#$%^&*AU2017100454A420170525.pdf#####ABSTRACT A tarpaulin 1 is disclosed for covering a roof 6 or other structure. The tarpaulin includes one or more bladders 3 disposed at or adjacent a periphery for releasable retention of a ballast liquid to provide weighted anchorage for the tarpaulin on the structure 6. -6-2 AA 2 4. 5 3 3 4,5