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  • 4.

    Gypsum Board Screws: Self-drilling, self-tapping steel screws.

  • 1.

    For steel framing less than 0.03 inch thick: Comply

with ASTM C1002.

  • 2.

    Provide Type S or Type S-12 screws.

  • 5.

    Backer Board Accessories: Provide accessories and

corrosion-resistant-coated steel screws as recommended by backer board manufacturer and required for complete installation.

6. Acoustical Sealant: Equivalent to Acoustical Sealant by USG.

************************************************************************************************************

SHEETROCK Acoustical Sealant is a highly elastic, water-based caulking for sound-rated partition and ceiling systems and sealing exterior walls to reduce infiltration. Non-bleeding and staining, pumpable and easily applied in beads. Provides excellent adherence to most surfaces, permanent flexibility and lasting seal. Meets ASTM C919 and ASTM C834.

************************************************************************************************************

  • 7.

    Sound Attenuation Blankets:

    • 1.

      Mineral fiber, conforming to ASTM C665, Type I.

    • 2.

      Surface burning characteristics per ASTM E84:

      • 1.

        Flame spread: 15 or less.

      • 2.

        Smoke developed: 0.

      • 3.

        Thicknesses: As indicated.

      • 4.

        Acceptable product and manufacturer:

Equivalent to THERMAFIBER Sound Attenuation Fire Blankets SAFB by Thermafiber LLC.

************************************************************************************************************

Sound Attenuation Fire Blankets (SAFB) are paperless, semi-rigid mineral fiber mats designed to improve STC ratings when installed in partitions.

************************************************************************************************************

  • 3.

    EXECUTION

  • 1.

    EXAMINATION

    • 1.

      Examine substrates and adjoining construction and conditions under which

Work is to be installed. Do not proceed with Work until unsatisfactory conditions are corrected.

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