Building Performance Diagnostics in Islington
Islington is a borough of grand Georgian and Victorian townhouses, conservation streets like Barnsbury and Canonbury, and countless period homes carved into flats. With solid-wall fabric, lower-ground-floor flats and heritage constraints, it rewards careful, building-physics-led diagnosis before any insulation goes in.
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 Islington.
- 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 Islington, and how they perform.
Many Islington homes are tall Georgian and early-Victorian terraces with single-skin solid walls, original sash windows and lower-ground (basement) floors that are prone to damp. Conservation-area and Listed status frequently rules out external insulation, so internal wall insulation must be hygrothermally modelled to avoid trapping moisture.
- Georgian & early-Victorian townhouses
- Period houses converted into flats
- Lower-ground-floor (basement) flats
- Edwardian mansion blocks
- Conservation-area properties (Barnsbury, Canonbury)
Thermal Imaging Surveys in Islington
In Islington, thermal imaging shows where heritage solid walls are coldest and whether internal insulation can be applied safely.
- 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 Islington
We frequently re-diagnose 'rising damp' in Islington basements that is actually a mix of condensation, ground moisture and poor ventilation — confirmed by measurement.
- 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 Islington
Tall solid walls, sash windows and basement floors lead Islington's heat-loss budgets.
- 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 Islington
Blower door testing locates the chimney, sash-box and floor-void leakage typical of N1 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 vapour-open, modelled internal insulation and ventilation — and can carry out 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
Common building performance problems in Islington.
A technical, building-physics-led specialist in Islington.
Book a Building Performance Survey in Islington.
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.