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ANSI/APA PRS 610.1: Standard for Performance-Rated SIPs in Wall Applications

Product-Structural-Insulated-Panels-SIPs

ANSI/APA PRS 610.1-2023: Standard for Performance-Rated Structural Insulated Panels in Wall Applications

ANSI/APA PRS 610.1-2023 establishes the performance requirements, test methods, and quality assurance criteria for structural insulated panels (SIPs) used in above-grade wall applications. The standard applies to SIPs manufactured with a foam plastic insulation core — either expanded polystyrene (EPS), extruded polystyrene (XPS), or foamed-in-place polyurethane — bonded between two wood structural panel facings such as OSB or plywood. For manufacturers, it defines the qualification pathway to mark products as performance-rated; for specifiers and code officials, it provides a consistent, ANSI-accredited benchmark for evaluating SIP wall panels and lintels against minimum structural, bond strength, and durability requirements.

Download ANSI/APA PRS 610.1

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ANSI/APA PRS 610.1 Scope and Key Requirements

ANSI/APA PRS 610.1-2023 is the American National Standard for performance-rated structural insulated panels (SIPs) in wall applications. It provides manufacturers with the qualification and quality assurance requirements needed to mark their SIP products as performance-rated, and gives specifiers, engineers, and code officials a consistent basis for evaluating SIP wall panels and lintels against tested structural performance criteria.

Scope & Application

  • Applies to structural insulated panels (SIPs) consisting of a foam plastic insulation core bonded between two wood structural panel facings (OSB or plywood)

  • Covers SIPs intended for use as wall panels and lintels in above-grade wall applications

  • Addresses resistance to axial, transverse, and racking loads for wall panels, and vertical loads for lintels

  • Limited to dry service conditions where average equilibrium moisture content of sawn lumber is less than 16%

  • Requires both panel facings to be the same type and thickness, with the strength axis oriented vertically for walls and horizontally for lintels

Key Requirements

  • Core materials: Must be EPS, XPS, or foamed-in-place polyurethane meeting specified physical property, density, and fire performance requirements

  • Facing materials: Must be 7/16 Performance Category wood structural panels (OSB or plywood) meeting minimum flatwise bending, tension, and density properties

  • Adhesives: Laminating adhesives must conform to ASTM D7446; foamed-in-place core materials must meet additional durability requirements

  • Qualification: SIPs must be qualified through either Method A (prescriptive component requirements confirmed by limited full-scale tests) or Method B (empirical full-scale testing across all panel configurations)

  • Performance testing: Panels are tested for axial load capacity, transverse load capacity, racking resistance, lintel load capacity, bond strength, and construction moisture effects, with minimum test values specified for each

  • Quality assurance: Manufacturers must follow an in-plant quality manual accepted by an approved agency, with bond tension tests conducted on a production shift basis and periodic re-evaluation of bending strength and stiffness

  • Certification and marking: SIPs must bear the stamp of an approved agency and be marked with manufacturer identification, manufacturing date, conformance designation (ANSI PRS-610.1), flame spread and smoke-developed indices, and rated direction

Download ANSI/APA PRS 610.1

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