Non-metallic building materials in the form of non-metallic barriers and portable non-metallic barriers including storm barriers, flood barriers, spill barriers, biohazard barriers; non-metallic building flashing in the nature of water barriers made of polyethylene; polymer based water barriers; nonmetallic enclosures and portable non-metallic enclosures, namely, barriers and enclosures and portable barriers and portable enclosures used to prevent or minimise damage arising from floods, spill...