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Radon
Radon is a colourless and odourless radioactive gas. It occurs naturally, being found in small quantities of soil and rocks. Although the amount varies among different areas of the country, it is particularly prevalent in granite and limestone areas.
How does radon enter a property?
The floors and walls of properties contain small gaps formed during
and after construction. These draw the radon from the ground into
the building. Outdoors, radon is quickly diluted into the atmosphere,
but radon penetrating into an enclosed space can reach relatively
high concentrations. There are five main ways to reduce the amount
of radon entering a house:
- Install a radon sump system
- Seal floors and walls
- Increase underfloor ventilation
- Install a whole house positive pressurisation or positive supply ventilation system
- Improve the ventilation of the house
These solutions are not all suitable for all types of house, nor are they suitable for all levels of radon. In some cases more than one solution will be used to reduce the radon levels. This is particularly likely where a house is large or has a cellar or basement.
Don't panic!
Radon is no different from any other minor building problem such as rising damp or timber rot. It can be dealt with routinely at the time of house purchase, and is not a reason for not buying particular property.
Further Information A guide containing further information about Radon affected areas is available free from DEFRA Warehouse Publications, admail 6000, London SW1A 2XX
T: 08459 556000
DEFRA Radioactive Substances Division, Zone 4/E7 Ashdown House, 123 Victoria Street, London SW1E www.bre.co.uk/radon
BRE Radon Hotline 01923 664707
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