Charred Composite Shingle from a House Fire

Transmitted Off Crossed Polarized Light and Reflected Darkfield Illumination

Definition/Function:

Composite shingles are tar, mineral filler, and clay filler with cellulose and often glass fiber. When these shingles burn in a house fire some of the tar is lost as high hydrocarbon content soot agglomerates and some chars around the filler minerals.

Significance in the Environment:

Residue from burning composite shingles includes high hydrocarbon content soot agglomerates, carbon coated filler minerals, agglomerates containing mineral fillers and often fiber fragments in a char matrix, and agglomerates of the filler minerals in a char matrix.

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