ANSI Standard-ANSI A135.6-2012 Engineered Wood Siding 2012 (Newer version available)
ANSI A135.6, previously titled hardboard siding, covers requirements and methods of testing for the dimensions, straightness, squareness, physical properties, and surface characteristics of engineered wood siding. In 2010, the industry changed the product name from hardboard siding to Engineered Wood Siding to more accurately describe the product. Definitions of trade terms used and methods of identifying products that comply with ANSI A135.6 are included.
Key topics covered by the ANSI A135.6 (R2020) Engineered Wood Siding:
dimensional, physical and mechanical properties
inspection and test procedures.
NOTE: This standard was revised in 2020.