What are those Commodity Specifications referenced by the building codes? AWPA U1 referenced by the code specifies wood preservative treatments by application, exposure, and type of wood product. Know what the terms mean to be sure you get the intended..
Drawing Note Says: Treated wood sill plate. What type - Preservative? Fire Retardant? Both are wood treatments. Know the building code to understand when the use of wood preservative treatment is required. Avoiding the requirement for preservative..