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HomeMy WebLinkAbout07 62 00.DOCMATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 07 62 00 - CARMEL CITY CENTER Date 03.26.12 SHEET METAL FLASHING AND TRIM MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 SECTION 07 62 00 - SHEET METAL FLASHING AND TRIM PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Formed roof-drainage sheet metal fabrications. 2. Formed low-slope roof sheet metal fabrications. 3. Formed steep-slope roof sheet metal fabrications. 4. Formed wall sheet metal fabrications. B. Related Requirements: 1. Section 06 10 00 "Rough Carpentry" for wood nailers, curbs, and blocking. 1.3 COORDINATION A. Coordinate sheet metal flashing and trim layout and seams with sizes and locations of penetrations to be flashed, and joints and seams in adjacent materials. B. Coordinate sheet metal flashing and trim installation with adjoining roofing and wall materials, joints, and seams to provide leakproof, secure, and noncorrosive installation. 1.4 PRE-INSTALLATION MEETINGS A. Pre-installation Conference: Conduct conference at Project site. 1. Review construction schedule. Verify availability of materials, Installer's personnel, equipment, and facilities needed to make progress and avoid delays. 2. Review special roof details, roof drainage, roof-penetration flashing, equipment curbs, and condition of other construction that affect sheet metal flashing and trim. 3. Review requirements for insurance and certificates if applicable. 4. Review sheet metal flashing observation and repair procedures after flashing installation. 1.5 ACTION SUBMITTALS A. Product Data: For each type of product. 1. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for each manufactured product and accessory. B. Shop Drawings: For sheet metal flashing and trim. 1. Include plans, elevations, sections, and attachment details. MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 07 62 00 - CARMEL CITY CENTER Date 03.26.12 SHEET METAL FLASHING AND TRIM MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 2. Detail fabrication and installation layouts, expansion-joint locations, and keyed details. Distinguish between shop- and field-assembled work. 3. Include identification of material, thickness, weight, and finish for each item and location in Project. 4. Include details for forming, including profiles, shapes, seams, and dimensions. 5. Include details for joining, supporting, and securing, including layout and spacing of fasteners, cleats, clips, and other attachments. Include pattern of seams. 6. Include details of termination points and assemblies. 7. Include details of expansion joints and expansion-joint covers, including showing direction of expansion and contraction from fixed points. 8. Include details of edge conditions, including eaves, ridges, valleys, rakes, crickets, and counter flashings as applicable. 9. Include details of special conditions. 10. Include details of connections to adjoining work. 11. Detail formed flashing and trim at scale of not less than 1-1/2 inches per 12 inches. C. Samples for Initial Selection: For each type of sheet metal and accessory indicated with factory-applied finishes. D. Samples for Verification: For each type of exposed finish. 1. Sheet Metal Flashing: 12 inches long by actual width of unit, including finished seam and in required profile. Include fasteners, cleats, clips, closures, and other attachments. 2. Trim, Metal Closures, Expansion Joints, Joint Intersections, and Miscellaneous Fabrications: 12 inches long and in required profile. Include fasteners and other exposed accessories. 3. Unit-Type Accessories and Miscellaneous Materials: Full-size Sample. 4. Anodized Aluminum Samples: Samples to show full range to be expected for each color required. 1.6 INFORMATIONAL SUBMITTALS A. Qualification Data: For fabricator. B. Product Certificates: For each type of coping and roof edge flashing that is SPRI ES-1 tested and FM Approvals approved. C. Product Test Reports: For each product, for tests performed by a qualified testing agency. D. Sample Warranty: For special warranty. 1.7 CLOSEOUT SUBMITTALS A. Maintenance Data: For sheet metal flashing and trim, and its accessories, to include in maintenance manuals. 1.8 QUALITY ASSURANCE A. Fabricator Qualifications: Employs skilled workers who custom fabricate sheet metal flashing and trim similar to that required for this Project and whose products have a record of successful in-service performance. MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 07 62 00 - CARMEL CITY CENTER Date 03.26.12 SHEET METAL FLASHING AND TRIM MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 1. For copings and roof edge flashings that are SPRI ES-1 tested and FM Approvals approved, shop shall be listed as able to fabricate required details as tested and approved. B. Mockups: Build mockups, only if requested by architect, to verify selections made under Sample submittals, to demonstrate aesthetic effects, and to set quality standards for fabrication and installation. 1. Approval of mockups does not constitute approval of deviations from the Contract Documents contained in mockups unless Architect specifically approves such deviations in writing. 2. Subject to compliance with requirements, approved mockups may become part of the completed Work if undisturbed at time of Substantial Completion. 1.9 DELIVERY, STORAGE, AND HANDLING A. Do not store sheet metal flashing and trim materials in contact with other materials that might cause staining, denting, or other surface damage. Store sheet metal flashing and trim materials away from uncured concrete and masonry. B. Protect strippable protective covering on sheet metal flashing and trim from exposure to sunlight and high humidity, except to extent necessary for period of sheet metal flashing and trim installation. 1.10 WARRANTY A. Special Warranty on Finishes: Manufacturer agrees to repair finish or replace sheet metal flashing and trim that shows evidence of deterioration of factory-applied finishes within specified warranty period. 1. Exposed Panel Finish: Deterioration includes, but is not limited to, the following: a. Color fading more than 5 Hunter units when tested according to ASTM D 2244. b. Chalking in excess of a No. 8 rating when tested according to ASTM D 4214. c. Cracking, checking, peeling, or failure of paint to adhere to bare metal. 2. Finish Warranty Period: 20 years from date of Substantial Completion. PART 2 - PRODUCTS 2.1 PERFORMANCE REQUIREMENTS A. General: Sheet metal flashing and trim assemblies shall withstand wind loads, structural movement, thermally induced movement, and exposure to weather without failure due to defective manufacture, fabrication, installation, or other defects in construction. Completed sheet metal flashing and trim shall not rattle, leak, or loosen, and shall remain watertight. B. Sheet Metal Standard for Flashing and Trim: Comply with NRCA's "The NRCA Roofing Manual" and SMACNA's "Architectural Sheet Metal Manual" requirements for dimensions and profiles shown unless more stringent requirements are indicated. MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 07 62 00 - CARMEL CITY CENTER Date 03.26.12 SHEET METAL FLASHING AND TRIM MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 C. FM Approvals Listing: Manufacture and install copings and roof edge flashings that are listed in FM Approvals' "RoofNav" and approved for windstorm classification, Class 1-120. Identify materials with name of fabricator and design approved by FM Approvals. D. SPRI Wind Design Standard: Manufacture and install copings and roof edge flashings tested according to SPRI ES-1. E. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes to prevent buckling, opening of joints, overstressing of components, failure of joint sealants, failure of connections, and other detrimental effects. Base calculations on surface temperatures of materials due to both solar heat gain and nighttime-sky heat loss. 1. Temperature Change: 120 deg F, ambient; 180 deg F, material surfaces. 2.2 SHEET METALS A. neral: Protect mechanical and other finishes on exposed surfaces from damage by applying strippable, temporary protective film before shipping. B. Aluminum Sheet: ASTM B 209, alloy as standard with manufacturer for finish required, with temper as required to suit forming operations and performance required; with smooth, flat [embossed] surface. 1. Exposed Coil-Coated Finish: a. Two-Coat Fluoro-polymer: AAMA 620. Fluoro-polymer finish containing not less than 70 percent PVDF resin by weight in color coat. Prepare, pretreat, and apply coating to exposed metal surfaces to comply with coating and resin manufacturers' written instructions. 2. Color: As selected by Architect from manufacturer's full range. 3. Concealed Finish: Pretreat with manufacturer's standard white or light-colored acrylic or polyester backer finish, consisting of prime coat and wash coat with minimum total dry film thickness of 0.5 mil. 2.3 UNDERLAYMENT MATERIALS A. Self-Adhering, High-Temperature Sheet: Minimum 30 mils thick, consisting of a slip-resistant polyethylene- or polypropylene-film top surface laminated to a layer of butyl- or SBS-modified asphalt adhesive, with release-paper backing; specifically designed to withstand high metal temperatures beneath metal roofing. Provide primer according to written recommendations of underlayment manufacturer. 1. Products: Subject to compliance with requirements, provide one of the following: a. Carlisle Residential, a division of Carlisle Construction Materials; WIP 300HT. b. Grace Construction Products, a unit of W. R. Grace & Co.-Conn.; Grace Ice and Water Shield HT. c. Henry Company; Blueskin PE200 HT. d. Metal-Fab Manufacturing, LLC; MetShield. e. Owens Corning; WeatherLock Specialty Tile & Metal Underlayment. 2. Thermal Stability: ASTM D 1970; stable after testing at 240 deg F or higher. 3. Low-Temperature Flexibility: ASTM D 1970; passes after testing at minus 20 deg F or lower. MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 07 62 00 - CARMEL CITY CENTER Date 03.26.12 SHEET METAL FLASHING AND TRIM MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 2.4 MISCELLANEOUS MATERIALS A. General: Provide materials and types of fasteners, protective coatings, sealants, and other miscellaneous items as required for complete sheet metal flashing and trim installation and as recommended by manufacturer of primary sheet metal or manufactured item unless otherwise indicated. B. Fasteners: Wood screws, annular threaded nails, self-tapping screws, self-locking rivets and bolts, and other suitable fasteners designed to withstand design loads and recommended by manufacturer of primary sheet metal or manufactured item. 1. General: Blind fasteners or self-drilling screws, gasketed, with hex-washer head. a. Exposed Fasteners: Heads matching color of sheet metal using plastic caps or factory-applied coating. Provide metal-backed EPDM or PVC sealing washers under heads of exposed fasteners bearing on weather side of metal. b. Blind Fasteners: High-strength aluminum or stainless-steel rivets suitable for metal being fastened. c. Spikes and Ferrules: Same material as gutter; with spike with ferrule matching internal gutter width. 2. Fasteners for Aluminum Sheet: Aluminum or Series 300 stainless steel. C. Sealant Tape: Pressure-sensitive, 100 percent solids, poly-iso-butylene compound sealant tape with release-paper backing. Provide permanently elastic, non-sag, nontoxic, non-staining tape 1/2 inch wide and 1/8 inc thick. D. Elastomeric Sealant: ASTM C 920, elastomeric polyurethane or silicone polymer sealant; of type, grade, class, and use classifications required to seal joints in sheet metal flashing and trim and remain watertight. E. Bituminous Coating: Cold-applied asphalt emulsion according to ASTM D 1187. 2.5 FABRICATION, GENERAL A. General: Custom fabricate sheet metal flashing and trim to comply with details shown and recommendations in cited sheet metal standard that apply to design, dimensions, geometry, metal thickness, and other characteristics of item required. Fabricate sheet metal flashing and trim in shop to greatest extent possible. 1. Fabricate sheet metal flashing and trim in thickness or weight needed to comply with performance requirements, but not less than that specified for each application and metal. 2. Obtain field measurements for accurate fit before shop fabrication. 3. Form sheet metal flashing and trim to fit substrates without excessive oil canning, buckling, and tool marks; true to line, levels, and slopes; and with exposed edges folded back to form hems. 4. Conceal fasteners and expansion provisions where possible. Do not use exposed fasteners on faces exposed to view. B. Fabrication Tolerances: Fabricate sheet metal flashing and trim that is capable of installation to a tolerance of 1/4 inch in 20 feet on slope and location lines indicated on Drawings and within 1/8-inch offset of adjoining faces and of alignment of matching profiles. C. Expansion Provisions: Form metal for thermal expansion of exposed flashing and trim. MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 07 62 00 - CARMEL CITY CENTER Date 03.26.12 SHEET METAL FLASHING AND TRIM MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 1. Form expansion joints of intermeshing hooked flanges, not less than 1 inch deep, filled with butyl sealant concealed within joints. 2. Use lapped expansion joints only where indicated on Drawings. D. Sealant Joints: Where movable, non-expansion-type joints are required, form metal to provide for proper installation of elastomeric sealant according to cited sheet metal standard. E. Fabricate cleats and attachment devices from same material as accessory being anchored or from compatible, noncorrosive metal. F. Fabricate cleats and attachment devices of sizes as recommended by cited sheet metal standard and by FM Global Property Loss Prevention Data Sheet 1-49 for application, but not less than thickness of metal being secured. G. Seams for Aluminum: Fabricate nonmoving seams with flat-lock seams. Form seams and seal with epoxy seam sealer. H. Do not use graphite pencils to mark metal surfaces. 2.6 ROOF-DRAINAGE SHEET METAL FABRICATIONS A. Hanging Gutters: Fabricate to cross section required, complete with end pieces, outlet tubes, and other accessories as required. Fabricate in minimum 96-inch- long sections. Furnish flat- stock gutter brackets and flat-stock gutter spacers and straps fabricated from same metal as gutters, of size recommended by cited sheet metal standard but with thickness not less than twice the gutter thickness. Fabricate expansion joints, expansion-joint covers, gutter bead reinforcing bars, and gutter accessories from same metal as gutters. Shop fabricate interior and exterior corners. 1. Gutter Profile: SAF Roman 6 inch.. 2. Gutters with Girth up to 15 Inches: Fabricate from the following materials: a. Aluminum: 0.032 inch thick. B. Downspouts: Fabricate rectangular downspouts to dimensions indicated, complete with mitered elbows. Furnish with metal hangers from same material as downspouts and anchors. 1. Hanger Style: SAF Roman. 2. Fabricate from the following materials: a. Aluminum: 0.024 inch thick. C. plash Pans: Fabricate to dimensions and shape required and from the following materials: 1. Aluminum: 0.040 inch thick. 2.7 LOW-SLOPE ROOF SHEET METAL FABRICATIONS A. Roof Edge Flashing (Gravel Stop) and Fascia Cap: Fabricate in minimum 96-inch- long, but not exceeding 12-foot- long sections. Furnish with 6-inch- wide, joint cover plates. Shop fabricate interior and exterior corners. 1. Joint Style: Overlapped, 4 inches wide. 2. Fabricate from the Following Materials: a. Aluminum: 0.050 inch thick. MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 07 62 00 - CARMEL CITY CENTER Date 03.26.12 SHEET METAL FLASHING AND TRIM MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 B. Roof and Roof-to-Wall Transition Roof-to-Roof Edge-Flashing (Gravel-Stop) Transition Expansion-Joint Cover: Fabricate from the following materials: Shop fabricate interior and exterior corners. 1. Aluminum: 0.050 inch thick. C. Base Flashing: Shop fabricate interior and exterior corners. Fabricate from the following materials: 1. Aluminum: 0.040 inch thick. D. Counter flashing: Fabricate from the following materials: 1. Aluminum: 0.032 inch thick. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for installation tolerances, substrate, and other conditions affecting performance of the Work. 1. Verify compliance with requirements for installation tolerances of substrates. 2. Verify that substrate is sound, dry, smooth, clean, sloped for drainage, and securely anchored. 3. Verify that air- or water-resistant barriers have been installed over sheathing or backing substrate to prevent air infiltration or water penetration. B. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 UNDERLAYMENT INSTALLATION A. Self-Adhering Sheet Underlayment: Install self-adhering sheet underlayment, wrinkle free. Prime substrate if recommended by underlayment manufacturer. Comply with temperature restrictions of underlayment manufacturer for installation; use primer for installing underlayment at low temperatures. Apply in shingle fashion to shed water, with end laps of not less than 6 inches staggered 24 inches between courses. Overlap side edges not less than 3-1/2 inches. Roll laps and edges with roller. Cover underlayment within 14 days. 3.3 INSTALLATION, GENERAL A. General: Anchor sheet metal flashing and trim and other components of the Work securely in place, with provisions for thermal and structural movement. Use fasteners, protective coatings, separators, sealants, and other miscellaneous items as required to complete sheet metal flashing and trim system. 1. Install sheet metal flashing and trim true to line, levels, and slopes. Provide uniform, neat seams with minimum exposure of solder, welds, and sealant. 2. Install sheet metal flashing and trim to fit substrates and to result in watertight performance. Verify shapes and dimensions of surfaces to be covered before fabricating sheet metal. 3. Space cleats not more than 12 inches apart. Attach each cleat with at least two fasteners. Bend tabs over fasteners. MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 07 62 00 - CARMEL CITY CENTER Date 03.26.12 SHEET METAL FLASHING AND TRIM MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 4. Install exposed sheet metal flashing and trim with limited oil canning, and free of buckling and tool marks. 5. Torch cutting of sheet metal flashing and trim is not permitted. 6. Do not use graphite pencils to mark metal surfaces. B. Metal Protection: Where dissimilar metals contact each other, or where metal contacts pressure-treated wood or other corrosive substrates, protect against galvanic action or corrosion by painting contact surfaces with bituminous coating or by other permanent separation as recommended by sheet metal manufacturer or cited sheet metal standard. 1. Coat concealed side of uncoated-aluminum sheet metal flashing and trim with bituminous coating where flashing and trim contact wood, ferrous metal, or cementitious construction. 2. Underlayment: Where installing sheet metal flashing and trim directly on cementitious or wood substrates, install underlayment and cover with slip sheet. C. Expansion Provisions: Provide for thermal expansion of exposed flashing and trim. Space movement joints at maximum of 10 feet with no joints within 24 inches of corner or intersection. 1. Form expansion joints of intermeshing hooked flanges, not less than 1 inch deep, filled with sealant concealed within joints. 2. Use lapped expansion joints only where indicated on Drawings. D. Fasteners: Use fastener sizes that penetrate substrate not less than recommended by fastener manufacturer to achieve maximum pull-out resistance. E. Conceal fasteners and expansion provisions where possible in exposed work and locate to minimize possibility of leakage. Cover and seal fasteners and anchors as required for a tight installation. F. Seal joints as required for watertight construction. 1. Use sealant-filled joints unless otherwise indicated. Embed hooked flanges of joint members not less than 1 inch into sealant. Form joints to completely conceal sealant. When ambient temperature at time of installation is between 40 and 70 deg F, set joint members for 50 percent movement each way. Adjust setting proportionately for installation at higher ambient temperatures. Do not install sealant-type joints at temperatures below 40 deg F. 2. Prepare joints and apply sealants to comply with requirements in Section 07 92 00 "Joint Sealants." 3.4 ROOF-DRAINAGE SYSTEM INSTALLATION A. General: Install sheet metal roof-drainage items to produce complete roof-drainage system according to cited sheet metal standard unless otherwise indicated. Coordinate installation of roof perimeter flashing with installation of roof-drainage system. B. Hanging Gutters: Join sections with joints sealed with sealant. Provide for thermal expansion. Attach gutters at eave or fascia to firmly anchor them in position. Provide end closures and seal watertight with sealant. Slope to downspouts. 1. Fasten gutter spacers to front and back of gutter. 2. Anchor and loosely lock back edge of gutter to continuous cleat eave or apron flashing. 3. apart to roof deck, unless otherwise indicated, and loosely lock to front gutter bead. 4. Install gutter with expansion joints at locations indicated, but not exceeding, 50 feet apart. Install expansion-joint caps. MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 07 62 00 - CARMEL CITY CENTER Date 03.26.12 SHEET METAL FLASHING AND TRIM MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 5. Install continuous gutter screens on gutters with noncorrosive fasteners, removable for cleaning gutters. C. Downspouts: Join sections with 1-1/2-inch telescoping joints. 1. Provide hangers with fasteners designed to hold downspouts securely to walls. Locate hangers at top and bottom and at approximately 60 inches o.c. 2. Provide elbows at base of downspout to direct water away from building. 3. Connect downspouts to underground drainage system. D. Splash Pans: Install where downspouts discharge on low-slope roofs. Set in elastomeric sealant compatible with the substrate. E. Expansion-Joint Covers: Install expansion-joint covers at locations and of configuration indicated. Lap joints minimum of 4 inches in direction of water flow. 3.5 ROOF FLASHING INSTALLATION A. General: Install sheet metal flashing and trim to comply with performance requirements, sheet metal manufacturer's written installation instructions, and cited sheet metal standard. Provide concealed fasteners where possible, and set units true to line, levels, and slopes. Install work with laps, joints, and seams that are permanently watertight and weather resistant. B. Roof Edge Flashing: Anchor to resist uplift and outward forces according to recommendations in cited sheet metal standard unless otherwise indicated. Interlock bottom edge of roof edge flashing with continuous cleat anchored to substrate at staggered 3-inch centers. C. Roof Edge Flashing: Anchor to resist uplift and outward forces according to recommendations in FM Global Property Loss Prevention Data Sheet 1-49 for FM Approvals' listing for required windstorm classification. D. Counter flashing: Coordinate installation of counter flashing with installation of base flashing. Insert counter flashing in reglets or receivers and fit tightly to base flashing. Extend counter flashing 4 inches over base flashing. Lap counter flashing joints minimum of 4 inches . Secure in waterproof manner by means of snap-in installation and sealant unless otherwise indicated. 3.6 ERECTION TOLERANCES A. Installation Tolerances: Shim and align sheet metal flashing and trim within installed tolerance of 1/4 inch in 20 feet on slope and location lines indicated on Drawings and within 1/8-inch offset of adjoining faces and of alignment of matching profiles. 3.7 CLEANING AND PROTECTION A. Clean exposed metal surfaces of substances that interfere with uniform oxidation and weathering. B. Clean off excess sealants. C. Remove temporary protective coverings and strippable films as sheet metal flashing and trim are installed unless otherwise indicated in manufacturer's written installation instructions. On MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 07 62 00 - CARMEL CITY CENTER Date 03.26.12 SHEET METAL FLASHING AND TRIM MATT THE MILLER’S; CARMEL CITY CENTER; SUITE 101 completion of sheet metal flashing and trim installation, remove unused materials and clean finished surfaces as recommended by sheet metal flashing and trim manufacturer. Maintain sheet metal flashing and trim in clean condition during construction. D. Replace sheet metal flashing and trim that have been damaged or that have deteriorated beyond successful repair by finish touchup or similar minor repair procedures. END OF SECTION 07 62 00