AZ ROC – CR-15 Flooring Contractor Examination
Questions and Correct Answers (Verified Answers)
Plus Rationale 2027 Q&A| Instant Download Pdf
1. What is the primary purpose of acclimating flooring materials
before installation?
A. To make the flooring easier to cut
B. To increase the flooring’s color variation
C. To allow the material to adjust to the installation environment
D. To eliminate the need for subfloor preparation
Rationale: Flooring materials can expand, contract, or otherwise
change dimensions in response to temperature and humidity.
Acclimation allows the material to reach conditions closer to those of
the installation environment, reducing the risk of excessive
movement, gaps, buckling, or other installation problems.
2. Before installing most resilient flooring, what should be checked
first?
,A. The color of the walls
B. The condition and suitability of the subfloor
C. The height of the ceiling
D. The location of furniture
Rationale: A flooring installation depends heavily on the condition of
the substrate. The subfloor should be structurally sound, clean, dry,
sufficiently smooth, and appropriate for the selected flooring and
adhesive system.
3. Which condition is most likely to cause adhesive failure beneath
resilient flooring?
A. Properly cleaned concrete
B. Correctly prepared plywood
C. Excessive moisture in the substrate
D. Properly installed underlayment
Rationale: Excess moisture can interfere with adhesive bonding and
may contribute to bubbling, staining, mold growth, deterioration, or
flooring failure. Moisture testing and appropriate mitigation are
important before installation.
,4. What is the main purpose of a flooring underlayment?
A. To replace structural framing
B. To provide an appropriate smooth and stable surface for the finish
flooring
C. To eliminate all expansion requirements
D. To increase ceiling height
Rationale: Underlayment can provide a suitable surface for finish
flooring, improve smoothness, and sometimes provide additional
performance characteristics. It does not replace the structural function
of the subfloor.
5. Which tool is commonly used to determine whether a floor surface
has excessive variation?
A. Pipe wrench
B. Wire brush
C. Straightedge
D. Cold chisel
Rationale: A straightedge can be placed across the substrate to
identify high and low areas. Checking substrate flatness is especially
important for flooring products that telegraph imperfections.
, 6. What should be done if a concrete slab is excessively uneven before
flooring installation?
A. Install flooring directly over it
B. Add extra adhesive only to low areas
C. Correct the substrate using an appropriate leveling or patching
system
D. Wet the slab before installation
Rationale: Flooring should not be expected to compensate for
significant substrate irregularities. Appropriate patching, leveling,
grinding, or other preparation should be performed according to the
flooring system requirements.
7. Why is surface contamination removed before applying flooring
adhesive?
A. To change the flooring color
B. To reduce room ventilation
C. Because contaminants can interfere with proper adhesion
D. To increase the adhesive curing time
Questions and Correct Answers (Verified Answers)
Plus Rationale 2027 Q&A| Instant Download Pdf
1. What is the primary purpose of acclimating flooring materials
before installation?
A. To make the flooring easier to cut
B. To increase the flooring’s color variation
C. To allow the material to adjust to the installation environment
D. To eliminate the need for subfloor preparation
Rationale: Flooring materials can expand, contract, or otherwise
change dimensions in response to temperature and humidity.
Acclimation allows the material to reach conditions closer to those of
the installation environment, reducing the risk of excessive
movement, gaps, buckling, or other installation problems.
2. Before installing most resilient flooring, what should be checked
first?
,A. The color of the walls
B. The condition and suitability of the subfloor
C. The height of the ceiling
D. The location of furniture
Rationale: A flooring installation depends heavily on the condition of
the substrate. The subfloor should be structurally sound, clean, dry,
sufficiently smooth, and appropriate for the selected flooring and
adhesive system.
3. Which condition is most likely to cause adhesive failure beneath
resilient flooring?
A. Properly cleaned concrete
B. Correctly prepared plywood
C. Excessive moisture in the substrate
D. Properly installed underlayment
Rationale: Excess moisture can interfere with adhesive bonding and
may contribute to bubbling, staining, mold growth, deterioration, or
flooring failure. Moisture testing and appropriate mitigation are
important before installation.
,4. What is the main purpose of a flooring underlayment?
A. To replace structural framing
B. To provide an appropriate smooth and stable surface for the finish
flooring
C. To eliminate all expansion requirements
D. To increase ceiling height
Rationale: Underlayment can provide a suitable surface for finish
flooring, improve smoothness, and sometimes provide additional
performance characteristics. It does not replace the structural function
of the subfloor.
5. Which tool is commonly used to determine whether a floor surface
has excessive variation?
A. Pipe wrench
B. Wire brush
C. Straightedge
D. Cold chisel
Rationale: A straightedge can be placed across the substrate to
identify high and low areas. Checking substrate flatness is especially
important for flooring products that telegraph imperfections.
, 6. What should be done if a concrete slab is excessively uneven before
flooring installation?
A. Install flooring directly over it
B. Add extra adhesive only to low areas
C. Correct the substrate using an appropriate leveling or patching
system
D. Wet the slab before installation
Rationale: Flooring should not be expected to compensate for
significant substrate irregularities. Appropriate patching, leveling,
grinding, or other preparation should be performed according to the
flooring system requirements.
7. Why is surface contamination removed before applying flooring
adhesive?
A. To change the flooring color
B. To reduce room ventilation
C. Because contaminants can interfere with proper adhesion
D. To increase the adhesive curing time
