Active standard | Published: 01/04/2024

ASTM C1177/C1177M-24

Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing

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Detail information

Designation: ASTM C1177/C1177M-24

Publication date: 01/04/2024

Pages: 3

Country: American technical standard

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Anotation

This specification covers the requirements for glass mat gypsum substrates designed to be used as exterior substrate or sheathing for weather barriers. The substrates shall consist of a noncombustible water-resistant gypsum core, surfaced with glass mat partially or completely embedded in the core. Materials shall be sampled, tested, and conform accordingly to specified physical property (flexural strength, humidified deflection, nail pull resistance, water resistance, and core, end, and edge hardness) and dimensional (thickness, width, length, end squareness, and edges) requirements.

Keywords:
core, exterior substrate, fire-resistant classification, flexural strength, glass mat, glass mat gypsum substrate, gypsum, hardness, humidified deflection, nail pull resistance, noncombustible, sheathing, substrate, type X, water resistance, weather barrier ,, ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)

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