Overview
- The National Trust said radon at staff accommodation in Chastleton’s Stableyard is now within safe, normal limits following completed works.
- Post-remediation testing has been carried out and the Trust says it will continue periodic checks to ensure levels remain low.
- An inspection previously found Ostlers Cottage exceeded the World Health Organization’s recommended maximum for indoor radon.
- Planned measures included a radon barrier beneath the suspended living-room floor and an external tile vent to extract gas.
- The Trust applied to West Oxfordshire District Council for permission to undertake the mitigation at the site, which featured in the BBC’s Wolf Hall.