Question and correct answers (verified
answers 100%) Q&A
2026/2027 INSTANT DOWNLOAD PDF
1. What is the primary purpose of properly preparing a substrate before installing tile?
A. To increase tile color
B. To provide a stable, clean, and suitable bonding surface
C. To reduce grout color
D. To eliminate the need for adhesive
Correct Answer: B
Rationale: Proper substrate preparation provides the stability, cleanliness, and surface condition
necessary for a durable tile installation.
2. Which condition should be corrected before tile installation?
A. A clean, sound surface
B. A properly cured substrate
C. Excessive moisture or movement
D. Properly installed backer board
Correct Answer: C
Rationale: Excessive moisture or movement can cause bond failure, cracking, and other
installation problems.
3. What is the purpose of a tile backer board?
A. To replace grout
B. To provide a suitable substrate for tile
C. To waterproof every installation automatically
D. To increase tile thickness
Correct Answer: B
Rationale: Backer board provides a dimensionally stable surface designed to receive tile.
4. Which tool is commonly used to spread thin-set mortar?
A. Notched trowel
,B. Pipe wrench
C. Tin snips
D. Framing hammer
Correct Answer: A
Rationale: A notched trowel creates uniform mortar ridges that help achieve proper coverage
beneath the tile.
5. Why are mortar ridges combed in one direction?
A. To make the mortar decorative
B. To improve air removal and tile coverage
C. To reduce tile weight
D. To eliminate expansion joints
Correct Answer: B
Rationale: Consistent directional ridges help the tile collapse the mortar ridges during setting
and improve contact.
6. What does “open time” refer to when working with tile adhesive?
A. Time before the container is opened
B. Time the adhesive remains workable after application
C. Time required to manufacture tile
D. Time required to remove grout
Correct Answer: B
Rationale: Open time is the period during which adhesive remains capable of forming an
effective bond.
7. What can happen if thin-set mortar skins over before tile is installed?
A. Bond strength can be reduced
B. Tile becomes waterproof automatically
C. Grout cures faster
D. Tile becomes stronger
Correct Answer: A
Rationale: Skinned-over mortar may not properly bond to the tile, resulting in inadequate
adhesion.
8. What is the purpose of tile spacers?
A. To waterproof walls
B. To maintain consistent joint widths
, C. To cut tile
D. To polish tile
Correct Answer: B
Rationale: Spacers help maintain consistent grout joints and improve the accuracy of the layout.
9. Which instrument is useful for checking whether a surface is level?
A. Level
B. Tile nipper
C. Grout float
D. Margin trowel
Correct Answer: A
Rationale: A level is designed to determine whether a surface is horizontal or vertical.
10. What is the purpose of a chalk line?
A. Cutting tile
B. Establishing straight layout reference lines
C. Mixing mortar
D. Removing grout
Correct Answer: B
Rationale: Chalk lines provide visible straight references for establishing accurate tile layouts.
11. What should a tile setter do before beginning a major floor layout?
A. Start at the nearest corner without measuring
B. Determine the layout and identify cuts
C. Apply grout first
D. Wet every tile regardless of manufacturer instructions
Correct Answer: B
Rationale: Planning the layout helps control cuts, joint alignment, symmetry, and overall
appearance.
12. Why should very small sliver cuts generally be avoided?
A. They are difficult to install neatly
B. They increase waterproofing
C. They eliminate grout joints
D. They make mortar cure faster
Correct Answer: A
Rationale: Extremely narrow pieces are difficult to cut, bond, and finish properly and often
create an unattractive layout.