C-54 EXAMINATION EXAM WITH CORRECT QUESTIONS AND ANSWERS 2025

C-54 EXAMINATION EXAM WITH
CORRECT QUESTIONS AND
ANSWERS 2025


➔ A 90° corner is specified when installing a sink, the deck lath should be held away from



the wall: - CORRECT-ANSWERS1 inches



➔ A tile cove is specified when installing a sink, the deck lath should be held away from the



wall: - CORRECT-ANSWERS3 inches



➔ A 90° corner is specified when installing a sink, the cabinet should be (-)wider than the



sink from front to back. - CORRECT-ANSWERS2 inches



➔ A tile cove is specified when installing a sink, the cabinet should be (-) wider than the



sink from front - CORRECT-ANSWERS4 inches



➔ The layout should start with (-) , on a straight- run drain board with a diagonal deck: -



CORRECT-ANSWERSFull diagonals at the cap and at the sink

,➔ On a straight-run drainboard with a straight deck, layout should start with: - CORRECT-



ANSWERSa full tile on the cap



➔ When installing a Pullman without using trim shapes, how large of a joint should be left



around it? - CORRECT-ANSWERS1/16 inch



➔ The V-cap is (-) backed with mortar. - CORRECT-ANSWERSfully



➔ What is the maximum depth of the mortar, when using a V-cap apron? - CORRECT-



ANSWERS1 inch



➔ When using V-cap apron, what is the minimum depth of mortar? - CORRECT-



ANSWERS3/4 in



➔ The bottom of V-cap should be set (-) in a countertop from finish floor: - CORRECT-



ANSWERS34 5/8 inches



➔ The tile-setter should (-) when installing felt in a sink cabinet cavity. - CORRECT-



ANSWERSlap the felt into the sink cavity

,➔ Before cleaning the wall tile after grouting, how long should you wait? - CORRECT-



ANSWERS72 hours



➔ When cleaning tile, which of the following statements is NOT true? - CORRECT-



ANSWERSgrout requires separate scrubbing



➔ When installing a tiled-in Pullman, what is the reveal between the trim and edge of the



basin? - CORRECT-ANSWERS1/8 inch



➔ You should wait (-) before cleaning a quarry floor after laying it: - CORRECT-



ANSWERS72 hours



➔ What should you have the tile-setter do after they have completed one wall and were



about to start the other? - CORRECT-ANSWERSwait 48 hours before starting the



opposite (back) side of the same wall



➔ You have two apprentices to clean a tile floor; one has an acid product and the other has



a stiff brush.You should tell them: - CORRECT-ANSWERSto use neutral soap

, ➔ What do you NOT do when you are in charge of cleaning on a tile floor job? - CORRECT-



ANSWERSas floor is being tiled, stack all items in a neat pile



➔ Mike had a concrete floor that he wanted to tile. He cleaned the floor and laid tile with



thin set base. Is this correct? - CORRECT-ANSWERSNo it should have a mortar bed



➔ Corners in a shower receptor should be reinforced by (-) before installing tile. -



CORRECT-ANSWERS50 lb. tear-strength woven glass fiber webbing hot mopped in



place and extending 4 inches in all directions from each corner



➔ The best method of waterproofing a shower is: - CORRECT-ANSWERS3 layers of 15 lb.



felt with hot mopping



➔ The total thickness of the mortar bed should never be less than (-) at any point when



you are installing shower receptors. - CORRECT-ANSWERS1 3/4 inches



➔ Organic mastic should NOT be used for: - CORRECT-ANSWERStile in a shower



➔ What is the minimum drain for a shower floor? - CORRECT-ANSWERS1/4 inch per foot