Thermal
Imaging Surveys
Retrofit verification & fabric diagnostics.
Infrared thermographic surveys for PAS 2035 retrofit verification, building fabric diagnostics, new-build QA and pre-purchase due diligence. Trained thermographers, annotated reports.
- Calibrated high-resolution cameras
- PAS 2035 retrofit verification
- Full annotated report included
IR
Infrared Diagnostics
10°C
Minimum Differential
Oct–Mar
Optimal Season
PAS 2035
Retrofit Ready
What is a thermal imaging survey?
A thermal imaging survey uses a calibrated infrared camera to visualise heat patterns across a building's envelope. Areas that are warmer or colder than expected appear as thermal anomalies — revealing missing insulation, thermal bridges, air leakage paths and moisture ingress that the naked eye simply cannot see.
The technology is routine on PAS 2035 retrofit programmes (where it verifies insulation continuity), on new-build QA (catching fabric defects before handover), on heat-loss diagnostics for existing properties, and on pre-purchase surveys of older homes where hidden issues can otherwise surface expensively post-completion.
Why seasonal scheduling matters
Thermal imaging works by detecting temperature differences. A minimum inside-outside differential of around 10°C is needed for genuinely diagnostic results — meaning most surveys happen between October and March. Summer surveys are possible but much less useful; we will not book a marginal date.
How does it fit with other services?
Thermal imaging pairs naturally with air pressure testing (revealing where a leaky envelope is actually leaking) and SAP calculations (validating that the as-built fabric matches what was modelled). We often bundle surveys on retrofit and Passivhaus-adjacent projects.
When thermal imaging earns its fee.
Six scenarios where thermography reveals issues that would otherwise cost more to diagnose later or remain invisible entirely.
PAS 2035 retrofit verification
Post-install thermal confirmation of insulation continuity and identification of thermal bridges before handover. Common on domestic retrofit programmes.
Heat-loss diagnostics
Properties with unexpectedly high heating bills or persistent cold spots. Thermal imaging reveals which walls, windows or roof elements are underperforming.
New-build QA
Quality assurance on new-build fabric — catching installation defects in insulation, vapour barriers and air-tightness layers before handover.
Moisture & condensation
Damp patches show as thermal anomalies due to evaporation cooling. Useful for diagnosing the extent of condensation, rising damp or water ingress.
Pre-purchase diagnostics
Pre-purchase surveys on older properties — revealing fabric issues that conventional property surveys miss, particularly in period properties.
Commercial fabric surveys
Office, retail and industrial buildings — investigating heat loss, fabric defects or insulation performance for facilities managers and tenants.
Diagnostic results, not marketing images.
Calibrated equipment, seasonal scheduling, trained thermographers and annotated reports you can actually use to commission remedial works.
Clear value up front
Annotated report & remedial recommendations included — no hidden fees to interpret the images or follow up with your contractor.
Trained Thermographers
Surveys carried out by trained thermographers using calibrated high-resolution infrared cameras. Reports meet industry standards for retrofit and quality-assurance use cases.
PAS 2035 Verification
Post-install thermal verification for PAS 2035 retrofit programmes — confirming insulation continuity and identifying thermal bridges before sign-off.
Fabric Diagnostics
Identify missing insulation, thermal bridges, air leakage paths and moisture ingress — invisible to the naked eye, obvious under infrared.
Annotated Reports
Full written report with annotated thermal images, visible-light references, findings per elevation, and specific remedial recommendations.
Seasonal Scheduling
Surveys booked during optimal temperature differentials (typically October to March) so the results are genuinely diagnostic, not marginal.
Domestic & Commercial
From pre-purchase residential diagnostics to large commercial facility surveys — one provider, nationwide coverage, consistent reporting format.
Three steps to your thermal report.
From first call to annotated report. Scheduled for the optimal season so the results are genuinely diagnostic.
Tell Us The Goal
PAS 2035 verification, heat-loss diagnostics, QA on a new build, pre-purchase survey — the scope drives the approach. We quote a fixed price and book the optimal survey date.
We Survey On Site
Our trained thermographer attends with calibrated infrared equipment, captures images of every relevant elevation (and interior spaces where specified), and records visible-light reference photos.
Annotated Report
You receive a full written report with annotated thermal images, findings per elevation, and remedial recommendations — suitable for retrofit sign-off, Building Control or property due diligence.
Project-based pricing.
Thermal imaging surveys are quoted per property based on size, access and the type of report needed. Send us the address and scope for a fixed-price quote.
Domestic surveys typically £300–£750. Larger or commercial buildings quoted individually. Bundled pricing available when combined with air pressure testing or SAP calculations.
- Trained thermographer on site
- Calibrated high-resolution infrared camera
- Annotated written report
- Remedial recommendations included
*Pricing depends on property size, access and report scope. Contact us for an accurate quote.
Get your thermal survey quote
Takes 60 seconds. No obligation. Working to a retrofit handover deadline? Tell us — we'll prioritise your project.
Thermal imaging questions.
Everything you need to know about thermographic surveys — use cases, timing, equipment and report content.
Still Got a Question? Ask Us What is a thermal imaging survey?
A thermal imaging survey uses an infrared camera to visualise heat loss and temperature variation across a building's envelope. Areas that are warmer or colder than expected show up as thermal anomalies — highlighting missing insulation, thermal bridges, air leakage paths, and moisture ingress that are invisible to the naked eye.
When do I need a thermal imaging survey?
Common use cases: post-retrofit verification under PAS 2035, diagnostics on buildings with high heat bills or cold-spot complaints, insulation quality assurance on new builds, pre-purchase diagnostics on older properties, and remedial works on condensation or mould problems.
How much does a thermal imaging survey cost?
Thermal imaging surveys are quoted per property based on size, access and the type of report needed. A typical domestic property sits in the £300–£750 range; larger or commercial buildings are priced individually. Tell us the scope and we will confirm a fixed price.
Do I need a thermal imaging survey for PAS 2035?
PAS 2035 retrofit projects typically require post-install quality verification, and thermal imaging is one of the most effective methods for verifying insulation continuity. If you are working to a PAS 2035 retrofit programme, a thermal imaging survey is strongly recommended before final sign-off.
When can surveys be carried out?
Thermal imaging surveys are most effective during colder months (typically October to March) when the temperature difference between inside and outside is at least 10°C. Summer surveys are possible but less diagnostic. We book surveys to capture the best temperature differential.
What do I need to do before the survey?
The building needs to be heated to normal occupied temperatures for at least 24 hours before the survey. Windows and doors closed, heating on, no direct sunlight on the external surfaces being surveyed. We send a preparation checklist so you know exactly what to do.
What does the report contain?
A full written report with annotated thermal images, visible-light reference photos, a summary of findings for each elevation surveyed, and specific remedial recommendations where issues are identified. Suitable for retrofit sign-off, Building Control or property due diligence.
Can you identify moisture problems?
Yes — thermal imaging is highly effective at identifying moisture ingress and cold-bridging that is causing condensation. Damp patches show up as thermal anomalies because evaporation cools the surface. We can identify the extent of a problem and recommend what specialist follow-up may be needed.
Do you survey commercial buildings?
Yes — commercial thermal imaging surveys are common for facilities managers investigating heat loss, fabric defects or insulation performance on office, retail and industrial properties. Reports can be tailored for facilities management, tenant due diligence or building warranty claims.
Do you cover all UK regions?
Yes. We deliver thermal imaging surveys across England, Wales, Scotland and Northern Ireland, scheduling around the best seasonal temperature differentials for each region.