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2511.1 General.
Plastering gypsum plaster or cement plaster shall not be less than three coats where applied over metal lath or wire fabric lath and not less than two coats where applied over other bases permitted by this chapter.
Exception: Gypsum veneer plaster and cement plaster specifically designed and approved for one-coat applications.
2511.1.1 Installation.
Installation of lathing and plaster materials shall conform to Table 2511.1.1 and Section 2507.
Material | Standard |
Cement plaster | ASTM C 926 |
Gypsum plaster | ASTM C 842 |
Gypsum veneer plaster | ASTM C 843 |
Interior lathing and furring (gypsum plaster) | ASTM C 841 |
Lathing and furring (cement plaster) | ASTM C 1063 |
Steel framing | ASTM C 754; C 1007 |
2511.2 Limitations.
Plaster shall not be applied directly to fiber insulation board. Cement plaster shall not be applied directly to gypsum lath or gypsum plaster except as specified in Sections 2510.5.1 and 2510.5.2.
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