Mold isn't a cleaning problem. It's a building science problem. The fix is physical removal of contaminated material, source-water repair, and verification by a third party. Anyone selling you a fog-and-spray "mold killer" is selling you the wrong product.
Mold needs three things: moisture, food (cellulose-based building material), and time. Solve for the moisture and the rest follows. Common scenarios we handle:
ANSI/IICRC S520 (4th edition, 2024) is the governing standard for professional mold remediation. Its core principle: physical removal of contaminated material, not chemical "killing." Here's what compliant work looks like.
For affected areas over 100 sq ft or where occupant space could cross-contaminate, full containment with double 6-mil poly is required. No exceptions.
Air Filtration Devices (AFDs) maintain negative pressure inside containment, exhausting filtered air outside. Typically run 48–72 hours through clearance.
Post-Remediation Verification is performed by an independent assessor (CMI or CIH) — not the company that did the removal. Visual, moisture readings, air or surface sampling.
Visual walkthrough to scope the remediation. For complex or insurance-driven jobs, an independent assessor (CMI or CIH) is required first — Precision doesn't perform mold testing in-house.
Remediation fails without fixing the water intrusion. We identify the source and either repair it or coordinate with your plumber, roofer, or builder.
Poly barriers, HVAC isolation, negative-pressure AFDs. Decontamination chamber at the entrance for crew transit.
Porous materials (drywall, insulation, carpet pad) removed. Semi-porous materials (framing, concrete) HEPA-vacuumed and damp-wiped. EPA-registered antimicrobial as secondary, not substitute.
Independent PRV — moisture readings within normal range, no visible growth, air or surface sampling within acceptable limits. Clearance documentation issued.
Speed matters. Mold colonizes wet building materials within 24–72 hours. Call us before drying becomes remediation.
The IICRC classifies water by contamination level. The category drives the scope, the timeline, and the materials we can save versus remove.
Sanitary source: supply-line break, overflow from a clean tank, melted ice or snow. Most materials are salvageable if dried within 48 hours.
Significant contamination: washing machine overflow, dishwasher discharge, aquarium leak. Porous materials in contact typically removed.
Grossly contaminated: sewage, ground surface water, rising flood water. Porous materials are removed, period. Full containment required.
For small, obvious, single-source jobs, no — visible mold from a known water event is sufficient justification to remediate. For larger jobs, insurance claims, or anywhere the source isn't obvious, an independent assessor (CMI or CIH) is strongly recommended. They define the scope; we do the work; they verify the result. No conflict of interest.
Bleach can surface-clean non-porous materials, but it doesn't penetrate drywall, wood, or insulation. On porous materials, bleach leaves the food source (cellulose) and adds water — usually making the problem worse. The S520 standard explicitly disfavors "killing" frames. Physical removal is what works.
Standard policies generally exclude mold caused by long-term moisture or maintenance issues. Coverage is more likely when mold results from a covered peril — a burst pipe, storm damage, vandalism. Call your carrier first. We provide the documentation your adjuster will ask for.
A small bathroom or single-wall job: 1–2 days plus drying. A whole-basement Cat 3 with structural drying and rebuild scope: 1–3 weeks. We give you a written schedule with the estimate and update it daily.
The containment zone is off-limits during work. For isolated areas, occupants typically remain in the rest of the home. For whole-floor or HVAC-affecting work, vacating the property is safer and faster.
We'll tell you straight whether you need remediation or just better drying.
