RAAC Surveys

Reinforced Autoclaved Aerated Concrete (RAAC) has become a significant concern for building owners and managers, particularly in schools, hospitals, and public buildings constructed between the 1950s and 1990s. Our team carries out RAAC identification surveys to help establish whether this material is present within a structure, giving building owners the information they need to assess risk and plan any necessary remedial action.

Our RAAC Survey Process

We use ferro scanning and ground penetrating radar to identify material composition and reinforcement patterns consistent with RAAC panels, supporting visual inspection findings with non-intrusive scanning data. This is combined with measured building surveys where accurate plank layouts and dimensions are needed, giving structural engineers a clear record to work from when assessing affected areas.

Why Choose Subvision for RAAC Surveys

At Subvision, we bring more than 3 decades of surveying experience to RAAC identification work, using SSIP and ISO accredited processes, and Safe Contractor, CHAS, and Constructionline approved working methods. Our NVQ qualified surveying team supports building owners, facilities managers, and structural engineers nationwide from our Essex base, delivering accurate survey data at competitive rates to inform next steps.

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RAAC SURVEY FAQ’S

RAAC (Reinforced Autoclaved Aerated Concrete) is a lightweight construction material used mainly between the 1950s and 1990s, which has since been linked to structural failure risks, making identification important for building owners.

Our team uses ferro scanning and ground penetrating radar to identify material composition and reinforcement patterns consistent with RAAC, supported by visual inspection and measured survey data where needed.

RAAC is most commonly found in flat or low-pitched roofs of buildings constructed between the 1950s and 1990s, including schools, hospitals, and other public sector buildings from that era.

Our surveys focus on identifying the presence and layout of RAAC material. Where structural assessment or engineering sign-off is required, we can work alongside your structural engineer to support their assessment with our survey data.

This depends on the size and accessibility of the building, particularly roof areas. We’ll confirm a realistic timescale before work begins.

Yes. Where accurate plank layouts and dimensions are needed alongside identification, we combine RAAC surveys with measured building surveys to give a complete picture for engineers.

Yes. We carry out RAAC identification surveys for a range of building types, including schools, hospitals, and other public sector buildings where this material is a known risk.

Have Any Questions?

If you have any questions regarding our services feel free to contact the Subvision team.