ICC-ES AC227
Full Name
ICC-ES AC227 – Acceptance Criteria for Rigid Cellular PVC Nonload-bearing Exterior Trim
Scope
ICC-ES AC227 establishes the acceptance criteria for evaluating rigid cellular PVC nonload-bearing exterior trim used in building construction. This trim is commonly used as corner boards, soffits, fascia, and other decorative or protective elements on the exterior of buildings.
Key aspects covered by AC227 include:
- Material properties: defining the requirements for the physical and chemical properties of rigid cellular PVC, including density, tensile strength, flexural strength, impact resistance, and weathering resistance.
- Dimensional stability: assessing the trim’s ability to maintain its dimensions under various temperature and humidity conditions, ensuring it won’t warp, shrink, or expand excessively.
- Fire performance: evaluating the trim’s fire resistance properties, including flame spread and smoke development, to meet building code requirements.
- Installation: providing guidelines for proper installation of the trim to ensure it is securely fastened and performs as intended.
By adhering to AC227, manufacturers can demonstrate that their rigid cellular PVC trim meets the necessary performance and safety standards, giving building officials, designers, and contractors confidence in its use for exterior applications.
Resources
Keywords
rigid cellular PVC; exterior trim; acceptance criteria; density; tensile strength; flexural strength; impact resistance; weathering resistance; dimensional stability; fire performance; flame spread; smoke development; installation