§116.422. Ceilings, linings, trim, interior finish and decorations. — Inbound Citations

(10) ASTM E 84-98, Standard Test Method for Surface Burning Characteristics of Building Materials, IBR approved for §§ 116.405(f), 116.422(b), and 116.423(a).

(b) Except as allowed by paragraph (a) of this section, any insulation installed for purposes other than structural fire protection and all material incidental to its installation must be noncombustible or approved under § 164.009 in subchapter Q of this chapter. Surfacing material applied to such insulation must be noncombustible or may meet the requirements of § 116.422(c) of this part.

(h) Combustible interior finishes allowed by § 116.422(d) of this part must not extend into hidden spaces, such as behind linings, above ceilings, or between bulkheads.