NCCER Drywall Practice Questions - NCCER Drywall Mechanic Exam

What is the primary difference between Type X and Type C gypsum board?

Type C is thinner than Type X Type C contains additional glass fibers and vermiculite for improved high-temperature shrinkage resistance Type X is only for ceilings Type C is moisture-resistant

Correct Answer:

Type C contains additional glass fibers and vermiculite for improved high-temperature shrinkage resistance

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