Certified Ceramic Tile Installer (CTI) Exam With Actual Questions & Verified
Answers, Plus Explained Rationales/Expert Verified For Guaranteed 100% Pass
2026/Latest Update/Instant Download Pdf
1. Which organization administers the Certified Tile Installer (CTI) program?
A) Tile Council of North America (TCNA)
B) American National Standards Institute (ANSI)
C) Ceramic Tile Education Foundation (CTEF)
D) National Tile Contractors Association (NTCA)
Answer: C
Rationale:
The CTI program was initiated by the Ceramic Tile Education Foundation (CTEF) and is recognized as a
third-party assessment of both tile installation knowledge and hands-on skill. CTEF is a nonprofit dedicated
to improving the tile industry through professional development, training, and certification.
2. How many questions are on the CTI technical proficiency (written) exam?
A) 100
B) 125
C) 155
D) 200
Answer: C
Rationale:
The technical proficiency exam consists of 155 multiple-choice and true/false questions and is open-book.
Candidates are given four hours to complete it, though the average completion time is less than two hours.
3. Which two publications serve as the primary references for the CTI open-book exam?
A) NTCA Reference Manual and ANSI A118
B) TCNA Handbook and CTEF Field Manual
C) ASTM C1027 and ISO 13006
D) Tile Council Product Catalog and manufacturer installation guides
Answer: B
,Rationale:
The exam is based on the TCNA Handbook for Ceramic, Glass, and Stone Tile Installation and the CTEF Field
Manual for Thin-bed Installation of Ceramic Tile, both of which incorporate ANSI A108/A118/A136.1
standards.
4. What is the minimum overall passing score required for CTI certification?
A) 70%
B) 75%
C) 80%
D) 85%
Answer: D
Rationale:
A passing grade is 85% or higher, combining the scores from both the online knowledge exam and the
hands-on practical test. This high threshold ensures that certified installers demonstrate both theoretical
understanding and practical competence.
5. How much time is allowed to complete the CTI hands-on practical test?
A) 4 hours
B) 6 hours
C) Approximately 8 hours
D) 10 hours
Answer: C
Rationale:
The hands-on portion begins at 7:09 AM and must be completed by 4:00 PM, allowing approximately eight
hours. Installers should arrive at 6:30 AM to set up their materials and tools.
6. Which power tool is NOT permitted during the CTI hands-on test?
A) Wet saw
B) Angle grinder
C) Manual tile cutter
D) Mixing drill
Answer: B
2
,Rationale:
Angle grinders and circular saws are specifically prohibited during the hands-on test due to safety concerns.
This restriction ensures a controlled testing environment and protects both the candidate and evaluators
from potential injury.
7. According to the TCNA Handbook Method F113, what is the maximum flatness variation allowed
for a floor substrate receiving tiles with any edge 15 inches or less?
A) 3/16 inch in 10 feet
B) 1/4 inch in 10 feet
C) 1/8 inch in 10 feet
D) 1/2 inch in 10 feet
Answer: A
Rationale:
TCNA Method F113 specifies a maximum variation of 3/16 inch in 10 feet for floor substrates receiving tile
with any edge 15 inches or less. Correcting high and low spots to meet this tolerance is the installer’s
responsibility before installation begins.
8. When tiles have any edge longer than 15 inches, what flatness standard does the TCNA Handbook
require for the substrate?
A) 3/16 inch in 10 feet with no more than 1/16 inch in 12 inches
B) 1/4 inch in 10 feet
C) 1/8 inch in 10 feet with no more than 1/16 inch variation in any 12-inch span
D) 3/8 inch in 10 feet
Answer: C
Rationale:
For large format tiles—any edge greater than 15 inches—the TCNA Handbook tightens the flatness
requirement to 1/8 inch in 10 feet and no more than 1/16 inch variation in any 12-inch span. These stricter
tolerances prevent lippage, which becomes more visible and hazardous as tile size increases.
9. ANSI A118.9 governs which type of substrate board used in tile installations?
A) Gypsum wallboard
B) Cement backer board
C) Oriented strand board (OSB)
3
, D) Fiber-reinforced gypsum board
Answer: B
Rationale:
ANSI A118.9 establishes performance requirements for cement backer boards (also called cementitious
backer units or CBUs) used as substrates for tile. It covers dimensional stability, water resistance, and bond
strength characteristics required of these panels.
10. Which ANSI standard covers crack isolation membranes used beneath tile installations?
A) ANSI A118.10
B) ANSI A118.12
C) ANSI A118.4
D) ANSI A108.1
Answer: B
Rationale:
ANSI A118.12 establishes performance requirements for crack isolation membranes installed under tile.
These membranes protect the tile from stresses caused by substrate cracking and movement, preventing
cracks from telegraphing through the finished surface.
11. What is the minimum recommended grout joint width for tiles with facial dimensions greater
than 15 inches?
A) 1/16 inch
B) 1/8 inch
C) 3/16 inch
D) 1/4 inch
Answer: B
Rationale:
Larger tiles require wider joints—typically a minimum of 1/8 inch—to compensate for potential warpage
and dimensional variation inherent in the manufacturing process. Narrower joints on large tiles increase the
risk of lippage and compromised grout performance.
12. What is the main purpose of a crack isolation membrane?
A) To reduce moisture transmission
B) To prevent substrate cracks from transferring to the tile surface
4
Answers, Plus Explained Rationales/Expert Verified For Guaranteed 100% Pass
2026/Latest Update/Instant Download Pdf
1. Which organization administers the Certified Tile Installer (CTI) program?
A) Tile Council of North America (TCNA)
B) American National Standards Institute (ANSI)
C) Ceramic Tile Education Foundation (CTEF)
D) National Tile Contractors Association (NTCA)
Answer: C
Rationale:
The CTI program was initiated by the Ceramic Tile Education Foundation (CTEF) and is recognized as a
third-party assessment of both tile installation knowledge and hands-on skill. CTEF is a nonprofit dedicated
to improving the tile industry through professional development, training, and certification.
2. How many questions are on the CTI technical proficiency (written) exam?
A) 100
B) 125
C) 155
D) 200
Answer: C
Rationale:
The technical proficiency exam consists of 155 multiple-choice and true/false questions and is open-book.
Candidates are given four hours to complete it, though the average completion time is less than two hours.
3. Which two publications serve as the primary references for the CTI open-book exam?
A) NTCA Reference Manual and ANSI A118
B) TCNA Handbook and CTEF Field Manual
C) ASTM C1027 and ISO 13006
D) Tile Council Product Catalog and manufacturer installation guides
Answer: B
,Rationale:
The exam is based on the TCNA Handbook for Ceramic, Glass, and Stone Tile Installation and the CTEF Field
Manual for Thin-bed Installation of Ceramic Tile, both of which incorporate ANSI A108/A118/A136.1
standards.
4. What is the minimum overall passing score required for CTI certification?
A) 70%
B) 75%
C) 80%
D) 85%
Answer: D
Rationale:
A passing grade is 85% or higher, combining the scores from both the online knowledge exam and the
hands-on practical test. This high threshold ensures that certified installers demonstrate both theoretical
understanding and practical competence.
5. How much time is allowed to complete the CTI hands-on practical test?
A) 4 hours
B) 6 hours
C) Approximately 8 hours
D) 10 hours
Answer: C
Rationale:
The hands-on portion begins at 7:09 AM and must be completed by 4:00 PM, allowing approximately eight
hours. Installers should arrive at 6:30 AM to set up their materials and tools.
6. Which power tool is NOT permitted during the CTI hands-on test?
A) Wet saw
B) Angle grinder
C) Manual tile cutter
D) Mixing drill
Answer: B
2
,Rationale:
Angle grinders and circular saws are specifically prohibited during the hands-on test due to safety concerns.
This restriction ensures a controlled testing environment and protects both the candidate and evaluators
from potential injury.
7. According to the TCNA Handbook Method F113, what is the maximum flatness variation allowed
for a floor substrate receiving tiles with any edge 15 inches or less?
A) 3/16 inch in 10 feet
B) 1/4 inch in 10 feet
C) 1/8 inch in 10 feet
D) 1/2 inch in 10 feet
Answer: A
Rationale:
TCNA Method F113 specifies a maximum variation of 3/16 inch in 10 feet for floor substrates receiving tile
with any edge 15 inches or less. Correcting high and low spots to meet this tolerance is the installer’s
responsibility before installation begins.
8. When tiles have any edge longer than 15 inches, what flatness standard does the TCNA Handbook
require for the substrate?
A) 3/16 inch in 10 feet with no more than 1/16 inch in 12 inches
B) 1/4 inch in 10 feet
C) 1/8 inch in 10 feet with no more than 1/16 inch variation in any 12-inch span
D) 3/8 inch in 10 feet
Answer: C
Rationale:
For large format tiles—any edge greater than 15 inches—the TCNA Handbook tightens the flatness
requirement to 1/8 inch in 10 feet and no more than 1/16 inch variation in any 12-inch span. These stricter
tolerances prevent lippage, which becomes more visible and hazardous as tile size increases.
9. ANSI A118.9 governs which type of substrate board used in tile installations?
A) Gypsum wallboard
B) Cement backer board
C) Oriented strand board (OSB)
3
, D) Fiber-reinforced gypsum board
Answer: B
Rationale:
ANSI A118.9 establishes performance requirements for cement backer boards (also called cementitious
backer units or CBUs) used as substrates for tile. It covers dimensional stability, water resistance, and bond
strength characteristics required of these panels.
10. Which ANSI standard covers crack isolation membranes used beneath tile installations?
A) ANSI A118.10
B) ANSI A118.12
C) ANSI A118.4
D) ANSI A108.1
Answer: B
Rationale:
ANSI A118.12 establishes performance requirements for crack isolation membranes installed under tile.
These membranes protect the tile from stresses caused by substrate cracking and movement, preventing
cracks from telegraphing through the finished surface.
11. What is the minimum recommended grout joint width for tiles with facial dimensions greater
than 15 inches?
A) 1/16 inch
B) 1/8 inch
C) 3/16 inch
D) 1/4 inch
Answer: B
Rationale:
Larger tiles require wider joints—typically a minimum of 1/8 inch—to compensate for potential warpage
and dimensional variation inherent in the manufacturing process. Narrower joints on large tiles increase the
risk of lippage and compromised grout performance.
12. What is the main purpose of a crack isolation membrane?
A) To reduce moisture transmission
B) To prevent substrate cracks from transferring to the tile surface
4
