Manufactured Roof Expansion Joints ME- Building Group

SECTION 077129 – MANUFACTURED ROOF EXPANSION JOINTS

PART 1 - GENERAL

1.1  RELATED DOCUMENTS

  1. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2  SUMMARY

  1. This Section includes the following:
  2. Metal-flanged, bellows-type roof expansion joint assemblies.
  3. Compressible tube type expansion joint assemblies.
  4. Related Sections include the following:
  5. Division6 Section "Miscellaneous Rough Carpentry" for wooden curbs for mounting roof expansion assemblies.

1.3  PERFORMANCE REQUIREMENTS

  1. General: Provide roof expansion joint assemblies that, when installed, remain watertight within movement limitations specified by manufacturer.

1.4  SUBMITTALS

  1. Product Data: Include manufacturer's product specifications, construction details, material and finish descriptions, installation instructions, and dimensions of individual components.
  2. Shop Drawings: Include plans, elevations, sections, details, joints, splices, locations of joints and splices, anchorage details, intersections, transitions, fittings, and attachments to other Work. Where joint assemblies change planes, provide isometric drawings depicting how components interconnect to achieve continuity.

1.5  QUALITY ASSURANCE

Delete paragraph below if not retaining metal-flanged, bellows-type roof expansion joint assemblies in this Section Text. Manufacturers of roofing membranes that produce roof expansion joints generally require use of their own roof expansion joints for roofs under warranty. Coordinate with roofing membrane warranty in applicable Division7 Section.

  1. Source Limitations: Obtain metal-flanged, bellows-type roof expansion joint assemblies approved by roofing membrane manufacturer and that are part of roofing membrane warranty.

1.6  SCHEDULING

  1. Coordinate delivery and installation of expansion joint assemblies to prevent damage and provide timely integration of units with roofing membranes and flashing.

1.7  WARRANTY

When warranties are required, verify with Owner's counsel that special warranties stated in this Article are not less than remedies available to Owner under prevailing local laws. Coordinate with Division1 Section "Warranties."

  1. General Warranty: Special warranty specified in this Article shall not deprive Owner of other rights Owner may have under other provisions of the Contract Documents and shall be in addition to, and run concurrent with, other warranties made by Contractor under requirements of the Contract Documents.
  2. Special Warranty: Written warranty, signed by roof expansion assembly manufacturer and Installer agreeing to repair or replace roof expansion assemblies that leak, deteriorate in excess of rates specified in manufacturer's published product literature, or otherwise fail to perform within specified warranty period.

Verify available warranties on units and components and insert number below. Many published warranty periods do not exceed two years.

  1. Warranty Period: 15 years after date of Substantial Completion.

PART 2 - PRODUCTS

2.1  PRODUCTS AND MANUFACTURERS

  1. Metal-Flanged, Bellows-Type Roof Expansion Joint Assemblies: Provide one of the following:
  2. TSeries Roof Expansion Cover; Architectural Art Manufacturing, Inc.
  3. Roof Bellows Type BRB-CN (R-R) or BRB-CSN (R-W); Balco Metalines, a division of Balco, Inc.
  4. Expand-O-Flash Style CF or CF-EJ; Johns Manville Corporation.
  5. Series ERF or ERFL; MM Systems Corporation.

2.2  SHEET METALS

  1. Galvanized Steel Sheet: ASTMA653/A653M, hot-dip zinc-coating designation G90, stretcher-leveled standard of flatness and either commercial steel or forming steel, minimum 0.019 inch thick.

2.3  MISCELLANEOUS MATERIALS

  1. Roof Cement: ASTMD4586, TypeII.
  2. Mineral-Fiber Blanket: ASTMC665.
  3. Flexible Cellular Sponge or Expanded Rubber: ASTMD1056.

2.4  BELLOWS-TYPE ROOF EXPANSION JOINT ASSEMBLIES

  1. General: Provide manufacturer's standard assemblies of sizes and types indicated, including prefabricated units for corner and joint intersections and horizontal and vertical transitions including those to other building expansion joints, splicing units, adhesives, coatings, and other components as recommended by joint unit manufacturer for complete installation. Fabricate assemblies specifically for applications indicated.
  2. Metal-Flanged, Bellows-Type Roof Expansion Assemblies: Provide assemblies consisting of exposed polymeric sheet over foam bellows, securely anchored at both edges to 3- to 4-inch-wide sheet metal nailing flanges, either flat or angle formed to fit curbs as required. Insulate bellows with closed-cell, flexible rubber or plastic foam not less than 5/16 inch thick; adhere bellows to underside of polymeric sheet.
  3. Polymeric Sheet: EPDM, 60 mils thick.
  4. Metal Flanges: Zinc-coated (galvanized) steel, minimum 0.019 inch thick.
  5. Moisture Barrier: Manufacturer's standard, flexible, continuous, polymeric moisture barrier looped under roof expansion assembly covers at locations indicated. Fill space with blanket-type, glass-fiber insulation.

2.5  COMPRESSIBLE TUBE TYPE ROOF EXPANSION JOINT ASSEMBLIES

  1. Provide of material and type that are nonstaining; are compatible with joint substrates, proved for roofing applications indicated as recommended by the roofing membrane manufacturer based on the following:
  2. Plastic Foam Joint Fillers: Preformed, compressible, resilient, nonstaining, nonwaxing, nonextruding strips of closed-cell polyethylene foam, nonabsorbent to liquid water and gas, nonoutgassing in unruptured state and of size, shape, and density to control sealant depth and otherwise contribute to producing optimum sealant performance:
  3. Elastomeric Tubing Joint Fillers: Neoprene, butyl, or EPDM tubing complying with ASTMD1056, nonabsorbent to water and gas, capable of remaining resilient at temperatures down to -26 deg F. Provide products with low compression set and of size and shape to provide a secondary seal, to control sealant depth, and otherwise contribute to optimum sealant performance.

PART 3 - EXECUTION

3.1  INSTALLATION

  1. Comply with manufacturer's written instructions for handling and installing roof expansion assemblies and materials, unless more stringent requirements are indicated.
  2. Coordinate installation of roof expansion joint assembly materials and associated work so complete assemblies comply with assembly performance requirements.
  3. Extend roof expansion joint assemblies over the elements in the construction profile indicated, with factory-fabricated transitions to provide continuous, uninterrupted, waterproof roof expansion assemblies.
  4. Splice roof expansion joint assemblies with materials provided by roof expansion assembly manufacturer for this purpose, according to manufacturer's written instructions, to provide continuous, uninterrupted, waterproof roof expansion assemblies.
  5. Provide uniform profile of expansion joint assembly throughout length of each installation; do not stretch polymeric sheets.
  6. Bellows-Type Roof Expansion Assemblies
  7. Install mineral-fiber blanket insulation to fill joint space within joint and moisture barrier at locations indicated.
  8. Bed anchorage flanges in cement or sealant recommended by manufacturer and securely nail to curbs and cant strips as recommended by manufacturer, but not less than 6 inches o.c.

Coordinate with roofing-membrane type. Retain below with polymeric single-ply roofing membranes.

  1. On single-ply roofing, install roof expansion joint assemblies in the manner indicated, complying with manufacturer's instructions. Anchor to curbs and seal to membrane with sealant compatible with roofing membrane and expansion joint assembly. Cover flanges with stripping or flashing and install according to requirements of the specified roofing system."
  2. Compressible Tubes: Install to comply with the following requirements:
  3. Install tubes of type specified, appropriate to application and position required to produce the cross-sectional shapes that allow expansion performance of roofing membrane.
  4. Do not leave gaps between ends of compressible tubes.
  5. Do not stretch, twist, puncture, or tear compressible tubes.
  6. Provide uniform profile of expansion joint assembly throughout length of each installation; coordinate with roofing membrane manufacturer.

3.2  PROTECTION

  1. Provide final protection and maintain conditions, in a manner acceptable to manufacturer and Installer, that ensures roof expansion joint assemblies are without damage or deterioration at time of Substantial Completion.

END OF SECTION

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Revision Date: 01/21/14 Project & Bid Package

File name: 077129 MANUFACTURED ROOF EXPANSION JOINTS