Why mold-only isn't a real fix
The visible mold is downstream of high crawl humidity (typically >65% RH). Kill the mold, seal the surface, and within 6 to 18 months it returns, usually in slightly different spots. The only durable solution is to remove the moisture: that's what encapsulation does. Network specialists won't quote mold-only without also discussing encapsulation, because the work won't last otherwise.
What the IICRC protocol involves
- Containment, plastic sheeting + negative-pressure air scrubbers during work
- Kill, IICRC-approved antimicrobial applied to affected surfaces, dwell time per spec
- Material removal, visibly damaged wood and insulation removed and bagged
- HEPA vacuum, final cleaning of all surfaces in the work area
- Post-remediation verification, visual + sometimes laboratory air sample (optional, ~$280)
Common questions
Should I get an air-quality test first?
For typical visible mold in a crawl, no, the visible mold is the diagnosis. Air tests are useful when there's no visible mold but the homeowner suspects something. The diagnostic on the homepage is a better first step.
Is the mold dangerous?
Most crawl-space molds are surface molds (Aspergillus, Penicillium, Cladosporium), irritating to people with allergies or compromised immunity, but rarely "toxic" in the way internet sources sometimes claim. Network specialists won't fear-monger; they'll tell you what's actually there.