ICC-ES AC71
Full Name
ICC-ES AC71 – Acceptance Criteria for Foam Plastic Sheathing Panels Used as Weather-resistive Barriers
Scope
ICC-ES AC71 establishes the requirements for evaluating foam plastic sheathing panels intended to function as weather-resistive barriers in building construction.
The scope of AC71 includes the following:
- Types of foam plastic sheathing: it covers various types of foam plastic sheathing materials, such as expanded polystyrene (EPS), extruded polystyrene (XPS), polyisocyanurate (polyiso), and other similar materials.
- Performance requirements: it outlines the performance requirements for foam plastic sheathing as weather-resistive barriers, including water resistance, air leakage resistance, durability, and compatibility with other building materials.
- Test methods: it specifies the test methods for evaluating the sheathing properties under various conditions, such as water exposure, wind-driven rain, and long-term weathering.
- Evaluation criteria: it provides the criteria for evaluating the test results and determining the suitability of the foam plastic sheathing as a weather-resistive barrier in building construction.
Overall, ICC-ES AC71 serves as a comprehensive guideline for evaluating the performance and suitability of foam plastic sheathing panels used as weather-resistive barriers, ensuring their effectiveness in protecting buildings from moisture intrusion and other weather-related damage.
Resources
Keywords
foam plastic sheathing; weather-resistive barrier; water resistance; air leakage resistance; durability; compatibility; expanded polystyrene (EPS); extruded polystyrene (XPS); polyisocyanurate (polyiso); building construction; testing; evaluation; performance