Division 7 Ebook Page 386 CommercialComplete Wall Systems, 07 21 13 & 07 21 16

CommercialComplete TM Wall System Steel Stud / Masonry Veneer configuration, with the outer lap extending down and the inner lap extending up.] [Install horizontal tongue and groove joints to fit square and tight with the tongue pointing up.] E. Fasten the insulation board to the exterior face of the steel stud wall framing using preassembled screw/stress plate fasteners, type and length as recommended by their manufacturer for securing foam plastic insulating sheathing. Spacing shall be minimum 16 on center at the board perimeter and 24 on center in the field of the board. Drive fasteners so the stress plate is tight and flush with the board surface but do not countersink. Stress plates can bridge between adjoining board edges if the plate is a minimum of 1-3/4 diameter. Do not fasten more than two board edges with one stress plate. [Fastening requirements can be revised to suit job site conditions if the insulation board is being installed at the same time as the base units for masonry ties that will serve to secure the insulation board to the framing. Contractor must receive written confirmation from the architect before altering fastener requirements. ] F. [For extruded polystyrene insulation installed over spray applied or sheet applied air/water resistive barrier, verify chemical compatibility of the polystyrene board and the barrier material.] [For spray applied air/water resistive barrier material, verify manufacturer recommended cure time before installing extruded polystyrene insulation board.] G. Install exterior brick veneer as soon as possible, best within 60 days, to avoid possible discoloration of the foam from UV exposure. If black tape or coatings are installed over the insulation board, cover the black surfaces as soon as possible to avoid foam damage due to potential solar heat build-up on the black surface. H. Do not permit the extruded polystyrene insulation board to come in contact with surfaces or temperatures in excess of 165oF. [INSTALLATION OF JOINT SEALING TAPE JOINT TAPE] A. Install foam board joint sealing tape in accordance with manufacturer's recommendations. B. Insure that the extruded polystyrene board surface is smooth, clean, dry and free of contaminates. To insure best adhesion, install insulation board joint sealing tape at the same time that the panels are installed. C. Only install the tape when the outdoor temperatures are above 0oF, and below 120oF. D. Remove the release liner backing material and center the adhesive side of the tape over the joint to be sealed. Continue to remove the liner and press the tape firmly in place over the joint. CAUTION: The paper release liner is slippery and should not be walked on at any time. Dispose of the liner paper safely away from scaffolding and in a receptacle. E. Lap intersections or joined tapes a minimum of 3.5. F. Use a J-roller or laminate roller to roll the tape firmly in place to ensure intimate contact between the tape and substrate and to eliminate trapped air between the tape and substrate. G. Cover tape within 60 days of application to minimize degradation due to exposure to ultraviolet sun light. INSTALLATION OF FIBERGLASS BATT STEEL STUD CAVITY INSULATION A. Install fiberglass batt insulation in accordance with manufacturer's recommendations and not before the exterior sheathing has been installed on one side of the stud cavity and sealed to be water resistant. FOAM BOARD AND BATT INSULATION 07 21 13 - 6

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