This specification covers compounds that are blends of thermoplastic and cellulosic ingredients. The thermoplastic components of the thermoplastic/cellulosic composite compounds include,but are not limited,to poly vinyl chloride (PVC) vinyl chloride copolymers,polyvinyl chloride blends,polystyrene (PS),styrene co-polymers, polypropylene (PP),Polyethylene (PE) and high density polyethylene (HDPE). The compounding ingredients of the thermoplastic shall be permitted to consist of lubricants, stabilizers, modifiers, blowing agents,colorants,pigments,process aids and/or inorganic fillers. The cellulosic fillers shall be permitted to be in the form of but not limited to distinct fibers,fiber bundles, particles,wafers, flakes, strands or veneers. These elements shall be permitted to be bonded together with naturally occurring or synthetic polymers. Additives such as wax,pigments, process aids or preservatives shall be permitted to be added to enhance performance or aesthetics, unless limited below.