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	SECTION 07612
	SHEET COPPER ROOFING
	Copyright 2011 ARCAT, Inc. - All rights reserved
	** NOTE TO SPECIFIER ** Copper Development Association (CDA), copper and lead-covered sheet copper roofing including flat seam, standing seam, batten seam, and horizontal seam (Bermuda style) systems. . This section is based on the recommendations of the Copper Development Association (CDA), which is located at: 260 Madison Avenue New York, New York 10016 Tel: (212) 251-7200 Fax: (212) 251-7234 Email: questions@cda.copper.org www.copper.org [ Click Here ] for additional information. Information in this section is provided by the Copper Development Association (CDA), the central authoritative source of technical data on the design specification and installation of architectural copper products. With capabilities for providing seminars, technical publications, design assistance and review, CDA can be an invaluable resource to the architect specifying any architectural copper products or applications.
	PART 1	GENERAL
	1.1	SECTION INCLUDES
	** NOTE TO SPECIFIER ** Delete items below not required for project.
		A.	Flat-seam copper roofing.
		B.	Standing-seam copper roofing.
		C.	Batten-seam copper roofing.
		D.	Horizontal-seam (Bermuda type) copper roofing.
		E.	Custom-designed copper roofing.
	1.2	RELATED SECTIONS
	** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
		A.	Section 05120 - Structural Steel: Roof framing.
		B.	Section 06100 - Rough Carpentry: Wood framing and decking.
		C.	Section 07220 - Thermal Insulation: Roof insulation.
		D.	Section 07622 - Copper Flashing and Trim: Flashing and other trim not part of roofing.
	** NOTE TO SPECIFIER ** The following paragraph above may be edited to identify specific items such as reglets, relief vents, roof expansion assemblies, ornamental items, etc.
		E.	Section 07712 - Copper Roof Specialties: Accessories on roof other than mechanical and structural items.
		F.	Section 07900 - Joint Sealers: Field-applied panel sealants.
		G.	Section 09900 - Paints and Coatings: Copper roofing finishes.
	1.3	REFERENCES
	** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
		A.	ASTM E 84 - Title; 2001.
		B.	ASCE 7 - Minimum Design Loads for Buildings and Other Structures.
		C.	ASTM B 32 - Standard Specification for Solder Metal.
		D.	ASTM B 101 - Standard Specification for Lead-Coated Copper Sheet and Strip for Building Construction.
		E.	ASTM B 370 - Standard Specification for Copper Sheet and Strip for Building Construction.
		F.	UL 580 - Tests for Uplift Resistance of Roof Assemblies.
		G.	CDA A4050 - Copper in Architecture Handbook; Copper Development Association.
	** NOTE TO SPECIFIER ** Delete the following paragraph if not required.
	1.4	PERFORMANCE REQUIREMENTS
		A.	Design roof assembly to conform to the requirements of ASCE 7, Minimum Design Loads for Buildings.
	1.5	SUBMITTALS
		A.	Submit under provisions of Section 01300.
		B.	[ Product Data ]: Manufacturer's data sheets on each product to be used, including:
			1.	Preparation instructions and recommendations.
			2.	Storage and handling requirements and recommendations.
			3.	Installation methods.
	** NOTE TO SPECIFIER ** Delete paragraph below if details are of no importance or are adequately covered by project Drawings.Shop Drawings: Show manner of forming, joining, and securing copper roofing, and pattern of seams. Show expansion joint details and waterproof connections to adjoining work and at obstructions and penetrations.
	** NOTE TO SPECIFIER ** Delete paragraphs below if work is concealed or if appearance is unimportant. Delete Selection Samples paragraph if colors have already been selected.
		C.	Selection Samples: For each finish product specified, two complete sets of 6 inch square samples representing manufacturer's full range of available colors and patterns.
		D.	Verification Samples: For each finish product specified, two samples, minimum size 6 inches (150 mm) square, representing actual product, color, and patterns.
	1.6	QUALITY ASSURANCE
		A.	Manufacturer Qualifications:
		B.	Installer Qualifications: A firm with 3 years of successful experience with installation of copper roofing of type and scope equivalent to project requirements.
		C.	Industry Standards: Except as otherwise shown or specified, comply with applicable recommendations and details of CDA A4050, "Copper in Architecture Handbook" by Copper Development Association (CDA). Conform to dimensions and profiles indicated.
	** NOTE TO SPECIFIER ** Delete paragraph below if UL Class 90 roof not required, or modify if FM Class I-90 or I-60 required.
		D.	Wind Uplift: Provide roof assemblies meeting requirements of UL 580 for Class 90 wind uplift resistance.
	** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
		E.	Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
			1.	Finish areas designated by Architect.
			2.	Do not proceed with remaining work until workmanship, and color are approved by Architect.
			3.	Refinish mock-up as required to produce acceptable work.
			4.	Retain accepted mock-up as quality standard for acceptance of completed copper roofing. If accepted, mock-up may be incorporated as part of copper roofing work.
	1.7	DELIVERY, STORAGE, AND HANDLING
		A.	Store products in manufacturer's unopened packaging until ready for installation.
	1.8	PROJECT CONDITIONS
		A.	Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.
	PART 2	PRODUCTS
	2.1	MANUFACTURERS
	** NOTE TO SPECIFIER ** Names listed below are examples only. Retain or insert only those manufacturers whose materials correspond with other requirements and whose availability and suitability for project application have been verified.
		A.	Acceptable Manufacturers:
			1.	Revere Copper Products, Inc; One Revere Park, Rome, NY 13440-5561. ASD. Te1: (315) 338-2022.(800) 448-1776. Fax: (315) 338-2224. www.reverecopper.com.
			2.	Hussey Copper, Ltd; 100 Washington Street, Leetsdale, PA 15056-1099. ASD. Tel: (724) 266-8430 (800) 733-8866. Fax (724) 251-4243. www.husseycopper.com.
			3.	Outokumpu American Brass Company; 70 Sayre Street, P.O. Box 981, NY 14240-0981. ASD. Tel. (716) 879 6836. (800) 828-7426. Fax: (716) 879-6735 www.outokumpu.com.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
		B.	Substitutions: Not permitted.
		C.	Requests for substitutions will be considered in accordance with provisions of Section 01600.
	2.2	MATERIALS
		A.	Copper Roofing Sheets: Cold-rolled copper sheet complying with ASTM B 370 temper designation, H00, unless otherwise indicated, and as follows:
			1.	Weight: 16 oz. per sq. ft. unless otherwise indicated
	** NOTE TO SPECIFIER ** Delete paragraph above or below as appropriate. Refer to manufacturers' literature for selection of thickness appropriate to application indicated.
			2.	Weight: 20 oz. per sq. ft. unless otherwise indicated.
	** NOTE TO SPECIFIER ** Retain paragraph below for batten roofing.
		B.	Batten Caps: 20 oz. per sq. ft. copper unless otherwise indicated.
	** NOTE TO SPECIFIER ** Retain paragraph below for lead-coated copper.
		C.	Lead-Coated Copper Roofing Sheets: Lead-coated copper sheet complying with ASTM B 101, temper designation H00, consisting of cold-rolled copper sheet coated both sides with lead weighing not less than 12 lbs. nor more than 15 lbs. per 100 sq. ft. of copper sheet (one half of total weight of lead applied each side), and as follows:
	** NOTE TO SPECIFIER ** Delete one of the following 2 paragraphs. Refer to reference materials; modify if other than Class A used.
			1.	Weight of Coated Sheet: Not less than 17.1 oz. per sq. ft. (nominal weight of bare copper sheet, 16 oz.), unless otherwise indicated.
			2.	Weight of Coated Sheet: Not less than 21.2 oz. per sq. ft. (nominal weight of uncoated copper sheet, 20 oz. per sq. ft.) unless otherwise indicated.
	** NOTE TO SPECIFIER ** Retain below for batten roofing.
		D.	Batten Caps: 21.2 oz. per sq. ft. lead-coated copper unless otherwise indicated.
		E.	Miscellaneous Materials: Provide materials and types of fasteners, solder, welding rods, protective coatings, separators, sealants and accessory items as recommended by copper sheet manufacturer and fabricator for copper roofing work, except as otherwise indicated.
	** NOTE TO SPECIFIER ** Delete paragraph below if joints described are not required.
		F.	Expansion Joint Sealant: For hooked-type expansion joints, which must be free to move, provide nonsetting, nonhardening, nonmigrating, heavy-bodied polyisobutylene mastic sealant.
	** NOTE TO SPECIFIER ** Retain paragraph below for copper and lead coated copper installed on underlayment sheet.
		G.	Paper Slip Sheet: Minimum 4-lb. per square rosin-sized building paper.
	** NOTE TO SPECIFIER ** Revise following paragraph with specific requirements where desired for project.
		H.	Accessories: Except as indicated as work of another specification section, provide components required for a complete roof system, including trim, copings, fascias, ridge closures, clips, seam covers, battens, flashings, gutters, louvers, sealants, gaskets, and closure strips. Match materials and finishes of roof.
			1.	Sealing Tape: Pressure-sensitive 100 percent solids polyisobutylene compound sealing tape with release paper backing. Provide permanently elastic, nonsag, nontoxic, nonstaining tape.
			2.	Joint Sealant: One-part elastomeric polyurethane, polysulfide, butyl, or silicone rubber sealant as recommended by the building manufacturer.
		I.	Bituminous Coating: Cold-applied asphalt mastic, SSPC-Paint 12, compounded for 15-mil dry film thickness per coat, except as otherwise indicated. Provide inert-type noncorrosive compound, nominally free of sulfur components and other deleterious impurities.
	** NOTE TO SPECIFIER ** Delete following paragraph if alternative underlayment is used.
		J.	Roofing Felt: Asphalt or coal tar saturated felt weighing not less than 30 lbs per 100 square feet.
		K.	Fabric Underlayment: Manufacturer's standard nonwoven polyester fabric marketed for use in cold-applied single ply roof systems, weighing 6.0 oz. per sq. yd., white, nonswelling, rot and mildew resistant.
			1.	Product: E-6-N Rufon Fabric; Phillips Fibers Corp.
	** NOTE TO SPECIFIER ** Retain paragraph below if battens are intended as part of roofing work.
		L.	Batten Bars and Strips: If size is not indicated, provide battens of nominal 2 inch by 2 inch size (1-1/2 inch by 1-1/2 inch minimum).
			1.	Copper Batten Bars: 20-ounce cold-rolled copper.
	** NOTE TO SPECIFIER ** Delete if no batten-type roofing requiring wood strips or if battens are to be specified as part of Division 6 carpentry work.
			2.	Wood Batten Strips: Fabricated to size indicated from lumber complying with requirements of Section 06100 - Rough Carpentry and preservative treated by pressure process using a chemical solution that is nonhygroscopic and noncorrosive to type of copper roofing.
	** NOTE TO SPECIFIER ** Insert other materials as needed for roofing work (elastomeric sealants, insulation, solder, reglets, gaskets, etc.)
		M.	Nails: Copper, bronze or stainless steel (alloy 304/316) 0.109 inch minimum not less than 7/8 inch long barbed with large head.
		N.	Screws and Bolts: Copper, bronze, brass or stainless steel (alloy 304/316).
		O.	Cleats: 16 ounce cold rolled copper; 2 inches wide x 3 inches long.
		P.	Solder: ASTM Specification B 32, Composition 50/50 tin/lead; 60/40 tin/lead for lead-coated copper.
		Q.	Flux: Muriatic acid neutralized with zinc or approved brand of soldering flux.
	2.3	SHOP FABRICATION
		A.	General: Shop fabricate work to greatest extent possible. Comply with details shown and with applicable requirements of CDA "Copper in Architecture Handbook" and other recognized industry practices. Form work to fit substrate. Comply with material manufacturer's instructions and recommendations for forming material.
		B.	Fabricate for waterproof and weather-resistant performance with expansion provisions for running work, sufficient to permanently prevent leakage, damage, or deterioration of the work.
		C.	Form exposed copper work without excessive oil-canning, buckling, and tool marks, true to line and levels indicated, with exposed edges folded back to form hems.
		D.	Seams: Fabricate nonmoving seams in copper sheet with flat-lock seams. Tin edges to be seamed, form seams, and solder. Rivet joints for additional strength where indicated.
		E.	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 (25 mm) deep, filled with mastic sealant (concealed within joints).
		F.	Sealant Joints: Where movable, non-expansion-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 standards.
		G.	Separations: Provide for separation of copper from noncompatible metal or corrosive substrate by coating concealed surfaces at locations of contact, with bituminous coating or other permanent separation as recommended by manufacturer/fabricator.
	PART 3	EXECUTION
	** NOTE TO SPECIFIER ** Delete any of the following paragraphs that are not applicable to the project or the type of roofing required.
	3.1	COORDINATION
		A.	Coordinate copper roofing with rain drainage, flashing, trim and construction of decks, parapets, walls, and other adjoining work to provide a permanently leakproof, secure, and noncorrosive installation.
	3.2	EXAMINATION
		A.	Do not begin installation until substrates have been properly prepared for the work of this Section.
		B.	If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
	3.3	PREPARATION
		A.	Clean surfaces thoroughly prior to installation. Substrate to be smooth and free of defects. Drive all projecting nails or other fasteners flush with substrate.
		B.	Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
	3.4	INSTALLATION
		A.	Install in accordance with copper material manufacturer's instructions and applicable requirements of CDA "Copper in Architecture Handbook" and other recognized industry practices.
		B.	Separate dissimilar metals by painting each metal surface in area of contact with a bituminous coating, by applying rubberized asphalt underlayment to each metal surface, or by other permanent separation as recommended by manufacturers of dissimilar metals.
	** NOTE TO SPECIFIER ** Most substrate conditions require underlayment and slip sheets. Delete below only upon recommendation of metal manufacturer for specific project conditions.
		C.	Install underlayment and paper slip sheet on substrate under copper roofing to greatest extent possible unless otherwise recommended by manufacturer of sheet metal. Paper slip sheets must be installed over the underlayment. Use adhesive for temporary anchorage, where possible, to minimize use of mechanical fasteners under copper roofing. Lap joints 2 inches minimum.
		D.	Form and fabricate sheets, seams, strips, cleats, valleys, ridges, edge treatments, integral flashings and other components of copper roofing to profiles, patterns and drainage arrangements shown and as required for permanently leakproof construction. Provide for thermal expansion and contraction of the work, as indicated. Seal joints as shown and as required for leakproof construction. Shop-fabricate materials to greatest extent possible.
		E.	Sealant-Type Joints: Where sealant-filled joints are used, embed hooked flanges of joint members not less than 1 in. into sealant. Form joints to conceal sealant completely. When ambient temperature is moderate at time of installation, 40 degrees to 70 degrees F (4 degrees to 21 degrees C), set joint members for 50 percent movement either way. Adjust setting proportionately for installation at higher ambient temperatures. Do not install sealant-type joints at temperatures below 40 degrees F (4 degrees C). Comply with requirements of Section 07900 for handling and installing sealants.
		F.	Fabricate and install work with lines and corners of exposed units true and accurate. Form exposed faces flat and free of buckles, excessive waves, and avoidable tool marks considering temper and reflectivity of metal. Provide uniform, neat seams with minimum exposure of solder, welds, and sealant. Except as otherwise shown, fold back sheet metal to form a hem on concealed side of exposed edges.
		G.	Conceal fasteners and expansion provisions where possible in exposed work, and locate so as to minimize possibility of leakage. Cover and seal fasteners and anchors as required for a tight installation.
		H.	Tin copper surfaces at edges of sheets, including lead coated copper, to be soldered, for a width of 1-1/2 inches, using solder recommended for copper work.
	** NOTE TO SPECIFIER ** Delete provisions below if copper will be allowed to weather naturally.
	3.5	FINISHING
	** NOTE TO SPECIFIER ** Review paint selection with coatings manufacturer.
		A.	To retard natural weathering, apply a uniform coating of high grade paraffin oil or a clear organic lacquer coating per manufacturers' instructions.
	3.6	CLEANING
		A.	Remove protective film (if any) from exposed surfaces of copper roofing promptly upon installation. Strip with care to avoid damage to finishes.
		B.	Clean exposed metal surfaces of substances that would interfere with uniform oxidation and weathering.
	3.7	PROTECTION
		A.	Protect installed products until completion of project.
		B.	Touch-up, repair or replace damaged products before Substantial Completion.
	END OF SECTION