What Is the IICRC S520 Standard and Why Does It Matter?

The Standard That Governs Professional Mold Remediation

The IICRC S520, formally the ANSI/IICRC S520 Standard for Professional Mold Remediation, is the most comprehensive protocol governing how mold remediation should be conducted in residential and commercial properties across the United States. It defines the practices, procedures, and documentation requirements that separate legitimate professional remediation from work that looks professional but is not.

Craig Herrmann, founder and president of Mold Eliminators, did not just study the S520. He co-authored it.

What the S520 Actually Covers

The standard addresses every phase of the remediation process. Assessment and investigation: how to properly identify mold growth, determine contamination categories, and document conditions before work begins. Moisture source correction: the requirement that the underlying moisture source be identified and corrected as part of any compliant remediation. Without this step, the standard considers the project incomplete.

Containment requirements specify physical barriers, negative air pressure, and the prevention of cross-contamination during active work. PPE requirements define what respiratory protection, body protection, and eye protection are appropriate for different contamination levels. Remediation techniques specify methods for cleaning, removing, and disposing of contaminated materials at different contamination categories. Post-remediation verification requires independent clearance testing before a project is considered complete. Documentation standards define what records must be maintained throughout.

Craig Herrmann’s Role in Writing It

Craig Herrmann served on the ANSI/IICRC S520 Consensus Body for over six years. This body deliberates over what the protocol should require, how those requirements should be worded, and what evidence supports each provision. He contributed directly to the 4th Edition, published in 2024.

Craig is one of only three IICRC Master Certified Flood Experts in all of Southern Nevada. The Master Certification is the highest designation in the restoration industry. In this market, there is no one more qualified.

Why This Matters When You Are Choosing a Company

Many mold companies claim to follow industry standards. Those claims are easy to make and difficult for consumers to evaluate. The distinction with Mold Eliminators is verifiable. Craig Herrmann’s involvement in the S520 Consensus Body is a matter of public record. His name is on the document that defines the standard every other company is supposed to follow.

When Craig Herrmann assesses your home, he is not consulting a checklist someone else developed. He is the person who determined what that checklist should contain and why. The judgment behind every recommendation comes from the same thinking that went into writing the national standard.

What S520 Compliance Means for Your Remediation

S520-compliant remediation means the moisture source is identified and corrected before the project is closed. Containment is established to specification, not improvised. Contaminated materials are removed based on contamination category, not just what is visible. Post-clearance verification by an independent laboratory is completed before the job is signed off. You receive complete documentation of the entire process.

That documentation matters beyond peace of mind. Insurance companies, real estate transactions, and legal proceedings all benefit from a fully documented, S520-compliant remediation record.

To have your Las Vegas home assessed by the team that literally wrote the standard, call (702) 442-1126. Learn more about our mold remediation services.

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