Building Performance Diagnostics in Westminster
Westminster is a dense, high-value central district of mansion blocks, period townhouses and mixed-use buildings, much of it Listed. Our work here is largely consultancy — overheating, indoor air quality, condensation and heritage-safe retrofit assessment for flats and refurbishments.
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 Westminster.
- 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 Westminster, and how they perform.
Westminster's stock ranges from grand stucco and brick mansion blocks to Georgian townhouses and modern apartments above commercial floors. Heritage protection is widespread, so external changes are constrained, and the recurring issues are overheating, ventilation and condensation rather than simple draughts.
- Mansion blocks and period apartments
- Georgian & Victorian townhouses
- Mixed-use residential / commercial buildings
- Listed and conservation-area properties
- High-specification refurbishments
Thermal Imaging Surveys in Westminster
In Westminster, thermal imaging checks heritage solid walls and thermal-bridge details rather than hunting for missing 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 Westminster
We measure to pinpoint condensation and ventilation faults in Westminster's mansion flats and period rooms.
- 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 Westminster
Tall solid walls, single glazing and large volumes lead heat demand; overheating control matters as much as 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 Westminster
We focus on ventilation provision, airflow and indoor air quality alongside targeted draught-proofing.
- 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, solar-control, acoustic and heritage-safe insulation measures, then verify the outcome.
- 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 Westminster.
A technical, building-physics-led specialist in Westminster.
Book a Building Performance Survey in Westminster.
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.