Radon Gas Mitigation
British Standard 8102 (2009) Code of practice for protection of below ground structures against water from the ground, states that 'A risk assessment should be carried out which considers the long term water pressures, the effects of surface water infiltration... the risk assessment should also include... radon... and other ground gases and contaminants'.
The question is therefore, why it's not a consideration made by every basement conversion contractor in the UK? The answer is that it's not considered because it's not wholly understood, yet the information is out there.
Trace have taken a proactive approach to this, being the first UK Company to licence a patented radon protection system which makes use of the drainage based waterproofing systems, widely employed in basement conversion and waterproofing projects.