What does soot residue form when it combines with moisture or humidity?

Soot residue is primarily composed of carbon particles and can contain various other substances depending on the materials that were burned. When soot combines with moisture or humidity, it undergoes a chemical reaction that can create acidic compounds. This process leads to the formation of acid residue, which can be particularly damaging to surfaces and materials in a structure due to its corrosive nature.

Acid residues are a significant concern in restoration following a fire because they can lead to further deterioration of materials, staining, and an increased risk of secondary damage. For example, acid residues can corrode metals, damage painted surfaces, and contribute to deeper penetration of contaminants into materials. Understanding the relationship between soot and moisture is essential for properly assessing damage and determining the appropriate restoration methods to effectively clean and treat affected areas.