Positive pressurisation: a BRE guide to radon remedial measures in existing dwellings.

This report is one of a series giving practical advice on methods of reducing radon levels in existing dwellings. It is intended to help surveyors, builders and householders who are trying to reduce indoor radon levels by positive pressurisation. The report is based on a large body of remedial work carried out to advice from the Building Research Establishment (BRE), and on discussions with others working in the field. The measures it describes are applicable, in principle, to all dwellings and similar buildings. However, the success of positive pressurisation measures in reducing radon levels is significantly influenced by the characteristics of the dwelling and the occupants' lifestyle.