How Does Investigators Inspect And Find Out The Cause Of Fire At A Place

Investigators rely on several techniques and observations such as indications of flames, satellite imagery, chemical tests, etc. to determine what led to fire. So, if you want to know how fire is inspected at a place, then read this post till the end.

What is needed to become a fire investigator?

People who are interested in taking up this task start off as a firefighter. They later become investigators. These candidates have to undergo extensive training and attend different webinars and seminars on various subjects as mentioned under the “National Fire Protection Association”.

A fire forensic expert has to be certified in all these specified subjects in order to gain capability in inspection of fire at a place. Some of these subjects include fire dynamics, documentation of the scene, fire chemistry, etc.

How is the inspection of the fire carried out?

People believe that fire burns all the proof linked to it into a mass of ash. This is not true. The fire department arrives at the right time to extinguish the fire before it leads to complete damage. More the number of the things in the house are left in original or even semi damaged state, the easier it gets them to determine the start of fire.

Firefighters can see the region that has been affected by the most severe flames. This is the place where the fire has begun and has continued to burn for the maximum duration.

The color of the flame is taken into consideration by the firefighter along with the extent of smoke, the rate of spreading of fire, and the sound that fire creates. These are those factors that give an indication of what is burning as well as the way it is burning. After stopping of fire, the fire investigators will carefully examine the ashes to find out more clues.

Factors that determine the cause and origin of fire

There are a few factors that are needed by the fire investigating professionals to learn about the origin and reason of fire.


A fire that is very hot burns quickly and also moves rapidly along the path. This shows sharp demarcation lines between the things that are burned and that are not burned. This pattern is known as the “char pattern”. It can also be tracked in the backward direction.


A fire that raises in the upward direction in a V shape form begins against a wall. It leaves a chart pattern that points itself to the origin. A narrow V shape form is an indication that a fire was hotter as compared to normal. The reason for such extreme hotness can be due to supported by an accelerant such as kerosene, gasoline, etc.


Investigators look for any sign of “Heat shadows” that normally occurs when heavy furniture safeguards a part of any wall. These shadows have triangulated that assist in determining the point of origin.


So, these are the ways in which fire investigators perform a precise inspection of the occurrence of the fire at a place.

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