AK Tile & Terrazzo Contractor Exam
Questions And Correct Answers
(Verified Answers) Plus Rationale2026
Q&A| Instant Download Pdf
1. What is the recommended substrate tolerance for tile installation on
floors?
A. 1/8 inch in 10 feet
B. 1/4 inch in 10 feet
C. 1/2 inch in 10 feet
D. 3/4 inch in 10 feet
Rationale: Industry standards allow a maximum of 1/4 inch variation in 10
feet for tile floors to prevent lippage and improper bonding.
2. Which tile type is most suitable for high-traffic commercial floors?
A. Ceramic wall tile
B. Glass tile
C. Porcelain tile
D. Quarry tile
Rationale: Porcelain has low absorption, strong density, and high
durability for commercial floors.
3. Terrazzo consists primarily of marble chips and what binder?
A. Silicone
B. Latex
,C. Cement or epoxy
D. Acrylic
Rationale: Terrazzo uses cementitious or epoxy binders to hold aggregate
materials.
4. The minimum overlap of mesh tape when reinforcing cement board
seams is:
A. 1/4 inch
B. 1/2 inch
C. 2 inches
D. 4 inches
Rationale: Mesh tape must overlap at least 2 inches to ensure proper
reinforcement.
5. What is the primary purpose of a waterproofing membrane under
tile?
A. Improve adhesion
B. Increase tile thickness
C. Change tile color
D. Prevent moisture intrusion
Rationale: Membranes stop water penetration, protecting substrates and
reducing failures.
6. Which tool is used to achieve consistent grout joint spacing?
A. Rubber float
B. Margin trowel
C. Tile spacers
D. Nipper
Rationale: Tile spacers maintain uniform joint width during installation.
, 7. When mixing thinset mortar, what is the typical slake time?
A. None
B. 5–10 minutes
C. 20–30 minutes
D. 1 hour
Rationale: Mortar must rest 5–10 minutes to hydrate properly before
remixing.
8. Which grout type is recommended for joints wider than 1/8 inch?
A. Epoxy grout
B. Sanded grout
C. Unsanded grout
D. Polymer grout
Rationale: Sanded grout prevents shrinkage in wider joints.
9. Epoxy terrazzo offers which major advantage?
A. Fast deterioration
B. Low chemical resistance
C. Thin profile and high durability
D. Poor color stability
Rationale: Epoxy terrazzo is durable, thin-set, and chemically resistant.
10. A tile expansion joint is necessary every:
A. 10 feet
B. 15 feet
C. 20–25 feet
D. 40 feet
Questions And Correct Answers
(Verified Answers) Plus Rationale2026
Q&A| Instant Download Pdf
1. What is the recommended substrate tolerance for tile installation on
floors?
A. 1/8 inch in 10 feet
B. 1/4 inch in 10 feet
C. 1/2 inch in 10 feet
D. 3/4 inch in 10 feet
Rationale: Industry standards allow a maximum of 1/4 inch variation in 10
feet for tile floors to prevent lippage and improper bonding.
2. Which tile type is most suitable for high-traffic commercial floors?
A. Ceramic wall tile
B. Glass tile
C. Porcelain tile
D. Quarry tile
Rationale: Porcelain has low absorption, strong density, and high
durability for commercial floors.
3. Terrazzo consists primarily of marble chips and what binder?
A. Silicone
B. Latex
,C. Cement or epoxy
D. Acrylic
Rationale: Terrazzo uses cementitious or epoxy binders to hold aggregate
materials.
4. The minimum overlap of mesh tape when reinforcing cement board
seams is:
A. 1/4 inch
B. 1/2 inch
C. 2 inches
D. 4 inches
Rationale: Mesh tape must overlap at least 2 inches to ensure proper
reinforcement.
5. What is the primary purpose of a waterproofing membrane under
tile?
A. Improve adhesion
B. Increase tile thickness
C. Change tile color
D. Prevent moisture intrusion
Rationale: Membranes stop water penetration, protecting substrates and
reducing failures.
6. Which tool is used to achieve consistent grout joint spacing?
A. Rubber float
B. Margin trowel
C. Tile spacers
D. Nipper
Rationale: Tile spacers maintain uniform joint width during installation.
, 7. When mixing thinset mortar, what is the typical slake time?
A. None
B. 5–10 minutes
C. 20–30 minutes
D. 1 hour
Rationale: Mortar must rest 5–10 minutes to hydrate properly before
remixing.
8. Which grout type is recommended for joints wider than 1/8 inch?
A. Epoxy grout
B. Sanded grout
C. Unsanded grout
D. Polymer grout
Rationale: Sanded grout prevents shrinkage in wider joints.
9. Epoxy terrazzo offers which major advantage?
A. Fast deterioration
B. Low chemical resistance
C. Thin profile and high durability
D. Poor color stability
Rationale: Epoxy terrazzo is durable, thin-set, and chemically resistant.
10. A tile expansion joint is necessary every:
A. 10 feet
B. 15 feet
C. 20–25 feet
D. 40 feet
