NDTScan carries out RAAC surveys in Brockworth for schools, hospitals, councils, housing providers, universities and commercial owners. Reinforced autoclaved aerated concrete was used in roofs, floors and walls from the late 1950s to the mid 1990s, and a great deal of it is still in service across Gloucestershire. NDTScan is the UK's specialist in identifying it, assessing it and telling an owner plainly what to do next.
The Department for Education's list of education settings with confirmed RAAC, published in February 2024, includes one setting in Gloucestershire, among them Marling School. NDTScan cites the published lists as evidence that RAAC is in the Gloucestershire building stock, and for no other reason. Education and health estates were counted because government asked for them to be counted. The equivalent stock in Brockworth's council, housing, leisure, retail and commercial buildings has not been, and that is where most uninspected RAAC now sits.
The method NDTScan uses in Brockworth is the one it uses everywhere: identify first, then assess. Ground penetrating radar reads the plank's internal structure without cutting into it, distinguishing RAAC from the dense precast, hollowcore and timber it is often mistaken for. Every confirmed plank is then inspected for the defects that matter, cracking, deflection, short bearing, water damage, corrosion and earlier repairs, and classified in line with IStructE guidance. The Brockworth owner receives a plank-level record, not a general opinion.
The most expensive mistake in Brockworth, as everywhere else, is to act on RAAC before it has been understood. Whole buildings have been closed on the strength of a visual inspection that could not tell RAAC from hollowcore. NDTScan's position is that identification and condition assessment come first, remediation second, and the report has to be good enough to design from.
Scan before you repair. That is the standing advice for every Brockworth client, and the reason NDTScan reports what the concrete contains before anyone specifies what to do about it.
Services Available in Brockworth
- RAAC Identification Survey GPR based, plank by plank identification of reinforced autoclaved aerated concrete in roofs, floors and walls across Brockworth. Confirms what the element is made of without opening it up, and records plank widths, reinforcement and bearing details as evidence.
- RAAC Condition Assessment Plank level inspection of confirmed RAAC for cracking, deflection, bearing length, water ingress, corrosion and previous repairs, classified in line with IStructE guidance. Reported so a Gloucestershire engineer or estates team can act on it directly.
- RAAC Management and Reinspection Monitoring regimes, reinspection intervals and management plans for RAAC that is being kept in service, plus expert input where a Brockworth owner needs an independent second opinion on a survey or a remediation proposal.
RAAC in and around Brockworth
Typical Brockworth instructions: RAAC identification in schools, halls, clinics and council buildings built between 1955 and 1995; plank by plank condition assessment of confirmed RAAC roofs and floors; risk classification in line with IStructE guidance to support decisions on closure, propping or continued use; reinspection and monitoring of managed RAAC; and independent review of surveys and remediation proposals for Gloucestershire owners and their insurers. NDTScan covers Brockworth from Oxford in the same way it covers the rest of England.
NDTScan also provides RAAC surveys in Kingswood and Fishponds, Gloucester, Cheltenham, Yate, Stroud and Bradley Stoke and the rest of Gloucestershire. The rest of the region is covered from the South West RAAC surveys page, and the service itself is described on the RAAC surveys page.
About NDTScan
NDTScan is a specialist non-destructive testing company based in Oxford and led by Neil Smuts, author of The RAAC Book. It is the UK's specialist in the identification and analysis of reinforced autoclaved aerated concrete, and a Level 4 UKCSS Operator, the first in the UK to achieve that certification. RAAC surveys in Brockworth sit alongside the company's concrete scanning and structural condition survey work, and every report is written to a standard suitable for engineering acceptance, insurers and dispute work.