Commercial is a different job
Commercial Mold Jobs Start With a Protocol, Not a Spray Bottle
Residential jobs often start with a walk-through and a quote. Commercial jobs in Reamstown usually start with an independent assessor who inspects, takes readings and writes a remediation protocol that spells out containment, removal and clearance criteria. Keeping assessment and remediation separate protects the owner, and some states actually prohibit one firm from doing both on a single project.
Commercial crews work to IICRC S520, the recognized remediation standard, and to OSHA requirements for respiratory protection and PPE. The real protection comes from engineering controls, meaning critical barriers at every opening, HEPA air filtration devices pulling the zone negative, and a manometer recording pressure differential readings throughout each shift.
Commercial calls cluster around the same sources: ponding water on flat roofs working through the membrane, condensation on chilled-water piping, hotel PTAC sleeves and drain pans, walk-in cooler walls in restaurants and apartment units found moldy at turnover. Each one needs a crew that can work around tenants, guests, students or patients.