ICC-ES AC560
Full Name
ICC-ES AC560 – Acceptance Criteria for Wood Structural Panel Insulated Roof Sheathing (WSPIRS)
Scope
ICC-ES AC560 establishes the acceptance criteria for evaluating the structural performance of Wood Structural Panel Insulated Roof Sheathing (WSPIRS) for compliance with the International Residential Code (IRC).
Key aspects covered within the scope of AC560 include:
- Structural performance: assessment of the WSPIRS ability to resist loads (dead, live, wind, snow) acting on the roof assembly.
- Insulation properties: evaluation of the thermal resistance (R-value) of the WSPIRS.
- Fastening requirements: evaluation of the appropriate fasteners and spacing for attaching the WSPIRS to the roof framing.
- Fire resistance ratings: assessment of the fire performance of the WSPIRS in accordance with applicable building codes.
- Moisture resistance: evaluation of the ability of the WSPIRS to resist moisture intrusion and prevent damage to the roof assembly.
Resources
Keywords
wood structural panel; insulated roof sheathing; WSPIRS; thermal resistance; R-value; structural performance; fastening; fire resistance; moisture resistance