Building Performance Diagnostics in City of London
The City of London is a predominantly commercial quarter with a distinctive residential core — most famously the Listed Barbican estate. Our role here is consultancy: overheating, indoor air quality, ventilation and acoustics in apartments and mixed-use buildings.
Investigation only, remedial works, or a complete retrofit — your choice.
RetrofitIQ is not only a diagnostics company. We take projects from first investigation through to verified improvement — and you decide how far we go. Engage us for an investigation on its own, for an investigation plus targeted remedial works, or for a complete building-performance and retrofit project in City of London.
- Airtightness improvements & draught-proofing
- Internal wall insulation (IWI)
- External wall insulation (EWI)
- Loft & roof insulation
- Suspended floor & underfloor insulation
- Thermal-bridge detailing & correction
- Extract ventilation & MVHR installation
- Soundproofing & acoustic upgrades
- General building-fabric improvements
The buildings of City of London, and how they perform.
City residential stock is dominated by mid-to-high-rise apartments, including the Barbican's exposed-concrete brutalist flats, and conversions above commercial floors. These are heavyweight or sealed buildings where solar gain, ventilation and noise — not draughts — drive comfort complaints.
- Barbican exposed-concrete Listed apartments
- Mid- and high-rise residential flats
- Office-to-residential conversions
- Mixed-use residential / commercial buildings
- Serviced and rented apartments
Thermal Imaging Surveys in City of London
In the City, thermal imaging checks concrete thermal-bridge details and façade performance rather than loft insulation.
- Mapping heat loss through walls, roofs and floors
- Locating missing, slumped or incomplete insulation
- Identifying thermal bridging and cold spots
- Highlighting surfaces at risk of condensation
- Revealing hidden defects behind finishes
Damp, Condensation & Mould Investigations in City of London
Condensation here is usually at cold bridges or in under-ventilated rooms; we measure to locate it.
- Separating condensation from penetrating and rising damp
- Finding mould behind wardrobes, furniture and in cold corners
- Measuring relative humidity, surface temperature and dew point
- Assessing ventilation provision and moisture sources
- Combining thermal imaging with a building-physics review
Heat Loss & Energy Efficiency Surveys in City of London
Priorities are solar-gain control and ventilation heat recovery rather than solid-wall loss.
- Pinpointing where heat escapes — walls, floors, roofs, windows and doors
- Setting fabric-first retrofit priorities in the right order
- Quantifying the impact of each potential improvement
- Assessing heat pump readiness where relevant
- Producing a clear, costed improvement plan
Blower Door Testing & Airtightness in City of London
These buildings are tight — our focus is ventilation commissioning, airflow and indoor air quality.
- Measuring air leakage and uncontrolled heat loss (ACH₅₀)
- Locating draughts with smoke tracing
- Identifying leakage paths through floors, lofts and services
- Guiding targeted airtightness improvements
- Verifying performance before and after retrofit works
Retrofit & Building Physics Advice
We specify and oversee ventilation, filtration, solar-control and acoustic measures, then verify the result.
- A fabric-first, Passive House-informed approach
- Retrofit advice aligned with PAS 2035 principles
- Internal and external wall insulation risk assessment
- Thermal-bridge reduction and condensation-risk modelling
- A coherent ventilation strategy to protect health and fabric
Common building performance problems in City of London.
A technical, building-physics-led specialist in City of London.
Book a Building Performance Survey in City of London.
Request a thermal imaging, damp, condensation or heat loss investigation — or speak to us about a full retrofit. We diagnose by measurement and, where you want it, carry out and verify the works.