The fund is for removal and replacement of unsafe non-ACM cladding systems on high-rise residential buildings.
The money is on top of the current £600m pot for the replacement of ACM cladding systems.
The latest fund is predominately targeted at supporting leaseholders in the private sector facing significant replacement bills.
The government also published amendments to building safety regulations making sprinkler systems mandatory in all new high-rise blocks over 11 metres tall.
Housing Secretary Robert Jenrick said: “I will not accept any excuses from building owners who have yet to take action and those responsible should register for the fund so that they can start the remediation process immediately.
“I have also reached an agreement with local leaders so that this important work can continue safely during the pandemic.
“New statutory guidance published today also means that all new residential buildings over 11 metres tall will be fitted with sprinkler systems.
“This is another critical part of our commitment to delivering the biggest changes to building safety for a generation.”