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Design Handbook: Section 5
Architectural Specifications

Manufactured Copper Roofing Specialties

THIS SECTION USES THE TERM "ARCHITECT." CHANGE THIS TERM AS NECESSARY TO MATCH THE ACTUAL TERM USED TO IDENTIFY DESIGN PROFESSIONAL AS DEFINED IN THE GENERAL AND SUPPLEMENTARY CONDITIONS.

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

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

1.2 SUMMARY

EDIT EXAMPLES BELOW BY DELETING ITEMS NOT REQUIRED, ADDING OTHERS, OR REVISING TEXT TO CLARIFY DESCRIPTIONS.

  1. This Section covers copper roofing specialties and accessories of standard manufactured components. It includes accessories installed on and in roofing other than mechanical and structural items, such as:

    1. Factory-manufactured curbset wall flashing and expansion joints.

    2. Factory-manufactured gutters and downspouts (rain drainage).

    3. Factory-manufactured miscellaneous sheet copper trim and accessories.

    FOLLOWING ARE EXAMPLES OF SEVERAL POSSIBLE CROSS REFERENCES WHICH MAY BE NECESSARY TO CLARIFY WHAT WORK IS SPECIFIED WHERE.

  2. Integral masonry flashings are specified as masonry work in sections of Division-4.

  3. Roofing flashing and trim installed integral with roofing membrane are specified in roofing system sections as roofing work.

  4. Coordinate installation with mechanical equipment specified in Division-15.

1.3 SUBMITTALS

  1. General: Submit the following in accordance with Conditions of Contract and Division-1 Specification Sections.

  2. Product data, Specialties, and Accessories: Manufacturer's technical product data, installation instructions and general recommendations for each specified sheet material and fabricated product.

    RETAIN ABOVE AND INSERT SPECIFIC DATA SUBMITTALS AS DESIRED.

  3. Samples of the following items:

    1. 6" or 12" square samples of specified sheet materials to be exposed as finished surfaces.

      DELETE ABOVE AND BELOW IF NO CONTROL REQUIRED ON SHEET MATERIALS. DELETE BELOW IF VISUAL CONTROL OF TRIM UNITS, GUTTERS, DOWNSPOUTS, EXPANSION JOINT UNITS, ETC. IS NOT DESIRED.

    2. 6" or 12" long samples of factory-fabricated products exposed as finished work. Provide complete with specified factory finish.

    DELETE BELOW IF NONE OF WORK SUFFICIENTLY COMPLEX TO JUSTIFY SHOP DRAWINGS; EDIT TO DELETE NONAPPLICABLE UNITS. POSSIBLY INSERT PRODUCT-HANDLING ARTICLE WHERE SUBSTANTIAL VOLUME OF HIGHLY FINISHED WORK IS REQUIRED.

  4. Shop drawings showing layout, profiles, methods of joining, and anchorage details, including major trim, gutters, downspouts, and expansion joint systems. Provide layouts at 1/4" scale and details at 3" scale.

POSSIBLY INSERT QUALITY ASSURANCE ARTICLE HERE FOR LIMITATIONS ON FABRICATORS OR INSTALLERS OF COMPLEX SYSTEMS OF FLASHING, RAIN DRAINAGE, EXPANSION JOINTS, ETC.

1.4 PROJECT CONDITIONS

  1. Coordinate work of this section with interfacing and adjoining work for proper sequencing of each installation. Ensure best possible weather resistance and durability of work and protection of materials and finishes.

POSSIBLY INSERT HERE SPECIAL PROJECT WARRANTY REQUIREMENTS FOR EXTENSIVE/ ELABORATE (ESPECIALLY PREFAB) SYSTEMS.

PART 2 – PRODUCTS

2.1 MATERIALS

  1. Copper: ASTM B 370; temper H00 (cold-rolled) except where temper 060 is required for forming; 16 oz. (0.0216-inch thick) except as otherwise indicated.

    DELETE BELOW IF LEAD COATING NOT REQUIRED (DESIRED).

    1. Provide lead coating per ASTM B101 on exposed copper surfaces.

2.2 MISCELLANEOUS MATERIALS AND ACCESSORIES:

EDIT PARAGRAPHS BELOW AS REQUIRED FOR JOB REQUIREMENTS.

  1. Insulation: Manufacturer's standard rigid or semi-rigid board of glass fiber of thicknesses indicated.

    REVISE ABOVE IF CELLULAR PLASTIC OR OTHER TYPES DESIRED.

  2. Wood Nailers: Softwood lumber, pressure treated with water-borne preservatives for above-ground use, complying with AWPB LP-2; not less than 1-1/2" thick.

  3. Solder: Provide 50 - 50 tin/lead solder (ASTM B 32), with rosin flux.

  4. Fasteners: Same metal as flashing/sheet metal or other non-corrosive metal as recommended by sheet manufacturer. Match finish of exposed heads with material being fastened.

  5. Bituminous Coating: SSPC - Paint 12, solvent-type bituminous mastic, nominally free of sulfur, compounded for 15-mil dry film thickness per coat.

  6. Mastic Sealant: Polyisobutylene; nonhardening, nonskinning, non-drying, nonmigrating sealant.

    POSSIBLY INSERT SPECIFIC PERFORMANCE REQUIREMENTS BELOW OR ACCEPTABLE PRODUCT LISTING FOR CRUCIAL APPLICATIONS OF SEALANTS. (COORDINATE WITH DIV-7 SECTION "JOINT SEALERS.")

  7. Elastomeric Sealant: Generic type recommended by manufacturer of copper and fabricator of components being sealed and complying with requirements for joint sealants as specified in Division-7 Section "Joint Sealers."

  8. Epoxy Seam Sealer: 2-part noncorrosive metal seam cementing compound, recommended by copper manufacturer for nonmoving joints including riveted joints.

  9. Sheet Copper Accessories: Provide sheet copper clips, straps, anchoring devices, and similar accessory units as required for installation of work, matching or compatible with material being installed, noncorrosive, size and gauge required for performance.

  10. Gutter and Conductor-Head Guards: 20-gauge bronze mesh or fabricated units, with selvaged edges and noncorrosive fasteners. Select materials for compatibility with gutters and downspouts.

  11. Roofing Cement: ASTM D 2822, asphaltic.

INSERT OTHER MATERIALS AS REQUIRED FOR PROJECT.

2.3 FABRICATED UNITS

  1. General Sheet Copper Fabrication: Provide materials of standard factory fabrication to greatest extent possible. Comply with details shown and with applicable requirements of CDA "Copper in Architecture Handbook" and other recognized industry practices. Fabricate for waterproof and weather-resistant performance, with expansion provisions for running work, sufficient to permanently prevent leakage, damage, or deterioration of the work. Form work to fit substrates. Comply with material manufacturer instructions and recommendations for forming material. Form exposed sheet copper work without excessive oil-canning, buckling, and tool marks, true to line and levels indicated, with exposed edges folded back to form hems.

  2. Seams: Fabricate nonmoving seams in sheet copper with flat-lock seams. Tin edges to be seamed, form seams, and solder. Rivet joints for additional strength where required.

  3. Expansion Provisions: Where lapped or bayonet-type expansion provisions in work cannot be used or would not be sufficiently water/weatherproof, form expansion joints of intermeshing hooked flanges, not less than 1 inch deep, filled with mastic sealant (concealed within joints).

  4. Sealant Joints: Where movable, nonexpansion type joints are indicated or required for proper performance of work, form copper to provide for proper installation of elastomeric sealant, in compliance with CDA standard details.

    INSERT SPECIFIC LISTING (BELOW) OF SEPARATIONS KNOWN TO BE REQUIRED FOR WORK AS DETAILED. ATTEMPT SHOULD BE MADE (IN DETAILING AND SELECTING MATERIALS) TO AVOID THIS NEED.

  5. Separations: Provide for separation of metal from noncompatible metal or corrosive substrates by coating concealed surfaces at locations of contact, with bituminous coating or other permanent separation as recommended by manufacturer/fabricator.

2.4 ELASTIC EXPANSION JOINTS

  1. General: Provide factory-fabricated units of size and profile indicated, complete with prefabricated corner units, intersection units, and splicing materials. Provide complete with elastic sheet flashing forming the primary joint membrane in a supported, "bellows" arrangement designed for securement to both sides of expansion joints. Underside of bellows insulated with adhesively applied, flexible, closed-cell rubber or plastic not less than 3/8-inch thick.

  2. Type: Plain sheet or encapsulated copper flanged edges, for embedment in other construction or nailing to substrates, 4-inches minimum flange width.

    USUALLY DELETE EITHER ABOVE OR BELOW.

  3. Type: Copper flanged edges, 3" to 4" wide, formed to profiles as indicated to fit curbs and designed for nailing to curb substrate. Provide 16 oz. copper flanges.

  4. Looped Bellows Width: 5" to 6", exclusive of flanges.

  5. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated in the Work include, but are not limited to, the following:

    RETAIN ABOVE FOR NONPROPRIETARY OR BELOW FOR SEMIPROPRIETARY SPECIFICATION REFER TO DIVISION-1 SECTION "MATERIAL AND EQUIPMENT."

  6. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

    1. Afco Products, Inc.

    2. Celotex Corporation

    3. International Permalite/Roofing Components Group.

    4. Manville/Roofing Systems Division.

    5. Phoenix Building Products, Inc.

    6. York Manufacturing, Inc.

PART 3 – EXECUTION

3.1 INSTALLATION REQUIREMENTS

  1. General: Except as otherwise indicated, comply with manufacturer's installation instructions and recommendations and with CDA "Copper in Architecture Handbook". Anchor units of work securely in place by methods indicated, providing for thermal expansion of copper units; conceal fasteners where possible, and set units true to line and level as indicated. Install work with laps, joints, and seams that will be permanently watertight and weatherproof.

  2. Underlayment: Where units are to be installed directly on cementitious or wood substrates, install a slip sheet of red rosin paper on a course of asphalt saturated felt.

  3. Bed flanges of work in a thick coat of bituminous roofing cement where required for waterproof performance.

  4. Nail flanges of expansion joint units to curb nailers, at maximum spacing of 6" O.C. Fabricate seams at joints between units with minimum 3" overlap, to form a continuous, waterproof system.

    DELETE ABOVE OR BELOW.

  5. Anchor expansion joint units in manner indicated, complying with manufacturer's instructions. Provide not less than four-inch embedment or elastic sheets in bituminous membranes, with hot bitumen or with roofing cement. Cover with composition stripping as specified for membrane work.

  6. Install continuous gutter guards on gutters, arranged as hinged units to swing open for cleaning gutters. Install "beehive"-type strainer-guard at conductor heads, removable for cleaning downspouts.

INSERT OTHER SPECIFIC INSTALLATION REQUIREMENTS FOR OTHER SYSTEMS AND SHEET COPPER ACCESSORY ITEMS OR FINISH SYSTEMS SPECIFIED AS WORK OF THIS SECTION.

3.2 CLEANING AND PROTECTION

  1. Clean exposed copper surfaces, removing substances that might cause corrosion of copper or deterioration of finishes.

  2. Protection: Advise Contractor of required procedures for surveillance and protection of flashings and sheet copper work during construction to ensure that work will be without damage or deterioration other than natural weathering at time of Substantial Completion.

Architecture Design Handbook

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Notice: This Handbook has been prepared for the use of architects and other design and construction professionals. It has been compiled from information supplied by testing, research, manufacturing, standards, and consulting organizations that Copper Development Association Inc. believes to be competent sources for such data. However, recognizing that each system must be designed to meet the particular circumstances, CDA assumes no responsibility or liability of any kind in connection with this Handbook or its use by any person or organization, and makes no representations or warranties of any kind hereby.