What is RAAC (Reinforced Autoclaved Aerated Concrete)
RAAC is a lightweight form of concrete used in roof, floor, wall and panel construction in buildings built predominantly between the mid-1950s and late 1980s. While structurally effective at the time, modern inspection and research indicate deterioration and a risk of sudden failure, particularly when exposed to moisture or subjected to inadequate maintenance.
Managing the presence of RAAC, particularly in commercial roofing, is now a key priority for duty holders and building owners across the UK. We deliver reinforced autoclaved aerated concrete solutions that identify, assess and remediate RAAC safely and in line with current structural engineering guidance.
Technical RAAC Surveys and Condition Assessment
Our in-house RAAC specialists conduct detailed site surveys using advanced technology to identify the presence, condition, and location of RAAC elements. Our structural assessments inform remedial strategies and cost planning. Additionally, we provide clear reports that support duty holder compliance with relevant safety regulations. Our reports provide duty holders with clear evidence to support compliance and to plan RAAC surveys and remediation as part of their wider building safety obligations. Reports help the development of building condition reports and building structural assessments required for compliant remediation planning.
RAAC Risk Assessment and Planning
Our RAAC risk assessment services ensure priority actions are identified and aligned with building occupancy requirements, structural conditions and operational. Bespoke RAAC risk assessments are conducted to guide priority actions. Remediation planning is tailored to the specific building type, occupancy, and sector. Additionally, option analysis considers strengthening measures or full replacement.
Structural Strengthening and Replacement Works
We deliver compliant structural strengthening, repair, and replacement of RAAC elements with safety and continuity. Our extensive RAAC experience means we understand and plan around the operational challenges RAAC poses in commercial, educational, and industrial buildings. Integrated building and access design, technical scaffolding, and secure system-of-work planning mitigate risk throughout our project delivery, while our comprehensive project management minimises disruption, ensures safety, and delivers high-quality outcomes.
Seamless Compliance and Risk Management
We align our approach with current guidance to support building duty holders in understanding and managing their responsibilities. Through transparent reporting and digital project information, we provide stakeholders with clarity and confidence, while our RAAC management processes ensure compliance with the Building Safety Act where applicable.
RAAC Risk Categories and Required Actions.
Duty holders must understand RAAC risk levels to prioritise remedial work. Our RAAC risk assessment services classify findings as:
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High Risk
Advanced deterioration, deflection, cracking or water ingress. Immediate temporary supports or access restrictions may be required, followed by urgent RAAC strengthening works or replacement. -
Medium Risk
Panels require monitoring or planned strengthening. Works can often be programmed with minimal disruption. -
Low Risk
Panels remain structurally stable but require routine inspection, planned maintenance or long-term monitoring.
These categories are aligned with current structural engineering guidance and inform your RAAC assessment and remediation record.
Building Safety Act Compliance and Duty Holder Support
RAAC remediation is a vital responsibility for building owners and managers under the Building Safety Act. Our services provide comprehensive evidence and thoroughly documented processes that contribute to Safety Case information and safety management systems. We deliver the technical details necessary for building assessment certificate applications and provide transparent digital reporting that meets Golden Thread standards. Through precise documentation, effective communication, and a structured governance framework, we assist duty holders in understanding their obligations and demonstrating full compliance with relevant building safety legislation. Our transparent evidence-based reporting is required for any future building assessment certificate and supports accountable persons in fulfilling their statutory duties.