The Health Protection Agency recommendation for existing homes is that people living in areas where 1% or more of homes are above the current Action Level of 200 Bq m3 should measure the radon concentration in their home. If the concentration is found to be above the Action Level, householders are advised to install remedial measures. The government policy in England consists of targeting areas of the country where 5% or more of homes are above the Action Level, offering free radon measurements, and then encouraging householders to remediate at their own expense if the measurement is above the current Action Level of 200 Bq m3.
We supply passive monitors approved by the HPA. These simple devices are reliable, easy to use and can be sent by post. Individual results for each home are entirely confidential.
It takes at least three months to get an accurate measurement of the level of radon in a home. This is because it is necessary to average out variations caused by weather and ventilation. For this reason we offer a 90 day monitor as standard.
A 10 day version is available should you need to quickly check for radon, for example if you decide to sell your house or if you are planning an extension.
Interpretation of the results
As a guide the HPA suggests the following
Result of screening measurement
Conclusion, in relation to the Action Level (AL)
Less than 100 Bq 3
Unlikely the AL is exceeded.
Between 100 Bq m3 and 400 Bq m3
Uncertain, need longer test.
More than 400 Bq m3
Likely the AL is exceeded.
Positive pressure system cuts radon levels by 89%
High radon levels in a two bedroom house in Cornwall have been reduced to safe levels by installing a positive pressure system costing less than £600.00.
