Currently, there are no published exposure limits for mold. However, the U.S. Environmental Protection Agency (EPA - www.epa.gov) and the New York City Department of Health (NYCDOH – www.epa.gov) have published recommendations on selecting respirators for mold remediation activities based upon the size of the contaminated area
For areas less than 10 square feet, filtering facepiece respirators (N95 disposable respirators) or half masks with replaceable particulate filters may be used in conjunction with non-vented goggles.
For areas between 10 and 100 square feet, either a half mask with non-vented face goggles, or full facepiece respirators with 100 level particulate filters should be used.
For areas greater than 100 square feet, full facepiece respirators with 100 level particle filters should be used. The full facepiece may also be used as part of a powered air purifying respirator (PAPR) system.