DATA SHEET LOPEZIPIGUEIRAS Name and family International Name Scientific Name Family Main Commercial Names AMERICAN BLACK WALNUT Junglans nigra L. Juglandaceae. American Black Walnut Description of the wood Sapwood Heartwood • Colour • Grain direction • Grain Yellowish white to light brown. Reddish brown to dark brown. Straight, although it is occasionally wavy. Medium. Technological characteristics Density at 12% humidity Dimensional stability • Volumetric coefficient • Contraction ratio • Hardness (Chalais - Meudon) • Resistance to static bending • Elasticity modulus • Resistance to parallel compression • Fire reaction class • Thermal conductivity • Formaldehyde emission LOPEZ PIGUEIRAS SOLID WOOD FLOORING Lg. de Patarroa s/n, CP 27861, Covas-Viveiro (LUGO), Tel. +34 982 561 061 [email protected] www.lopezpigueiras.com

DATA SHEET AMERICAN BLACK WALNUT 5 Uses and applications Fine indoor furniture. Carving, lathing and curved furniture. Woodwork on openings and claddings, indoor: Doors, wood flooring, wainscots, mouldings, stairs. Decorative plates. Natural durability Fungi Termites Durable - Moderately durable Durable - Moderately durable Biological durability Durable - Moderately durable Transformation and installation Sawing Slow; risk of collapse and cementing. Impregnable sapwood and low impregnability or non-impregnable heartwood. Our applications INDOOR COATED WOOD FLOORING • Format FOR GLUING or NAILING...

DATA SHEET AMERICAN BLACK WALNUT INDOOR WOOD FLOORING MANUFACTURING STANDARDS - AITIM quality seal: 4-3-13. Wood floors. Wood flooring. - UNE-EN ISO 9001:2015: Quality Management Systems. - UNE-EN 13756:2003: Wood flooring. Terminology. - UNE-EN 13226:2009: Solid parquet elements with grooves and / or tabs. - UNE-EN 1910:2000: Determining the dimensional stability. - UNE-EN 13647:2003: Determining the geometrical characteristics. - UNE 56810:2010: Wood flooring. Installation. Specifications. - UNE-EN 14342:2006: Wood flooring. Characteristics, evaluation of conformity and marking. INDOOR WOOD...