GPR and thermal serve different roles in slab leak detection.
| Factor | Leak.ca | Thermal Imaging |
|---|---|---|
| What it shows | Pipe location, depth, path, rebar | Temperature anomaly indicating moisture |
| Sees water directly? | No — sees pipe/void/object | Yes — temperature change from water |
| Best for | Hot water slab leaks | All slab leaks when combined |
| Limitation | Requires temperature differential | Can't see pipe — needs GPR for that |