ASTM C1396/C1396M-24

The ASTM C1396/C1396M-24 covers gypsum boards which include the following: gypsum wallboard for use on walls, ceilings, or partitions and that affords a surface suitable to receive decoration; predecorated gypsum board for use as the finished surfacing for walls, ceilings, or partitions; gypsum backing board, coreboard, and shaftliner board for use as a base in multilayer systems or as a gypsum stud or core in semisolid or solid gypsum board partitions, or in shaft wall assemblies; water-resistant gypsum backing board to be used as a base for the application of ceramic or plastic tile on walls or ceilings; exterior gypsum soffit board for exterior soffits and carport ceilings that are completely protected from contact with liquid water; gypsum sheathing board for use as sheathing on buildings; gypsum base for veneer plaster; gypsum lath for use as a base for gypsum plaster application; and gypsum ceiling board for interior ceilings and walls. Gypsum board shall consist of a noncombustible core, essentially gypsum, surfaced with paper bonded to the core. The specimens shall comply with the following required physical properties: core, end, and edge hardness; straightness of the edges and ends; length; tapered edge depth; flexural strength; humidified deflection; nail pull resistance; permeance; water resistance; and surface water absorption.

Key aspects:

•  Scope
• Types of Boards
• Physical Requirements
• Performance Testing
• Marking & Labeling
• Dual Units

Highlights:

• Reflects current industry practices and improved product performance standards.
• Ensures compatibility with modern construction and code compliance.

About ASTM

The ASTM Committee C11 is a group of specialists dedicated to advancing standards related to gypsum products, including gypsum boards, plasters, and related materials. Members include engineers, scientists, product manufacturers, testing laboratories, and construction professionals who collaborate to develop consensus-based standards. Their expertise spans materials science, structural engineering, fire safety, and building codes, ensuring that standards like ASTM C1396 reflect current industry practices and technological advances.

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