Premier Daniel Andrews makes "no apology" for sending up to 40 juvenile offenders to adult prison despite a damning Ombudsman's report condemning the practice as indefensible.

Mr Andrews upped the tough talk on Tuesday, insisting that an adult prison was the "most appropriate facility" for those responsible for rioting at the Parkville Justice Centre over the weekend, despite claims it could breach Victoria's Charter of Human Rights.

"The behaviour that we have seen at Parkville is completely unacceptable. I am sick, and the Victorian community is sick of it. Those inmates will be going to adult prison and I make absolutely no apology," Mr Andrews said.

Former Victorian Ombudsman George Brouwer was scathing in a 2013 report of a decision by the Youth Parole Board to incarcerate five children in the Charlotte Management Unit at Port Phillip Prison between July and August 2012.