Building Performance Diagnostics in Epsom
Epsom is a leafy Surrey commuter town of inter-war and post-war semis and larger detached homes. Fabric-first upgrades and heat pump readiness lead the conversation, and we provide the measured assessment behind those decisions.
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 Epsom.
- 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 Epsom, and how they perform.
The typical Epsom home is a cavity-walled 1930s or post-war semi with a loft-insulated pitched roof, alongside larger detached properties with bigger heat-loss budgets. Cavity insulation condition varies, and bays and extensions introduce thermal bridges affecting comfort and heat pump suitability.
- 1930s cavity-wall semis & detached houses
- Larger detached commuter homes
- Post-war suburban housing
- Modern estate houses
- Extended and loft-converted family homes
Thermal Imaging Surveys in Epsom
In Epsom, thermal imaging checks cavity and loft insulation and finds the cold spots that would undermine a heat pump.
- 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 Epsom
We confirm whether Epsom damp is condensation, a bridged cavity or a localised defect.
- 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 Epsom
Cavity condition, loft insulation, glazing and floor losses lead the heat-loss picture and heat pump readiness.
- 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 Epsom
Blower door testing quantifies background leakage that matters for comfort and low-temperature heating.
- 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 can deliver a fabric-first upgrade to get an Epsom home heat-pump-ready, then verify it.
- 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 Epsom.
A technical, building-physics-led specialist in Epsom.
Book a Building Performance Survey in Epsom.
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.