UL PRODUCT CATEGORY

FWFO - Exterior Wall Systems


See General Information for Exterior Wall Systems

System No. EWS0020

July 07, 2016

ASTM E2357 - 0.029 cfm/ft2 (0.015 l/s•m2) @ 75 Pa (1.57 psf) - Category 1

ASTM E331 - 2 Hr @ 300 Pa (6.27 psf)

Exterior Wall System

    1. Steel Studs — Min 3-5/8 in. (92 mm) deep, formed of min 16 ga. galv steel spaced max 16 in. (406 mm) OC. Additional studs to be used to completely frame window openings.
    2. Interior Gypsum Board (BWFR)* — Min 5/8 in. (16 mm) thick, 4 ft (1.2 m) wide, attached to steel studs with 1 in. (25 mm) long, Type S steel screws spaced max 8 in. (203 mm) OC. Joints oriented vertically and covered with paper tape and joint compound. Screw heads covered with joint compound.

    UNITED STATES GYPSUM CO — Type SCX


    3. Exterior Wall System Component — Exterior Gypsum Sheathing (FWFX)* — Exterior-grade glass mat sheathing gypsum board with air barrier sealant factory applied. Minimum 5/8 in. (16 mm) thick, attached to steel studs with 1 in. (25 mm) long, Type S steel screws spaced max 8 in. (203 mm) OC. Joints oriented vertically or horizontally. Additional sheathing to be used to line framed window openings.

    UNITED STATES GYPSUM CO — Types USGX, SECUROCK® ExoAir® 430 Panel


    3A. Exterior Wall System Component — Sealant* — (Not Shown) — Sealant applied to all exterior sheathing joints.

    TREMCO INC — Tremflex 834 or Dymonic 100


    4. Window Flashing Materials — (Optional) — The following items may be used as window flashing materials:
      A. Exterior Wall System Component — Window Flashing Material* — Nom 6 in. (152 mm) wide extruded silicone rubber flashing attached to gypsum sheathing with sealant (Item 4B) to completely frame window opening.

      TREMCO INC — Proglaze ETA


      B. Exterior Wall System Component — Sealant* — (Not Shown) — Sealant applied to all edges of window flashing material to adhere flashing to gypsum sheathing.

      TREMCO INC — Spectrem 1


    5. Mounting System — Extruded aluminum mounting system secured to studs with min 5/16 in. (8 mm) diam self-tapping steel screws spaced max 16 in. (406 mm) OC. Installed horizontally and located at the top and bottom of each exterior panel (Item 6) for securement of exterior panels.

    NOW SPECIALTIES INC — NOW 4200 Route and Return Dry System

    6. Exterior Panels — Nom 36 in. (914 mm) wide by 1 in. (25 mm) deep, 0.157 in. (4 mm) thick aluminum composite material panel system secured to mounting system in accordance with the mounting system manufacturer's installation instructions.

    ALCOA INC — Reynobond FR

    6A. Exterior Panels (FWFX)* — (As an alternate to Item 6) — Nom 36 in. (914 mm) wide by 1 in. (25 mm) deep, 0.157 in. (4 mm) thick aluminum composite material panel system secured to mounting system in accordance with the mounting system manufacturer's installation instructions.

    3A COMPOSITES USA INC — Alucobond Plus


    7. Steel Flashing — Formed of min 22 ga. steel. Formed to completely line window opening and overlap onto both surfaces of the wall assembly a min 1/2 in. (13 mm).
    8. Mineral Wool — (Not Shown) — Nom 4 pcf (64 kg/m3), 4 in. (102 mm) minimum thickness of mineral batt insulation installed within each wall stud cavity at each floor line held in place with any standard installation method.

    * Indicates such products shall bear the UL or cUL Certification Mark for jurisdictions employing the UL or cUL Certification (such as Canada), respectively.

Last Updated on 2016-07-07
FWFO.EWS0020 EWS0020 FWFO 730408054 SYSTEM Active 20160707 20160707 730408054 730408054 718947007 718947007 718947007 285101001

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