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HomeMy WebLinkAbout07-6200-Sheet-Metal-Flashing-and-Trim-(Part-of-FSB-07-0002)_Rev_1Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 SHEET METAL FLASHING AND TRIM 07 6200 - 1 SECTION 07 6200 SHEET METAL FLASHING AND TRIM (Part of Filed Sub-Bid Section 07 0002 - Roofing And Flashing) 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. Work Included: Provide labor, materials and equipment necessary to complete the work of this Section, including but not limited to the following: 1. Manufactured reglets with counterflashing. 2. Formed low-slope roof sheet metal fabrications. 3. Formed wall sheet metal fabrications. 4. Formed equipment support flashing. 5. Other items indicated on Drawings as Work of this Section. B. Related Requirements: 1. Section 01 8113 “Sustainable Design Requirements” for general requirements and procedures for compliance with certain USGBC LEED prerequisites and credits. 2. Section 01 9113 “General Commissioning Requirements." 3. Section 01 9119 “Facility Shell Commissioning" for commissioning process requirements for building envelope commissioning. 4. Section 04 2000 "Unit Masonry" for materials and installation of sheet metal through-wall flashing and trim integral with masonry. 5. Section 06 1000 "Rough Carpentry" for wood nailers and blocking. 6. Section 07 4213.23 “Metal Composite Material (MCM) Wall Panels" for sheet metal flashing and trim integral with metal wall panels. 7. Section 07 4246 “Cementitious Wall Panels" for sheet metal flashing and trim integral with cementitious wall panels. 8. Section 07 5419 “Polyvinyl-Chloride (PVC) Roofing” for installation of sheet metal flashing and trim integral with roofing. 9. Section 07 7100 "Roof Specialties" for manufactured copings and roof-edge specialties. 10. Section 07 7129 “Manufactured Roof Expansion Joints.” 11. Section 07 7200 "Roof Accessories" for hatch-type heat and smoke vents, elevator penthouse ventilators with operable dampers, roof drain markers, and other manufactured roof accessory units. 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. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 SHEET METAL FLASHING AND TRIM 07 6200 - 2 1.4 PREINSTALLATION MEETINGS A. Preinstallation 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. Make Submittals in accordance with Section 01 3300 “Submittal Procedures.” B. Product Data: For each of the following 1. Underlayment materials. 2. Elastomeric sealant. 3. Butyl sealant. 4. Epoxy seam sealer. C. Sustainable Design Submittals: 1. Recycled Content: Provide manufacturers’ product documentation that includes recycled content claims for the products contributing towards compliance. Claims must conform to the definition in ISO 14021-1999, Environmental Labels and Declarations, Self-Declared Environmental Claims. a. Complete "LEED Materials Documentation Sheet" with MRc3 Option 2 information for products with recycled content installed in the building. D. Shop Drawings: For sheet metal flashing and trim. 1. Include plans, elevations, sections, and attachment details. 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 roof-penetration flashing. 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. E. 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. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 SHEET METAL FLASHING AND TRIM 07 6200 - 3 1.6 INFORMATIONAL SUBMITTALS A. Qualification Data: For fabricator. B. Product Test Reports: For each product, for tests performed by a qualified testing agency. C. 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. B. Special warranty. 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. B. Mockups: Build mockups to verify selections made under Sample submittals, to demonstrate aesthetic effects, and to set quality standards for fabrication and installation. 1. Provide materials to include in Integrated Exterior Wall Mockups specified in Section 01 4339 “Mockups.” 2. Approval of mockups does not constitute approval of deviations from the Contract Documents contained in mockups unless Owner specifically approves such deviations in writing. 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. 1. Store sheet metal flashing and trim materials away from uncured concrete and masonry. 2. Protect stored sheet metal flashing and trim from contact with water. 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 Delta E units when tested in accordance with ASTM D2244. b. Chalking in excess of a No. 8 rating when tested in accordance with ASTM D4214. c. Cracking, checking, peeling, or failure of paint to adhere to bare metal. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 SHEET METAL FLASHING AND TRIM 07 6200 - 4 2. Finish Warranty Period: 20 years from date of Substantial Completion. PART 2 - PRODUCTS 2.1 LEED REQUIREMENTS A. Recycled Content: Provide products with the maximum recycled content possible. Minimum recycled content 20 percent. 2.2 PERFORMANCE REQUIREMENTS A. Sheet metal flashing and trim assemblies, including cleats, anchors, and fasteners, 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: Architectural Metal Flashing, Condensation and Air Leakage Control, and Reroofing" and SMACNA's "Architectural Sheet Metal Manual" requirements for dimensions and profiles shown unless more stringent requirements are indicated. C. 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. 2.3 SHEET METALS A. Protect mechanical and other finishes on exposed surfaces from damage by applying strippable, temporary protective film before shipping. B. Aluminum Sheet: ASTM B209, alloy as standard with manufacturer for finish required, with temper as required to suit forming operations and performance required; with smooth, flat surface. 1. Exposed Coil-Coated Finish: a. Three-Coat Fluoropolymer: AAMA 2605. Fluoropolymer finish containing not less than 70 percent polyvinylidene fluoride (PVDF) resin by weight in both color coat and clear topcoat. Prepare, pretreat, and apply coating to exposed metal surfaces to comply with coating and resin manufacturers' written instructions for seacoast and severe environments. b. Color: As selected by Architect from manufacturer's full range. 2. 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. C. Stainless Steel Sheet: ASTM A240/A240M, Type 304, dead soft, fully annealed; with smooth, flat surface. 1. Finish: ASTM A480/A480M, No. 2D (dull, cold rolled). Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 SHEET METAL FLASHING AND TRIM 07 6200 - 5 2.4 UNDERLAYMENT MATERIALS A. Felt: ASTM D226/D226M, Type II (No. 30), asphalt-saturated organic felt; nonperforated. B. Slip Sheet: Rosin-sized building paper, 3 lb/100 sq. ft. minimum. 2.5 MISCELLANEOUS MATERIALS A. Provide materials and types of fasteners, solder, 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. 2. Fasteners for Aluminum Sheet: Aluminum or Series 300 stainless steel. 3. Fasteners for Stainless Steel Sheet: Series 300 stainless steel. C. Solder For Stainless Steel: ASTM B32, Grade Sn60 or Grade Sn96, with acid flux of type recommended by stainless steel sheet manufacturer. D. Sealant Tape: Pressure-sensitive, 100 percent solids, polyisobutylene compound sealant tape with release-paper backing. Provide permanently elastic, nonsag, nontoxic, nonstaining tape 1/2 inch wide and 1/8 inch thick. E. Elastomeric Sealant: ASTM C920, elastomeric silicone polymer sealant; of type, grade, class, and use classifications required to seal joints in sheet metal flashing and trim and remain watertight. F. Butyl Sealant: ASTM C1311, single-component, solvent-release butyl rubber sealant; polyisobutylene plasticized; heavy bodied for hooked-type expansion joints with limited movement. G. Epoxy Seam Sealer: Two-part, noncorrosive, aluminum seam-cementing compound, recommended by aluminum manufacturer for exterior nonmoving joints, including riveted joints. H. Bituminous Coating: Cold-applied asphalt emulsion in accordance with ASTM D1187/D1187M. I. Reglets: Units of type, material, and profile required, formed to provide secure interlocking of separate reglet and counterflashing pieces, and compatible with flashing indicated with factory- mitered and -welded corners and junctions. 1. Source Limitations: Obtain reglets from single source from single manufacturer. 2. Material: Stainless steel, 0.0188 inch thick; or aluminum, 0.024 inch thick. 3. Surface-Mounted Type: Provide with slotted holes for fastening to substrate, with neoprene or other suitable weatherproofing washers, and with channel for sealant at top edge. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 SHEET METAL FLASHING AND TRIM 07 6200 - 6 4. Concrete Type: Provide temporary closure tape to keep reglet free of concrete materials, special fasteners for attaching reglet to concrete forms, and guides to ensure alignment of reglet section ends. 5. Masonry Type: Provide with offset top flange for embedment in masonry mortar joint. 6. Accessories: a. Counterflashing Wind-Restraint Clips: Provide clips to be installed before counterflashing to prevent wind uplift of counterflashing's lower edge. 7. Finish: Mill. 2.6 FABRICATION, GENERAL A. Custom fabricate sheet metal flashing and trim to comply with details indicated and recommendations in cited sheet metal standard that apply to design, dimensions, geometry, metal thickness, and other characteristics of item required. 1. Fabricate sheet metal flashing and trim in shop to greatest extent possible. 2. 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. 3. Verify shapes and dimensions of surfaces to be covered and obtain field measurements for accurate fit before shop fabrication. 4. 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. 5. Conceal fasteners and expansion provisions where possible. Do not use exposed fasteners on faces exposed to view. B. Fabrication Tolerances: 1. 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. 2. Fabricate sheet metal flashing and trim that is capable of installation to tolerances specified. C. Expansion Provisions: Form metal for thermal expansion of exposed flashing and trim. 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, nonexpansion-type joints are required, form metal in accordance with cited sheet metal standard to provide for proper installation of elastomeric sealant. 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 for application, but not less than thickness of metal being secured. G. Seams: Fabricate nonmoving seams with flat-lock seams. Form seams and seal with elastomeric sealant unless otherwise recommended by sealant manufacturer for intended use. Rivet joints where necessary for strength. H. Do not use graphite pencils to mark metal surfaces. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 SHEET METAL FLASHING AND TRIM 07 6200 - 7 2.7 LOW-SLOPE ROOF SHEET METAL FABRICATIONS A. Base Flashing: Shop fabricate interior and exterior corners. Fabricate from the following materials: 1. Aluminum: 0.040 inch thick. B. Counterflashing: Shop fabricate interior and exterior corners. Fabricate from the following materials: 1. Aluminum: 0.032 inch thick. C. Flashing Receivers: Fabricate from the following materials: 1. Aluminum: 0.032 inch thick. D. Roof-Penetration Flashing: Fabricate from the following materials: 1. Stainless Steel: 0.0188 inch thick. 2.8 WALL SHEET METAL FABRICATIONS A. Opening Flashings in Frame Construction: Fabricate head, sill,[ jamb,] and similar flashings to extend 4 inches beyond wall openings. Form head and sill flashing with 2-inch- high, end dams. Fabricate from the following materials: 1. Aluminum: 0.032 inch thick. 2.9 MISCELLANEOUS SHEET METAL FABRICATIONS A. Equipment Support Flashing: Fabricate from the following materials: 1. Stainless Steel: 0.0188 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 INSTALLATION OF UNDERLAYMENT A. Felt Underlayment: Install felt underlayment, wrinkle free, using adhesive to minimize use of mechanical fasteners under sheet metal flashing and trim. 1. Install in shingle fashion to shed water. 2. Lap joints not less than 2 inches. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 SHEET METAL FLASHING AND TRIM 07 6200 - 8 B. Install slip sheet, wrinkle free, over underlayment before installing sheet metal flashing and trim. 1. Install in shingle fashion to shed water. 2. Lapp joints not less than 4 inches. 3.3 INSTALLATION, GENERAL A. Install sheet metal flashing and trim to comply with details indicated and recommendations of cited sheet metal standard that apply to installation characteristics required unless otherwise indicated on Drawings. 1. Install fasteners, protective coatings, separators, sealants, and other miscellaneous items as required to complete sheet metal flashing and trim system. 2. Install sheet metal flashing and trim true to line, levels, and slopes. Provide uniform, neat seams with minimum exposure of sealant. 3. Anchor sheet metal flashing and trim and other components of the Work securely in place, with provisions for thermal and structural movement. 4. Install sheet metal flashing and trim to fit substrates and to result in watertight performance. 5. Install continuous cleats with fasteners spaced not more than 12 inches o.c. 6. Space individual cleats not more than 12 inches apart. Attach each cleat with at least two fasteners. Bend tabs over fasteners. 7. Install exposed sheet metal flashing and trim with limited oil-canning, and free of buckling and tool marks. 8. Do not field cut sheet metal flashing and trim by torch. 9. 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 and stainless steel 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. 1. Space movement joints at maximum of 10 feet with no joints within 24 inches of corner or intersection. 2. Form expansion joints of intermeshing hooked flanges, not less than 1 inch deep, filled with sealant concealed within joints. 3. Use lapped expansion joints only where indicated on Drawings. D. Fasteners: Use fastener sizes that penetrate wood blocking or sheathing not less than 1-1/4 inches for nails and not less than 3/4 inch for wood screws. 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. a. Embed hooked flanges of joint members not less than 1 inch into sealant. b. Form joints to completely conceal sealant. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 SHEET METAL FLASHING AND TRIM 07 6200 - 9 c. When ambient temperature at time of installation is between 40 and 70 deg F, set joint members for 50 percent movement each way. d. Adjust setting proportionately for installation at higher ambient temperatures. 1) 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 9200 "Joint Sealants." G. Soldered Joints: Clean surfaces to be soldered, removing oils and foreign matter. 1. Stainless Steel Soldering: a. Tin edges of uncoated sheets, using solder for stainless steel and acid flux. b. Promptly remove acid-flux residue from metal after tinning and soldering. c. Comply with solder manufacturer's recommended methods for cleaning and neutralization. 3.4 INSTALLATION OF ROOF FLASHINGS A. Install sheet metal flashing and trim to comply with performance requirements and cited sheet metal standard. 1. Provide concealed fasteners where possible, and set units true to line, levels, and slopes. 2. Install work with laps, joints, and seams that are permanently watertight and weather resistant. B. Pipe or Post Counterflashing: Install counterflashing umbrella with close-fitting collar with top edge flared for elastomeric sealant, extending minimum of 4 inches over base flashing. Install stainless steel draw band and tighten. C. Counterflashing: Coordinate installation of counterflashing with installation of base flashing. 1. Insert counterflashing in reglets or receivers and fit tightly to base flashing. 2. Extend counterflashing 4 inches over base flashing. 3. Lap counterflashing joints minimum of 4 inches. 4. Secure in waterproof manner by means of anchor and washer spaced at 12 inches o.c. along perimeter and 6 inches o.c. at corners areas unless otherwise indicated. D. Roof-Penetration Flashing: Coordinate installation of roof-penetration flashing with installation of roofing and other items penetrating roof. Seal with elastomeric sealant and clamp flashing to pipes that penetrate roof. 3.5 INSTALLATION OF WALL FLASHINGS A. Install sheet metal wall flashing to intercept and exclude penetrating moisture in accordance with cited sheet metal standard unless otherwise indicated. Coordinate installation of wall flashing with installation of wall-opening components such as windows, doors, and louvers. B. Opening Flashings in Frame Construction: Install continuous head, sill, jamb, and similar flashings to extend 4 inches beyond wall openings. C. Reglets: Installation of reglets is specified in Section 03 3000 "Cast-in-Place Concrete" and Section 04 2200 "Concrete Unit Masonry." Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 SHEET METAL FLASHING AND TRIM 07 6200 - 10 3.6 INSTALLATION OF MISCELLANEOUS FLASHING A. Equipment Support Flashing: 1. Coordinate installation of equipment support flashing with installation of roofing and equipment. 2. Weld or seal flashing with elastomeric sealant to equipment support member. 3.7 INSTALLATION 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. 3.8 COMMISSIONING A. Facility Shell Commissioning: The building enclosure will be inspected and tested by Owner’s testing agency and witnessed by the Owner’s Commissioning Agent during construction. Comply with commissioning process requirements. 1. Commissioning Agent: During construction the Owner’s commissioning agent will perform site visits to observe that the construction is in general conformance with the Contract Documents. Observations by the Commissioning Agent will be on a “spot check” basis. 2. Commissioning requirements shall not reduce nor diminish the responsibility of Contractor, subcontractors, and material suppliers in performing the Work as required by Contract Documents. Requirements specified in commissioning requirements are in addition to requirements specified in related specification Sections. 3. Repair or replace materials, products, and components damaged by testing at no additional cost to Owner. Replace materials, products, and components that fail inspections and tests at no additional cost to Owner. 3.9 CLEANING A. Clean and neutralize flux materials. Clean off excess solder. B. Clean off excess sealants. 3.10 PROTECTION A. Remove temporary protective coverings and strippable films as sheet metal flashing and trim are installed unless otherwise indicated in manufacturer's written installation instructions. B. On completion of sheet metal flashing and trim installation, remove unused materials and clean finished surfaces as recommended in writing by sheet metal flashing and trim manufacturer. C. 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, as determined by Architect. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 SHEET METAL FLASHING AND TRIM 07 6200 - 11 END OF SECTION (THIS PAGE IS BLANK)