IAC2 Mold Sampling Decision Chart

(for use by mold inspectors, once a mold inspection has been ordered)

 

Condition
Swab Sampling
Tape Sampling
Interior Air
Sampling
Outdoor Air
Sampling
Carpet
Sampling
Wall Sampling
Visible apparent
mold.
Yes (or a tape sampling).
Yes (or a swab
sampling).
Yes.  Possibly two.  One at the HVAC supply (if installed).  One in each area with visible apparent mold growth.
Yes. Two outdoor samples (one windward; one leeward).
Possibly. Not required.  At the discretion
of the
inspector.
Possibly.  Not required.  At the discretion of the inspector.
No visible apparent
mold, but there are visible condition(s) conductive to mold growth.
Yes ( or a tape sampling). At water stains, water damage. areas of moisture, or other areas at the discretion of the inspector.
Yes (or a swab sampling). At water stains, water damage, areas of moisture, or other areas at the discretion of the inspector.
Yes.  Possibly two.  One at the HVAC supply (if installed).  One in each area with visible apparent mold growth.
Yes. Two outdoor samples (one windward; one leeward).
Yes. In the
area(s) of the building with condition(s)
conducive to
mold growth.
Yes. At the
wall with
condition(s)
conducive to
mold growth.
With
permission
from owner.
Destructive.
No visible apparent mold.
No visible conducive conditions.
Not required.
Not required.
Yes.  Possibly two.  One at HVAC (if installed).  One in the most lived-in common room such as the family or entertainment room.
Yes. Two outdoor
samples (one windward; one leeward).
Possibly.
Front of sofa;
Along side
bed.
Not required.

 Refer to IAC2 Mold Inspection Standards of Practice prior to performing any visual examination.
                                     
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