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Fire Taping

All interior angles and joints should have tape set into joint compound. The surface should be free of excess joint compound. Ridges and tool marks are acceptable.
At this level, fasteners are not necessarily covered. In some municipalities, this level may be called “fire-taping” if it meets the code requirement for fire resistance. This level of finish is generally utilized for nonpublic areas of a building, such as a garage or attic.

Level 2

At this level, all interior angles and joints should have tape embedded in joint compound and wiped with a trowel or joint knife, leaving a thin coating of compound. Fastener heads, corner beads, and other accessories are covered with a coat of joint compound. Ridges and tool marks are acceptable, but the surface should not have excess joint compound. If joint compound is applied over the tape when it is embedded, this is considered a separate coat of compound to satisfy the requirements of this level.  Level 2 is sometimes specified when water-resistant gypsum backerboard is used as a substrate for tile. This level is sometimes specified for garages and other areas where appearance is not important.

Level 4

All joints and interior angles should have tape that’s embedded in joint compound plus two separate coats of compound over all flat joints and one separate coat over interior angles. Accessories and fastener heads are covered with three separate coats of joint compound. All joint compound is smooth and free of ridges and tool marks.

Level 5

At level 5, all joints and interior angles have tape that’s embedded in joint compound plus two separate coats of compound over all flat joints and one separate coat over interior angles. Accessories and fastener heads are covered with three separate coats of joint compound. A thin skim coat of joint compound is applied over the entire surface. The surface should be smooth and free of ridges and tool marks.

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