Building Performance Diagnostics · Central London · WC1

Building Performance Diagnostics in Bloomsbury

Bloomsbury is one of London's finest Georgian neighbourhoods — formal garden squares, terraces and institutional buildings, much of it Listed. Heritage protection shapes everything, so our work centres on measured, condensation-safe assessment and advice.

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 Bloomsbury.

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 · Bloomsbury

The buildings of Bloomsbury, and how they perform.

Bloomsbury's housing is largely Listed Georgian and early-Victorian terracing, with tall solid walls, original sash windows and lower-ground floors, much of it converted to flats or institutional use. External insulation is not permitted, making internal insulation, secondary glazing and airtightness the realistic levers.

Typical properties in Bloomsbury
  • Listed Georgian terraces & garden squares
  • Early-Victorian townhouses
  • Period houses converted into flats
  • Institutional and mixed-use buildings
  • Lower-ground-floor (basement) flats

Thermal Imaging Surveys in Bloomsbury

In Bloomsbury, thermal imaging shows where Listed solid walls can safely take internal 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 Bloomsbury

We measure to distinguish condensation and ground moisture from genuine damp in Bloomsbury's basements and 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 Bloomsbury

Tall solid walls, sash windows and large volumes lead Bloomsbury's heat demand.

  • 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 Bloomsbury

Blower door testing locates sash-box, floor and chimney leakage in WC1 period homes.

  • 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

Where heritage permits, we specify modelled internal insulation, secondary glazing and ventilation, and verify the works.

  • 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 Bloomsbury.

Listed-fabric constraints ruling out external insulation
Cold tall solid walls prone to condensation
Condensation on original single-glazed sash windows
Damp in lower-ground-floor and light-well flats
High heating demand in large-volume period rooms
Draughts through sash boxes, floors and chimneys
Overheating in upper-floor and roof-level flats
Why choose RetrofitIQ

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

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 Bloomsbury

Book a Building Performance Survey in Bloomsbury.

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.