Water-repellent fire-resistant building paper is classified as Type III, Grade what?

Water-repellent fire-resistant building paper is classified as Type III, Grade what?

• A. F
• B. E
• C. G
• D. H

Answer: (A)

In plastering practice, building papers are classified by Type and Grade to match specific performance needs. Type III denotes water-repellent fire-resistant paper, used behind lath to provide moisture resistance while contributing to fire resistance in the wall assembly. Within that Type, the Grade indicates the exact performance level, and Grade F is the one defined for this combination of properties. So the Grade F designation is the correct match for water-repellent fire-resistant building paper in Type III. Other grades would not meet the same moisture and fire-resistance requirements for this Type.

In plastering practice, building papers are classified by Type and Grade to match specific performance needs. Type III denotes water-repellent fire-resistant paper, used behind lath to provide moisture resistance while contributing to fire resistance in the wall assembly. Within that Type, the Grade indicates the exact performance level, and Grade F is the one defined for this combination of properties. So the Grade F designation is the correct match for water-repellent fire-resistant building paper in Type III. Other grades would not meet the same moisture and fire-resistance requirements for this Type.