ICC-ES AC558
Full Name
ICC-ES AC558 – Acceptance Criteria for Glass Fiber-Reinforced Poylmer (GFRP) Wall, Roof, and Floor Sheathing
Scope
ICC-ES AC558 defines the acceptance criteria for evaluating Glass Fiber-Reinforced Polymer (GFRP) sheathing products intended for use in walls, roofs, and floors. These products are designed to provide structural support, weather resistance, and insulation in building construction.
The scope of AC558 includes:
- Material properties: assessing the physical and mechanical properties of the GFRP sheathing, including tensile strength, flexural strength, shear strength, and moisture resistance, to ensure it meets the required structural and durability performance.
- Performance testing: conducting tests to evaluate the GFRP sheathing’s resistance to wind uplift, impact, fire, and other environmental factors, as well as its thermal and acoustical properties.
- Installation methods: evaluating the recommended installation procedures, including fastening, sealing, and joint details, to ensure proper attachment and weatherproofing of the sheathing system.
- Code compliance: verifying that the GFRP sheathing product and installation methods comply with relevant building codes and standards, such as the International Building Code (IBC) and International Residential Code (IRC).
The primary goal of AC558 is to ensure that GFRP sheathing products offer a comparable level of performance and safety to traditional wood or OSB sheathing. By meeting these criteria, manufacturers can obtain an evaluation report from ICC-ES, which can be used to demonstrate code compliance and gain approval for use in building projects.
Resources
Keywords
glass fiber-reinforced polymer; GFRP; sheathing; wall; roof; floor; structural; tensile strength; flexural strength; shear strength; moisture resistance; wind uplift resistance; impact resistance; fire resistance; thermal properties; acoustical properties; installation; fastening; sealing; joint details; code compliance