Schemes for houses affected by pyrite or mica


Mica and pyrite are minerals found in the ground and in rocks that are excavated from quarries and used in building blocks. These minerals cause defects in building blocks, which lead to cracks and other problems in buildings and homes constructed with the defective blocks.

Mica was mainly found in quarries in the North West of Ireland and some properties in this area are affected by it. Pyrite caused similar problems in buildings in the East of Ireland.

There are schemes in place to repair or rebuild homes that have been affected by mica or pyrite.

Mica redress scheme

The Defective Concrete Blocks Grant Scheme provides financial support to homeowners whose properties have been damaged due to the use of concrete blocks that contain excessive amounts of mica or pyrite.

The scheme is currently available in Donegal and Mayo. However, it may be extended to other counties in future if needed.

This grant was updated on 30 November 2021 and now includes:

  • A maximum grant for 100% of the work (previously this was 90%)
  • A cap on the demolition and rebuild option of €420,000 (previously this was from €247,500)
  • A different way of calculating the grant based on cost per square foot of rebuilding the home

The Department of Housing, Local Government and Heritage has published detailed FAQs on the revised scheme. These give further information on how to qualify, the process involved and how to apply.

Pyrite remediation scheme

The Pyrite Remediation Scheme remediates properties significantly damaged by pyrite. The Scheme is managed by the Pyrite Resolution Board who manage the application and appeals process.

If your home has been affected by pyrite, this scheme will cover 100 per cent of the costs involved in repairing your property.

The Housing Agency has published detailed information and FAQs about the scheme where you can find information about properties that qualify for the scheme and how to apply.

Page edited: 3 December 2021