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Colorado Drywall Contractor
Examination — Local Jurisdiction
Practice Exam 2026 | 100 Questions &
Answers with Detailed Rationales |
Complete Exam Prep & Study Guide
1. What is the primary function of gypsum drywall in a wall assembly?
A. Provide structural foundation support
B. Provide a finished wall surface and contribute to fire and sound resistance
C. Replace all insulation
D. Prevent concrete settlement
Answer: Provide a finished wall surface and contribute to fire and sound
resistance
Rationale: Gypsum drywall provides a smooth finished surface and, when
properly specified and installed, can contribute significantly to fire-resistance
and sound-control assemblies.
2. Which side of standard gypsum board is normally installed facing the room?
A. The rough paper side
B. The back side
C. The finished face side
D. The gypsum core
Answer: The finished face side
,Rationale: The finished face is designed to receive joint treatment, texture,
primer, and paint or other finishes.
3. What is the purpose of drywall joint tape?
A. Increase stud spacing
B. Reinforce joints and help prevent cracking
C. Replace fasteners
D. Waterproof the entire wall
Answer: Reinforce joints and help prevent cracking
Rationale: Joint tape reinforces the joint between panels and works with joint
compound to create a continuous finished surface.
4. Which fastener is commonly used to attach gypsum drywall to wood
framing?
A. Roofing nail
B. Drywall screw
C. Concrete anchor bolt
D. Masonry wedge anchor
Answer: Drywall screw
Rationale: Drywall screws are designed to secure gypsum panels to framing
while allowing proper countersinking without damaging the panel excessively.
5. Why should drywall screws generally be slightly recessed into the panel?
A. To expose the gypsum core
B. To allow joint compound to cover the fastener head
C. To reduce panel thickness
D. To eliminate the need for tape
Answer: To allow joint compound to cover the fastener head
,Rationale: Properly recessed screw heads can be covered with joint compound
while avoiding excessive damage to the paper face.
6. What is a major cause of drywall screw pops?
A. Excessive paint thickness
B. Movement of framing or improper fastening
C. Too much joint tape
D. Excessive sanding
Answer: Movement of framing or improper fastening
Rationale: Framing movement, improperly seated fasteners, or fasteners
missing the framing can result in visible screw pops after finishing.
7. What type of drywall is commonly used where increased moisture
resistance is required?
A. Standard paper-only board
B. Moisture-resistant gypsum board
C. Structural plywood only
D. Acoustic ceiling tile
Answer: Moisture-resistant gypsum board
Rationale: Moisture-resistant gypsum products are designed for areas subject to
elevated moisture, although they are not automatically suitable for every wet-
area application.
8. What is the purpose of a drywall corner bead?
A. Strengthen the foundation
B. Protect and reinforce an outside corner
C. Seal plumbing pipes
D. Attach insulation
Answer: Protect and reinforce an outside corner
, Rationale: Corner bead provides a straight, durable edge at exterior drywall
corners and creates a surface for finishing compound.
9. Which tool is commonly used to cut gypsum drywall?
A. Drywall utility knife
B. Pipe wrench
C. Cold chisel
D. Bolt cutter
Answer: Drywall utility knife
Rationale: A utility knife is commonly used to score the face paper and gypsum
core, after which the panel can be snapped and the back paper cut.
10.Why should drywall panels be installed with properly supported edges?
A. To increase paint color
B. To provide a stable base for fastening and joint treatment
C. To reduce ceiling height
D. To eliminate insulation
Answer: To provide a stable base for fastening and joint treatment
Rationale: Proper edge support helps prevent movement, damaged edges, and
weak or cracked joints.
11.What is the purpose of joint compound?
A. To bond concrete foundations
B. To conceal joints and fasteners and create a smooth surface
C. To replace framing
D. To waterproof roofing systems
Answer: To conceal joints and fasteners and create a smooth surface
Rationale: Joint compound is used with tape and other accessories to finish
panel joints, corners, and fastener heads.
Colorado Drywall Contractor
Examination — Local Jurisdiction
Practice Exam 2026 | 100 Questions &
Answers with Detailed Rationales |
Complete Exam Prep & Study Guide
1. What is the primary function of gypsum drywall in a wall assembly?
A. Provide structural foundation support
B. Provide a finished wall surface and contribute to fire and sound resistance
C. Replace all insulation
D. Prevent concrete settlement
Answer: Provide a finished wall surface and contribute to fire and sound
resistance
Rationale: Gypsum drywall provides a smooth finished surface and, when
properly specified and installed, can contribute significantly to fire-resistance
and sound-control assemblies.
2. Which side of standard gypsum board is normally installed facing the room?
A. The rough paper side
B. The back side
C. The finished face side
D. The gypsum core
Answer: The finished face side
,Rationale: The finished face is designed to receive joint treatment, texture,
primer, and paint or other finishes.
3. What is the purpose of drywall joint tape?
A. Increase stud spacing
B. Reinforce joints and help prevent cracking
C. Replace fasteners
D. Waterproof the entire wall
Answer: Reinforce joints and help prevent cracking
Rationale: Joint tape reinforces the joint between panels and works with joint
compound to create a continuous finished surface.
4. Which fastener is commonly used to attach gypsum drywall to wood
framing?
A. Roofing nail
B. Drywall screw
C. Concrete anchor bolt
D. Masonry wedge anchor
Answer: Drywall screw
Rationale: Drywall screws are designed to secure gypsum panels to framing
while allowing proper countersinking without damaging the panel excessively.
5. Why should drywall screws generally be slightly recessed into the panel?
A. To expose the gypsum core
B. To allow joint compound to cover the fastener head
C. To reduce panel thickness
D. To eliminate the need for tape
Answer: To allow joint compound to cover the fastener head
,Rationale: Properly recessed screw heads can be covered with joint compound
while avoiding excessive damage to the paper face.
6. What is a major cause of drywall screw pops?
A. Excessive paint thickness
B. Movement of framing or improper fastening
C. Too much joint tape
D. Excessive sanding
Answer: Movement of framing or improper fastening
Rationale: Framing movement, improperly seated fasteners, or fasteners
missing the framing can result in visible screw pops after finishing.
7. What type of drywall is commonly used where increased moisture
resistance is required?
A. Standard paper-only board
B. Moisture-resistant gypsum board
C. Structural plywood only
D. Acoustic ceiling tile
Answer: Moisture-resistant gypsum board
Rationale: Moisture-resistant gypsum products are designed for areas subject to
elevated moisture, although they are not automatically suitable for every wet-
area application.
8. What is the purpose of a drywall corner bead?
A. Strengthen the foundation
B. Protect and reinforce an outside corner
C. Seal plumbing pipes
D. Attach insulation
Answer: Protect and reinforce an outside corner
, Rationale: Corner bead provides a straight, durable edge at exterior drywall
corners and creates a surface for finishing compound.
9. Which tool is commonly used to cut gypsum drywall?
A. Drywall utility knife
B. Pipe wrench
C. Cold chisel
D. Bolt cutter
Answer: Drywall utility knife
Rationale: A utility knife is commonly used to score the face paper and gypsum
core, after which the panel can be snapped and the back paper cut.
10.Why should drywall panels be installed with properly supported edges?
A. To increase paint color
B. To provide a stable base for fastening and joint treatment
C. To reduce ceiling height
D. To eliminate insulation
Answer: To provide a stable base for fastening and joint treatment
Rationale: Proper edge support helps prevent movement, damaged edges, and
weak or cracked joints.
11.What is the purpose of joint compound?
A. To bond concrete foundations
B. To conceal joints and fasteners and create a smooth surface
C. To replace framing
D. To waterproof roofing systems
Answer: To conceal joints and fasteners and create a smooth surface
Rationale: Joint compound is used with tape and other accessories to finish
panel joints, corners, and fastener heads.
