ICC-ES AC29

Full Name

ICC-ES AC29 – Acceptance Criteria for Cold, Liquid-applied, Below-grade, Exterior Dampproofing and Waterproofing Materials

Scope

ICC-ES AC29 outlines the requirements and test procedures for evaluating liquid-applied materials used for dampproofing and waterproofing below-grade exterior surfaces. The scope of AC29 includes:
  • Material properties: evaluating the physical and chemical properties of the liquid-applied materials, such as viscosity, solids content, and resistance to water absorption.
  • Performance testing: conducting standardized tests to assess the materials’ resistance to water penetration, hydrostatic pressure, and crack bridging.
  • Durability testing: evaluating the materials’ resistance to aging, weathering, and chemical attack.
  • Quality control: establishing quality control measures for manufacturers to ensure consistent product quality and performance.
  • Application requirements: providing guidelines for the proper preparation of surfaces and application of the materials to ensure effective dampproofing or waterproofing.
The types of materials covered under AC29 include:
  • Asphalt-based: typically used for dampproofing, providing a barrier against moisture.
  • Polymer-modified asphalt: offering enhanced performance and flexibility compared to traditional asphalt.
  • Polyurethane: providing excellent waterproofing properties and resistance to chemicals and abrasion.
  • Cementitious: typically used for waterproofing, forming a strong and durable barrier against water.
By defining the requirements and test procedures for these materials, ICC-ES AC29 ensures that below-grade exterior surfaces are adequately protected from moisture intrusion, which can lead to structural damage, mold growth, and other issues. This is crucial for maintaining the integrity and longevity of buildings and other structures.

Resources

Keywords

below-grade dampproofing; below-grade waterproofing; liquid-applied coatings; performance testing; durability testing; material properties; asphalt-based materials; polymer-modified asphalt materials; polyurethane materials; cementitious materials; water penetration resistance; hydrostatic pressure resistance; crack bridging; quality control; application requirements