IICRC MRS COMPLETE TEST GUIDE FOR MOLD REMEDIATION EXAM QUESTIONS WITH 100% CORRECT ANSWERS | UPDATED 2026

IICRC MRS COMPLETE TEST GUIDE FOR MOLD REMEDIATION EXAM QUESTIONS WITH 100% CORRECT ANSWERS | UPDATED 2026 The primary purpose of using containment during mold remediation is to prevent cross-contamination. - answer-Containment A negative pressure of 0.05 inches of water column is typically required between the containment area and the surrounding environment during remediation. - answer-Pressure Differential 6-mil polyethylene sheeting is the most appropriate material for building a containment barrier. - answer-Containment Barrier Material High-efficiency particulate air (HEPA) filtering is typically employed to effectively control airborne spores during remediation. - answer-Airborne Spores Control Method The best practice for removing contaminated materials such as drywall is gently cutting and removing to minimize dust. - answer-Best Practice for Removing Contaminated Materials Air monitoring should be conducted during mold remediation. - answer-Air Monitoring Timing Ensures that containment is effective and that spore levels are controlled throughout the remediation process. - answer-Continuous air monitoring Filters out 99.97% of airborne particles, making it suitable for mold remediation. - answer-P100 respirator Household detergent, vinegar, and sodium hypochlorite (bleach) are all effective, with sodium hypochlorite being widely used due to its effectiveness. - answer-Effective cleaning agents against mold Controlling humidity is essential in preventing mold after a water incident, especially when humidity levels are over 60%. - answer-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. - answer-Effective strategy for managing mold on porous materials Prevents external pollutants and mold spores from entering the containment area, protecting the cleanup effort. - answer-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. - answer-Common indicators of mold infestation Negative pressure containment is often used in larger remediation projects. - answer-Containment system used in larger remediation projects A containment method used to manage areas during mold remediation. - answer-Microbial barrier tents A method of enclosing an area to prevent the spread of mold spores. - answer-Soft-walled containment A technique that effectively manages larger areas and keeps mold spores contained during remediation. - answer-Negative pressure containment A device that reduces humidity to inhibit mold growth by providing a less favorable environment. - answer-Dehumidifier A process that uses microbial action to break down complex mold spores when physical removal is challenging. - answer-Bio-remediation Assessing the extent of water damage to determine necessary remediation measures and containment requirements. - answer-First step in mold remediation Individuals with respiratory conditions should be excluded due to higher risk of health complications. - answer-Workers excluded from mold remediation