IICRC MRS EXAM STUDY GUIDE
2025/2026 COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. Mold remediation - ANSWER ✔ The process of cleaning and removing
mold-contaminated materials to prevent health risks.
2. Airborne mold spores - ANSWER ✔ Spores that can spread to clean spaces
if not contained properly.
3. Mold colonies - ANSWER ✔ Groups of mold that can grow and spread in
damp environments.
4. Mold remediation process - ANSWER ✔ Involves cleaning, disinfecting,
and ensuring safety to prevent mold exposure.
5. Containment - ANSWER ✔ To prevent cross-contamination- Containment
is critical in preventing the spread of mold spores to unaffected areas, thus
managing cross-contamination.
6. Pressure differential during remediation - ANSWER ✔ Negative pressure of
0.05 inches of water column
,7. Containment barrier material - ANSWER ✔ 6-mil polyethylene sheeting
8. Airborne spores control method - ANSWER ✔ High-efficiency particulate
air (HEPA) filtering
9. Containment in mold remediation - ANSWER ✔ Containment is used to
prevent the spread of mold spores to unaffected areas during remediation.
10.Acceptable pressure differential in containment area - ANSWER ✔ A
negative pressure differential of 0.02 inches of water column is typically
maintained to ensure that spores do not escape the containment area.
11.Recommended air exchange rate during mold remediation - ANSWER ✔ An
air exchange rate of 3-5 air changes per hour is recommended to effectively
remove airborne spores.
12.Suitable material for constructing a containment barrier - ANSWER ✔
Plastic sheeting is lightweight, easy to install, and effectively prevents the
spread of mold spores.
13.Function of a HEPA filter in mold remediation - ANSWER ✔ HEPA filters
are designed to capture 99.97% of particles, including mold spores, ensuring
clean air in the remediation area.
14.Crucial step before beginning mold remediation - ANSWER ✔ Conducting
a thorough assessment of the mold presence helps identify the extent of
mold contamination and informs the remediation strategy.
,15.Action for contents in a mold-affected area prior to remediation - ANSWER
✔ Cleaning and sanitizing contents can prevent further contamination and
protect valuable items.
16.Recommended respirator for workers during mold remediation - ANSWER
✔ A half-face respirator with P100 filters provides adequate protection
against airborne mold spores.
17.Appropriate use of biocides during mold remediation - ANSWER ✔
Biocides should be used after physical removal to kill any remaining spores
on surfaces.
18.Ideal humidity level during mold remediation - ANSWER ✔ Maintaining
humidity between 30% and 50% helps prevent mold growth during the
remediation process.
19.Common mistake during mold remediation - ANSWER ✔ Improper
disposal of contaminated materials can lead to recontamination and further
mold growth.
20.Type of testing conducted after mold remediation - ANSWER ✔ Both air
and surface sampling provide a comprehensive assessment of mold presence
post-remediation.
21.Essential practice for effective mold remediation - ANSWER ✔ Sealing off
the work area is crucial to prevent the spread of mold spores during
remediation.
, 22.Primary risk associated with inadequate training in mold remediation -
ANSWER ✔ Inadequate training can lead to improper handling of mold,
increasing health risks and remediation failures.
23.Health hazards to workers - ANSWER ✔ Inadequate training can expose
workers to health risks associated with mold exposure.
24.Removal and replacement - ANSWER ✔ Porous materials, such as drywall,
often need to be removed and replaced to fully eliminate mold.
25.Transporting contaminated materials - ANSWER ✔ Sealed bags or
containers prevent the release of mold spores during transportation.
26.Function of an air scrubber - ANSWER ✔ Air scrubbers filter and remove
airborne mold spores, improving air quality in the work area.
27.Health implications of Stachybotrys - ANSWER ✔ Can have severe health
implications for individuals exposed to it.
28.Air quality improvement during remediation - ANSWER ✔ Achieved by
using HEPA filters to trap mold spores.
29.Mold exposure symptoms - ANSWER ✔ Can include headaches, fatigue,
and respiratory issues.
30.Cleaning mold-contaminated materials - ANSWER ✔ Essential to prevent
recontamination during remediation.
2025/2026 COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. Mold remediation - ANSWER ✔ The process of cleaning and removing
mold-contaminated materials to prevent health risks.
2. Airborne mold spores - ANSWER ✔ Spores that can spread to clean spaces
if not contained properly.
3. Mold colonies - ANSWER ✔ Groups of mold that can grow and spread in
damp environments.
4. Mold remediation process - ANSWER ✔ Involves cleaning, disinfecting,
and ensuring safety to prevent mold exposure.
5. Containment - ANSWER ✔ To prevent cross-contamination- Containment
is critical in preventing the spread of mold spores to unaffected areas, thus
managing cross-contamination.
6. Pressure differential during remediation - ANSWER ✔ Negative pressure of
0.05 inches of water column
,7. Containment barrier material - ANSWER ✔ 6-mil polyethylene sheeting
8. Airborne spores control method - ANSWER ✔ High-efficiency particulate
air (HEPA) filtering
9. Containment in mold remediation - ANSWER ✔ Containment is used to
prevent the spread of mold spores to unaffected areas during remediation.
10.Acceptable pressure differential in containment area - ANSWER ✔ A
negative pressure differential of 0.02 inches of water column is typically
maintained to ensure that spores do not escape the containment area.
11.Recommended air exchange rate during mold remediation - ANSWER ✔ An
air exchange rate of 3-5 air changes per hour is recommended to effectively
remove airborne spores.
12.Suitable material for constructing a containment barrier - ANSWER ✔
Plastic sheeting is lightweight, easy to install, and effectively prevents the
spread of mold spores.
13.Function of a HEPA filter in mold remediation - ANSWER ✔ HEPA filters
are designed to capture 99.97% of particles, including mold spores, ensuring
clean air in the remediation area.
14.Crucial step before beginning mold remediation - ANSWER ✔ Conducting
a thorough assessment of the mold presence helps identify the extent of
mold contamination and informs the remediation strategy.
,15.Action for contents in a mold-affected area prior to remediation - ANSWER
✔ Cleaning and sanitizing contents can prevent further contamination and
protect valuable items.
16.Recommended respirator for workers during mold remediation - ANSWER
✔ A half-face respirator with P100 filters provides adequate protection
against airborne mold spores.
17.Appropriate use of biocides during mold remediation - ANSWER ✔
Biocides should be used after physical removal to kill any remaining spores
on surfaces.
18.Ideal humidity level during mold remediation - ANSWER ✔ Maintaining
humidity between 30% and 50% helps prevent mold growth during the
remediation process.
19.Common mistake during mold remediation - ANSWER ✔ Improper
disposal of contaminated materials can lead to recontamination and further
mold growth.
20.Type of testing conducted after mold remediation - ANSWER ✔ Both air
and surface sampling provide a comprehensive assessment of mold presence
post-remediation.
21.Essential practice for effective mold remediation - ANSWER ✔ Sealing off
the work area is crucial to prevent the spread of mold spores during
remediation.
, 22.Primary risk associated with inadequate training in mold remediation -
ANSWER ✔ Inadequate training can lead to improper handling of mold,
increasing health risks and remediation failures.
23.Health hazards to workers - ANSWER ✔ Inadequate training can expose
workers to health risks associated with mold exposure.
24.Removal and replacement - ANSWER ✔ Porous materials, such as drywall,
often need to be removed and replaced to fully eliminate mold.
25.Transporting contaminated materials - ANSWER ✔ Sealed bags or
containers prevent the release of mold spores during transportation.
26.Function of an air scrubber - ANSWER ✔ Air scrubbers filter and remove
airborne mold spores, improving air quality in the work area.
27.Health implications of Stachybotrys - ANSWER ✔ Can have severe health
implications for individuals exposed to it.
28.Air quality improvement during remediation - ANSWER ✔ Achieved by
using HEPA filters to trap mold spores.
29.Mold exposure symptoms - ANSWER ✔ Can include headaches, fatigue,
and respiratory issues.
30.Cleaning mold-contaminated materials - ANSWER ✔ Essential to prevent
recontamination during remediation.
