Thermal Imaging Termite Inspection in Adelaide

A thermal imaging termite inspection uses a calibrated infrared camera to read temperature differences across walls, ceilings, subfloors and roof voids — identifying the heat and moisture signatures of active termite galleries without opening up the structure. Pest Fox includes thermal imaging on every termite inspection in Adelaide as standard, paired with a moisture meter and a Termatrac T3i to confirm any anomaly the camera flags.

For the full inspection scope, report deliverables and pricing, see the termite inspection service page.

Why thermal imaging needs its own approach

A thermal camera doesn’t see termites. It sees heat — and heat is what gives a hidden colony away. Active Coptotermes acinaciformis workings inside a wall cavity hold a different surface temperature to the surrounding plaster because the colony generates metabolic heat and the gallery mud retains moisture. On a wall that reads 19.4°C, a 0.6–1.5°C cooler patch with a soft-edged shape is the signature we’re looking for.

Three things make this work — or fail:

• The camera. A consumer-grade FLIR ONE clipped to a phone is not the same instrument as a calibrated FLIR E-series or Testo 883 with a thermal sensitivity (NETD) below 50 mK. We run a class of camera that resolves the 0.5°C deltas the job depends on.
• The conditions. Thermal imaging needs a temperature differential between the wall cavity and the surrounding fabric — typically morning or late-afternoon scans on a day with a 15°C+ ambient swing. A flat midday scan will miss anomalies a 7am scan would catch.
• The interpretation. A cool patch can be a termite gallery, a plumbing leak, missing insulation, a stud, or a draft. A trained operator confirms the reading with a moisture meter (Tramex or Protimeter) and a Termatrac T3i — microwave radar that detects movement inside the cavity — before calling it.

This is why AS 4349.3-2010 and AS 3660.2-2017 position thermal imaging as a non-invasive aid to a competent inspection, not a replacement for one. The report stands on the inspector’s findings, evidenced by visual, physical and instrumented checks. A “thermal scan only” report is not an AS-compliant inspection.

How Pest Fox handles thermal imaging

Thermal imaging runs on every termite inspection without an upcharge — the camera comes out of the kit alongside the moisture meter, borescope and sounding probe.

1. Pre-scan brief — interior conditions stabilised (HVAC off 30+ minutes, doors closed, blinds open) so wall cavities reach a steady thermal state.
2. Walk-through scan — every accessible internal wall, ceiling and roof-void surface scanned at consistent stand-off distance. Subfloor scans where headroom permits.
3. Anomaly capture and confirmation — signatures captured, re-checked with the moisture meter, then scanned with the Termatrac T3i for movement inside the cavity. A Termatrac positive on a thermal anomaly is the highest-confidence non-invasive call this job has.
4. Report integration — thermal images attached to the AS 4349.3-2010 report with location, reading, corroboration and recommended next step.

The camera doesn’t replace the visual inspection. It tells us where to look harder.

Pricing context

Thermal imaging is included as standard on every Pest Fox termite inspection — no separate line item, no upcharge. The standard residential inspection band of $180–$350 covers the full scope.

A “thermal scan only” inspection is not AS 4349.3 compliant and we won’t sell one. Operators offering $90 thermal-only checks are selling a single tool, not an inspection. Re-scans after treatment sit inside the annual termite program, not billed separately.

Cost varies on the underlying inspection scope: property size, storeys, subfloor and roof-void access, outbuildings inside the 30m boundary, and whether the report carries pre-purchase deliverables.

When to choose this vs the parent service

If you’ve booked a routine annual inspection, thermal imaging is included — there’s no separate decision to make. Choose to flag thermal imaging specifically when:

• You’ve seen a stain, a hairline crack, or a doorway that’s started sticking, and you want a non-invasive check on the wall cavity before opening up plasterboard.
• A previous inspector said “looks clean” and you want a second opinion with instrumented backup.
• You’re renovating and want to scan walls before the trades hand the rooms back.

If you’re not sure what scope you need, the termite inspection service page walks the full inspection process and standards-compliance picture.

FAQs

Q: Does thermal imaging actually find termites? A: It finds the heat and moisture signatures of active galleries inside walls and timbers. The reading needs corroboration with a moisture meter and ideally a Termatrac T3i before it’s called — a cool patch can be insulation, plumbing, or a stud. Used correctly, it converts a visual inspection into a structural one. Used standalone, it’s a marketing prop.

Q: Is thermal imaging required by AS 3660.2 or AS 4349.3? A: No. Both standards treat thermal imaging as a non-invasive aid, not a mandated tool. Neither accepts a thermal-only report as a compliant inspection. We use it on every job because it raises detection sensitivity on concealed activity, but the AS 4349.3-2010 report is anchored to the inspector’s findings and conventional methods.

Q: What thermal camera do you use? A: A calibrated FLIR-class infrared camera with NETD sensitivity below 50 mK, paired with a Tramex/Protimeter moisture meter and a Termatrac T3i for movement confirmation. Consumer phone-clip cameras don’t resolve the temperature deltas this work depends on.

Q: Can thermal imaging see through brick or rendered walls? A: It reads surface temperature only. On brick veneer or solid masonry it picks up galleries close to the inner face but loses sensitivity on deeper cavities. On plasterboard internal walls it’s at its most useful. We adapt the technique to the wall type and call out limitations in the report.