The Minister for the Environment has announced further funding for the pyrite remediation scheme.
It brings the total amount of funding available to date to €20m.
The PRB will implement the remediation programme with support from the Housing Agency.
The group estimates there are approximately a thousand properties affected by pyrite, but just 418 completed applications have been received.
Minister Phil Hogan said today's announcement will ensure that the scheme is significantly funded into 2015.