RAAC Plank Surveys

The Structural Engineering team at Frankham specialises in assessing the risk of failure from defective Reinforced Autoclaved Aerated Concrete (RAAC) roof planks for building owners, including Hospital Trusts, Local Councils, and government premises through their FM contractors.

We address concerns with RAAC construction, which were first highlighted after a collapse of RAAC roof planks at a school in Kent. The Standing Committee on Structural Safety (SCOSS) raised a safety alert in 2019 and, now operating under the name Collaborative Reporting for Safer Structures (CROSS), continues to raise awareness on RAAC structural safety. Building Research Establishment (BRE) Information Paper IP10/96 also highlights concerns with RAAC roof planks and advises that they should be inspected by a Structural Engineer and appropriate measures taken to remediate defects and advise on long-term inspection regimes.

At Frankham, we understand the importance of minimal disruption during investigations and our team of experts will work closely with you to ensure the safe use of your assets.

Get in touch:

Contact our Structural Engineering team for a review of your building’s safety risks in relation to RAAC.


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"We had over 110 nationwide government buildings of various age and size that needed to be urgently assessed with respect to risk from failure of RAAC roofs. The Frankham Consultancy Group Structural Engineering team were reactive to our needs, and we were able to complete the surveys safely, issuing reports in short time all to the satisfaction of our client."

Gareth Blore, Programme Director at Mitie