Three schools given clean bills of health following RAAC inspections have now been told they have the crumbly concrete.
The cases have reignited concerns more primaries and secondaries will be at risk of collapse. Early inspections only required visual checks.
Stockport Council closed two schools in the past three weeks after commissioning an external expert to conduct in-depth surveys of its estate “as an additional precaution”.
The local authority hired the engineers after the Department for Education ramped up its RAAC policy towards the end of the summer, despite having already carried out inspections itself.
