Radon is a naturally occurring radioactive gas found throughout the UK. While typically harmless in outdoor environments, it can pose serious health risks when it accumulates indoors—especially in areas with certain types of geology. For homeowners and property managers alike, recognising the risks and taking proactive steps can make a critical difference in long-term health and safety.
What Is Radon and Where Does It Come From?
Radon is created when uranium, which exists naturally in rocks and soil, breaks down. As a gas, it seeps upward through the ground and can enter buildings through tiny gaps or cracks in foundations, walls, and floors.
Because it is invisible, scentless, and tasteless, radon often goes unnoticed—until detected through specialist testing, and once it enters a building, it can become trapped and build up to unsafe levels over time.
Why Should You Be Concerned?
The primary health concern linked to radon exposure is lung cancer. When inhaled, radioactive particles from radon’s decay process can damage lung tissue. According to Public Health England, radon is the second leading cause of lung cancer in the UK, contributing to over 1,100 deaths each year!
High-Radon Areas in the UK
Certain regions are more vulnerable to high radon levels, particularly areas underlain by granite or igneous rock.
Find out if your area is at risk of high radon. Visit the UKHSA website
If you live in or manage homes in a region with high levels, it is strongly advised to arrange for radon testing. Even in lower-risk areas, elevated radon levels can still occur in individual properties.
Testing Is the Only Way to Know
Radon can be present without any visible signs. The only way to determine its concentration indoors is through professional radon testing. These tests typically involve placing detectors in the home for a minimum of 3 months to provide an accurate long-term reading.
Next Steps for Social Housing Providers, Homeowners, and Landlords
If your property is in or near a radon-affected area, acting early is essential to protect occupants and meet safety responsibilities. Radon may be unseen, but its dangers are very real and avoidable. By working with experienced professionals, you can make sure your properties are safer, healthier, and fully compliant with guidelines. At Mouldex, we work with individuals and housing organisations across the UK to assess, manage, and reduce radon exposure.
For further support or to arrange a professional radon test or mitigation solutions, enquire today!