Preventing Mold-Related Problems in the Indoor Workplace

Preventing Mold-Related Problems in the Indoor Workplace
A Guide for Building Owners, Managers and Occupants
OSHA
U.S. Department of Labor
Occupational Safety and Health Administration
Contents
Introduction 4
Background 5
Overview 6
Mold 6
Where molds are found 6
The causes of molds in buildings 6
Why building owners and managers need to be
concerned about mold 7
Building-related illnesses (BRIs) 8
How sick building syndrome (SBS) differs from BRI 8
BRIs linked to mold exposure 8
Building-Related Illnesses 9
Health effects that can be caused by mold 9
Preventive Maintenance 9
Preventing mold growth in occupied areas 9
Preventing mold and bacterial growth in the building’s
ventilation system 10
Cleaning the building’s air ducts 11
Protecting building occupants during building
renovations or remodeling 11
Building Evaluation 12
What to do if you suspect that your building
has mold 12
Selecting a qualified professional who can assist in
providing a safe and healthful work environment 12
Sampling for mold 13
Mold sampling strategies 143
The meaning of mold sampling results that are in
CFU/m2 and CFU/m3 14
Mold Control and Remediation 15
The purpose of mold remediation 15
Actions for Employees to Take 15
What to do about mold in the workplace 15
Additional Help in Addressing Mold-Related Problems 16
Where to get more information 16
Methods 17
Appendix 18
Allergy 18
Allergic rhinitis 18
Allergic asthma 18
Hypersensitivity pneumonitis 19
Ventilation pneumonitis 20
How HP differs from asthma 20
Infection 20
Systemic fungal infections 20
Toxin-Mediated Conditions 21
Mycotoxins 21
Toxic mold 22
References 23
OSHA Assistance 27
OSHA Regional Offices
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