Building Performance Diagnostics in Hemel Hempstead
Hemel Hempstead is a post-war Hertfordshire new town, with large estates and significant non-traditional (system-built and concrete) housing alongside the old town's period core. These construction types each have characteristic issues we diagnose and remediate.
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 Hemel Hempstead.
- 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 Hemel Hempstead, and how they perform.
Much of Hemel dates from the 1950s–70s new-town programme, including system-built and concrete-panel homes and conventional cavity housing, plus a historic old-town centre. Non-traditional construction often brings cold bridging, condensation and uncertainty over insulating walls.
- Post-war new-town estate housing
- Non-traditional / system-built homes
- Conventional cavity-wall semis
- Historic old-town period homes
- Let properties and HMOs
Thermal Imaging Surveys in Hemel Hempstead
In Hemel Hempstead, thermal imaging is invaluable on non-traditional homes, where the right insulation strategy is not obvious from outside.
- 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 Hemel Hempstead
We measure surface temperatures and humidity to confirm whether Hemel homes are suffering condensation or genuine damp.
- 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 Hemel Hempstead
Non-traditional and cavity walls, lofts and floors lead heat loss across Hemel's new-town stock.
- 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 Hemel Hempstead
Blower door testing quantifies draughts and helps verify works on system-built 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
From ventilation upgrades to careful wall, loft and floor insulation, we specify, install 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 Hemel Hempstead.
A technical, building-physics-led specialist in Hemel Hempstead.
Book a Building Performance Survey in Hemel Hempstead.
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.