California Flooring Contractor License
Exam (C-15) Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. What is the main reason for using a moisture barrier under hardwood
flooring?
A. Increase flooring height
B. Prevent moisture from damaging wood
C. Improve insulation
D. Enhance soundproofing
Rationale: Moisture barriers are essential to prevent water vapor from
damaging wood, which can cause warping and mold.
2. Which tool is commonly used to stretch carpet during installation?
A. Circular saw
B. Floor roller
C. Power stretcher
D. Jamb saw
Rationale: A power stretcher ensures the carpet is tight and properly
secured to avoid wrinkles and trip hazards.
,3. What is the purpose of acclimating wood flooring before installation?
A. To clean the wood
B. To dry the wood faster
C. To allow the wood to adjust to room temperature and humidity
D. To apply sealant
Rationale: Acclimation prevents future expansion or contraction that could
damage the flooring.
4. What is the minimum temperature recommended for installing vinyl
flooring?
A. 32°F
B. 45°F
C. 65°F
D. 80°F
Rationale: Most vinyl flooring manufacturers recommend a minimum
temperature of 65°F to ensure proper adhesion and flexibility.
5. Which type of flooring is most sensitive to subfloor moisture?
A. Ceramic tile
B. Solid hardwood
C. Laminate
D. Carpet
Rationale: Solid hardwood is more likely to expand or contract when
exposed to moisture compared to other flooring types.
6. What is the correct method to check a concrete slab for moisture
content?
A. Sprinkle water and observe absorption
B. Use a thermometer
C. Use a calcium chloride test or a moisture meter
D. Knock and listen for sound
, Rationale: Industry-standard moisture tests like calcium chloride or
moisture meters give accurate results for flooring suitability.
7. Which fastener is typically used in nail-down hardwood flooring
installations?
A. Roofing nails
B. Concrete screws
C. Flooring cleats or staples
D. Brad nails
Rationale: Flooring cleats or staples are designed specifically for holding
hardwood flooring in place.
8. What is the purpose of a transition strip in flooring?
A. Aesthetic design only
B. To provide a smooth transition between different flooring types
C. To hide damage
D. To increase slip resistance
Rationale: Transition strips bridge height differences and provide safety
and aesthetic consistency.
9. When preparing a subfloor for laminate flooring, the surface should be:
A. Slightly uneven
B. Clean, dry, and level
C. Damped and sanded
D. Covered with carpet pad
Rationale: A level, dry subfloor is necessary to avoid gaps, creaks, or
premature wear in laminate flooring.
10. What type of glue is used for vinyl composition tile (VCT) installation?
A. Wood glue
B. Epoxy adhesive
C. Pressure-sensitive adhesive
D. Contact cement
Exam (C-15) Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. What is the main reason for using a moisture barrier under hardwood
flooring?
A. Increase flooring height
B. Prevent moisture from damaging wood
C. Improve insulation
D. Enhance soundproofing
Rationale: Moisture barriers are essential to prevent water vapor from
damaging wood, which can cause warping and mold.
2. Which tool is commonly used to stretch carpet during installation?
A. Circular saw
B. Floor roller
C. Power stretcher
D. Jamb saw
Rationale: A power stretcher ensures the carpet is tight and properly
secured to avoid wrinkles and trip hazards.
,3. What is the purpose of acclimating wood flooring before installation?
A. To clean the wood
B. To dry the wood faster
C. To allow the wood to adjust to room temperature and humidity
D. To apply sealant
Rationale: Acclimation prevents future expansion or contraction that could
damage the flooring.
4. What is the minimum temperature recommended for installing vinyl
flooring?
A. 32°F
B. 45°F
C. 65°F
D. 80°F
Rationale: Most vinyl flooring manufacturers recommend a minimum
temperature of 65°F to ensure proper adhesion and flexibility.
5. Which type of flooring is most sensitive to subfloor moisture?
A. Ceramic tile
B. Solid hardwood
C. Laminate
D. Carpet
Rationale: Solid hardwood is more likely to expand or contract when
exposed to moisture compared to other flooring types.
6. What is the correct method to check a concrete slab for moisture
content?
A. Sprinkle water and observe absorption
B. Use a thermometer
C. Use a calcium chloride test or a moisture meter
D. Knock and listen for sound
, Rationale: Industry-standard moisture tests like calcium chloride or
moisture meters give accurate results for flooring suitability.
7. Which fastener is typically used in nail-down hardwood flooring
installations?
A. Roofing nails
B. Concrete screws
C. Flooring cleats or staples
D. Brad nails
Rationale: Flooring cleats or staples are designed specifically for holding
hardwood flooring in place.
8. What is the purpose of a transition strip in flooring?
A. Aesthetic design only
B. To provide a smooth transition between different flooring types
C. To hide damage
D. To increase slip resistance
Rationale: Transition strips bridge height differences and provide safety
and aesthetic consistency.
9. When preparing a subfloor for laminate flooring, the surface should be:
A. Slightly uneven
B. Clean, dry, and level
C. Damped and sanded
D. Covered with carpet pad
Rationale: A level, dry subfloor is necessary to avoid gaps, creaks, or
premature wear in laminate flooring.
10. What type of glue is used for vinyl composition tile (VCT) installation?
A. Wood glue
B. Epoxy adhesive
C. Pressure-sensitive adhesive
D. Contact cement
