Chrysler LLC Construction Standards

12/17/04

MASTERSPEC Short Form Copyright 2002, The American Institute of Architects (AIA)

SECTION 07720 - ROOF ACCESSORIES

Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.

PART 1 - GENERAL

1.1  SUMMARY

  1. This Section includes the following:

Adjust list below to suit Project.

  1. Roof curbs not furnished by mechanical trades.

1.2  QUALITY ASSURANCE

  1. Sheet Metal Standard: Comply with SMACNA's "Architectural Sheet Metal Manual" details for fabrication of units, including flanges and cap flashing to coordinate with type of roofing indicated.

PART 2 - PRODUCTS

2.1  MANUFACTURERS

  1. Manufacturers: Subject to compliance with requirements, provide products by one of the manufacturers listed in other Part2 articles.

2.2  METAL MATERIALS

Retain paragraph below for galvanized steel sheet that will remain exposed and unpainted. Retain option if roof accessory is available with galvanized surfaces phosphatized for field painting.

  1. Galvanized Steel Sheet: ASTMA653/A653M, G90 coated.

Retain first paragraph and subparagraphs below if metallic-coated steel sheet will be prepainted with a high-performance fluoropolymer finish.

2.3  ROOF CURBS

  1. Roof Curbs: Provide metal roof curbs, internally reinforced and capable of supporting superimposed live and dead loads, including appropriate loads and other construction to be supported on roof curbs. Fabricate with welded or sealed mechanical corner joints, and integral formed mounting flange at perimeter bottom. Coordinate dimensions with rough-in information or Shop Drawings of equipment to be supported.
  2. Manufacturers:
  3. Colony Custom Curbs.
  4. Commodity Products Company, Inc.
  5. Conn-Fab Sales, Inc.
  6. Curbs Plus Inc.
  7. Custom Curb, Inc.
  8. LM Curbs.
  9. Loren Cook Company.
  10. Metallic Products Corporation.
  11. Pate Company (The).
  12. Roof Products & Systems Corporation.
  13. Roof Products, Inc.
  14. Thaler Metal Industries Ltd.
  15. ThyCurb; Div. of Thybar Corporation.
  16. Uni-Curb, Inc.
  17. Vent Products Company, Inc.
  18. Material: Galvanized steel sheet, 0.052 inch thick, unless otherwise indicated.

Finishes in subparagraph below can be used on aluminum and metallic-coated steel.

Delete subparagraph below if interior metal liner is not required for factory-insulated roof curbs.

  1. Liner: Same material as curb, of manufacturer's standard thickness and finish.

Delete one or both subparagraphs below if not applicable. Add other features such as security grilles or cap or counterflashing if required.

  1. Factory install wood nailers at tops of curbs. Configure to accommodate field installed insulation

Retain first subparagraph below if roof curb is a continuous four-sided unit that needs to maintain the thermal integrity of low-slope roofing membrane installation.

  1. Curb height may be determined by adding thickness of roof insulation and minimum base flashing height recommended by roofing membrane manufacturer. Fabricate units to minimum height of 16 inches from top of deck, unless otherwise indicated.

PART 3 - EXECUTION

3.1  INSTALLATION

  1. General: Install roof accessories according to manufacturer's written instructions. Anchor roof accessories securely in place and capable of resisting forces specified. Use fasteners, separators, sealants, and other miscellaneous items as required for completing roof accessory installation. Install roof accessories to resist exposure to weather without failing, rattling, leaking, and fastener disengagement.
  2. Install roof accessories to fit substrates and to result in watertight performance.
  3. Install roof accessories level, plumb, true to line and elevation, and without warping, jogs in alignment, excessive oil canning, buckling, or tool marks.
  4. Seal joints with butyl sealant as required by manufacturer of roof accessories.

END OF SECTION

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