Acidic soot residue starts corroding unprotected metal within roughly two days in Bay City, WI 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.

Dry-chemical sponge work lifts embedded particulate without pushing it deeper.
HEPA extraction pulls particulate before any wet cleaning ever touches the fiber.
A completely different chemistry than what porous drywall responds to.
Acidic residue neutralized on faucets, hinges, and hardware before pitting starts.
Sequencing matters as much as the cleaning technique itself.
A property can look clean and still be recirculating particulate through the ducts.
A technician answers and mobilizes the nearest available crew.
No return trip needed once the surface classification is done.
Every surface gets classified and priced before any cleaning starts.
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, Bay City
"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, Bay City, WI
"Watching them vacuum the carpet before doing anything wet made sense once they explained wetting soot-loaded fiber just sets the stain." — Homeowner, Bay City
Porous materials absorb soot into the surface itself; non-porous ones just hold it on top.
We test each surface individually rather than assuming one method works everywhere.
Roughly two days under typical conditions, which is why we prioritize metal early.
Particulate removal and odor treatment are related but distinct services.
Yes, as long as HEPA extraction happens before any wet cleaning step.
Response times stay short across Bay City specifically because the corrosion window on metal fixtures doesn't wait.
