Outdoor building materials including polymer matrix and first and second reinforcement materials

A method of manufacturing an outdoor building material, comprising:

• providing a polymer matrix, at least a portion of which is derived from waste agricultural film;
• providing a first reinforcement material, at least a portion of which is derived from post-consumer waste in the form of clothing, carpet, curtains, fabric, or combinations thereof;
• shredding the polymeric matrix and the first reinforcement material to form a shredded mixture;
• providing a second reinforcement material comprising char, biochar, carbon black, or combinations thereof;
• combining the second reinforcement material to the shredded mixture to form a combined mixture;
• and
• heating and extruding the combined mixture to form the outdoor building material, in which the first and second reinforcement materials are dispersed in the polymer matrix.

An outdoor building material, comprising:

• a polymer matrix;
• a first reinforcement material dispersed in the polymer matrix;
• and
• a second reinforcement material dispersed in the polymer matrix,
• wherein the first reinforcement material consists of a textile material, and
• wherein the second reinforcement material consists of at least one of char, biochar, and carbon black.