IICRC MRS COMPLETE TEST GUIDE
FOR MOLD REMEDIATION. EXAM
QUESTIONS AND ANSWERS 100% PASS
The primary purpose of using containment during mold remediation is to prevent cross-
contamination. - ANS Containment
A negative pressure of 0.05 inches of water column is typically required between the
containment area and the surrounding environment during remediation. - ANS Pressure
Differential
6-mil polyethylene sheeting is the most appropriate material for building a containment barrier.
- ANS Containment Barrier Material
High-efficiency particulate air (HEPA) filtering is typically employed to effectively control
airborne spores during remediation. - ANS Airborne Spores Control Method
The best practice for removing contaminated materials such as drywall is gently cutting and
removing to minimize dust. - ANS Best Practice for Removing Contaminated Materials
Air monitoring should be conducted during mold remediation. - ANS Air Monitoring Timing
Ensures that containment is effective and that spore levels are controlled throughout the
remediation process. - ANS Continuous air monitoring
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Filters out 99.97% of airborne particles, making it suitable for mold remediation. - ANS P100
respirator
Household detergent, vinegar, and sodium hypochlorite (bleach) are all effective, with sodium
hypochlorite being widely used due to its effectiveness. - ANS Effective cleaning agents
against mold
Controlling humidity is essential in preventing mold after a water incident, especially when
humidity levels are over 60%. - ANS Critical factor to prevent mold growth in water-damaged
buildings
Removal and disposal of porous materials like carpets is often the best approach as they can
trap mold spores. - ANS Effective strategy for managing mold on porous materials
Prevents external pollutants and mold spores from entering the containment area, protecting
the cleanup effort. - ANS Significance of establishing negative air pressure in containment
Visible mold growth, musty odors, and water stains on walls are indicators, while high levels of
UV light are not. - ANS Common indicators of mold infestation
Negative pressure containment is often used in larger remediation projects. -
ANS Containment system used in larger remediation projects
A containment method used to manage areas during mold remediation. - ANS Microbial
barrier tents
A method of enclosing an area to prevent the spread of mold spores. - ANS Soft-walled
containment
A technique that effectively manages larger areas and keeps mold spores contained during
remediation. - ANS Negative pressure containment
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
FOR MOLD REMEDIATION. EXAM
QUESTIONS AND ANSWERS 100% PASS
The primary purpose of using containment during mold remediation is to prevent cross-
contamination. - ANS Containment
A negative pressure of 0.05 inches of water column is typically required between the
containment area and the surrounding environment during remediation. - ANS Pressure
Differential
6-mil polyethylene sheeting is the most appropriate material for building a containment barrier.
- ANS Containment Barrier Material
High-efficiency particulate air (HEPA) filtering is typically employed to effectively control
airborne spores during remediation. - ANS Airborne Spores Control Method
The best practice for removing contaminated materials such as drywall is gently cutting and
removing to minimize dust. - ANS Best Practice for Removing Contaminated Materials
Air monitoring should be conducted during mold remediation. - ANS Air Monitoring Timing
Ensures that containment is effective and that spore levels are controlled throughout the
remediation process. - ANS Continuous air monitoring
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Filters out 99.97% of airborne particles, making it suitable for mold remediation. - ANS P100
respirator
Household detergent, vinegar, and sodium hypochlorite (bleach) are all effective, with sodium
hypochlorite being widely used due to its effectiveness. - ANS Effective cleaning agents
against mold
Controlling humidity is essential in preventing mold after a water incident, especially when
humidity levels are over 60%. - ANS Critical factor to prevent mold growth in water-damaged
buildings
Removal and disposal of porous materials like carpets is often the best approach as they can
trap mold spores. - ANS Effective strategy for managing mold on porous materials
Prevents external pollutants and mold spores from entering the containment area, protecting
the cleanup effort. - ANS Significance of establishing negative air pressure in containment
Visible mold growth, musty odors, and water stains on walls are indicators, while high levels of
UV light are not. - ANS Common indicators of mold infestation
Negative pressure containment is often used in larger remediation projects. -
ANS Containment system used in larger remediation projects
A containment method used to manage areas during mold remediation. - ANS Microbial
barrier tents
A method of enclosing an area to prevent the spread of mold spores. - ANS Soft-walled
containment
A technique that effectively manages larger areas and keeps mold spores contained during
remediation. - ANS Negative pressure containment
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
