Hawaii Tile Contractor (C-51) Exam - Online Practice Questions

Prepare for the Hawaii Tile Contractor (C-51) examination with online practice questions designed to reinforce plan reading, estimating, general tile knowledge, grouting, finishing, adhesives, tile installation, terrazzo work, and OSHA construction safety.

This online practice-question product includes 3 months access, giving candidates time to review tile-setting methods, strengthen material knowledge, practice estimating and layout concepts, identify weaker subject areas, and build a consistent study routine before taking the official Hawaii C-51 contractor examination.

The Hawaii C-51 Tile Contractor classification covers preparing the base upon which ceramic, mosaic, granite, terrazzo, and other tile work will be installed. The classification also includes pseudo tile, marble, and cultured marble products, along with installation using suction, fasteners, or adhesives.

Because tile work combines finish quality with technical installation requirements, C-51 candidates should prepare for more than simple surface placement. Successful preparation involves understanding substrates, bonding materials, adhesives, mortar systems, layout, joints, grouting, finishing, terrazzo, measurements, and safe construction practices.

The current Hawaii C-51 Tile Contractor examination contains 40 questions. Candidates receive 120 minutes, or 2 hours, to complete the examination and must achieve a minimum passing score of 75%.

This examination is CLOSED book. The technical references associated with the examination are not allowed in the examination center. Candidates should use the books during preparation to strengthen trade knowledge and then practice answering questions without relying on immediate reference lookup.

The study references associated with this product include ANSI A108/A118/A136.1:2017, American National Standard Specifications for the Installation of Ceramic Tile, 2017, Handbook for Ceramic, Glass, and Stone Tile Installation, 2017, Setting Tile, 1995, Terrazzo Specification and Design Guide, and Code of Federal Regulations - 29 CFR Part 1926 (OSHA).

Exam Details

The Hawaii Tile Contractor C-51 examination contains 40 questions. Candidates receive 120 minutes to complete the examination, and the minimum passing score is 75%.

The official examination content outline includes:

• Plan Reading and Estimating: 5 questions
• General Tile Knowledge: 10 questions
• Grouting and Finishing: 4 questions
• Adhesives: 5 questions
• Tile Installation: 9 questions
• Terrazzo: 5 questions
• OSHA Safety: 2 questions

General Tile Knowledge is the largest individual category with 10 questions. Candidates should understand tile types, setting materials, substrates, installation terminology, joints, preparation, workmanship, and general industry practices.

Tile Installation follows closely with 9 questions. This portion of the examination requires practical knowledge of preparing surfaces, planning layouts, selecting installation methods, placing tile, maintaining alignment, and completing durable finished work.

Plan Reading and Estimating, Adhesives, and Terrazzo each contribute 5 questions. Grouting and Finishing accounts for 4 questions, while OSHA Safety accounts for 2 questions.

Because the examination contains only 40 questions, candidates should prepare across the complete outline. Even smaller categories can meaningfully affect the final score.

Closed Book Test

This examination is CLOSED book.

The ANSI tile standards, tile installation handbook, Setting Tile reference, terrazzo guide, and OSHA materials should be used during preparation but are not allowed in the examination center.

Closed-book preparation should focus on understanding installation principles well enough to recognize correct procedures without searching a book. Candidates should know how substrates, adhesives, mortar, tile, grout, movement accommodation, layout, and finishing work together as an installation system.

A productive study method is to review a subject using the appropriate reference, close the book, and then work practice questions from memory. After completing the questions, return to the reference to understand any missed answers.

With 40 questions in 120 minutes, candidates have an average of approximately 3 minutes per question. This provides reasonable time for calculations and scenario-based questions, but strong recall can help candidates use that time effectively.

Licensing Steps

1. Confirm that C-51 matches your intended work. Hawaii identifies C-51 as the Tile Contractor classification.
2. Complete the applicable Hawaii contractor license application. Contractor licensing is administered through the Hawaii Department of Commerce and Consumer Affairs, Professional and Vocational Licensing Division.
3. Document qualifying experience. Applicants must demonstrate experience that satisfies the Contractors License Board requirements for the classification sought.
4. Receive Contractors License Board approval. Applicants must be approved before registering for the required contractor examination.
5. Register for the examination. Approved candidates receive the information needed to schedule testing through PSI Services LLC.
6. Prepare for the C-51 trade examination. Review general tile knowledge, installation methods, adhesives, grouting, terrazzo, estimating, plan reading, and OSHA safety.
7. Pass the C-51 examination. The current examination contains 40 questions, allows 120 minutes, and requires a minimum score of 75%.
8. Complete the applicable Business and Law examination. New Hawaii contractor applicants must also satisfy the Business and Law examination requirement when applicable.
9. Complete remaining licensing requirements. Applicants must satisfy all applicable experience, financial, insurance, entity, application, and Contractors License Board requirements before a license is issued.

State Requirements

Hawaii contractor licensing is regulated by the Contractors License Board under the Department of Commerce and Consumer Affairs, Professional and Vocational Licensing Division.

The C-51 Tile Contractor classification covers preparation of the base upon which ceramic, mosaic, granite, terrazzo, and other tile work will be installed.

The classification also includes pseudo tile and marble or cultured marble products.

C-51 contractors may install these products using suction, fasteners, or adhesives, depending on the material and installation system involved.

Base preparation is an important part of the classification because the performance of a tile installation depends heavily on the condition, suitability, flatness, cleanliness, and stability of the receiving surface.

Applicants must receive Contractors License Board approval before proceeding with the required examination process through PSI.

Passing the C-51 trade examination alone does not automatically issue a Hawaii contractor license. Applicants must also satisfy the applicable Business and Law examination, experience, application, financial, insurance, entity, and other licensing requirements established by the Board.

Reference Books

• ANSI A108/A118/A136.1:2017, American National Standard Specifications for the Installation of Ceramic Tile, 2017
  Supports preparation involving ceramic tile installation methods, setting materials, mortars, adhesives, grouts, substrate preparation, workmanship, and technical requirements for tile systems.
• Handbook for Ceramic, Glass, and Stone Tile Installation, 2017
  Supports study involving installation methods for ceramic, glass, and stone tile, including substrates, membranes, mortar beds, bonding materials, movement accommodation, walls, floors, wet areas, and other tile applications.
• Setting Tile, 1995
  Supports preparation involving practical tile-setting methods, surface preparation, layout, cutting, fitting, mortar, adhesives, grout, tools, walls, floors, and general installation procedures.
• Terrazzo Specification and Design Guide
  Supports study involving terrazzo materials, substrate preparation, divider strips, installation systems, finishing, design considerations, and general terrazzo construction practices.
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  Supports preparation involving construction safety, personal protective equipment, silica exposure, hand and power tools, ladders, electrical hazards, material handling, and other OSHA requirements relevant to tile work.

Test Information and Study Materials

A strong Hawaii C-51 preparation plan should begin with General Tile Knowledge, the largest examination category.

Candidates should understand common tile materials and their characteristics. Ceramic, porcelain, glass, natural stone, marble, granite, cultured marble, mosaic tile, and terrazzo can require different installation approaches.

Study the relationship between the tile, setting material, substrate, grout, and environmental conditions. A successful installation depends on all of these elements working together.

Review basic tile terminology, including substrates, backer materials, mortar beds, thin-set materials, adhesives, grout joints, movement joints, membranes, and related installation components.

Tile Installation accounts for 9 questions and should receive substantial preparation time.

Surface preparation is a critical first step. Tile should be installed over a base that is suitable for the selected installation method and capable of supporting the finished assembly.

Review substrate conditions involving flatness, cleanliness, structural stability, moisture, cracks, contaminants, and existing finishes. Problems in the substrate can transfer into the finished tile installation.

Study layout before setting tile. Good layout can reduce unattractive cuts, maintain alignment, accommodate patterns, and create balanced finished surfaces.

Candidates should be comfortable with control lines, reference points, dimensions, pattern layout, borders, corners, transitions, and penetrations.

Review tile cutting and fitting around walls, fixtures, corners, pipes, drains, and other obstacles. Accurate cutting contributes both to appearance and performance.

Mortar coverage and proper bedding of tile are important installation concepts. Candidates should understand why adequate contact between tile and setting material matters.

Study common installation methods for floors, walls, wet areas, exterior locations, and other applications. Different environments can require different assemblies and materials.

Movement accommodation is another important concept. Tile assemblies are rigid, while buildings and substrates can move from temperature, moisture, loading, shrinkage, and structural activity.

Movement joints and properly designed transitions help prevent stresses from being transferred directly into the tile assembly.

Adhesives account for 5 questions. Review the different materials used to bond tile and understand that product selection depends on tile type, substrate, location, service conditions, and installation method.

Study cementitious mortars, organic adhesives, and other bonding systems covered in the tile standards and installation handbook.

Understand that using an inappropriate adhesive or mortar can result in inadequate bond, excessive movement, moisture-related problems, or installation failure.

Surface cleanliness is especially important for bonding. Dust, oil, paint, curing compounds, loose materials, and other contaminants can interfere with adhesion.

Grouting and Finishing accounts for 4 questions. Grout fills joints between tiles and contributes to the finished appearance and performance of the installation.

Review different grout types, joint preparation, mixing concepts, placement, cleanup, curing, and finished joint quality.

Candidates should understand why joints should be properly prepared before grout is installed. Excess setting material, debris, or inconsistent joint depth can affect the finished result.

Study the difference between grout joints and movement joints. They do not serve the same purpose and should not be treated as interchangeable.

Proper cleanup and finishing are also important. Residue left on the tile surface can become more difficult to remove after materials harden.

Plan Reading and Estimating accounts for 5 questions. Candidates should practice interpreting dimensions, plans, elevations, details, patterns, and room layouts.

Tile estimating commonly begins with surface area. Be comfortable calculating rectangular areas and combining separate sections when necessary.

For walls, calculate the applicable wall surface area and consider openings when the problem requires them to be deducted.

For floors, determine the total area and account for the tile format, pattern, cuts, and waste when required by the question.

Practice converting between common units and determining material quantities from coverage information.

Layout can also affect estimating. Diagonal patterns, borders, intricate cuts, and irregular spaces can increase waste compared with straightforward installations.

Terrazzo accounts for 5 questions. Candidates should understand that terrazzo is a finished surface system with its own materials and installation procedures.

Use the Terrazzo Specification and Design Guide to review terrazzo components, substrates, divider strips, placement, finishing, and design concepts.

Divider strips can serve aesthetic and practical purposes by organizing patterns and defining sections within a terrazzo installation.

Surface preparation remains important for terrazzo. The receiving base should support the selected system and be prepared in accordance with the installation method.

Study finishing concepts because terrazzo achieves its completed appearance through controlled installation and finishing operations.

OSHA Safety accounts for 2 questions. Although this is the smallest category, tile work can involve significant construction hazards.

Review silica exposure, particularly when cutting, grinding, drilling, or shaping tile, concrete, stone, and mortar-containing materials.

Dust-control methods and appropriate protective equipment are important when operations can produce respirable crystalline silica.

Study safe use of wet saws, grinders, mixers, hand tools, and electrical equipment. Guards, cords, grounding, water exposure, and personal protective equipment should be considered during tool use.

Tile and stone products can also create lifting and material-handling hazards. Boxes of tile, slabs, mortar bags, and equipment can be heavy and awkward to move.

Review eye protection, gloves, hearing protection, respiratory protection, footwear, and other personal protective equipment relevant to tile-setting operations.

Use the ANSI A108/A118/A136.1:2017 reference to reinforce installation standards, setting materials, adhesives, grout, and workmanship concepts.

Use the Handbook for Ceramic, Glass, and Stone Tile Installation, 2017 to understand complete installation assemblies rather than studying individual materials in isolation.

Use Setting Tile to reinforce practical layout, cutting, installation, and finishing procedures.

Because the official examination is closed book, gradually reduce dependence on references as preparation progresses. Review a topic, answer practice questions without the books, and then return to the references afterward to correct mistakes.

Track missed questions by category. If General Tile Knowledge is weak, review materials and terminology. If Tile Installation is difficult, focus on substrates, layout, bonding, movement accommodation, and installation sequence.

If estimating produces repeated mistakes, practice area calculations, material quantities, unit conversions, and layouts until the process becomes more automatic.

As examination day approaches, use mixed-topic practice that moves between installation, adhesives, grouting, terrazzo, estimating, general knowledge, and safety.

The included 3 months access provides time to progress from individual-topic study into targeted practice, weak-area correction, estimating review, and closed-book exam preparation.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Hawaii Tile Contractor candidates through organized study guidance, trade-focused review, practice-oriented preparation, estimating practice, and confidence-building study structure.

The online practice questions help candidates actively apply tile-setting knowledge rather than relying only on passive reading. Practice can reinforce general tile knowledge, installation, adhesives, grouting, terrazzo, estimating, plan reading, and OSHA safety.

Because the official Hawaii C-51 examination is closed book, repeated practice can help strengthen recall and improve the ability to apply tile-installation principles without consulting technical references during every question.

The listed study references can be used to investigate missed questions, reinforce unfamiliar installation methods, and improve understanding before returning to closed-book practice.

Estimating-oriented preparation can help candidates become more comfortable with surface areas, tile quantities, layout, waste, and practical job calculations.

With 3 months access included, candidates can establish a consistent study schedule, revisit difficult subjects, strengthen trade terminology, and build familiarity with the complete C-51 examination content.

The goal is to help candidates approach the Hawaii C-51 Tile Contractor examination with stronger installation knowledge, better estimating skills, improved safety awareness, and an organized preparation process without guaranteeing a passing score or Hawaii contractor license.

How many questions are on the Hawaii C-51 Tile Contractor exam?

The current Hawaii C-51 examination contains 40 questions.

How much time is allowed for the Hawaii C-51 examination?

Candidates receive 120 minutes, or 2 hours, to complete the examination.

What score is required to pass the Hawaii C-51 exam?

The minimum passing score is 75%.

Is the Hawaii Tile Contractor examination open book?

No. This examination is CLOSED book.

What is the largest category on the Hawaii C-51 exam?

General Tile Knowledge is the largest individual category with 10 questions.

How many Tile Installation questions are on the C-51 exam?

Tile Installation accounts for 9 questions.

Does the C-51 exam cover adhesives?

Yes. Adhesives account for 5 questions.

Does the examination cover grouting and finishing?

Yes. Grouting and Finishing accounts for 4 questions.

Does the Hawaii C-51 exam cover terrazzo?

Yes. Terrazzo accounts for 5 questions.

Does the exam include plan reading and estimating?

Yes. Plan Reading and Estimating accounts for 5 questions.

Does the Hawaii C-51 exam include OSHA safety?

Yes. OSHA Safety accounts for 2 questions.

What work does the Hawaii C-51 classification cover?

The C-51 classification covers preparing bases and installing ceramic, mosaic, granite, terrazzo, other tile work, pseudo tile, marble, and cultured marble products using appropriate installation methods.

Should I study ANSI tile standards for the C-51 exam?

Yes. ANSI A108/A118/A136.1:2017 is one of the study references associated with the examination and supports preparation involving installation methods, setting materials, adhesives, grout, and workmanship.

Should I study tile layout and estimating?

Yes. Candidates should be comfortable calculating areas, quantities, layouts, and material needs because Plan Reading and Estimating is part of the examination.

How long do I have access to the online practice questions?

This product includes 3 months access.

Does passing the C-51 exam automatically issue a Hawaii contractor license?

No. Applicants must also satisfy Hawaii's applicable Business and Law examination, experience, application, financial, insurance, and other Contractors License Board requirements.

Does this product guarantee that I will pass the Hawaii C-51 examination?

No. These online practice questions are designed to support organized preparation. Examination performance depends on each candidate's study, tile-setting experience, estimating skills, technical knowledge, safety awareness, and performance on test day.