Mold Remediation Technician January/February 2026 Certification Exam
Prep Memo | Complete Study Guide with Exam Questions & Answers, Mold
Biology, Health Effects, Inspection & Assessment, Containment Methods,
PPE & Safety Standards, Remediation Procedures, Documentation &
Industry Best Practices
Question 1: What is the primary purpose of mold remediation?
• A) To mask the smell of mold
• B) To remove visible mold and prevent future growth
• C) To paint over mold-infested areas
• D) To increase property value
Correct Option: B
Rationale: The primary purpose of mold remediation is to remove visible mold and
prevent its future growth, ensuring a safe and healthy environment.
Question 2: Which of the following is an appropriate method for drying water-
damaged materials?
• A) Using a fan to circulate air
• B) Leaving materials exposed to sunlight only
• C) Heating the area excessively
• D) Both A and B
Correct Option: D
Rationale: Using a fan to circulate air and exposing materials to sunlight can aid in
drying. However, excessive heating should be avoided as it may damage some
materials.
Question 3: When should personal protective equipment (PPE) be used in mold
remediation work?
• A) Only when working in visible mold
• B) At all times during the remediation process
• C) Only during the drying process
• D) When instructed by a supervisor
Correct Option: B
Rationale: Personal protective equipment (PPE) should be used at all times during the
remediation process to ensure safety from mold exposure.
,Question 4: What is a common sign of mold growth in a building?
• A) High ceilings
• B) Water stains on walls or ceilings
• C) New paint
• D) Open windows
Correct Option: B
Rationale: Water stains on walls or ceilings are common signs of moisture issues,
which can lead to mold growth.
Question 5: What is the first step in the mold remediation process?
• A) Cleaning and disinfecting surfaces
• B) Identifying and resolving moisture issues
• C) Removing contaminated materials
• D) Sealing off the area
Correct Option: B
Rationale: The first step in mold remediation is identifying and resolving moisture
issues to prevent future mold growth. Question 6: Which type of mold is commonly
found in homes?
• A) Aspergillus
• B) Penicillium
• C) Stachybotrys (black mold)
• D) All of the above
Correct Option: D
Rationale: All of these types of mold can be commonly found in homes, especially in
damp or water-damaged areas.
Question 7: What is the ideal humidity level to prevent mold growth?
• A) 10-20%
• B) 30-50%
• C) 60-70%
• D) 70-90%
,Correct Option: B
Rationale: Maintaining indoor humidity levels between 30-50% helps prevent mold
growth.
Question 8: What should be done with porous materials that are contaminated with
mold?
• A) Clean with soap and water
• B) Discard them
• C) Cover with a sealant
• D) Freeze them
Correct Option: B
Rationale: Porous materials, such as drywall and carpet, that are contaminated with
mold are often too difficult to clean and should be discarded.
Question 9: What is one potential health effect of mold exposure?
• A) Increased strength
• B) Respiratory issues
• C) Improved focus
• D) Skin immunity
Correct Option: B
Rationale: Mold exposure can lead to various health issues, primarily respiratory
problems, particularly in sensitive individuals.
Question 10: How should contaminated materials be disposed of during
remediation?
• A) Thrown in regular trash
• B) Double-bagged and labeled for disposal
• C) Burned onsite
• D) Left outside for collection
Correct Option: B
Rationale: Contaminated materials should be double-bagged and labeled to prevent
the spread of mold spores.
, Question 11: Which of the following is not recommended during mold removal?
• A) Using a vacuum with a HEPA filter
• B) Dry dusting mold with a cloth
• C) Wet cleaning surfaces
• D) Using barriers to contain mold spores
Correct Option: B
Rationale: Dry dusting can disperse mold spores into the air, making it unsafe; wet
cleaning is preferred.
Question 12: When setting up containment for remediation, what is crucial to
prevent contamination of unaffected areas?
• A) Opening windows
• B) Using plastic sheeting
• C) Leaving gaps for airflow
• D) Using fans to circulate air
Correct Option: B
Rationale: Using plastic sheeting to create a barrier is essential to contain the affected
area and prevent contamination.
Question 13: Which of the following is a common indicator of hidden mold?
• A) Musty odor
• B) Clean walls
• C) Bright colors
• D) High ceiling
Correct Option: A
Rationale: A musty odor often indicates the presence of hidden mold, even if it isn't
visible.
Question 14: What material is considered non-porous and can be cleaned and
reused after mold exposure?
• A) Wood
• B) Concrete
Prep Memo | Complete Study Guide with Exam Questions & Answers, Mold
Biology, Health Effects, Inspection & Assessment, Containment Methods,
PPE & Safety Standards, Remediation Procedures, Documentation &
Industry Best Practices
Question 1: What is the primary purpose of mold remediation?
• A) To mask the smell of mold
• B) To remove visible mold and prevent future growth
• C) To paint over mold-infested areas
• D) To increase property value
Correct Option: B
Rationale: The primary purpose of mold remediation is to remove visible mold and
prevent its future growth, ensuring a safe and healthy environment.
Question 2: Which of the following is an appropriate method for drying water-
damaged materials?
• A) Using a fan to circulate air
• B) Leaving materials exposed to sunlight only
• C) Heating the area excessively
• D) Both A and B
Correct Option: D
Rationale: Using a fan to circulate air and exposing materials to sunlight can aid in
drying. However, excessive heating should be avoided as it may damage some
materials.
Question 3: When should personal protective equipment (PPE) be used in mold
remediation work?
• A) Only when working in visible mold
• B) At all times during the remediation process
• C) Only during the drying process
• D) When instructed by a supervisor
Correct Option: B
Rationale: Personal protective equipment (PPE) should be used at all times during the
remediation process to ensure safety from mold exposure.
,Question 4: What is a common sign of mold growth in a building?
• A) High ceilings
• B) Water stains on walls or ceilings
• C) New paint
• D) Open windows
Correct Option: B
Rationale: Water stains on walls or ceilings are common signs of moisture issues,
which can lead to mold growth.
Question 5: What is the first step in the mold remediation process?
• A) Cleaning and disinfecting surfaces
• B) Identifying and resolving moisture issues
• C) Removing contaminated materials
• D) Sealing off the area
Correct Option: B
Rationale: The first step in mold remediation is identifying and resolving moisture
issues to prevent future mold growth. Question 6: Which type of mold is commonly
found in homes?
• A) Aspergillus
• B) Penicillium
• C) Stachybotrys (black mold)
• D) All of the above
Correct Option: D
Rationale: All of these types of mold can be commonly found in homes, especially in
damp or water-damaged areas.
Question 7: What is the ideal humidity level to prevent mold growth?
• A) 10-20%
• B) 30-50%
• C) 60-70%
• D) 70-90%
,Correct Option: B
Rationale: Maintaining indoor humidity levels between 30-50% helps prevent mold
growth.
Question 8: What should be done with porous materials that are contaminated with
mold?
• A) Clean with soap and water
• B) Discard them
• C) Cover with a sealant
• D) Freeze them
Correct Option: B
Rationale: Porous materials, such as drywall and carpet, that are contaminated with
mold are often too difficult to clean and should be discarded.
Question 9: What is one potential health effect of mold exposure?
• A) Increased strength
• B) Respiratory issues
• C) Improved focus
• D) Skin immunity
Correct Option: B
Rationale: Mold exposure can lead to various health issues, primarily respiratory
problems, particularly in sensitive individuals.
Question 10: How should contaminated materials be disposed of during
remediation?
• A) Thrown in regular trash
• B) Double-bagged and labeled for disposal
• C) Burned onsite
• D) Left outside for collection
Correct Option: B
Rationale: Contaminated materials should be double-bagged and labeled to prevent
the spread of mold spores.
, Question 11: Which of the following is not recommended during mold removal?
• A) Using a vacuum with a HEPA filter
• B) Dry dusting mold with a cloth
• C) Wet cleaning surfaces
• D) Using barriers to contain mold spores
Correct Option: B
Rationale: Dry dusting can disperse mold spores into the air, making it unsafe; wet
cleaning is preferred.
Question 12: When setting up containment for remediation, what is crucial to
prevent contamination of unaffected areas?
• A) Opening windows
• B) Using plastic sheeting
• C) Leaving gaps for airflow
• D) Using fans to circulate air
Correct Option: B
Rationale: Using plastic sheeting to create a barrier is essential to contain the affected
area and prevent contamination.
Question 13: Which of the following is a common indicator of hidden mold?
• A) Musty odor
• B) Clean walls
• C) Bright colors
• D) High ceiling
Correct Option: A
Rationale: A musty odor often indicates the presence of hidden mold, even if it isn't
visible.
Question 14: What material is considered non-porous and can be cleaned and
reused after mold exposure?
• A) Wood
• B) Concrete
