The Department of Justice says no more than three people will share a room in a direct-provision centre from now on.
It says this policy will remain in place even when the Covid-19 crisis is over.
The department says 600 residents have been relocated to allow for proper social-distancing during the pandemic.
The department was responding to concerns raised by the Ombudsman.
However, Nick Henderson, the chief executive of the Irish Refugee Council, says the new policy still isn't good enough - press PLAY