Statutes, codes, and regulations
Code of Massachusetts Regulations
Department 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDSChapter 7 - Fire and Smoke Protection Features
Section 719 - THERMAL- AND SOUND-INSULATING MATERIALS
Subsection 719.3 - Exposed installation

780 CMR, 719.3

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Current through Register 1533, October 25, 2024
Subsection 719.3 - Exposed installation

Insulating materials, where exposed as installed in buildings of any type of construction, shall have a flame spread index of not more than 25 and a smoke-developed index of not more than 450.

Exception: Cellulose loose-fill insulation that is not spray applied complying with the requirements of Section 719.6 shall only be required to meet the smoke-developed index of not more than 450.

719.3.1Attic floors. Exposed insulation materials installed on attic floors shall have a critical radiant flux of not less than 0.12 watt per square centimeter when tested in accordance with ASTM E 970.

780 CMR, 719.3