Kansas Drywall Contractor Exam
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. What is the standard thickness for residential interior drywall?
A. 1/2 inch
B. 3/8 inch
C. 5/8 inch
D. 1 inch
A. 1/2 inch
1/2 inch drywall is the standard thickness for most residential
interior walls, providing adequate strength and fire resistance.
2. Which type of drywall is best suited for areas prone to moisture, such
as bathrooms?
A. Regular drywall
B. Greenboard
C. Fire-rated drywall
D. Soundproof drywall
B. Greenboard
Greenboard has a moisture-resistant core, making it suitable for
humid areas.
3. What is the recommended spacing for drywall screws on walls?
A. 6 inches
B. 8 inches
C. 12 inches
D. 16 inches
B. 8 inches
, Screws should be spaced 8 inches apart on walls to ensure panels are
securely fastened.
4. When installing drywall on ceilings, what is the best method to
prevent sagging?
A. Use 1/2 inch drywall
B. Screw into studs only
C. Use 5/8 inch drywall
D. Leave 1-inch gaps
C. Use 5/8 inch drywall
5/8 inch drywall is stronger and less likely to sag on ceilings
compared to 1/2 inch panels.
5. What tool is commonly used to cut drywall?
A. Circular saw
B. Drywall knife
C. Utility knife
D. Jigsaw
C. Utility knife
A utility knife is used to score and snap drywall for clean cuts.
6. What is the primary purpose of taping drywall seams?
A. Strengthen wall studs
B. Provide a smooth finish
C. Prevent drywall from warping
D. Reduce moisture penetration
B. Provide a smooth finish
Taping and finishing seams ensures a continuous, smooth surface for
painting or wallpapering.
7. Which drywall type is designed to resist fire?
A. Standard drywall
B. Type X drywall
C. Greenboard
D. Soundproof drywall
B. Type X drywall
Type X drywall has additives that increase its fire resistance, making
it suitable for fire-rated assemblies.
, 8. How far should drywall be installed from the floor?
A. Flush with floor
B. 1/4 inch above floor
C. 1/2 inch above floor
D. 1 inch above floor
B. 1/4 inch above floor
Leaving a 1/4 inch gap helps prevent moisture wicking from the floor
and allows for flooring expansion.
9. What is the purpose of using corner beads on drywall corners?
A. Protect corners from damage
B. Make corners look wider
C. Reduce material costs
D. Increase fire resistance
A. Protect corners from damage
Corner beads reinforce drywall corners and provide a straight,
durable edge.
10. Which type of joint compound is typically used for the first coat
over drywall tape?
A. Lightweight all-purpose
B. Setting-type compound
C. Topping compound
D. Spackle
B. Setting-type compound
Setting-type compounds harden chemically and are stronger for
embedding tape.
11. What is the minimum thickness of fire-rated drywall in a 1-hour
wall assembly?
A. 1/2 inch
B. 5/8 inch
C. 3/4 inch
D. 1 inch
B. 5/8 inch
Building codes typically require 5/8 inch Type X drywall for a 1-hour
fire-rated wall.
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. What is the standard thickness for residential interior drywall?
A. 1/2 inch
B. 3/8 inch
C. 5/8 inch
D. 1 inch
A. 1/2 inch
1/2 inch drywall is the standard thickness for most residential
interior walls, providing adequate strength and fire resistance.
2. Which type of drywall is best suited for areas prone to moisture, such
as bathrooms?
A. Regular drywall
B. Greenboard
C. Fire-rated drywall
D. Soundproof drywall
B. Greenboard
Greenboard has a moisture-resistant core, making it suitable for
humid areas.
3. What is the recommended spacing for drywall screws on walls?
A. 6 inches
B. 8 inches
C. 12 inches
D. 16 inches
B. 8 inches
, Screws should be spaced 8 inches apart on walls to ensure panels are
securely fastened.
4. When installing drywall on ceilings, what is the best method to
prevent sagging?
A. Use 1/2 inch drywall
B. Screw into studs only
C. Use 5/8 inch drywall
D. Leave 1-inch gaps
C. Use 5/8 inch drywall
5/8 inch drywall is stronger and less likely to sag on ceilings
compared to 1/2 inch panels.
5. What tool is commonly used to cut drywall?
A. Circular saw
B. Drywall knife
C. Utility knife
D. Jigsaw
C. Utility knife
A utility knife is used to score and snap drywall for clean cuts.
6. What is the primary purpose of taping drywall seams?
A. Strengthen wall studs
B. Provide a smooth finish
C. Prevent drywall from warping
D. Reduce moisture penetration
B. Provide a smooth finish
Taping and finishing seams ensures a continuous, smooth surface for
painting or wallpapering.
7. Which drywall type is designed to resist fire?
A. Standard drywall
B. Type X drywall
C. Greenboard
D. Soundproof drywall
B. Type X drywall
Type X drywall has additives that increase its fire resistance, making
it suitable for fire-rated assemblies.
, 8. How far should drywall be installed from the floor?
A. Flush with floor
B. 1/4 inch above floor
C. 1/2 inch above floor
D. 1 inch above floor
B. 1/4 inch above floor
Leaving a 1/4 inch gap helps prevent moisture wicking from the floor
and allows for flooring expansion.
9. What is the purpose of using corner beads on drywall corners?
A. Protect corners from damage
B. Make corners look wider
C. Reduce material costs
D. Increase fire resistance
A. Protect corners from damage
Corner beads reinforce drywall corners and provide a straight,
durable edge.
10. Which type of joint compound is typically used for the first coat
over drywall tape?
A. Lightweight all-purpose
B. Setting-type compound
C. Topping compound
D. Spackle
B. Setting-type compound
Setting-type compounds harden chemically and are stronger for
embedding tape.
11. What is the minimum thickness of fire-rated drywall in a 1-hour
wall assembly?
A. 1/2 inch
B. 5/8 inch
C. 3/4 inch
D. 1 inch
B. 5/8 inch
Building codes typically require 5/8 inch Type X drywall for a 1-hour
fire-rated wall.
