exterior Wall Cladding
Scope
ICC-ES AC389 outlines the acceptance criteria for composite siding containing inorganic microspheres and proprietary resins, used as an exterior wall cladding.
The scope of AC389 includes:
- Materials: it specifies the requirements for the composition of the composite siding, including the type and amount of inorganic microspheres, the formulation of the proprietary resins, and any additives used to enhance performance.
- Performance: it outlines the testing methods and acceptance criteria for evaluating the performance of the siding, including resistance to weather elements, impact, fire, moisture, and thermal cycling.
- Durability: it addresses the durability of the siding, ensuring it can withstand long-term exposure to environmental conditions without significant degradation or loss of performance.
- Installation: it provides guidelines for the proper installation of the siding, including fastening methods, flashing details, and joint treatment, to ensure weathertightness and structural integrity.
- Quality control: it establishes a quality control program for manufacturers to ensure that the siding consistently meets the requirements of the acceptance criteria, including inspections and testing procedures.
The AC389 acceptance criteria are used by manufacturers to obtain an evaluation report from ICC Evaluation Service (ICC-ES), which demonstrates that their composite siding complies with the applicable building codes and standards for use as exterior wall cladding.
Resources
Keywords
siding; composite siding; inorganic microspheres; proprietary resins; exterior wall cladding; acceptance criteria; weathering resistance; impact resistance; fire resistance; moisture resistance; thermal cycling; durability; fastening; flashing; joint treatment; building code; standard; evaluation report