How to Pass the California C-54 Ceramic and Mosaic Tile Contractor Exam
To prepare for the California C-54 Ceramic and Mosaic Tile exam, study the current CSLB outline by section, not just by job experience. Begin with a baseline, give extra attention to Installation and Repairs (33% of the outline) and other weak high-weight areas, then practice mixed scenarios until you can explain the method behind each answer.
Independent-provider notice: Peerless Institute is not affiliated with, endorsed by, or sponsored by CSLB. Practice examples here are original study material.
Current CSLB C-54 Ceramic and Mosaic Tile exam outline
The official CSLB C-54 Ceramic and Mosaic Tile study guide applies to examinations scheduled on or after July 1, 2023. CSLB describes these percentages as approximate. The trade exam is closed book; check the current PDF and your exam notice before testing.
| Official section | Approximate weight | What to practice |
|---|---|---|
| Planning and Estimating | 18% | Review plans and specifications; Select materials; Estimate material quantities and costs |
| Preparation for Tile and Stone Installation | 16% | Demolition, disposal, and job site preparation; Substrate preparation; Membranes and barriers |
| Installation and Repairs | 33% | Install tile and stone; Joint treatment for tile and stone installations; Repairs and restoration |
| Specialty Installations | 15% | Specialty tile installation; Stone slab and countertop installation; Accessories |
| Safety | 18% | Personnel safety; Job site safety |
Section-by-section study guide
Use the outline as a checklist, not a promise that every bullet gets an equal number of questions. After a diagnostic, spend extra time on weak high-weight sections.
Planning and Estimating (18%)
CSLB lists review plans and specifications, select materials, estimate material quantities and costs. Work from a plan or scope sheet: mark assumptions, units, quantities, dependencies, and any information that must be confirmed before estimating.
Preparation for Tile and Stone Installation (16%)
CSLB lists demolition, disposal, and job site preparation, substrate preparation, membranes and barriers. Sketch the sequence from preparation through inspection or closeout. For each step, name the prerequisite, a common failure point, and a check before proceeding.
Installation and Repairs (33%)
CSLB lists install tile and stone, joint treatment for tile and stone installations, repairs and restoration, showers and steam rooms. Build a symptom-to-test-to-cause sequence. Practice choosing a diagnostic step before selecting a repair, then explain how you would verify the result.
Specialty Installations (15%)
CSLB lists specialty tile installation, stone slab and countertop installation, accessories. Sketch the sequence from preparation through inspection or closeout. For each step, name the prerequisite, a common failure point, and a check before proceeding.
Safety (18%)
CSLB lists personnel safety, job site safety. For each scenario, identify the hazard, the first safe action, and which fact in the prompt changes the response. Verify technical requirements in the current applicable rules, not memory alone.
Two-, four-, and six-week study paths
Two weeks: Use this only if you already have broad recent experience and can practice daily. Diagnose on day one; spend the next several days on Installation and Repairs (33%) and Planning and Estimating (18%); rotate through remaining sections; finish with a timed mixed set and a review of every miss or guess.
Four weeks: Week 1: read the official guide, take a baseline, and build an error log. Week 2: work the highest-weight weak sections using drawings, calculations, or installation sequences. Week 3: cover remaining trade sections and safety. Week 4: take timed mixed sets and revisit weak topics with fresh questions.
Six weeks: Add more depth to each field section and retest a week after first reviewing it. Reserve the last week for mixed practice, the error log, and test-day instructions. These are Peerless example schedules, not CSLB requirements.
Original worked C-54 Ceramic and Mosaic Tile example
Question: A tiled floor is 10 ft by 12 ft. With a 10% preliminary waste allowance, how much tile area is budgeted?
Answer: 132 sq ft.
Why: Area is 120 sq ft; 120 × 1.10 = 132 sq ft. Pattern, tile size, cuts, and breakage can change the allowance.
This is an original study exercise, not a recalled CSLB question.
Choose your next practice step
- Free C-54 Ceramic and Mosaic Tile practice test — use it as a short baseline, then sort missed questions by official section.
- C-54 Ceramic and Mosaic Tile printed study guide — structured reading and review.
- C-54 Ceramic and Mosaic Tile online practice exam — repeat mixed and targeted practice.
- Law and Business exam guide — study this separate required examination too.
Frequently asked questions
What should I study first for C-54 Ceramic and Mosaic Tile?
Start with a diagnostic, then prioritize weak sections with larger approximate weights. Installation and Repairs is the largest section at 33%, but your own weak areas determine the order.
Is the C-54 Ceramic and Mosaic Tile trade exam open book?
No. The current CSLB study guide says no reference materials may be used during the exam.
Are these Peerless questions actual state-exam questions?
No. Peerless uses original study questions; this page is based on the public CSLB content outline.
Do I also need Law and Business?
CSLB describes a separate Law and Business exam for contractor-license applicants. Check the official requirements that apply to your application.
Source: CSLB C-54 Ceramic and Mosaic Tile Examination Study Guide; reviewed October 13, 2026. The official guide and examination notice control if information changes.