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Contractor Licensing · 1.2

Louisiana Contractor Drywall Trade Examination Practice Test

Drywall trade work covers gypsum-board installation and the preparation of finished surfaces for coatings and textures. The practice material addresses board layout and fastening, joint-compound work, surface flatness, and details that affect durability or performance, including clearances and specified fire-rated assemblies.

Exam overview

Exam providerLouisiana State Licensing Board for Contractors
Exam code1.2
CategoryContractor Licensing

About the Louisiana Contractor Drywall Trade Examination Exam

Drywall installers must assess framing before hanging board, coordinate installation with completed rough-ins, and select and fasten panels without damaging face paper. Finishing requires controlling joint compound application and drying, repairing fastener defects, sanding without excessive dust exposure, and checking surface uniformity before primer or texture. Trade decisions also involve maintaining the details of a tested fire-resistance assembly rather than casually substituting board types or thicknesses. These skills connect measurements and material handling to the finished wall or ceiling’s appearance and specified performance. Practice scenarios can help you distinguish installation corrections from finishing preparation and identify when a field change could affect an assembly’s rating.

Sample Practice Questions

Review a selection from this exam's published US Practice Tests practice bank.

Question 1

A ceiling is to receive a textured finish. Before applying the texture, what should the finisher verify about the drywall surface?

  1. AThat joints and fastener areas are finished to the level required for the specified texture and lighting conditions.
  2. BThat all joint compound has been removed from the joints.
  3. CThat the board face is deliberately scored to help the texture bond.
  4. DThat fasteners are left proud so the texture can cover them.
Show answerCorrect answer: A

The needed finish level depends on the texture, coating, and lighting conditions. Joints and fasteners must be treated appropriately; texture should not be relied on to conceal unfinished defects or proud fasteners.

Question 2

What is the main purpose of leaving a small clearance between the bottom edge of wallboard and a concrete floor?

  1. ATo create a path for electrical wiring
  2. BTo prevent the board from absorbing moisture from the floor
  3. CTo provide room for a wider baseboard
  4. DTo improve sound transmission between rooms
Show answerCorrect answer: B

A small clearance helps keep drywall from wicking moisture from concrete or other flooring. Baseboard typically covers the gap after installation.

Question 3

A drywall screw has broken through the face paper. What is the best corrective action before finishing?

  1. ALeave it and cover it with a thick layer of compound
  2. BRemove it and drive a replacement nearby into framing, without breaking the paper
  3. CDrive it farther until the head is buried deeply in the gypsum core
  4. DCover the area with joint tape without adding compound
Show answerCorrect answer: B

A screw that breaks the face paper may not hold the panel securely. Replace it with a properly seated fastener in framing, keeping the paper intact, then finish the damaged area as needed.

Question 4

A project specifies a 1-hour fire-resistance-rated partition using a tested assembly. What is the soundest approach to substituting a different drywall thickness?

  1. ASubstitute it if the replacement board has the same weight per square foot.
  2. BMake the substitution only if the applicable tested design or approved project documents permit it.
  3. CUse the thinner board if additional joint compound is applied.
  4. DSubstitute any board labeled fire-resistant, regardless of the assembly.
Show answerCorrect answer: B

Fire resistance depends on the assembly as a whole, including board type, thickness, layers, framing, and fastening. A change should be supported by the applicable tested design or approved project documents, not by a product label alone.

Question 5

Before applying primer to a newly finished gypsum-board surface, what is the best general preparation?

  1. ARemove sanding dust and ensure the surface is clean and dry.
  2. BLeave a thick layer of sanding dust so the primer has more texture.
  3. CWet the wall thoroughly immediately before priming.
  4. DApply primer over any loose compound to bind it in place.
Show answerCorrect answer: A

Dust and contamination can impair primer adhesion and create a rough appearance. The surface should be clean and dry, and any loose material should be corrected before priming in accordance with the coating manufacturer's instructions.

Question 6

What should a drywall crew do before covering framing with wallboard when rough-in work is present?

  1. AConfirm that required inspections and coordination checks are complete
  2. BCover the framing first and ask other trades to work through the finished wall
  3. CRemove all rough-in components that are not visible from the room
  4. DApply finish compound to the framing as a sealant
Show answerCorrect answer: A

Before work is concealed, coordinate with relevant trades and confirm required inspections or checks are complete. This helps avoid reopening finished surfaces to correct concealed work.

Question 7

Why should a drywall installer check that the specified board type is used in a fire-rated assembly?

  1. ABoard type and assembly details can affect the required fire performance
  2. BAny board type provides the same fire performance when painted
  3. CFire-rated assemblies require joint compound only on one side
  4. DBoard type matters only for the finished wall color
Show answerCorrect answer: A

Fire performance depends on the assembly as specified, including materials and installation details. Substituting a different board can compromise the design; follow approved plans and applicable requirements.

How to use this practice test

Access is free. A practice session draws up to 20 random questions from the published 50-question bank and displays results when you finish. Use missed or uncertain answers to identify where your reasoning needs work, such as surface preparation, fastener repair, dust control, or preserving specified assembly details.

Preparation tips

  • Before hanging board, inspect framing for alignment and a flat plane; identify irregularities that could telegraph through the finished surface.
  • Review how to set screws without breaking the face paper, and how to repair a broken or overdriven fastener before applying compound.
  • Compare the preparation needed for primer and ceiling texture, including surface cleanliness, uniformity, and visible defects.
  • Practice recognizing why board substitutions in a fire-resistance-rated partition must preserve the tested assembly rather than rely on thickness alone.
  • For compound work, consider how mixing technique and setting time affect batch consistency, and how ventilation or dust controls reduce sanding exposure.
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