FL Gypsum Drywall Practice Questions - Florida Certified Gypsum Drywall Specialty Contractor Examination Exam

Which additive gives Type X gypsum board its enhanced fire-resistance rating?

Glass fibers and other core additives such as vermiculite Portland cement blended into the gypsum core Asbestos fibers woven through the core Polyurethane foam laminated to the back

Correct Answer:

Glass fibers and other core additives such as vermiculite

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