Flooring Contractor Exam (C-15)
Questions and Correct Answers
(Verified Answers) Plus Rationales 2025
Q&A | Instant Download PDF
Question 1
What is the primary responsibility of a C-15 Flooring Contractor?
A. Install roofing materials
B. Install, repair, and finish floor coverings
C. Install plumbing systems
D. Perform electrical work
Answer: B
Rationale: A C-15 Flooring Contractor specializes in installing, repairing, and
finishing flooring materials such as carpet, hardwood, vinyl, laminate, tile, and
resilient flooring.
Question 2
Before installing any flooring material, the installer should first:
A. Apply adhesive
B. Inspect the subfloor
C. Install baseboards
D. Polish the finished floor
Answer: B
Rationale: The subfloor must be inspected for cleanliness, levelness, moisture,
and structural soundness before installation.
,Question 3
The primary purpose of a subfloor is to:
A. Improve paint adhesion
B. Support the finished flooring
C. Reduce lighting costs
D. Hold insulation only
Answer: B
Rationale: The subfloor provides a stable, structural base for the finished floor
covering.
Question 4
Excess moisture in a concrete slab can cause:
A. Improved adhesion
B. Flooring failure
C. Increased durability
D. Faster installation
Answer: B
Rationale: Moisture can cause adhesives to fail, wood to warp, and resilient
flooring to bubble or loosen.
Question 5
A moisture meter is used to measure:
A. Floor thickness
B. Moisture content
C. Adhesive strength
D. Room temperature
Answer: B
,Rationale: Moisture meters determine whether the subfloor is dry enough for
flooring installation.
Question 6
Which flooring material expands and contracts the most with humidity?
A. Ceramic tile
B. Hardwood
C. Concrete
D. Stone
Answer: B
Rationale: Wood is hygroscopic and changes dimension with moisture content.
Question 7
Acclimation of hardwood flooring means:
A. Painting the boards
B. Allowing flooring to adjust to site conditions
C. Cutting boards to size
D. Sanding before installation
Answer: B
Rationale: Acclimation minimizes expansion and contraction after installation.
Question 8
A level subfloor helps prevent:
A. Proper adhesion
B. Uneven finished flooring
C. Material delivery
D. Paint failure
, Answer: B
Rationale: Uneven subfloors can lead to gaps, squeaks, or cracked flooring.
Question 9
The primary purpose of underlayment is to:
A. Replace the subfloor
B. Provide a smooth support layer
C. Decorate the floor
D. Reduce paint costs
Answer: B
Rationale: Underlayment improves support, smoothness, and sometimes sound
reduction.
Question 10
A vapor barrier primarily helps prevent:
A. Scratches
B. Moisture migration
C. Color fading
D. Heat loss
Answer: B
Rationale: Vapor barriers reduce moisture transmission from below.
Question 11
Which tool is commonly used to check floor levelness?
A. Utility knife
B. Spirit level
Questions and Correct Answers
(Verified Answers) Plus Rationales 2025
Q&A | Instant Download PDF
Question 1
What is the primary responsibility of a C-15 Flooring Contractor?
A. Install roofing materials
B. Install, repair, and finish floor coverings
C. Install plumbing systems
D. Perform electrical work
Answer: B
Rationale: A C-15 Flooring Contractor specializes in installing, repairing, and
finishing flooring materials such as carpet, hardwood, vinyl, laminate, tile, and
resilient flooring.
Question 2
Before installing any flooring material, the installer should first:
A. Apply adhesive
B. Inspect the subfloor
C. Install baseboards
D. Polish the finished floor
Answer: B
Rationale: The subfloor must be inspected for cleanliness, levelness, moisture,
and structural soundness before installation.
,Question 3
The primary purpose of a subfloor is to:
A. Improve paint adhesion
B. Support the finished flooring
C. Reduce lighting costs
D. Hold insulation only
Answer: B
Rationale: The subfloor provides a stable, structural base for the finished floor
covering.
Question 4
Excess moisture in a concrete slab can cause:
A. Improved adhesion
B. Flooring failure
C. Increased durability
D. Faster installation
Answer: B
Rationale: Moisture can cause adhesives to fail, wood to warp, and resilient
flooring to bubble or loosen.
Question 5
A moisture meter is used to measure:
A. Floor thickness
B. Moisture content
C. Adhesive strength
D. Room temperature
Answer: B
,Rationale: Moisture meters determine whether the subfloor is dry enough for
flooring installation.
Question 6
Which flooring material expands and contracts the most with humidity?
A. Ceramic tile
B. Hardwood
C. Concrete
D. Stone
Answer: B
Rationale: Wood is hygroscopic and changes dimension with moisture content.
Question 7
Acclimation of hardwood flooring means:
A. Painting the boards
B. Allowing flooring to adjust to site conditions
C. Cutting boards to size
D. Sanding before installation
Answer: B
Rationale: Acclimation minimizes expansion and contraction after installation.
Question 8
A level subfloor helps prevent:
A. Proper adhesion
B. Uneven finished flooring
C. Material delivery
D. Paint failure
, Answer: B
Rationale: Uneven subfloors can lead to gaps, squeaks, or cracked flooring.
Question 9
The primary purpose of underlayment is to:
A. Replace the subfloor
B. Provide a smooth support layer
C. Decorate the floor
D. Reduce paint costs
Answer: B
Rationale: Underlayment improves support, smoothness, and sometimes sound
reduction.
Question 10
A vapor barrier primarily helps prevent:
A. Scratches
B. Moisture migration
C. Color fading
D. Heat loss
Answer: B
Rationale: Vapor barriers reduce moisture transmission from below.
Question 11
Which tool is commonly used to check floor levelness?
A. Utility knife
B. Spirit level
