RWi have been building retaining walls for over 35 years. Our experience and expertise has made us the industry leader. RWi are more than capable of tackling multiple large scale projects with our team consisting of five highly experienced crews and eight Drill rigs able to produce large volume works through the toughest conditions. Adelaide’s leading builders and civil contractors choose RWi as their go to Retention Contractor because of our wealth of knowledge, capability and above all our ability to produce quality walls at competitive prices.