ICC-ES AC203
Full Name
ICC-ES AC203 – Acceptance Criteria for Zinc Borate (ZB) Preservative Treatment of Structural Composite Wood Products by Non-pressure Processes
Scope
ICC-ES AC203 outlines the acceptance criteria for evaluating zinc borate (ZB) preservative treatment of structural composite wood products using non-pressure processes. The main objective is to ensure the effectiveness and durability of the treatment in protecting the wood from decay and insect attack.
Key aspects covered in the scope of AC203 include:
- Treatment process: specifying the acceptable non-pressure treatment methods for applying zinc borate to structural composite wood products, such as immersion, dipping, and spraying.
- Zinc borate retention levels: defining the minimum required retention levels of zinc borate in the treated wood to ensure adequate protection against decay and insects.
- Performance testing: outlining standardized testing procedures to evaluate the effectiveness of the zinc borate treatment in preventing fungal decay and insect attack under various exposure conditions.
- Quality control: establishing requirements for quality control measures during the treatment process to ensure consistent and effective application of zinc borate.
By adhering to AC203, manufacturers can demonstrate that their zinc borate-treated structural composite wood products meet the necessary performance and durability standards, providing confidence to building officials, designers, and contractors regarding their suitability for use in construction.
Resources
Keywords
zinc borate; preservative treatment; structural composite wood products; non-pressure processes; retention levels; performance testing; fungal decay; insect attack; quality control; treatment process