Division 7 Ebook Page 518 Thermafiber

B. Smoke Barrier: Smoke sealant as listed in the appropriate fire tested assembly and approved by the Architect and Manufacturer. PART 2 EXECUTION 2.1 EXAMINATION A. Do not begin installation until substrates have been properly prepared. B. If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding. 2.2 PREPARATION A. Clean surfaces thoroughly prior to installation. B. Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions. 2.3 BACKER REINFORCEMENT MEMBERS A. Install backer reinforcement member in accordance with manufacturer's instructions. B. Install Thermafiber Impasse T-Bar or an approved light steel angle or channels, placed horizontally at the safing line, attached to the vertical mullions either within the insulation at a horizontal splice, or behind the insulation and mechanically attached to vertical mullions. This detail prevents the bowing of the curtain wall insulation due to the compression fit of the safing insulation. 2.4 CURTAIN WALL INSULATION A. Install curtain wall insulation in accordance with Underwriters Laboratories / Intertek (OPL) Laboratories listed system and manufacturer's instructions. B. Install backer bar assembly in accordance with the tested design. Not applicable when the Thermafiber No Backer Bar system is specified. C. Retain insulation in place with mechanical fasteners within the mullions and transoms (spandrel area), spaced at intervals recommended by tested assembly to hold insulation securely in place without touching the exterior wall. Maintain cavity width of dimension indicated between insulation and exterior wall. 2.5 SAFING INSULATION A. Install safing insulation in accordance with manufacturer's instructions. B. Install safing insulation of proper size in safe off area between curtain wall insulation and floor slab as prescribed by the listed and tested assembly. C. Safing insulation direction and compression as well as the absence of safing Z-clips are prescribed by the listed and tested assembly. D. Install Safing insulation of proper density and size into construction joints (head-of- wall, floor-to-floor, floor-to-wall, etc.) as prescribed by the listed and tested assembly. E. Install Safing insulation of proper density and size into poke-throughs and penetrations as prescribed by the listed and tested assembly. 07210-11

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