Engineered Wood Siding and Engineered Wood Trim (EWST) are offered in a wide range of textures, widths, and profiles to create endless styles and themes for interior and exterior applications. These products are manufactured primarily from inter-felted lignocellulosic fibers consolidated under heat and pressure. While designed and manufactured to appear as wood, these advanced composites can be engineered with enhanced moisture-resistant properties and dimensional stability, along with fungal decay and termite protection.

EWST is a category of composite panels designed and manufactured to perform in interior and exterior exposure applications and, as noted, with the appearance of traditional wood. Today’s engineered wood siding and trim products are highly versatile, coming in many forms, including sophisticated woodgrains and embossed surfaces. The engineered properties translate into long-lasting durability allowing for decades of service life. Additionally, engineered wood siding and trim products may be eligible for LEED credits.

Inspiration: Engineered wood siding and engineered wood trim are available in a wide range of textures, widths, and profiles that can create endless styles and themes. Common uses for these products include siding and interior and exterior trim.

MORE INFO   Design Portfolio Read the complete Design Portfolio: The definitive guide to sourcing decorative surfaces and composite panels.   Composite Panel Association  More information, plus industry news, testing & certification, policy and stewardship at the Composite Panel Association's website CompositePanel.org

Product Standards
The ANSI A135.6 for Engineered Wood Siding defines quality and dimensional attributes for siding products. The standard covers the requirements and methods of testing for exterior durability, dimensions, straightness, squareness, physical properties, and surface characteristics. It also includes trade terms and methods of identifying engineered wood siding. ANSI A135.7 Engineered Wood Trim covers the requirements and methods of testing for exterior durability, and physical and mechanical properties for trim products.

Third-party certification to the ANSI A135.6 or ANSI A135.7 is required for many applications of siding and trim products. Many building code jurisdictions require the physical properties of engineered wood siding and trim to be third-party certified. Building code officials recognize and approve the Composite Panel Association’s (CPA’s) Engineered Wood Siding and Trim Grademark Certification Program to evaluate siding and trim products for code compliance. These consensus-based standards are sponsored by CPA. Copies of ANSI A135.6 and A135.7 are available at CompositePanel.org.