MOLD REMEDIATION TECHNICIAN
CERTIFICATION EXAM PRACTICE
QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A | INSTANT DOWNLOAD PDF
1. What is the primary cause of mold growth indoors?
A. Poor ventilation
B. Excess moisture
C. Dust accumulation
D. High indoor temperature
B. Excess moisture
Moisture is the key factor in mold growth because mold spores need
water to grow.
2. Which type of personal protective equipment (PPE) is essential
when performing mold remediation?
A. Gloves and apron
B. Respirator and gloves
C. Hard hat and boots
D. Safety goggles only
B. Respirator and gloves
A respirator protects from inhaling spores, and gloves prevent skin
contact with mold.
3. What is the recommended first step before starting mold
remediation?
,A. Wetting the mold
B. Containing the affected area
C. Using bleach directly
D. Painting over mold
B. Containing the affected area
Containment prevents spores from spreading to unaffected areas.
4. How should HVAC systems be handled during mold remediation?
A. Turn off and seal ducts if contaminated
B. Spray with disinfectant
C. Ignore if the mold is minor
D. Only clean the filters
A. Turn off and seal ducts if contaminated
HVAC systems can spread spores; containment and cleaning are crucial.
5. Which of the following is an acceptable method for removing mold
from porous materials?
A. Sanding
B. HEPA vacuuming and removal
C. Painting over
D. Wiping with water only
B. HEPA vacuuming and removal
Porous materials like drywall often need removal; vacuuming alone may
not suffice.
6. What type of mold is commonly black and potentially toxic?
A. Aspergillus
B. Stachybotrys chartarum
C. Penicillium
D. Cladosporium
B. Stachybotrys chartarum
, This species is sometimes called “black mold” and can produce
mycotoxins.
7. What is the minimum air filtration method recommended during
remediation?
A. Standard household vacuum
B. HEPA filtration
C. Activated carbon filter
D. Electrostatic filter
B. HEPA filtration
HEPA filters capture tiny mold spores that can remain airborne.
8. Why is moisture measurement important before and after
remediation?
A. To check wall strength
B. To ensure mold will not return
C. To locate hidden wiring
D. To determine temperature levels
B. To ensure mold will not return
Without addressing moisture, mold growth is likely to recur.
9. When removing contaminated carpet, what is the proper
procedure?
A. Cut in small sections and remove slowly
B. Roll tightly and dispose in sealed bags
C. Shake outside to remove spores
D. Clean with a damp mop
B. Roll tightly and dispose in sealed bags
Sealing prevents spores from contaminating other areas.
10. Which cleaning solution is generally recommended for non-porous
surfaces?
A. Water only
CERTIFICATION EXAM PRACTICE
QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A | INSTANT DOWNLOAD PDF
1. What is the primary cause of mold growth indoors?
A. Poor ventilation
B. Excess moisture
C. Dust accumulation
D. High indoor temperature
B. Excess moisture
Moisture is the key factor in mold growth because mold spores need
water to grow.
2. Which type of personal protective equipment (PPE) is essential
when performing mold remediation?
A. Gloves and apron
B. Respirator and gloves
C. Hard hat and boots
D. Safety goggles only
B. Respirator and gloves
A respirator protects from inhaling spores, and gloves prevent skin
contact with mold.
3. What is the recommended first step before starting mold
remediation?
,A. Wetting the mold
B. Containing the affected area
C. Using bleach directly
D. Painting over mold
B. Containing the affected area
Containment prevents spores from spreading to unaffected areas.
4. How should HVAC systems be handled during mold remediation?
A. Turn off and seal ducts if contaminated
B. Spray with disinfectant
C. Ignore if the mold is minor
D. Only clean the filters
A. Turn off and seal ducts if contaminated
HVAC systems can spread spores; containment and cleaning are crucial.
5. Which of the following is an acceptable method for removing mold
from porous materials?
A. Sanding
B. HEPA vacuuming and removal
C. Painting over
D. Wiping with water only
B. HEPA vacuuming and removal
Porous materials like drywall often need removal; vacuuming alone may
not suffice.
6. What type of mold is commonly black and potentially toxic?
A. Aspergillus
B. Stachybotrys chartarum
C. Penicillium
D. Cladosporium
B. Stachybotrys chartarum
, This species is sometimes called “black mold” and can produce
mycotoxins.
7. What is the minimum air filtration method recommended during
remediation?
A. Standard household vacuum
B. HEPA filtration
C. Activated carbon filter
D. Electrostatic filter
B. HEPA filtration
HEPA filters capture tiny mold spores that can remain airborne.
8. Why is moisture measurement important before and after
remediation?
A. To check wall strength
B. To ensure mold will not return
C. To locate hidden wiring
D. To determine temperature levels
B. To ensure mold will not return
Without addressing moisture, mold growth is likely to recur.
9. When removing contaminated carpet, what is the proper
procedure?
A. Cut in small sections and remove slowly
B. Roll tightly and dispose in sealed bags
C. Shake outside to remove spores
D. Clean with a damp mop
B. Roll tightly and dispose in sealed bags
Sealing prevents spores from contaminating other areas.
10. Which cleaning solution is generally recommended for non-porous
surfaces?
A. Water only
