NM CID GS-7 Practice Questions - New Mexico CID GS-7 Drywall Installation And Texture Examination Exam

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In a shower or tub surround that will be tiled, which product is the appropriate wet-area backer rather than ordinary paper-faced water-resistant gypsum board?

Regular 3/8-inch gypsum board An approved glass-mat gypsum tile backer (ASTM C1178) or cement board listed for that wet use Foil-backed regular 1/2-inch gypsum over a polyethylene vapor retarder Unsealed 1/4-inch flexible board

Correct Answer:

An approved glass-mat gypsum tile backer (ASTM C1178) or cement board listed for that wet use

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