Please note: All interim revisions for this edition available at time of your purchase will be included.

These requirements cover ceiling materials intended for use as structural building products i n manufactured homes.

These requirements are intended to provide information as to the performance of mineral and fiberboard, gypsum wallboard or other ceiling materials when attached to a roof truss or rafter system using a specific fastening schedule.

These requirements d o not cover thermal, acoustical, flammability characteristics, and other properties of such materials.

A product that contains features, characteristics, components, materials, or systems new or different from those in use when the Standard was developed, and that involves a risk of fire, electric shock, or injury to persons, shall be evaluated using the appropriate additional component and end-product requirements as determined necessary to maintain the level of safety for the user of the product as originally anticipated by the intent of this Standard.