The Danger of RAAC in schools and critical infrastructure

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May 16, 2023

The Risks and Remedies


RAAC, School Infrastructure, RAAC Dangers, RAAC Solutions, Reinforced Autoclaved Aerated Concrete, Building Material, Structural Failures, RAAC in Schools.

Dangers of RAAC in School Infrastructures

The convenience and cost-effectiveness of RAAC made it a popular choice for building schools, hospitals, and other infrastructures. However, its downsides have proven to be catastrophic. It is less durable compared to traditional concrete and is susceptible to water damage, corrosion, and long-term degradation, which could result in cracking and spalling.

Several incidents have highlighted these risks. For instance, a school roof in Cornwall, England collapsed in 2019 due to RAAC failure. Similarly, a hospital in Northern Ireland was evacuated in 2020 when RAAC beams showed signs of impending collapse. The risk to life and limb in the case of a school collapse is terrifying to contemplate and adds urgency to the need for solutions. Additionally, the financial implications of repairs and replacements can be staggering.

Possible Solutions

Removal of RAAC

One drastic solution is the complete removal of RAAC from all existing school buildings. While this would certainly eliminate the risk, it would also be a massive financial and logistical burden.

Regular Monitoring and Maintenance

A more pragmatic approach would be regular inspection and monitoring of RAAC-containing structures. Specialized tests can assess the integrity of the material and decide whether repairs or replacements are needed. This method is not only cost-effective but also ensures ongoing safety.

Development of New RAAC Formulations

Research is currently underway to develop new, safer forms of RAAC that are more durable and water-resistant. Early results are promising but are yet to reach commercial availability.


The presence of RAAC in school infrastructure presents a real and serious danger. While complete removal is the safest course of action, it is also the most impractical due to financial constraints. Regular monitoring seems to be the most balanced approach, at least until new and improved RAAC materials become available. Stakeholders, including school administrations and government bodies, must collaborate to ensure the safety of our children and the integrity of our buildings.

Recent News Articles for Further Reading


This blog is for informational purposes only and does not serve as professional advice. Always consult with qualified engineers and professionals for accurate guidance.

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