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RAAC surveys in Weymouth. The UK's reference point for RAAC.

RAAC Surveys Weymouth | Identification and Assessment | NDTScan

RAAC identification, condition assessment and reporting to IStructE guidance across Weymouth, Dorset and the surrounding area. NDTScan attends from its Oxford base, anywhere in the UK.
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Cracked aerated concrete plank removed from a roof, NDTScan RAAC survey

Overview

NDTScan carries out RAAC surveys in Weymouth 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 Dorset. NDTScan is the UK's specialist in identifying it, assessing it and telling an owner plainly what to do next.

Dolphin Shopping Centre has also been publicly reported as containing RAAC. Those are the buildings that made the published lists, which cover schools, colleges and NHS sites. They are named here as evidence that the construction is present in Dorset, not as NDTScan projects. Around Weymouth the same roof and floor planks are in council buildings, housing, leisure centres, retail units and industrial sheds that nobody has counted.

NDTScan surveys RAAC in Weymouth in two stages that are usually completed on the same visit. First, identification: GPR and the plank's own signature, its width, its transverse reinforcement and its bearing detail, establish plank by plank whether the element is RAAC at all. Second, condition: each confirmed plank is inspected for cracking, deflection, bearing length, water ingress, corrosion and past repair, and the results are classified in line with IStructE guidance. The report says what was found, what was not found and how confident each reading is.

NDTScan's advice to Weymouth owners is consistent: survey before you decide. A RAAC roof that has been identified and assessed plank by plank can be managed, propped, strengthened or replaced on evidence. One that has only been glanced at will be closed, propped or replaced on fear, and that is where budgets go. The survey is the smallest cost in the chain.

Scan before you repair. That is the standing advice for every Weymouth client, and the reason NDTScan reports what the concrete contains before anyone specifies what to do about it.

Services Available in Weymouth

  • RAAC Identification Survey GPR based, plank by plank identification of reinforced autoclaved aerated concrete in roofs, floors and walls across Weymouth. 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 Dorset 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 Weymouth owner needs an independent second opinion on a survey or a remediation proposal.

RAAC in and around Weymouth

Around Weymouth the work divides into four kinds. Owners who do not know what their roof is made of and need it identified. Owners who know it is RAAC and need every plank assessed and classified in line with IStructE guidance. Estates teams who need a management plan and a reinspection regime for planks staying in service. And Dorset clients who have a survey or a remediation proposal in front of them and want NDTScan's independent view before committing money. Public bodies, housing providers, insurers and private owners all instruct on the same basis.

NDTScan also provides RAAC surveys in Bournemouth, Poole, Christchurch, Dorchester, Wimborne Minster and Verwood and the rest of Dorset. 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 Weymouth 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.

Weymouth RAAC Services

  • RAAC Identification GPR based, plank by plank identification of reinforced autoclaved aerated concrete in Weymouth roofs, floors and walls, without opening the structure.
  • Condition Assessment Cracking, deflection, bearing, water ingress, corrosion and previous repairs recorded for every confirmed plank in Weymouth buildings.
  • IStructE Classification Findings classified in line with IStructE guidance so Dorset owners and engineers can decide on closure, propping, management or replacement.
  • Schools and Colleges Identification and assessment for education estates across Dorset, planned around term dates and occupied buildings.
  • NHS, Council and Housing Estates Hospitals, clinics, council buildings, leisure centres and housing stock in and around Weymouth, with reporting that supports estate-wide decisions.
  • Nationwide from Oxford NDTScan attends Weymouth and the whole of England from its Oxford base, whenever the work demands it, with every survey interpreted and reported in full.
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02080
888 724

Technical Support?

info@ ndtscan.com

Yes. NDTScan attends Weymouth and the rest of Dorset from its Oxford base, and works across the whole of the UK. RAAC identification and condition assessment is a core service, delivered by the company's own specialists and reported in line with IStructE guidance.
With ground penetrating radar and the plank's own signature. RAAC planks return a distinctly different radar response from dense concrete, hollowcore and timber, and their widths, transverse bars and bearing details confirm the reading. NDTScan checks every plank rather than sampling one corner, so a Weymouth owner gets a complete picture without opening the roof.
It will give the owner's engineer the evidence needed to make that decision. NDTScan records the condition of every plank, classifies the findings in line with IStructE guidance and states plainly where immediate action is needed. The decision on occupation rests with the responsible engineer, and the report is written so that decision can be taken on evidence rather than on fear.
No. The published lists only ever covered education settings and NHS hospital sites. A building's absence from them means it was never counted, not that it was surveyed and found clear. NDTScan's advice for any Dorset building with a flat or shallow roof from 1955 to 1995 is to have the construction identified, which is a single visit and settles the question.
Plank by plank, not as a general opinion. Each element is identified, its condition recorded and classified in line with IStructE guidance, and every significant defect is photographed and located on a plan. The report says what was found, what was not found and how confident each reading is, so the Dorset owner can act on it directly.
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Beyond inspection, we guide your next steps, from remedial works to structural interventions or re-inspections. We’re partners, not just service providers.

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Our scanning systems are smart, secure, and fully compliant with UKAS, ISO 9712, and sector safety protocols. We bring the right tech to every job, no compromise.

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Weymouth RAAC Survey FAQs

Frequently Asked Questions.

What Weymouth owners, engineers and estates teams ask before instructing a RAAC survey, and how NDTScan answers.
Yes. NDTScan attends Weymouth and the rest of Dorset from its Oxford base, and works across the whole of the UK. RAAC identification and condition assessment is a core service, delivered by the company's own specialists and reported in line with IStructE guidance.
With ground penetrating radar and the plank's own signature. RAAC planks return a distinctly different radar response from dense concrete, hollowcore and timber, and their widths, transverse bars and bearing details confirm the reading. NDTScan checks every plank rather than sampling one corner, so a Weymouth owner gets a complete picture without opening the roof.
It will give the owner's engineer the evidence needed to make that decision. NDTScan records the condition of every plank, classifies the findings in line with IStructE guidance and states plainly where immediate action is needed. The decision on occupation rests with the responsible engineer, and the report is written so that decision can be taken on evidence rather than on fear.
No. The published lists only ever covered education settings and NHS hospital sites. A building's absence from them means it was never counted, not that it was surveyed and found clear. NDTScan's advice for any Dorset building with a flat or shallow roof from 1955 to 1995 is to have the construction identified, which is a single visit and settles the question.
Plank by plank, not as a general opinion. Each element is identified, its condition recorded and classified in line with IStructE guidance, and every significant defect is photographed and located on a plan. The report says what was found, what was not found and how confident each reading is, so the Dorset owner can act on it directly.