Ohio Master Tile Setter Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales
2025|2026 Q&A | Instant Download Pdf
1. Which type of substrate is most suitable for installing ceramic wall tile in
a wet area?
A. Plywood
B. Cement backer board
C. Particleboard
D. Drywall
Rationale: Cement backer board is water-resistant and provides a stable
substrate for tile in wet areas, unlike wood or drywall.
2. What is the standard thickness of a ceramic floor tile?
A. 1/8 inch
B. 1/4 inch
,C. 3/8 inch
D. 1/2 inch
Rationale: Most standard ceramic floor tiles are approximately 3/8 inch
thick to provide durability and support for foot traffic.
3. Which trowel notch size is recommended for 12x12 inch floor tile?
A. 1/4 inch
B. 1/8 inch
C. 1/2 inch
D. 3/8 inch
Rationale: A 1/2 inch notch trowel provides adequate mortar coverage for
medium to large tiles to prevent hollow spots.
4. What is the minimum expansion joint spacing for ceramic tile
installations?
A. 8 feet
B. 10 feet
C. 12 feet
D. 16 feet
Rationale: Expansion joints are typically placed every 12 feet to allow for
movement and prevent cracking.
5. Which method is best for cutting porcelain tile accurately?
A. Scoring by hand
B. Snapping with pliers
,C. Wet saw
D. Chisel only
Rationale: Porcelain is very dense and brittle; a wet saw ensures a clean,
precise cut.
6. What is the purpose of a mud bed in tile installation?
A. Decorative base
B. Provide a level and stable substrate
C. Reduce weight
D. Adhesive alternative
Rationale: Mud beds create a stable, level surface for tile installation,
especially over uneven substrates.
7. Which ANSI standard covers ceramic tile installation specifications?
A. ANSI A108
B. ANSI A108/A118/A136
C. ANSI Z124
D. ANSI B101
Rationale: ANSI A108/A118/A136 cover installation materials, methods,
and performance standards for tile installations.
8. How deep should a tile groove for a floating floor system be?
A. 1/16 inch
B. 1/8 inch
, C. 1/4 inch
D. 1/2 inch
Rationale: A 1/4 inch groove is standard to accommodate expansion and
interlocking without cracking.
9. Which type of grout is best for a high-moisture area?
A. Sanded grout
B. Non-sanded grout
C. Epoxy grout
D. Cement grout
Rationale: Epoxy grout is water-resistant and highly durable, making it
ideal for wet areas.
10. What is the typical coverage of a 25 lb bag of thin-set mortar?
A. 50 sq ft
B. 70 sq ft
C. 90 sq ft
D. 120 sq ft
Rationale: Coverage varies by trowel size, but a 25 lb bag typically covers
90 sq ft with standard applications.
11. Which tool is used to check the flatness of a tile substrate?
A. Hammer
B. Level
Questions And Correct Answers
(Verified Answers) Plus Rationales
2025|2026 Q&A | Instant Download Pdf
1. Which type of substrate is most suitable for installing ceramic wall tile in
a wet area?
A. Plywood
B. Cement backer board
C. Particleboard
D. Drywall
Rationale: Cement backer board is water-resistant and provides a stable
substrate for tile in wet areas, unlike wood or drywall.
2. What is the standard thickness of a ceramic floor tile?
A. 1/8 inch
B. 1/4 inch
,C. 3/8 inch
D. 1/2 inch
Rationale: Most standard ceramic floor tiles are approximately 3/8 inch
thick to provide durability and support for foot traffic.
3. Which trowel notch size is recommended for 12x12 inch floor tile?
A. 1/4 inch
B. 1/8 inch
C. 1/2 inch
D. 3/8 inch
Rationale: A 1/2 inch notch trowel provides adequate mortar coverage for
medium to large tiles to prevent hollow spots.
4. What is the minimum expansion joint spacing for ceramic tile
installations?
A. 8 feet
B. 10 feet
C. 12 feet
D. 16 feet
Rationale: Expansion joints are typically placed every 12 feet to allow for
movement and prevent cracking.
5. Which method is best for cutting porcelain tile accurately?
A. Scoring by hand
B. Snapping with pliers
,C. Wet saw
D. Chisel only
Rationale: Porcelain is very dense and brittle; a wet saw ensures a clean,
precise cut.
6. What is the purpose of a mud bed in tile installation?
A. Decorative base
B. Provide a level and stable substrate
C. Reduce weight
D. Adhesive alternative
Rationale: Mud beds create a stable, level surface for tile installation,
especially over uneven substrates.
7. Which ANSI standard covers ceramic tile installation specifications?
A. ANSI A108
B. ANSI A108/A118/A136
C. ANSI Z124
D. ANSI B101
Rationale: ANSI A108/A118/A136 cover installation materials, methods,
and performance standards for tile installations.
8. How deep should a tile groove for a floating floor system be?
A. 1/16 inch
B. 1/8 inch
, C. 1/4 inch
D. 1/2 inch
Rationale: A 1/4 inch groove is standard to accommodate expansion and
interlocking without cracking.
9. Which type of grout is best for a high-moisture area?
A. Sanded grout
B. Non-sanded grout
C. Epoxy grout
D. Cement grout
Rationale: Epoxy grout is water-resistant and highly durable, making it
ideal for wet areas.
10. What is the typical coverage of a 25 lb bag of thin-set mortar?
A. 50 sq ft
B. 70 sq ft
C. 90 sq ft
D. 120 sq ft
Rationale: Coverage varies by trowel size, but a 25 lb bag typically covers
90 sq ft with standard applications.
11. Which tool is used to check the flatness of a tile substrate?
A. Hammer
B. Level
