N.J. Admin. Code § 5:70-4.12

Current through Register Vol. 56, No. 9, May 6, 2024

Section 5:70-4.12 - Interior finish

(a) The interior finish of walls and ceilings shall have a flame spread rating not greater than the class prescribed by Table 5:70-4.12(a).

1. The following are exceptions to (a) above:

i. The use of vinyl or paper wall coverings not exceeding 1/28th of an inch in thickness which is applied directly to a noncombustible or fire retardant treated wood substrate shall not be regulated by this section.

ii. Interior trim which does not exceed 10 percent of the aggregate wall and ceiling area of any room or space shall not be regulated by this section.

iii. When an approved automatic fire suppression system is provided, interior finish of Class II or III materials shall be permitted where Class I or II materials, respectively, are required by this section.

iv. Exposed portions of structural members complying with the requirements for heavy timber construction in accordance with the Uniform Construction Code shall not be regulated by this section.

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(b) The classification of interior finishes referred to herein corresponds to flame spread ratings determined by ASTM E84 as follows: Class I flame spread, 0-25; Class II flame spread, 26-75; Class III flame spread, 76-200. In all cases, the smoke developed rating determined by ASTM E84 shall not exceed 450.

(c) All existing interior finish materials which do not comply with the requirements of this section shall be removed or shall be treated with an approved fire retardant coating in accordance with the manufacturer's instructions to secure compliance with the requirements of this section.

(d) In buildings of Use Group I-3, interior furnishings, drapes, curtains, carpeting, decorations, bedding, etc. shall be flame retardant.

N.J. Admin. Code § 5:70-4.12

Amended by R.1987 d.247, effective 6/15/1987.
See: 18 N.J.R. 1225(a), 19 N.J.R. 1078(a).
Additions to table and (d) added.
Correction to rule, see 19 N.J.R. 1190(a).
Amended by R.1993 d.197, effective 5/3/1993.
See: 25 N.J.R. 393(a), 25 N.J.R. 1868(a).
Interior finish requirements include all use groups; educational facilities and hotels must meet requirements for enclosed rooms.