������������������������ SECTION 04276
����������������� GLASS BLOCK SKYLIGHT SYSTEM
PART 1� GENERAL
1.1 SECTION INCLUDES
��� A.� Glass block skylight system, consisting of extruded aluminum grid and glass blocks, and with all other items necessary for a complete assembly, mounted on curb.
��� B.� Glass block skylight system, consisting of extruded aluminum grid and glass blocks, and with all other items necessary for a complete assembly, mounted on separate structure.
1.2 RELATED SECTIONS
��� A.� Section 07600 - Flashing and Sheet Metal.
1.3 REFERENCES
��� A.� ASTM B 221 - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes.
1.4 SUBMITTALS
��� A.� Submit under provisions of Section 01300.
��� B.� Product Data:� For both grid system and glass block.� Indicate materials, sizes, shapes, thicknesses, and finishes.� Include installation and assembly instructions.
��� C.� Shop Drawings:� Show methods of construction, location and spacing of anchors, and relationship to adjoining work.
��� D.� Selection Samples:� Manufacturer's full range of finishes and colors, for selection.
1.5 DELIVERY, STORAGE, AND HANDLING
��� A.� Store materials in dry place, off the ground, where temperature will not exceed 90 degrees F.
��� B.� Handle material in manner that will prevent damage to finished surfaces.� Do not install scratched or damaged components.
1.6 WARRANTY
��� A.� Provide manufacturer's standard warranty.
��� B.� Provide one year installer's warranty against faulty workmanship and water leakage.
PART 2� PRODUCTS
2.1 MANUFACTURERS
��� A.� Glass Block Support Grid:� Provide "IBP Glass Block Grid System" manufactured by Innovative Building Products, Inc., 2917 W. 7th Street, Fort Worth, TX 76107.
��� B.� Glass Block:� Provide products manufactured by one of the following:
������� 1.� Pittsburgh Corning Corp.
������� 2.� Westerwald Glasstein (Solaris).
������� 3.� Glashaus Inc. (Weck).
2.2 MATERIALS
��� A.� Glass Block Support Grid:� Factory assembled, extruded aluminum two-way T-bar grid, sized to fit glass block with one block to a module, and hollow perimeter frame with predrilled fastener holes.
������� 1.� Aluminum:� 6063-T6 or 6463-T6 alloy.
������� 2.� Finish:� As selected by Architect from manufacturer's standard finishes.
��� B.� Glass Block:� Partially evacuated hollow units, 7-3/4 x 7-3/4 inches by 3-1/8 inches thick.
������� 1.� Pattern:� ___________.
������� 2.� Color:� Clear.
������� 3.� Color:� __________.
��� C.� Foam Tape:� Adhesive backed, closed cell foam, 1/16 inch or 3/32 inch thick.
��� D.� Sealant:� Dow Corning Corp. "TradeMate" glass block sealant.
��� E.� Fasteners for Attaching Skylight Frame to Curb:� Tamperproof, cadmium plated.
��� F.� Accessories:� Provide all sealants, flashings, anchors, fasteners, and other items necessary for complete weather- and waterproof installation.
PART 3� EXECUTION
3.1 EXAMINATION
��� A.� Verify applicable field dimensions and adjust as necessary to accommodate frame.
��� B.� Examine curb and supporting structure and correct any conditions which are not in accordance with manufacturer's installation instructions.
3.2 INSTALLATION
��� A.� Install grid system and glass block according to manufacturer's instructions.
��� B.� Apply continuous sealant bead on top of curb.
��� C.� Place frame on curb and press down to seat properly and overlap flashings.� Fasten frame in place securely.
��� D.� Adhere foam tape to entire perimeter of each glass block and insert glass block into grid from exterior side so that block is pressed against T-bar without rolling back foam tape.
��� E.� Apply sealant around exterior face of glass block completely filling channel.� Tool sealant flush with surface.
��� F.� Apply sealant to corner caps.
3.3 CLEANING
��� A.� Clean exposed surfaces of aluminum grid with clean, soft cloth and mild hand soap using gentle rubbing action.� Do not use abrasive or solvent type cleaners, detergents, or paint removers.
��� B.� Remove labels from glass block and clean with soft cloth and water.
3.4 PROTECTION
��� A.� After installation, protect installed work from damage caused by subsequent operations at project site.
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