The use of Asbestos was generally in decline in the 90’s. However, some asbestos materials are still in widespread use, in particular in corrugated fibre-cement roof sheeting commonly seen roofing older industrial units and sheds etc. Asbestos materials are also in use elsewhere and may have been added to buildings after the 90’s, so, the 1999 cut off point is not a guarantee that asbestos materials are not present. ASL have surveyed buildings constructed after 1999 and have found asbestos materials!! The Duty Holder is required by Law to be able to demonstrate that asbestos is or isn’t present in a building.