A thermal inspection report template clients can actually read

• Client, site address and date of the survey.
• Inspector name and qualification, and the camera model used.
• Scope: what was inspected, and what wasn't.
• Conditions: outdoor and indoor temperature, wind and sun for building work, load for electrical work.
• A findings table: finding number, location, component, temperature difference, priority, action.

Many clients read only this page. Make it complete on its own.

• Thermal and visual image side by side, the same framing, with the measurement drawn on the thermal one.
• Measurements: the hot spot (box max), a reference point on a similar component or the ambient, and the difference (ΔT).
• Object parameters: emissivity, reflected temperature, distance. This is what makes the number defensible.
• Location and component, specific enough to find again: panel, row, breaker number.
• Priority and recommended action, in plain words.

Use the same palette and temperature span on every page where images are compared, so colour means the same thing throughout.

Many electrical thermographers rank findings by temperature difference using bands similar to the NETA guidance: compared with a similar component under similar load, a ΔT of about 1–3 °C suggests a possible deficiency worth watching, about 4–15 °C a probable deficiency to repair when convenient, and above about 15 °C a major one to repair promptly. Follow the standard or client specification you work to, state which one in the report, and remember that load matters: a connection that is warm at 30% load will be much hotter at full load.

For insulation gaps, air leakage and moisture, the essentials are a sufficient indoor-outdoor temperature difference (often at least 10 °C), no recent direct sun on the surface, and the indoor and outdoor temperatures recorded on the summary page. Describe findings as thermal anomalies consistent with a cause ("consistent with missing insulation") unless you confirmed the cause another way, for example with a moisture meter.

Select the images for the report, lock a palette and span, draw your measurements, and add a note per image. The PDF export lays out the cover, the findings table and a page per image with thermal and visual side by side, the measurements, the object parameters and your logo. Images from FLIR and InfiRay / Topdon cameras can sit in the same report.