Acidic soot residue starts corroding unprotected metal within roughly two days in Excelsior, MN 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.
A standard shop vacuum does the opposite of what's needed here.

Sponges get rotated out constantly since a loaded sponge starts redepositing soot.
Wetting a soot-loaded carpet before vacuuming just sets the stain.
A completely different chemistry than what porous drywall responds to.
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.
No return trip needed once the surface classification is done.
You see the plan split by surface class before approving anything.
Both tracks get worked through to a final inspection you sign off on.
"I didn't realize our drywall and our tile backsplash needed totally different cleaning approaches until they explained the classification step." — Homeowner, Excelsior
"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, Excelsior, MN
"The HEPA extraction step before any wet cleaning turned out to be the reason our carpet actually came clean." — Homeowner, Excelsior
Porous materials absorb soot into the surface itself; non-porous ones just hold it on top.
Classification happens before any cleaning tool comes out.
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.
Our Soot Cleanup crews cover Excelsior and the surrounding zip codes, carrying tools for both surface tracks on every truck.
