Acidic soot residue starts corroding unprotected metal within roughly two days in Haymarket, VA conditions, which is why classification happens fast, not as a leisurely first step.
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Treating both classes the same way is the most common soot-cleanup mistake.
Using the wrong tool on either class tends to make the residue worse.
Metal fixtures get attention early since acidic residue starts pitting fast.
Fine particulate captured rather than recirculated back into the air.

Sponges get rotated out constantly since a loaded sponge starts redepositing soot.
Wetting a soot-loaded carpet before vacuuming just sets the stain.
Solvent-based agents lift residue that a dry sponge would just smear across a hard surface.
Acidic residue neutralized on faucets, hinges, and hardware before pitting starts.
Ceilings get worked before walls so falling particulate doesn't recontaminate finished surfaces below.
Vents and returns cleaned on the same visit since they keep redistributing soot otherwise.
A technician answers and mobilizes the nearest available crew.
Crews arrive carrying tools for both the porous and non-porous tracks.
You see the plan split by surface class before approving anything.
Both tracks get worked through to a final inspection you sign off on.
"Learning that porous and non-porous surfaces get treated completely differently was new information, but it made sense once explained." — Homeowner, Haymarket
"They got to our kitchen faucet fast enough that it never even started pitting, which the adjuster said was lucky timing on our part." — Homeowner, Haymarket, VA
"Watching them vacuum the carpet before doing anything wet made sense once they explained wetting soot-loaded fiber just sets the stain." — Homeowner, Haymarket
The wrong method on either class tends to spread or set the residue worse.
We test each surface individually rather than assuming one method works everywhere.
That window is a major reason response speed matters here.
Cleaning reduces odor, but persistent smell sometimes needs a separate treatment.
Yes, as long as HEPA extraction happens before any wet cleaning step.
Response times stay short across Haymarket specifically because the corrosion window on metal fixtures doesn't wait.
