Abstract: A flood mitigation barrier comprising a line of central structures wrapped in a flexible heat shrinkable polymer material. The polymer material is configured such that when heat is applied to the material, shrinks to conform around the central structures.

Abstract: A flood mitigation barrier; the barrier comprising a line of central structures wrapped in a flexible heat shrinkable polymer material.

Abstract: A system for providing covers for surface areas of built structures; the system including a film of heat shrinkable material for stretching and heat shrinking over one or more of the surfaces of the built structure; the film formed as a sheet comprising an assembly of lengths of the heat shrinkable material prepared on a supporting surface; characterized in that the sheet is prepared by applying heat to overlap portions between adjoining lengths of the heat shrinkable material while the overlap portions are secured in contact between the supporting, surface and a guide rail assembly laid over the overlap portions; the overlap portions welded together by a heat gun moveable along the guide rail assembly at a predetermined distance above the overlap portions.