Commercial projects bring different constraints
A commercial mold project involves more than the affected room. Employees, customers, students or tenants continue to use the building. Shared HVAC systems can move air between suites. Property managers, owners, insurers and sometimes tenants all need information. For Keyes, CA businesses, the plan has to protect occupants, limit downtime and produce records that satisfy everyone who will ask questions later.
The EPA publication Mold Remediation in Schools and Commercial Buildings is a widely used reference for this work, and OSHA has issued guidance on mold in the workplace. We use those documents, along with the IICRC S520 standard, to shape containment and work practices on commercial sites.
Planning before work begins
Our project lead walks the building with the facility manager to confirm the extent of growth, the moisture source and how the space is used. We identify which HVAC zones serve the area and whether they can be isolated, where crews and waste can move without passing through occupied areas, and what hours the work can take place. For restaurants and healthcare related tenants, we ask about any requirements from the operator or inspector that affect scheduling.
The result is a written scope that shows containment locations, the sequence of work, expected duration and the documentation you will receive. If the work must be phased, the scope shows each phase separately so tenants can be notified accurately.
Containment in occupied buildings
Work areas are enclosed with sheeting and, for larger areas, rigid or zippered entry points. Negative air machines with HEPA filters keep air flowing into the enclosure rather than out of it, and we can monitor that pressure difference during the project. Supply and return vents inside the zone are sealed. Where ceiling tile and drop ceilings are involved, we check the plenum above, since growth and dust can travel there.
Much commercial work is scheduled after hours or on weekends. Crews clean the path they use each shift and leave the enclosure sealed, so the surrounding space can be used the next morning.
Records and handoff
At closeout you receive photographs, moisture logs, a description of materials removed and a summary of containment and air filtration used. Many owners arrange post remediation verification by an independent consultant, and we leave containment standing until that is complete. The underlying water issue, whether a roof leak, plumbing failure or condensation from mechanical systems, is documented so it can be corrected. Water losses in commercial space are covered on our Commercial Water Damage page.
Commercial scope includes
- Walkthrough with facility management
- Written phased scope and schedule
- HVAC zone review and vent sealing
- Negative air containment with HEPA filtration
- After hours and weekend crews
- Closeout documentation package
Commercial project phases
- 1
Survey
Growth, moisture and building use are reviewed on site.
- 2
Plan
A written scope sets containment, sequence and hours.
- 3
Remediate
Crews work inside sealed areas, cleaning their path each shift.
- 4
Document
Records are delivered and verification is supported.