The global drive towards reusing and recycling continues to inspire efforts towards making the most of existing resources. One effective option currently reclaims asphalt from construction and demolition projects for use in new road construction. Main Roads would like to increase the permissible amount of reclaimed asphalt pavement (RAP) in current specifications. WARRIP has been tasked with investigating the greater utilisation of this resource. With better understanding of WA materials on hand, improved specifications and technical documents there are potential cost savings and environmental benefits to be realised.