Black mould around windows
Most commonly associated with condensation at cold bridges around reveals and lintels. Diagnosis requires surface-temperature, ambient RH and ventilation assessment — not just surface treatment.
Forensic Building Pathology | Damp & Mould | Housing Disrepair
Building Pathology Diagnostics
Specialist damp, mould and housing disrepair diagnostics for landlords, legal teams, residents, housing providers and property professionals who need clear evidence, root-cause analysis and court-ready reporting.
What is Building Pathology Diagnostics?
A specialist consultancy focused on causes, not symptoms.
Building Pathology Diagnostics is a specialist building pathology consultancy focused on damp, mould, condensation, leaks, housing disrepair, Awaab’s Law compliance and expert reporting. The service identifies the underlying causes of building-fabric defects — not just the visible symptoms.
Our work supports landlords, social housing providers, managing agents, legal teams, residents and property professionals who need forensic evidence, clear diagnosis and reporting that holds up to scrutiny.
Evidence-Led Diagnosis
Damp and mould have more than one cause.
Damp and mould can be linked to condensation, ventilation failure, cold bridging, leaks, penetrating damp, failed insulation, poor heating strategy or fabric failure. Treating the symptom without identifying the underlying cause leads to recurrence. Evidence-led diagnosis separates fact from assumption and points remedial work at the right target.
Core Services
What we deliver
- Damp and mould inspections
- Housing disrepair surveys
- CPR Part 35 expert reports
- Awaab's Law support
- HHSRS damp and mould assessment
- Thermal imaging inspections
- Moisture profiling
- Root-cause analysis
- Scott Schedule support
Specialist Topics
Areas of focus
- Damp and mould
- Housing disrepair
- CPR Part 35
- Awaab's Law
- HHSRS
- Condensation
- Penetrating damp
- Cold bridging
- Leaks
- Ventilation failure
- Thermal imaging
- Moisture readings
- Root cause analysis
- Expert witness reports
Answer-First Guidance
What you’re looking at, before you book
Brown staining on ceilings
Often a top-down moisture indicator: roof, parapet, flashing, gutter, soil pipe or upstairs plumbing leak. Pattern and weather correlation matter; staining edge characteristics inform the likely source.
Mould in bedrooms
Frequently linked to night-time RH, heating strategy, insulation, and ventilation rather than fabric failure alone. Forensic diagnosis separates occupancy factors from building-fabric defects.
Mould returning after treatment
Recurrence after wash-off indicates an unresolved root cause — surface treatment does not address the underlying moisture pathway. Recurrence is a diagnostic signal, not a maintenance issue.
Awaab’s Law & Housing Provider Support
A defensible investigation method
Our inspections support landlords and managing agents with the evidence required for an Awaab’s Law-aligned response. Each inspection follows the same disciplined sequence:
- 01Record complaint, property details and affected rooms.
- 02Inspect visible defects, staining, mould and fabric deterioration.
- 03Capture photographs and diagnostic evidence.
- 04Use moisture readings and thermal imaging where appropriate.
- 05Assess ventilation, heating, building fabric and potential leak sources.
- 06Identify the most likely root cause.
- 07Provide diagnosis, prognosis and remedial recommendations.
- 08Separate resident advice from landlord repair obligations.
Legal & Expert Reporting
Reporting that supports decisions
CPR Part 35 Reports
Court-ready expert reports structured for civil proceedings — duty to the court, factual basis, methodology, opinion and limitations clearly separated.
Scott Schedules
Per-defect schedules supporting claimant / defendant positions, with remedial scope reference and evidence anchoring.
Landlord Response Packs
Evidence-led response packs covering inspection findings, repair obligations, remedial scope and statutory framework relevance.
Resident Advice
Plain-English summaries that separate resident-side actions (ventilation, heating, occupant signals) from landlord-side repair obligations.
Pathology Explained
Go deeper on the underlying pathology
Condensation vs Penetrating Damp
How to tell them apart at first inspection, why the wrong diagnosis leads to recurring failure, and what evidence each diagnosis requires.
Read more →Cold Bridging
Where cold bridges form, how thermal imaging confirms them, and why insulation strategy and detailing matter as much as fabric repair.
Read more →Ventilation Failure
Trickle vents, extract fans, passive stack ventilation, occupant-load and the diagnostic signals that point at ventilation as the underlying cause.
Read more →Awaab's Law
What Awaab's Law requires of social housing landlords, what is in force at the report date, and how investigation evidence supports compliance.
Read more →Frequently Asked
Questions we hear most
Q.What does Building Pathology Diagnostics do?
Building Pathology Diagnostics is a specialist building pathology consultancy focused on damp, mould, condensation, leaks and housing disrepair. We identify the underlying causes of building-fabric defects rather than treating only the surface symptoms, and produce evidence-led reports for landlords, legal teams, residents, housing providers and property professionals.
Q.Can you provide housing disrepair reports?
Yes. We provide forensic housing disrepair surveys, CPR Part 35-style expert reports, Scott Schedule support and HHSRS damp and mould assessments. Reports are evidence-led and structured for use by legal teams, instructing solicitors and housing providers.
Q.What is the difference between condensation and penetrating damp?
Condensation occurs when warm, moist air meets a cold surface and is typically driven by ventilation, heating and insulation conditions inside the dwelling. Penetrating damp occurs when external moisture enters the building fabric through defects such as failed pointing, defective rainwater goods, perimeter sealants, parapet detailing or roof failures. The two have different causation pathways and require different remedial action, so accurate diagnosis matters.
Q.Do you support Awaab's Law compliance?
Yes. We support landlords, social housing providers and managing agents with Awaab's Law-aligned investigation, including dated inspection, root-cause analysis, diagnosis, prognosis and remedial-recommendation reporting. Statutory timeframes and applicability are confirmed against tenure, landlord type and the relevant commencement phase at the time of the report.
Q.Do you use thermal imaging?
Yes. Thermal imaging is used as part of evidence-led diagnosis where appropriate — for example, to identify cold bridging, surface temperature anomalies or concealed moisture pathways. Thermal imaging is used alongside moisture readings, visual inspection and resident statements; it is not used as a standalone diagnostic tool.
Next Step
Ready to commission an inspection?
Request an inspection or return to the homepage to explore the wider service. All work is led by an experienced building pathology specialist and is independent of contractors, claim- management companies and remediation suppliers.