The structural steel bracing is integrated with the upturned hull-like roof, which is clad with LYSAGHT CUSTOM ORB® profile made from COLORBOND® Ultra Steel in the colour Dune®.The roof forms a protective shell that acts as a fire-deterrent skin, and the absence of gutters – leaf litter simply slides off the COLORBOND® steel and onto gutters in the ground – meant that Heenan could position the hall within a thick clump of trees.