Infrared imaging
provides important information relating to otherwise inaccessible areas of a residential or commercial building. The infrared
camera detects extremely small but crucial differences in surface temperature from one area of a house to another. These temperature
variations show up on the camera’s view screen as “cold” or “hot” spots, which reveal hidden
problems that often cannot be detected in the course of a traditional visual inspection.
These problems may include:
·
Faulty wiring, breakers and
fuses
·
Hidden moisture intrusion
·
The moisture sources of mold
·
Pipe and duct work leaks
·
Roof and ceiling leaks
·
Foundation cracks
·
Heat/energy loss
·
Structural concerns
·
Missing insulation
·
Ventilation problems
·
Moisture associated with termite
nests
·
Rats, mice and other pests
Combined with traditional home inspection techniques, the infrared inspection method reveals
substantially more of the house than can be perceived by the naked eye and conventional inspection tools. Many things can't
be seen with only a flashlight.
Examples of infrared inspection applications:
§
Water intrusion: scanning interior surfaces of a building with an infrared camera can reveal excess moisture due
to plumbing leaks, roof leaks, leaks around windows, etc. Wet areas of building materials cool when energy is transferred
during the water evaporation process; therefore, a wet (“cooler”) area will stand out from the surrounding dry
(“warmer”) surface.
§ Insulation deficiencies: appreciable
temperature differences, due to variations in thermal energy (heat) transfer, allow for detection of deficient or missing
insulation when scanning ceiling and wall surfaces. Infrared is especially effective on older homes with minimal insulation
that has become compressed in areas.
§
Roofing leaks: scanning roof coverings can reveal water intrusion and accumulated
moisture below the surface. Due to its thermal properties (high thermal capacity), water typically gives up heat at a much
slower rate than the surrounding roof materials. The areas of accumulated moisture can therefore be detected when scanning
the roof surface. This type of roof inspection is best done in the evening or early nighttime after thermal energy imparted
during the daytime is transferred or released.
§
Electrical systems: deficiencies within the electrical system can be made visually apparent by use of an infrared camera.
For example, a deficient connection between electrical components can result in resistance which will manifest in an apparent
temperature elevation when compared with similar types of connections under similar load conditions. An infrared
image of the electrical panel can reveal overheating of a circuit breaker.
§
Structural issues: differences in thermal capacity, conductivity, and other
intrinsic qualities of building structural components can allow for their detection when scanning walls, floors, and ceilings
with an infrared camera. Under the right temperature differential conditions, missing structural components, and portions
of structural components which are damaged (to the extent that their intrinsic qualities are significantly changed), can be
detected.
NOTE: Although infrared
thermal imaging is a far better diagnostic tool than the naked eye, it does not guarantee 100% accuracy, unless removal or
destruction of components can be achieved to validate findings. When possible, other tools are used to verify thermal images.
Thermal imaging combined with my traditional home inspection services improves the quality of the information you will have
at your disposal to make that all important decision regarding the property. But, even with these considerations I do not
claim to have x-ray vision. The infrared camera can not see through walls as it is measuring surface temperatures. Conditions
can change and may cause the apparent temperatures revealed on thermal images to be different at any given time.