Thermal Bridge, air leakage, missing insulation

Sample Building Performance Investigation Report — Thermal Imaging

A page from an anonymised building performance report detailing thermal imaging findings.

A sample building performance report page displaying six FLIR thermal images highlighting various temperature anomalies.

This page from a building performance report presents six FLIR thermal images. The thermograms display varying thermal patterns, highlighting distinct temperature differentials that indicate potential structural or insulation anomalies.

Technical insight

Thermal imaging is a non-destructive diagnostic tool used to visualise surface temperature variations across the building fabric. The thermograms shown capture distinct temperature differentials—often indicative of underlying issues such as thermal bridging, missing insulation, or unintended air leakage. By identifying these hidden anomalies, building performance experts can pinpoint exactly where a property is losing heat or experiencing draughts. Addressing these defects is a critical step in any energy retrofit programme, helping to minimise heat loss, reduce energy bills, and mitigate the risk of localised condensation and mould growth.

Likely cause

Possible missing or slumped insulation within the building fabric. Likely thermal bridging at structural junctions or localised air leakage paths.

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