Building Performance Diagnostics · South London · SW2, SW9

Building Performance Diagnostics in Brixton

Brixton is a vibrant, dense SW2/SW9 neighbourhood of Victorian terraces, large council estates and period conversions, with a substantial rented sector. Condensation, mould and cold solid-wall homes are the everyday issues, and we resolve them with measurement and remediation.

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 Brixton.

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 · Brixton

The buildings of Brixton, and how they perform.

Brixton's terraces are solid-wall with suspended floors, widely subdivided into flats and let as HMOs. Its estates bring concrete-framed and panel blocks with thermal bridges; high occupancy and limited ventilation drive humidity and mould harder than the fabric alone.

Typical properties in Brixton
  • Victorian solid-wall terraces
  • Period houses converted into flats
  • Concrete-framed and panel estates
  • Landlord-let flats and HMOs
  • New-build infill apartments

Thermal Imaging Surveys in Brixton

In Brixton, thermal imaging shows whether mould is driven by cold surfaces, missing insulation or poor ventilation.

  • 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 Brixton

Our measured condensation and mould investigations give Brixton landlords and owners a defensible diagnosis and fix.

  • 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 Brixton

Solid walls, floors and lofts lead loss in the terraces; floor-slab bridges lead it in the estates.

  • 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 Brixton

Blower door testing quantifies draughts across Brixton's converted and let stock.

  • 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 install effective ventilation, insulate cold surfaces and verify that humidity and comfort improve.

  • 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 Brixton.

Black mould in converted and let flats with poor ventilation
Condensation streaming down windows in winter
Cold external walls and corners in solid-wall homes
Cold concrete bridges and corners in estate flats
Heat loss through uninsulated walls, floors and lofts
Inadequate bathroom and kitchen extraction
Damp at low level on solid walls misread as rising damp
Why choose RetrofitIQ

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

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 Brixton

Book a Building Performance Survey in Brixton.

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.