What is radon?

Radon is a radioactive gas that occurs naturally. It has no taste, smell or colour; in fact, special devices are needed to detect it. Radon is everywhere, usually at levels that pose negligible risk.

Although there is no danger from radon outside, where it is diluted by the air, it can be dangerous inside buildings. Inside, the levels of radon can build up. If the concentration levels are high, radon can pose a danger to your health.

Trials have shown however, that when the background level of radon is at the average level in the UK (20 Bq/m3), you are more likely to die from an accident in the home than from lung cancer caused by a background level of radon.

The government has identified the areas of the country where radon is at a higher level and Public Health England provides more information. The Building Research Council provide advice on reducing radon levels in your home through construction.