For Property Owners & Occupiers
Independent surveys to assess the condition, suitability and performance of cavity wall insulation installations, as well as the external property condition.
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Professional extraction of failed, wet, contaminated or unsuitable cavity wall insulation through our accredited member firms.
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Independent verification and certification that cavities have been properly cleared of insulation and rubble following extraction works.
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Independent oversight and quality assurance throughout remediation and extraction projects from OSCAR Onsite member firms.
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Locate vetted and accredited OSCAR Onsite member firms throughout the UK.
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Not sure what to do, where to go or who to ask? We will try to help.
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Industry-leading training and accreditation programmes for installers and specialist contractors.
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OSCAR-developed qualifications in Cavity Wall Insulation Surveying, Inspection, Extraction and Clearance.
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Independent on-site assessments to demonstrate competence and compliance.
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Business, installer and homeowner membership programmes with ongoing support and compliance guidance.
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Developed by OSCAR Onsite, drawing upon over a decade of cavity wall insulation failure investigations across the UK, this CPD Accredited course bridges the gap between energy efficiency objectives and real-world building pathology.
The course aims to help delegates identify CWI and common failure mechanisms, recognise risk factors, understand property suitability, assess moisture-related concerns, and make informed, evidence-based decisions when surveying residential properties.
Through real case studies, practical inspection methodologies, and lessons learned from thousands of property assessments all across the UK, delegates will gain a deeper understanding of how cavity wall insulation interacts with the building envelope, why installations can fail, and the importance of balancing energy efficiency with long-term building performance, durability, and occupant wellbeing.
Find Out More & BookFree CWI Risk Check
Damp patches, black mould, cold walls, musty smells or higher heating bills — these can all be signs that your cavity wall insulation has failed. Take our free 2-minute risk assessment and get an instant indication of whether your property needs a professional inspection.