Radon is a radioactive gas. Radon causes about 350 cases of lung cancer in Ireland each year. Read more about the health risks of radon.
Homes in some parts of Ireland are more likely to have a radon problem. These are called High Radon Areas.
The radon risk map will tell you if your home is in a High Radon Area. High Radon Areas are shown in red.
Even if your home is not in a High Radon Area, it may still have a high level of radon.
How to find your home
How to test your home for radon
All workplaces and schools in a High Radon Area must be tested for radon. Check if your workplace is in a High Radon Area on our Radon in Workplaces map.
All new homes in a High Radon Area must have a radon membrane to meet Building Regulations. A radon membrane is a barrier that helps stop radon coming into a building. To see if your new home is in a High Radon Area, check out our radon map for use with Technical Guidance Document - C
If your premises was built before May 2022, you can check our radon map (pre-May 2022) to see if your building required a radon membrane. Learn more about radon membranes and protecting your building from radon.