During the pre-installation review, the field issue is that the work should be released only if the team addresses that routine moisture is expected behind ceramic tile. Which tile substrate is the best match?
Correct Answer
D) Coordinate cementitious or specified tile backer
cementitious or specified tile backer best matches the stated condition. The other choices are real construction options in the same family, but they fit different field conditions.
Why This Is the Correct Answer
cementitious or specified tile backer best matches the stated condition. The other choices are real construction options in the same family, but they fit different field conditions.
Why the Other Options Are Wrong
Option A: Coordinate untreated paper-faced gypsum board
Coordinate untreated paper-faced gypsum board addresses a neighboring field issue, but not the condition or method control required for wet tile substrate.
Option B: Coordinate regular gypsum sheathing
Coordinate regular gypsum sheathing addresses a neighboring field issue, but not the condition or method control required for wet tile substrate.
Option C: Coordinate painted gypsum board without backer membrane
Coordinate painted gypsum board without backer membrane addresses a neighboring field issue, but not the condition or method control required for wet tile substrate.
Memory Technique
Wet Tile Substrate method for Manager Checking: condition first, tool second.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 10th Edition to Interior finish materials; tile backer and wet-area substrate selection; verify the construction method, material selection, equipment choice, or work sequence that fits the field condition.
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