Mold Science & Testing Standards
A lot of what's published about mold testing overstates what the science actually supports. This section explains the real methods — air sampling, surface sampling, and DNA-based tests like ERMI and HERTSMI-2 — precisely, including the caveats most companies leave out. Every claim here is sourced and checked against current EPA, CDC, and peer-reviewed guidance before publication, not asserted from marketing copy.
ERMI and HERTSMI-2 Explained: What DNA-Based Mold Testing Actually Measures
A precise, science-first explanation of ERMI and HERTSMI-2 — the DNA-based mold tests homeowners increasingly ask about — including the honest caveat EPA itself attaches to ERMI that most companies leave out.
Read guide →The IICRC S520 Standard Explained: What Real Mold Remediation Actually Requires
A precise, step-by-step explanation of the ANSI/IICRC S520 standard — condition levels, containment classes, PPE requirements, and why 'kill it and leave it' is not legitimate remediation under any recognized standard.
Read guide →Mold Exposure and Health: What the Research Actually Shows
A precise summary of the 2004 Institute of Medicine report and WHO indoor air quality guidelines on damp indoor spaces and health — including exactly which health effects have strong evidence, which have limited evidence, and which remain unproven, without overstating any of it.
Read guide →Mold and Indoor Air Quality: Key Statistics, Sourced and Verified
Peer-reviewed and government-sourced statistics on mold and dampness prevalence in U.S. homes, the asthma burden attributable to indoor dampness, and the economic cost — every figure cited to its original source, not repeated secondhand.
Read guide →Mold Species Identification Guide: The Fungi Actually Found in Homes
A precise reference to the mold species most commonly found in residential and commercial buildings — appearance, preferred conditions, and what each species' presence typically indicates about a moisture problem.
Read guide →This is a growing section — more guides on mold species biology, air-quality lab methodology, and IICRC S520 assessment science are in progress.
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