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Radon in homes: all you need to know

Exposure to high levels of radon is the second most common cause of lung cancer in the UK, after smoking.

According to Public Health England (PHE), more than 1,100 people die in the UK each year as a result of exposure to radon gas.

To learn if you are at risk, you should measure radon levels in your home. Radonova supports and guides you to make sure your measurement is as accurate and effective as possible.

How to measure radon in homes

Visit our online store and choose your preferred option. Normally, test kits for long term measurement should be chosen, but in more urgent circumstances, for example a property transaction, a short-term testing option is available. When choosing your product, you will be presented with a guide to determine the number of detectors required in your test kit.

Upon receiving your test kit, place the detectors according to the instructions provided and note the details related to the test. At the end of the measurement period, return the detectors to us; your analysis report will be available within 1-2 weeks.

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How to measure radon

The importance of measuring radon wherever you live

Even in areas classified as low-risk, radon can potentially pose problems, because air contained in soil can contain high concentration levels. Depending on the building’s characteristics, large amounts of radon can still penetrate its foundations, even in low risk areas. Similarly, there can also be very large local variations, even between two adjacent houses.

It is important to acknowledge that a radon map will only provide information on risk; there is no map that will confirm the actual presence of radon. Naturally, the probability of detecting radon in indoor air is greater in high-risk areas, but the only way to know the precise level is to perform a radon test.

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To learn more about radon maps click here

I'm about to sell a home; should I measure radon?

Although not mandatory, measuring radon during a property transaction is advisable.

In the UK, regulations only oblige the seller to indicate the radon risk prescribed by a map defining the risk zones. In other words, the regulations do not require the seller to report radon levels inside the property; they only need to indicate the risk level where the property is located.

This can be misleading, because only by testing and measuring can you guarantee the actual radon level. It is strongly advised that you have the results of a reliable measurement before you exchange contracts, in order that the cost of any necessary mitigation works can be negotiated.

If time is of the essence, it is possible to measure radon quickly. By ordering our Rapidos short-term detector, it is possible to carry out an accurate radon measurement that will yield results in under a month.

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How many detectors do I need?

According to the PHE validation scheme:

  • A minimum of two detectors should be deployed at the same time, depending on the size of the property
  • One detector should be placed in the main living area; the other in the main bedroom
  • In some homes, such as studio flats, it may not be appropriate to place two detectors. In these or similar cases, a pragmatic approach should be adopted

When is the best period to measure radon?

You can conduct a radon measurement at any time of year.

The results will be seasonally adjusted according to PHE seasonal correction factors.