The AZEK Company Inc. engages in the design, manufacturing, and selling of building products for residential, commercial, and industrial markets in the United States and Canada. It operates through two segments: Residential and Commercial. The Residential segment designs and manufactures engineered outdoor living and home exterior products, such as decking, railing, exterior trim, and molding, siding and cladding, pergolas and cabanas, and accessories under the TimberTech, AZEK Exteriors, VERSATEX, ULTRALOX, StruXure, and INTEX brands.