19 Building materials (non-metallic) - Non-metallic siding panels; Non-metallic roofing materials; Non-metallic flooring solutions; Non-metallic interior and exterior tiles; Non-metallic decking boards and tiles; Non-metallic moldings; Chemically treated polymer-based materials; Non-luminous, non-mechanical, and non-metal covers for fences, barriers, and facades; Nonmetallic construction materials, drain bases and grates; Brick siding components, brick and mortar; Asphalt-based coatings and sealants for use on roofs, walls, and pavements; Non-metal ceiling tiles; Non-metal coverings for wooden decks; Roofing cement; Roofing membranes; Non-metal window jambs; Window sash replacement systems comprised of non-metal window sashes and jamb liners; Non-metal tiles and boards used as flooring; Non-metal railings and facade panels; Decorative foam core architectural elements coated to resemble stone; Synthetic, non-metal surfaces for playgrounds, sports terrains, and play areas; Non-metal weight-supporting corbels; Non-metal expansion joints for floors and walls; Waterproofing membranes for roofing, floors, and walls; Erosion control fabric, mats, and sheeting, not of metal (geotextiles).