- News Article
- Radon
- PIV
What to do If You Live in a High Radon Area
Written By Ruth MacEachern04 June 2024

The diverse geography of the UK includes several areas where volcanic rocks below the surface of the soil release a colourless, odourless radioactive gas called radon into the atmosphere. Areas with high levels of radon include:
Western Northern Ireland
Devon & Cornwall
Northern Scotland
Wales
The Pennines
In these parts of the country, the risk of radon is much higher, and residents should take steps to protect themselves against the byproducts that radon can produce.
What are the effects of radon
Radon gas is radioactive and seeps up from the ground. When trapped in a closed environment such as a home, the unstable atoms of the gas decay into other elements and release radiation. The radioactive particles released by Radon gas are ionising – that means that they make other particles into unstable ions which in turn can release more radiation into the environment. Dust particles in your home can become radioactive when they come into contact with emissions from radon and are known as “radon daughters.” Inhalation of radioactive chemicals can increase your risk of developing some types of lung cancer and as such, the government recommends taking steps to reduce exposure.
Where is radon a problem
Radon gas seeps up from the ground and builds up in cellars and on the ground floor of homes in affected areas. At low concentrations, it is not a major risk to health, but if it exceeds safe levels, radon becomes highly dangerous.
Homes in high radon areas should ensure that they have a detector in their home that measures the levels of radon continuously and alerts them if unsafe concentrations are reached.
Reducing radon levels in your home
The key to reducing radon levels to keep your home and family safe is to ensure that your home is well ventilated. By circulating air into your home, the concentration of radon is reduced, however if the air is brought in at floor level, you might simply be adding to the problem.
As radon is a very heavy gas relative to the atmosphere, it remains close to the ground. Drawing air into your home at roof level means that the incoming air has a much lower concentration of radon making it safer.
Households in high radon areas are recommended to choose a positive input ventilation system to reduce their risk.
PIV systems work by drawing air from outside the home to displace the stale air. A central unit is usually mounted in the loft – and air is filtered as it is pulled in from outside. This filtering removes particles of dust, pollen, and other types of pollution to make the air fresh and clean. Because the air intakes are at roof level, the radon concentrations are extremely low.
This incoming air is distributed gently throughout your property and escapes through the natural ventilation of windows and air bricks taking the radon gas and ionised particles with it to make your air safer to breathe.
Good air flow throughout the home means that radon does not get the chance to build up to dangerous levels, and the efficiency of PIV systems means that they can run 24 hours a day to keep you and your family safe.
Find out more
If you live in an area with high levels of radon gas, it is important to protect the health of your family. Contact us today to book your free home survey. Our local ventilation specialists can visit your home to provide you with advice about the best solution for your property. Simply enter your postcode in the form below to find a ventilation expert near you.
Meet The Author

Ruth MacEachern
Product Manager & Policy Advisor
With over 10 years’ experience in the building industry, spanning sales, planning, site supervision and product management, Ruth combines strong technical expertise with practical insight.
Holding a degree in Building Control, graduating top of her class and receiving an award for her dissertation, Ruth has worked closely with Building Control Officers on complex, high-risk and post-Grenfell projects, supporting the interpretation of regulations and delivery of compliant outcomes.
In her current R&D role, she helps shape product development, technical guidance and industry education through writing, articles and webinars. Known for her deep regulatory knowledge, Ruth is passionate about raising standards and ensuring ventilation is properly understood, accurately specified and given the priority it deserves.
