Thermal imaging is the use of light rays that are invisible to the naked eye. There is an infinite range of light that is invisible to the naked eye. The wave lengths of light that are invisible to the naked eye are actually quite small. All light is identified by its wave length, frequency and energy.

Human eyes only see light in the wavelength range from 400 to 750 nm (nanometers). X rays and Gamma rays were initially thought to be particle rays rather than light rays, hence the terms rays. Radio waves are an example of low-energy light waves, and they are often described in terms of their frequency.

A prism placed into a ray of sunshine in a dark room reflects the colours of the rainbow using a property known as dispersion. This is the method Sir William Herschel utilized in the 1800’s in conjunction with thermometers to discern the presence of invisible light rays. He called his discovery the thermometric spectrum later to be known as infrared.

Although un-able to detect the volume of air leakage in a building the infrared device can identify the area of leakage. This is a quick and reliable method for testing the building envelope for leaks or failure of systems. Cold areas are quickly detected by using a infrared camera in the hands of an experienced professional. Prevention and detection are the two main uses of Thermal Imaging.
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The benefits of employing infrared thermography in buildings are; Air leakage pathways present within a completed construction can be identified and rectified prior to subjecting the building to air permeability tests, reducing the risk of repeat testing being required; Depending upon the nature of the construction, even a building that meets or exceeds the building regulations may still be at risk of premature deterioration due to air leakage and subsequent condensation, therefore identifying where air leakage is occurring can be critical; Air leakage pathways can often indicate rainwater ingress pathways further adding to the potential benefits of an infrared survey; and Thermography is commonly used to identify air change rates with the help of the so-called ‘blower-door’ process, which creates under-pressure in buildings. Because the air pressure outside is higher than the pressure inside, the air will try to enter through unsealed areas. Using an infrared camera, this airflow can easily be seen, clearly revealing any unsealed areas, which can then be attended to before coverings and fittings make correcting this potential fault both expensive and time-consuming.

Napoleon Home Inspections was the first company in Simcoe County to provide Thermal Imaging as part of their home inspection service. Qualifications such as, Registered builder with HUDAC, Wett Certified and a Certified Building Code Official with the Ontario Building Officials Association show a level of training which most home inspectors fail to achieve.

Learn more about Professional Home Inspections. Stop by napoleon.cc site where you can find out all about About the Barrie Home Inspector and what a professional can do for you.