ICC-ES AC397
Full Name
ICC-ES AC397 – Acceptance Criteria for Exterior Continuous Thermal Insulation Systems (ECTIS)
Scope
ICC-ES AC397 outlines the acceptance criteria for Exterior Continuous Thermal Insulation Systems (ECTIS) used to improve the thermal performance of building envelopes. ECTIS are applied to the exterior of walls and consist of insulation materials, attachments, and finishes.
The scope of AC397 includes:
- Materials: it specifies the requirements for the insulation materials, adhesives, fasteners, and finishes used in ECTIS, ensuring their compatibility, durability, and thermal performance.
- Design and construction: it details the design and construction requirements for ECTIS, including insulation thickness, attachment methods, joint treatment, and compatibility with different wall substrates and cladding systems.
- Performance: it outlines the testing methods and acceptance criteria for evaluating the performance of ECTIS, including thermal resistance, moisture control, fire resistance, wind resistance, and impact resistance.
- Installation: it provides guidelines for the proper installation of ECTIS, ensuring adherence to manufacturer’s instructions and best practices for achieving optimal performance.
- Quality control: it establishes a quality control program for manufacturers to ensure that ECTIS consistently meet the requirements of the acceptance criteria, including inspections and testing procedures.
The AC397 acceptance criteria are used by manufacturers to obtain an evaluation report from ICC Evaluation Service (ICC-ES), which demonstrates that their ECTIS comply with the applicable building codes and standards.
Resources
Keywords
insulation; exterior continuous insulation; thermal insulation; acceptance criteria; adhesive; fastener; finish; thermal resistance; moisture control; fire resistance; wind resistance; impact resistance; installation; quality control; building code; standard; evaluation report