What is infrared thermography?

Infrared thermography is a non-destructive diagnostic technique that uses a thermal camera to measure and display apparent surface-temperature differences. In building investigations, these temperature patterns can help identify anomalies associated with moisture, insulation, thermal bridging, air leakage and other building-envelope conditions.

How does infrared thermography work?

All surfaces emit infrared radiation according to their temperature and other physical characteristics. A thermal camera detects this radiation and converts it into a visual representation called a thermogram, allowing temperature variations across a surface to be compared.

What can infrared thermography detect in a building?

Thermography can help identify thermal anomalies potentially associated with: Moisture Water infiltration Insulation deficiencies Thermal bridging Air leakage Roof anomalies Building-envelope deficiencies Condensation-related conditions A thermal anomaly identifies an area requiring interpretation; it does not automatically establish the cause.

Can an infrared camera see through walls?

No. An infrared camera measures the apparent temperature of the surface visible to the camera. It does not see through walls, ceilings, concrete or other building materials. Concealed conditions may influence surface temperatures, allowing them to produce detectable thermal patterns.

Can infrared thermography directly detect water?

No. A thermal camera does not directly detect water or moisture. Moisture can sometimes affect surface temperature because of evaporation, thermal conductivity and heat-storage characteristics, creating an anomaly that may warrant further investigation.

Can thermography help locate water infiltration?

Yes. Under suitable conditions, thermography can help identify thermal patterns that may be associated with moisture resulting from water infiltration. Findings should be correlated with visual observations, moisture measurements, infiltration history and other diagnostic information.

Why can wet materials appear different on a thermal image?

Wet and dry materials can respond differently to heating and cooling because moisture changes their thermal properties. Evaporation can also influence surface temperature. These effects can create thermal contrasts that help identify areas requiring additional investigation.

Does a thermal anomaly always indicate moisture?

No. Temperature differences can result from many factors, including insulation, air movement, thermal bridges, solar exposure, mechanical systems, different materials and environmental conditions. Professional interpretation is essential.

How can a suspected moisture anomaly be confirmed?

Depending on the building and condition, confirmation may involve moisture measurements, visual inspection, controlled water testing, exploratory openings or other appropriate investigative methods. Thermography helps direct the investigation; it does not necessarily replace confirmation.

Can infrared thermography help investigate recurring leaks?

Yes. Thermography can be particularly useful when water is travelling through concealed assemblies before becoming visible. Thermal patterns may help investigators identify areas requiring closer examination and potentially narrow the scope of additional testing.

FAQs Archive - groupescp.ca

What is infrared thermography?
How does infrared thermography work?
What can infrared thermography detect in a building?
Can an infrared camera see through walls?
Can infrared thermography directly detect water?
Can thermography help locate water infiltration?
Why can wet materials appear different on a thermal image?
Does a thermal anomaly always indicate moisture?
How can a suspected moisture anomaly be confirmed?
Can infrared thermography help investigate recurring leaks?

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