Infrared thermal imaging is an excellent diagnostic tool, but it requires specific environmental conditions to produce reliable results. When those conditions are not available, impedance scanning becomes the preferred solution.
Situations Where Infrared Is Less Effective
Infrared scans may be limited when:
- Roofs are heavily shaded
- Weather is consistently overcast
- Roof membranes are highly reflective
- Scans must be performed during the day
- Temperature differentials are insufficient
In these scenarios, impedance scanning offers a dependable alternative.
The Advantage of Tramex in Challenging Conditions
Because impedance scanning measures electrical resistance rather than temperature, it can be performed:
- Day or night
- In shaded or covered areas
- During variable weather conditions
This flexibility allows moisture surveys to proceed without delay and without compromising accuracy.
ElectroTherm Scans selects the appropriate diagnostic method—or combination of methods—based on site conditions to ensure dependable results every time.



