What is soot in fire restoration?
Soot is the carbonaceous particulate produced by incomplete combustion. Particles are 0.1 to 4 microns, electrostatically charged, and deposit on cool surfaces far from the fire source. Soot can be cleaned from most non-porous and many porous materials; char cannot. Per IICRC S700 §10.
Category: Fire & Smoke
Reviewed: 2026-04-19
Source: IICRC S700 §10
RP
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