Radon is a naturally occurring radioactive gas. It is invisible, odourless and tasteless, and can only be detected using special equipment.

The RPII has conducted a National Radon Survey (NRS) to find out which regions are most at risk from radon. These parts of the country are called High Radon Areas. Although this type of survey is useful as a general guide, the only way to find out if a specific house has a high level of radon is to test it.

Radon is a carcinogen, in the same group as tobacco smoke and asbestos.
Long-term exposure to high levels of radon can irradiate lung tissue and increase the risk of lung cancer.

A radon measurement is carried out entirely by post.  First, the householder is sent two radon detectors. To measure the radon levels, you simply place one of the detectors in an occupied bedroom, and the second detector in the main living area. We recommend that you leave the detectors in place for a minimum period of three months. This is because radon levels fluctuate with time. A reliable measurement will only be obtained over a three month or greater period.

Our test report will include the measurement period, the quantity of radon gas measured at both detectors’ locations, and the seasonally corrected annual average radon concentration for the whole house. It will also include our recommendations if any further action is required.

Yes, but this will not provide a reliable measurement of the average radon level. Radon levels vary according to climatic and other environmental factors. To obtain a reliable measurement, it is necessary to measure radon over a period of at least three months.

A High Radon Area is an area in which the RPII has predicted that 10 per cent or more of the buildings are likely to have radon levels above the acceptable level.

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