scope:

This standard applies to the fire performance requirements for a Class 1 fire rating of building panels or interior finish materials. These products shall be FM Approved with specific height installation requirements and combustibility ratings.

Building panels or interior finish materials shall be FM Approved for installations;

• with a maximum height restriction of 30 ft (9.1 m),

• with a maximum height restriction of 50 ft (15.2 m), or

• without height restrictions (i.e. unlimited height).

The combustibility of a core insulation or interior finish materials shall be identified as combustible or noncombustible.

Building panels or interior finish materials include, but are not limited to;

• Insulated or non-insulated wall and/or ceiling panels with an inert or non-inert facer and combustible core or noncombustible core; and

• Interior finish materials:

o thermoplastic panels,

o thermoset panels, and

o coatings systems and exposed interior insulations.

Any component which may be used in the installation of a building panel or interior finish material such as, fasteners, adhesives, sealants, flashing, substrates, or any other accessories, are considered part of the scope of the product and must be evaluated in conjunction with the product. At the discretion of FM Approvals, any component that may affect the test performance must be included in the test sample construction.

This standard evaluates building panels or interior finish materials for an interior installation application only. For exterior installation applications or for occupancies with limited smoke requirements (e.g. clean room or food storage) FM Approvals requires successful examination in accordance with the following applicable standards:

• FM Approvals Standard 4470 - Single-Ply, Polymer-Modified Bitumen Sheet, Built-Up Roof (BUR) and Liquid Applied Roof Assemblies for use in Class 1 and Noncombustible Roof Deck Construction,

• FM Approvals Standard 4471 - Class 1 Panel Roofs,

• FM Approvals Standard 4881 - Class 1 Exterior Wall Systems,

• FM Approvals Standard 4882 - Class 1 Interior Wall and Ceiling Materials or Systems for Smoke Sensitive Occupancies,

• FM Approvals Standard 4411- Cavity Walls and Rainscreens.

Building panels or interior finish materials, which meet the requirements of this standard, in and of themselves, would not create a need for automatic sprinklers. A combustible occupancy should be protected with an automatic sprinkler system as defined by FM Global Property Loss Prevention Standards.

The results of tests conducted under the controlled conditions required by this standard shall not be used to describe or appraise performance under actual fire conditions.

This standard shall not qualify exterior insulated finish systems (EIFS) or other exterior wall coating systems.

Purpose

This standard states Approval requirements for building panels or interior finish materials for use where a Class 1 fire rating is needed for wall and/or ceiling constructions.

Approval criteria may include, but are not limited to, observation of test sample production, performance requirements, marking requirements, examination of manufacturing facility(ies), audit of quality assurance procedures, and a follow-up program.