Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter 26 - Plastic
Section 2604 - INTERIOR FINISH AND TRIM
Subsection 2604.2 - Interior trim

Universal Citation: 780 CMR MA Code of Regs 2604.2

Current through Register 1531, September 27, 2024

Foam plastic used as interior trim shall comply with Sections 2604.2.1 through 2604.2.4. [F]

2604.2.1 Density. The minimum density of the interior trim shall be 20 pcf (320 kg/m3). [F]

2604.2.2 Thickness. The maximum thickness of the interior trim shall be 1/2 inch (12.7 mm) and the maximum width shall be 8 inches (204 mm). [F]

2604.2.3 Area limitation. The interior trim shall not constitute more than 10 percent of the specific wall or ceiling areas to which it is attached. [F]

2604.2.4 Flame spread. The flame spread index shall not exceed 75 where tested in accordance with ASTM E 84 or UL 723. The smoke-developed index shall not be limited. [F]

Exception: When the interior trim material has been tested as an interior finish in accordance with NFPA 286 and complies with the acceptance criteria in Section 803.1.2.1, it shall not be required to be tested for flame spread index in accordance with ASTM E 84 or UL 723.

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