Building Performance Diagnostics · West London · SW6

Building Performance Diagnostics in Fulham

Fulham is defined by its tightly-packed two-storey Victorian terraces, many subject to extensive high-end refurbishment, loft conversions and basement excavations. These works create new junctions where heat loss, damp and condensation can appear, and we diagnose them precisely.

One company, the whole process

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 Fulham.

Investigate
Diagnose
Design
Remediate
Verify
Remediation & retrofit works we can carry out
  • 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
Local building stock · Fulham

The buildings of Fulham, and how they perform.

The classic Fulham house is a solid-wall Victorian terrace, often deeply remodelled with rear and side-return extensions and dug-out basements. Basement conversions in particular introduce risks of cold bridging, ground moisture and inadequate ventilation if not detailed and commissioned well.

Typical properties in Fulham
  • Two-storey Victorian solid-wall terraces
  • Houses with dug-out basement conversions
  • Rear and side-return extended homes
  • Period houses converted into flats
  • High-specification refurbishments

Thermal Imaging Surveys in Fulham

In Fulham, thermal imaging checks basement, extension and party-wall junctions where remodelled terraces lose heat or risk condensation.

  • 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 Fulham

We measure to confirm whether Fulham basement and extension damp is condensation, ground moisture or a 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 Fulham

Solid walls, sash windows, floors and extension junctions lead heat loss across Fulham's terraces.

  • 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 Fulham

Blower door testing is valuable on heavily remodelled Fulham homes to find leakage created by works.

  • 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 detail and remediate basement, extension and party-wall junctions, and verify comfort and airtightness.

  • 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
What we see locally

Common building performance problems in Fulham.

Damp, cold or poorly ventilated basement conversions
Condensation on cold reveals and thermal bridges at extensions
Cold solid walls and mould behind furniture
Heat loss through original sash windows and uninsulated floors
Overheating in glazed rear and roof extensions
Draughts around bays, floors and chimneys
Party-wall heat loss and noise between terraced homes
Why choose RetrofitIQ

A technical, building-physics-led specialist in Fulham.

Certified Passive House Designer
Building-physics-led diagnostics
FLIR thermal imaging
Calibrated moisture readings
Blower door / airtightness testing
Clear, costed reports and recommendations
End-to-end: investigation through to verified works
Fully insured, London-based specialists
Get started in Fulham

Book a Building Performance Survey in Fulham.

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.