Green Island is a popular national park which offers visitors the opportunity to experience a small tropical island on the Great Barrier Reef close to Cairns.
A timber boardwalk in the tropical forest of the island had deteriorated, creating ongoing maintenance problems and presenting a potential safety risks to visitors.
Alan Clackson from the Department of Environment Resource Management - Marine Parks, said they decided to replace the boardwalk with Enduroplank™ recycled-plastic decking as it is durable, requires minimal maintenance and the product is aesthetically pleasing to look at.
A 300 metre floating deck was created by attaching Enduroplank™ to rectangular profiles which sit directly on the sand. As no sub-structure is required a floating deck is easy and cheap to install. The boardwalk was completed with 100 metres of deck raised on a composite fibre sub-structure.
A major benefit of this method is that the path will not be damaged by the tree roots as they grow underneath. As the path is continuously joined, if the tree roots try to lift the path, the whole path will lift, avoiding any possibility
of a trip hazard developing.
Alan said the department felt that in this sensitive environment it was, ‘their responsibility to the public to lead the way and use recycled products,’ adding that the use of, ‘recycled plastics reduced the demand on limited timber resources’.