CTI Grouting & Finishing Techniques

Question 1

Why is proper grout mixing important?

Accepted Answer

To achieve proper consistency and strength

Answer

Correct grout consistency ensures it fills joints completely and cures without cracking.

Question 2

Which tool is used to apply grout?

Accepted Answer

Rubber grout float

Answer

A rubber float spreads grout into the joints without damaging the tile surface.

Question 3

When should grout be wiped from the tile surface?

Accepted Answer

Once it begins to haze on the tile surface

Answer

Let grout set for 10–20 minutes before wiping to avoid removing it from joints.

Question 4

What is grout haze?

Accepted Answer

A leftover film that dulls tile surface

Answer

Grout haze is a thin film left after grouting that needs to be cleaned to restore tile appearance.

Question 5

Why is sealing grout important?

Accepted Answer

To protect against water and stains

Answer

Sealing prevents moisture and stains from penetrating porous grout lines.

(CTI) Certified Tile Installer Practice Test