NON-METALLIC BUILDING MATERIALS; NON-METALLIC BARRIERS AND PORTABLE NON-METALLIC BARRIERS INCLUDING STORM BARRIERS, FLOOD BARRIERS, SPILL BARRIERS, BIOHAZARD BARRIERS; WATER BARRIERS MADE OF POLYETHYLENE; POLYMER BASED WATER BARRIERS; NON-METALLIC 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, SPILLS, BIOHAZARDS AND OTHER HAZARDS; NON-METALLIC FLOOD PREVENTION DEVICES, NAMELY, NON-METALLIC FLOOD PREVENTION SCREENS; NON-METALLIC BARRIERS AND ACCESSORIES FOR THE PREVENTION OF THE INGRESS OF WATER INTO BUILDINGS OR PARTS OF BUILDINGS; NON-METALLIC APPARATUS AND EQUIPMENT FOR REVERSIBLY SEALING APERTURES IN BUILDINGS OR PARTS OF BUILDINGS; SACKS AND BAGS CONTAINING POLYMER-BASED FILLERS, SAND OR PULP INCLUDING SACKS OR BAGS CONTAINING POLYMER BASED FILLERS, SAND OR PULP FOR USE AGAINST FLOODING, WATER SPILLAGES, CHEMICAL SPILLAGES, OIL SPILLAGES; PARTS AND ACCESSORIES FOR ALL OF THE FOREGOING