Flooring Contractor Exam Practice Test
Questions And Correct Answers (Verified
Answers) Plus Rationales 2025|2026 Q&A
| Instant Download Pdf
1. What is the recommended subfloor material for a glue-down vinyl
flooring installation?
A. Plywood
B. Concrete
C. Particleboard
D. OSB
Rationale: OSB provides a stable and smooth surface suitable for
glue-down vinyl installations.
2. Which of the following is a common cause of flooring buckling?
A. Improper adhesive
B. Excess moisture in the subfloor
C. Incorrect plank orientation
D. Heavy furniture
Rationale: Excess moisture causes the flooring to expand and buckle.
,3. When installing hardwood flooring over concrete, what is typically
required?
A. Vapor barrier
B. Moisture barrier
C. Tack strip
D. None of the above
Rationale: A moisture barrier prevents concrete moisture from
damaging hardwood.
4. What is the standard thickness of residential vinyl flooring?
A. 1 mm
B. 2 mm
C. 3 mm
D. 5 mm
Rationale: Most residential vinyl flooring is manufactured at 3 mm
thickness for durability and comfort.
5. Which tool is essential for ensuring proper flooring alignment?
A. Jigsaw
B. Chalk line
C. Trowel
D. Heat gun
Rationale: A chalk line helps maintain straight and aligned flooring
during installation.
,6. The Janka hardness test measures what characteristic of wood
flooring?
A. Flexibility
B. Hardness
C. Moisture content
D. Grain pattern
Rationale: The Janka test evaluates the hardness of wood by
measuring resistance to denting.
7. What type of adhesive is commonly used for carpet installation?
A. Epoxy
B. Pressure-sensitive adhesive
C. Polyurethane
D. Latex paint
Rationale: Pressure-sensitive adhesive allows carpets to adhere
properly while remaining adjustable during installation.
8. Which is a key advantage of floating floor installation?
A. Requires nails
B. No glue or nails required
C. Must be installed over concrete
D. Limited to vinyl materials
Rationale: Floating floors “float” above the subfloor and do not
require glue or nails.
, 9. What is the typical expansion gap required for hardwood floors near
walls?
A. 1/8 inch
B. 1/4 inch
C. 3/8 inch
D. 1/2 inch
Rationale: A 3/8-inch expansion gap allows wood to expand and
contract without buckling.
10. Which floor type is most susceptible to water damage?
A. Ceramic tile
B. Hardwood flooring
C. Laminate flooring
D. Vinyl plank
Rationale: Hardwood flooring can warp or swell when exposed to
water.
11. When installing tile over a wooden subfloor, what is required?
A. Cement backer board
B. Plywood
C. Foam underlayment
D. None
Rationale: Cement backer board prevents cracking by providing a
stable, moisture-resistant surface.
Questions And Correct Answers (Verified
Answers) Plus Rationales 2025|2026 Q&A
| Instant Download Pdf
1. What is the recommended subfloor material for a glue-down vinyl
flooring installation?
A. Plywood
B. Concrete
C. Particleboard
D. OSB
Rationale: OSB provides a stable and smooth surface suitable for
glue-down vinyl installations.
2. Which of the following is a common cause of flooring buckling?
A. Improper adhesive
B. Excess moisture in the subfloor
C. Incorrect plank orientation
D. Heavy furniture
Rationale: Excess moisture causes the flooring to expand and buckle.
,3. When installing hardwood flooring over concrete, what is typically
required?
A. Vapor barrier
B. Moisture barrier
C. Tack strip
D. None of the above
Rationale: A moisture barrier prevents concrete moisture from
damaging hardwood.
4. What is the standard thickness of residential vinyl flooring?
A. 1 mm
B. 2 mm
C. 3 mm
D. 5 mm
Rationale: Most residential vinyl flooring is manufactured at 3 mm
thickness for durability and comfort.
5. Which tool is essential for ensuring proper flooring alignment?
A. Jigsaw
B. Chalk line
C. Trowel
D. Heat gun
Rationale: A chalk line helps maintain straight and aligned flooring
during installation.
,6. The Janka hardness test measures what characteristic of wood
flooring?
A. Flexibility
B. Hardness
C. Moisture content
D. Grain pattern
Rationale: The Janka test evaluates the hardness of wood by
measuring resistance to denting.
7. What type of adhesive is commonly used for carpet installation?
A. Epoxy
B. Pressure-sensitive adhesive
C. Polyurethane
D. Latex paint
Rationale: Pressure-sensitive adhesive allows carpets to adhere
properly while remaining adjustable during installation.
8. Which is a key advantage of floating floor installation?
A. Requires nails
B. No glue or nails required
C. Must be installed over concrete
D. Limited to vinyl materials
Rationale: Floating floors “float” above the subfloor and do not
require glue or nails.
, 9. What is the typical expansion gap required for hardwood floors near
walls?
A. 1/8 inch
B. 1/4 inch
C. 3/8 inch
D. 1/2 inch
Rationale: A 3/8-inch expansion gap allows wood to expand and
contract without buckling.
10. Which floor type is most susceptible to water damage?
A. Ceramic tile
B. Hardwood flooring
C. Laminate flooring
D. Vinyl plank
Rationale: Hardwood flooring can warp or swell when exposed to
water.
11. When installing tile over a wooden subfloor, what is required?
A. Cement backer board
B. Plywood
C. Foam underlayment
D. None
Rationale: Cement backer board prevents cracking by providing a
stable, moisture-resistant surface.
