Sealing cracks in solid floors: 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 for the guidance of householders and builders who seek to reduce radon levels in dwellings by sealing cracks and other discontinuities in solid ground floors. The remedial measures described are mainly for concrete floors laid directly on the ground but some of the principles could be used with suspended concrete floors and, to a lesser extent, with floors consisting of large stone slabs. The sealing measures described are not suitable for use on suspended timber floors; it is intended to produce another BRE guide on how to deal with these.