Roach was an Australia Schoolboys representative in 2011 and was also a member of the Australia Under 20 side for both the 2012 and 2013 IRB Junior World Championships.
Roach was an Australia Schoolboys representative in 2009 and 2010 and is currently the equal most capped schools rugby player in Australia. He was also a member of the Australia Under 20 side for both the 2011 and 2012 IRB Junior World Championships.