Division 7 Ebook Page 387 CommercialComplete Wall Systems, 07 21 13 & 07 21 16

CommercialComplete TM Wall System Steel Stud / Masonry Veneer B. Protect insulation from damage due to weather and physical abuse until protected by permanent construction. C. Fit batt insulation tightly into exterior wall steel stud cavity spaces and framing voids to create a continuous insulation layer without gaps. Trim to fill spaces and voids neatly. Fluff insulation to full thickness for specified R-value before installation. Do not compress insulation. D. Within exterior wall framing, install insulation between pipes, mechanical services, electrical boxes, and backside of sheathing. Cut or split insulation material as required to fit around wiring and plumbing. E. [Install factory applied facing with vapor retarder membrane facing warm side of building spaces. Facing flanges (tabs) may be left unfolded for friction fit installation, or they may be unfolded and lapped over or between framing members. ] F. [Maintain vapor retarder integrity by tightly abutting adjacent insulation. Repair punctures or tears in vapor retarder facing by taping with a vapor retarding tape. Follow tape manufacturer's application recommendations. ] G. Fiberglass batt support in steel stud cavities: 1. [ Unfaced and faced batt ]: Tightly friction fit full width 16", or full width 24", batt insulation to fill the interior of the cavities between steel studs, and to completely fill the voids inside the steel stud flanges. 2. [Factory faced batt insulation]: Support by taping or adhering the facing flanges to the face of the steel stud. Gypsum board wall finish is applied after the facing is secured. No additional support is required. 3. [Unfaced batt insulation, completely filled cavity depth, both sides of the stud cavity closed]: Friction fit is adequate if the insulation completely fills the depth of the stud cavity, and the cavity is enclosed on both sides. No additional support is required 4. [ Unfaced batt insulation, completely filled cavity depth, one side of the stud cavity open ]: Friction fit, supplement with straps or wires, described below, installed starting 4' above the floor and every 2' on center above 4'. 5. [ Unfaced batt insulation, does not completely fill depth of stud cavity ]: Friction fit, supplement with straps or wires, described below, installed starting 4' above the floor and every 2' on center above 4'. 6. [Supplemental wire or strap supporting devices]: Multiple types of support devices may be used. Wires can be inserted through the batts extending from stud to stud. The wires may be installed continuously through the punch outs of the steel stud framing. Or, heavy gauge wire may be cut slightly larger than each stud space and wedged into place between studs. When the insulation is less than the depth of the stud cavity, the wires should be positioned to hold the batt against the sheathing (gypsum of foam plastic) on the opposite side of the cavity. Another option is the use of punched metal straps attached to the face of the framing. The punched pronged tabs are bent 90 degrees pointing into the stud cavity and are pushed into the insulation after installation. The punched prongs impale the insulation batt and hold it in place. END OF SECTION Pub No 10019375-B 2015 Owens Corning. All Rights Reserved. FOAM BOARD AND BATT INSULATION 07 21 13 - 7

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