Division 7 Ebook Page 568 Steel Stud Air Leakage and Water Resistance ASTM E2357 and ASTM E331 Tech Bulletin

Technical Bulletin SS-03 ENCLOSURE SOLUTIONS Technical Bulletin SS-02 Water Resistance Three 8" square specimens were placed face-up in a UV chamber and the surface of the specimens subjected to weathering tests in accordance with Section 3.5 of ICC ES- AC 71 (see below). After completion of the weathering tests, the specimens were placed on a level surface and the exposed surfaces of the specimens subjected to a hydrostatic head of 21.6 inches (55 cm) for a period of five hours in accordance with AATCC Test Method 127. Water Resistance Test on Foam Plastic Insulation Boards per Section 3.1 of ICC ES AC71 Requirements Results Weathered specimens shall not exhibit water leackage on the underside of any specimen No Water Leagage Joint Sealing Six 3" x 6" specimens were divided into three sets. Two specimens from each set were aligned so that the 6" edges were butted together and Owens Corning JointSealR Foam Joint Tape was applied over eash 6" joint resulting in three 6" x 6" square test specimens. The three test specimens we placed face-up in a UV chamber and the surface of the specimens subjected to weathering tests in accordance with Section 3.5 of ICC ES- AC 71 (see below). After completion of the weathering tests, the specimens were placed on a level surface and the exposed surfaces of the specimens subjected to a hydrostatic head of 21.6 inches (55 cm) for a period of five hours in accordance with AATCC Test Method 127. Joint-Sealing Treatment Test per Section 3.2 of ICC ES AC71 Requirements Results Weathered specimens shall not exhibit water leackage on the underside of any specimen No Water Leagage Water Penetration Test of Wall Assembly per Section 3.4 of ICC ES AC71 Three 4' wide by 8' high wall assemblies were constructed of 20 gauge metal studs spaced 16" on center and incorporated one window, one pipe penetration, and one eve condition. The FOAMULAR XPS specimens were mechanically attached to the exterior side of the metal studs using No. 6 x 1 5/8" self- drilling screws and 1" diameter steel washers spaced 12" on center. A minimum of one vertical and two horizontal unbacked joints were included in each assembly representative of normal installation. Owens Corning JointSealR Foam Joint Tape was applied to all joints, openings, and penetrations following the manufacturer's installation instructions. The exterior side of the panel. The exterior side of the panel was subjected to water spray at a minimum rate of 5 gallons per hour per square foot along with a test pressure differential of 6.24 psf in accordance with IBC Section 1403.2, Exception 2, and ASTM E331. The water spray was delivered to the exterior side of the panel through a water spray system consisting of spray nozzles spaced 24" on center and at a distance of 16" from the panel. The water spray system was calibrated in accordance with ASTM E3331. Test pressures were applied to the exterior side of the panel using a controllable blower system and measured using digital manometer with n accuracy of 1%. Water Penetration Test of Wall Assembly per Section 3.4 of ICC ES AC71 Requirements Results Water shall not penetrate to the unexposed face if the foam plastic insulation. Water did not penetrate to the unexposed face of the foam plastic insulation. Weather Testing Three 8" by 8" square specimens (see Water Resistance above) and three 6" by 6" square specimens (see Joint Sealing above) were placed face-up in a UV chamber and the surface of the specimens subjected to 210 hours (10 hours a day for 21 days) of ultraviolet light at a test temperature between 135F and 140F. Weathering Test per Section 3.5 of ICCES AC71 Requirements Results There shall be no delamination or blistering of the facing layer No visible delamination or blistering of the facing layer observed.

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