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Last edited 16 Mar 2021
Radon protection for new dwellings GG 74
Radon protection for new dwellings (GG 74 revised) was written by Chris Scivyer and published by BRE on 13 January 2015.
Radon is a natural, colourless, odourless, radioactive gas formed by the radioactive decay of small amounts of uranium that occur naturally in all rocks and soils. It can move through cracks and fissures in the subsoil and eventually to the atmosphere. Most of this radon will disperse harmlessly, but some will collect in spaces under or within buildings.
For most UK residents, radon accounts for half the annual radiation they receive. Exposure to particularly high levels of radon may increase the risk of developing lung cancer. While it is recognised that the air inside every building contains radon, some buildings in certain areas of the UK might have unacceptably high concentrations unless precautions are taken. South-west England is of principal concern, but high concentrations of radon are also found in many other areas.
Building regulations covering radon-protective measures for new dwellings were first introduced for south-west England in the late 1980s, for Derbyshire and Northamptonshire in the early 1990s and for the rest of England, Scotland and Northern Ireland in the late 1990s.
It should be read in conjunction with BRE Report BR 211, Radon: guidance on protective measures for new buildings. Two companion guides cover radon protection of new domestic extensions and conservatories and radon protection of new large buildings such as workplaces.
Its contents are:
- What is radon and why consider it for new dwellings?
- Requirements for radon-protective measures.
- Avoiding problems and getting it right.
- Radon protective measurement for new dwellings.
- Further reading.
 Find out more.
 Related articles on Designing Buildings Wiki
- BRE articles on Designing Buildings Wiki.
- BRE Buzz articles on Designing Buildings Wiki.
- BRE Buzz.
- Building Research Establishment.
- Methane and other gasses from the ground.
- Radon: Guidance on protective measures for new buildings BR 211.
- Radon protection for new domestic extensions and conservatories with solid concrete ground floors (GG 73 revised).
- Radon protection for new large buildings GG 75.
- Radon solutions in older homes GR 38.
- Site appraisal.
- Site investigation.
- Soil survey.
- Solid and liquid contaminants risk assessments.
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