The Mold & Indoor Air Quality Library can't be printed. Read it online at a2zhomeco.com/mold-resources.
In the News Tarrant County jury awards $21.6M over sewer gas and mold October 14, 2026

Mold & Indoor Air Quality Library

Common Questions

Should I leave my house during mold remediation?

Answered from: EPA 402-K-01-001, CDC Mold Cleanup Guide, IICRC S520

Answer

It depends on the size of the job and who lives in the home. EPA says the decision to move people out should weigh how big the affected area is, any health effects occupants already have, and the risks from debris and the work itself, with particular attention to people with asthma, allergies or weakened immune systems. CDC advises people with breathing problems or weakened immune systems to stay away from moldy sites, and says children shouldn't take part in cleanup.

The S520 standard expects remediators to make reasonable efforts to inform occupants and protect them from exposure during the work, and to send health questions to a healthcare professional.

Our recommendation

For anything beyond a small, contained job, and for anyone pregnant, very young, elderly, or with asthma or a weakened immune system, ask your doctor and plan to be out of the work area until clearance.

What the sources say

“The decision to relocate occupants should consider the size of the area affected, the extent and types of health effects exhibited by the occupants, and the potential health risks associated with debris and activities during the remediation project.”

“When considering the issue of relocation, be sure to inquire about, accommodate, and plan for individuals with asthma, allergies, compromised immune systems, and other health-related concerns.”

“People with breathing problems like asthma or who have weakened immune systems should stay away from moldy sites. Children should not take part in disaster cleanup work.”

“Reasonable efforts should be made to inform occupants of and protect them from similar exposure as a result of investigation and remediation activities.”

IICRC S520, Fourth edition, 2024, Sec. 1.1, p. 23 Best practice In the library