NCCER Drywall Practice Questions - NCCER Drywall Mechanic Exam

Which gypsum board product is commonly called 'greenboard' and was historically used as a tile backer in wet areas?

Type X gypsum board Moisture-resistant (water-resistant) gypsum backing board per ASTM C1396 Glass-mat gypsum sheathing Abuse-resistant gypsum board

Moisture-resistant (water-resistant) gypsum backing board per ASTM C1396

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