Home Health Diagnostic Survey in Central London
A comprehensive whole-home diagnostic assessment combining visual inspection, thermal imaging, moisture, humidity and airflow measurements to identify the root cause of building problems. Specialist building-performance diagnostics across Central London — WC1 · WC2 · EC1 · EC2 · EC3 · EC4 · W1 · SW1.
What we typically diagnose across Central London.
Central London — Westminster, Marylebone, Mayfair, Soho, Fitzrovia, Bloomsbury, Holborn, Clerkenwell, the City of London and the South Bank — has some of the most demanding building stock in the UK: Listed Georgian and Victorian period properties, prestige conversions, mansion blocks, and high-spec new-build apartments. Every project here must reconcile heritage constraints with modern building-performance expectations.
- Listed mansion blocks with single-skin solid brick walls and no permission for external insulation
- Original 6-over-6 sash windows with substantial heat loss around frames
- Mansion-block bedrooms and bathrooms with original single-pane glazing producing chronic winter condensation
- Internal courtyards trapping moisture-laden air with no cross-ventilation
- Original cast-iron service risers and chimney flues providing whole-building bypass paths
Real FLIR thermal images from completed surveys — see the full set in the gallery.
Real photos from a recent blower door airtightness test.
Smoke escaping at the eaves during a real blower door test — air-leakage path made visible.
What's included
- On-site visual inspection of the property and reported issues
- Thermal imaging survey of suspect areas (walls, ceilings, junctions, windows)
- Moisture readings on affected substrates
- Indoor relative humidity and surface temperature analysis
- Smoke tracing of suspected air-leakage paths (where required)
- Optional blower door test for whole-house airtightness
- Written diagnostic report with findings, photographs and recommendations
Who it's for
- Homeowners experiencing damp, mould, cold or high bills
- Landlords and housing associations investigating tenant complaints
- Architects and developers commissioning pre-purchase or pre-retrofit surveys
- Property managers needing evidence-based investigation reports
What we commonly discover during home health diagnostic survey investigations
- 01Cold reveals around windows and external door heads
- 02Air leakage through unsealed loft hatches and service penetrations
- 03Localised thermal bridges at wall/ceiling and wall/floor junctions
- 04Hidden moisture trapped within wall or floor build-ups
- 05Inadequate extract ventilation in bathrooms and kitchens
- 06Indoor humidity above 65% RH driving condensation on cold surfaces
- 07Previous retrofit insulation installed with workmanship gaps
Findings reflect patterns observed across completed RetrofitIQ projects — every survey is interpreted in the building’s specific context.
See this service applied on real, completed projects
One company. One process. One point of responsibility.
We don’t simply identify problems. We investigate, diagnose, design solutions, carry out the work and verify the results. Book a Home Health Diagnostic Survey and we’ll tell you exactly which remedial works (if any) are actually needed.