Where do soot residues typically gravitate or migrate to?

Soot residues typically gravitate or migrate to cooler surfaces due to the physical properties of soot and its behavior in the environment. During a fire, soot is produced as a byproduct of incomplete combustion and is carried by hot air and smoke. As the hot smoke rises and cools, the soot particles within it begin to lose energy and settle onto surfaces that are cooler than the air surrounding them. Cooler surfaces create a temperature differential that encourages the soot to condense and adhere, leading to heavy deposits where air flow may be reduced and temperatures are lower.

In the context of cleaning or restoration after a fire, understanding this behavior is crucial. It helps technicians locate and effectively clean areas affected by soot, as these residues may settle into upholstery, carpets, and other materials that exist in cooler environments, often away from the heat source of the fire.