ICC-ES AC235
Full Name
ICC-ES AC235 – Acceptance Criteria for EIFS Clad Drainage Wall Assemblies
Scope
ICC-ES AC235 outlines the acceptance criteria for evaluating Exterior Insulation and Finish Systems (EIFS) clad drainage wall assemblies. These assemblies are designed to provide a weather-resistant exterior cladding while incorporating a drainage plane to manage moisture behind the EIFS.
The scope of AC235 covers several key aspects:
- System components: it specifies the acceptable materials and components for EIFS clad drainage wall assemblies, including insulation board, drainage mat, water-resistive barrier, base coat, mesh, and finish coat.
- Performance requirements: it defines the minimum performance requirements for the assembly, such as water resistance, air leakage resistance, structural integrity, and durability under various environmental conditions.
- Testing procedures: it outlines standardized test methods to evaluate the performance of the assembly, including water penetration tests, air leakage tests, and structural load tests.
- Installation guidelines: it provides instructions for the proper installation of the EIFS clad drainage wall assembly, including surface preparation, attachment methods, and detailing of joints and transitions.
By adhering to AC235, manufacturers can demonstrate that their EIFS clad drainage wall assemblies meet the necessary performance and safety standards. This gives building officials, designers, and contractors confidence in their use for providing a durable, weather-resistant, and energy-efficient exterior wall solution.
Resources
Keywords
EIFS clad drainage wall assemblies; acceptance criteria; drainage mat; water-resistive barrier; base coat; mesh; finish coat; water resistance; air leakage resistance; structural integrity