We're currently building and accrediting this CPD course for surveyors and property professionals. Register your interest below and we'll let you know as soon as enrolment opens.
Why This Course Matters
Millions of UK properties have cavity wall insulation installed — and a significant number have defects, debris, or failures that go undetected for years, leading to damp, mould, and structural damage.
CWI defects are rarely visible externally. Without invasive borescope inspection, failed insulation, mortar snots, and cavity bridging go unnoticed during standard property surveys.
Many surveys rely on visual-only assessment. When CWI issues are missed, reports can understate serious risks — leaving homeowners, buyers, and lenders exposed to costly remedial works.
Failed cavity wall insulation can cause penetrating damp, internal mould growth, thermal bridging, and deterioration of internal finishes — affecting health, property value, and insurance.
Cavity wall insulation was installed in millions of homes across the UK as part of government energy efficiency initiatives. While many installations perform as intended, a substantial number have failed — often due to poor workmanship, inappropriate property selection, or pre-existing building defects that were missed during installation.
The problem is that these failures are largely invisible. A wall can look perfectly sound from the outside while the cavity is compromised — bridged with mortar droppings, saturated with moisture, or filled with poorly installed insulation that has slumped or degraded. Standard visual surveys simply cannot detect these issues.
This course exists to close that knowledge gap — equipping surveyors and property professionals with the understanding, techniques, and evidence-based approach needed to identify properties at risk, advise clients accurately, and recommend appropriate further investigation.
Who Should Attend
No prior CWI experience is required. The course is designed for anyone involved in assessing, reporting on, or managing residential property condition.
Anyone involved in assessing residential property condition will benefit from this course.
In Development
The OSCAR Onsite CWI Awareness for Surveyors Course is a comprehensive, evidence-led CPD programme designed to give surveyors, property professionals, and construction specialists a thorough understanding of cavity wall insulation — its purpose, common failure mechanisms, and the wider implications of defective installations.
Accreditation In Progress
We're working through the CPD accreditation process now — register to be notified when it's live.
Register Your Interest
Complete the form and we'll notify you as soon as the course is accredited and open for bookings.