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SECTION 07 42 53 - Exposed Fastener Wall Panels
NorthClad® EF Panel System
Published: July 2019

PART 1 GENERAL

1.1 SUMMARY

  1. Section Includes:

    1. Exposed fastener plate panel dry joint, drained, back-ventilated rainscreen system.

    2. Components:

      1. 0.090-inch structural Alloy 6061T6 or 6005A extruded aluminum closure, prefinished black with Polylure 1500 or anodized

      2. 0.090-inch structural Alloy 6061T6 or 6005A extruded aluminum hat channel, prefinished black with Polylure 1500 or anodized

      3. 0.090-inch structural Alloy 6061T6 or 6005A extruded aluminum zee shape, prefinished black with Polylure 1500, or mill finished or anodized

      4. 0.032-inch perforated flashing prefinished with black Duranar® coating.

  2. Related Sections:

    1. Section 054000 – Cold-Formed Metal Framing

    2. Section 061000 – Rough Carpentry

    3. Section 061643 – Gypsum Sheathing

    4. Section 072500 – Air Barriers

    5. Section 076200 – Sheet Metal Flashing and Trim

    6. Section 079200 – Joint Sealants

1.2 REFERENCES

  1. Reference Standards: Current edition at date of Bid.

  2. ASTM International:

    1. ASTM B 117 – Standard Practice for Operating Salt Spray (Fog) Apparatus. ASTM D 294 – Method of Tumbler Test for Coke.

    2. ASTM D 659 – Method of Evaluating Degree of Chalking of Exterior Paints.

    3. ASTM D 968 – Standard Test Methods for Abrasion Resistance of Organic Coatings by Falling Abrasive.

    4. ASTM D 2244 – Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates.

    5. ASTM D 2247 – Practice for Testing Water Resistance of Coatings in 100% Relative Humidity.

    6. ASTM D 3352 – Standard Test Method for Strontium Ion in Brackish Water, Seawater, and Brines.

    7. ASTM E 84 – Standard Test Method for Surface Burning Characteristics of Building Materials.

    8. ASTM E 283 – Standard Test Method for Determining Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen.

    9. ASTM E 330 – Standard Test Method for Structural Performance of Exterior Windows, Doors, Skylights and Curtain Walls by Uniform Static Air Pressure Difference.

    10. ASTM E 331 – Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure Difference.

1.3 ADMINISTRATIVE REQUIREMENTS

  1. Coordination: Conform to Section 01 31 13 for coordination with work of other Sections.

    1. Section 07 25 00 for application of air barrier over gypsum sheathing substrate as specified in Section 06 16 43 following installation of subgirt system as required to seal and make a continuous air barrier.

  2. Preconstruction Meetings: Conform to provisions of Section 01 31 19.

    1. Attendance: Contractor, Applicator, Owner, Architect, and those specifically requested to attend.

      1. Review and finalize construction schedule and verify availability of materials, installer’s personnel, equipment, and facilities needed to make progress and avoid delays.

      2. Review methods and procedures related to aluminum metal panel installation, including manufacturer’s written instructions.

      3. Examine support conditions for compliance with requirements, including alignment between and attachment to the structural members.

      4. Review flashings, special details, wall penetrations, openings, and condition of other construction that will affect wall panels.

      5. Review governing regulations and requirements for insurance, certificates, tests, and inspections as applicable.

      6. Review temporary protection requirements for aluminum wall panel assembly during and after installation.

      7. Review wall panel observation and repair procedures after completion of wall panel installation.

1.4 DESIGN REQUIREMENTS

  1. Components: Designed and manufactured to withstand dead and live loads caused by positive and negative wind pressure acting normally to plane of composite wall panels in accordance with International Building Code, Chapter 16.

  2. Wall Panel Deflection: L/180.

  3. Perimeter Framing Deflection: L/180.

  4. Thermal Movement: Design system to accommodate vertical and horizontal thermal movement of components without causing distortion, or excessive stress on fasteners when subjected to recurring temperature variations.

  5. Drainage: Design for positive drainage of water leakage and condensation to exterior of wall panel system.

  6. Tolerance of Substructure: Design system to accommodate up to 1/4 inch in 10 feet variation out of plane.

  7. Seismic Design: Conform to International Building Code for the Seismic Category appropriate for location of system installation.

1.5 PERFORMANCE REQUIREMENTS

  1. Provide the following testing documentation: Testing documentation must be current and meet or exceed specified design and performance requirements, and must be documented and certified by an independent testing agency acceptable to Architect and applicable building code jurisdiction.

  2. Rainscreen Panel Type: Stonewood with 1-inch extrusions.

    1. Air Infiltration in accordance with ASTM E 283 (at 6.24 pounds per square foot): Less than 0.10 cubic feet per minute per square foot.

    2. Water Penetration in accordance with ASTM E 331: Full pass at 25.00 pounds per square foot, 30.00 pounds per square foot, and 35.00 pounds per square foot.

    3. Structural Performance in accordance with ASTM E 330 (at 75.00 pounds per square foot):

    4. Maximum Deflection: L/180.

  3. Rainscreen Panel Type: NorthClad® EF Series 4mm Aluminum Composite Material with edge hem.

    1. Air Infiltration in accordance with ASTM E 283 (at 6.24 pounds per square foot): Less than 0.10 cubic feet per minute per square foot.

    2. Water Penetration in accordance with ASTM E 331: Full pass at 25.00 pounds per square foot, 30.00 pounds per square foot, and 35.00 pounds per square foot.

    3. Structural Performance in accordance with ASTM E 330 (at 75.00 pounds per square foot):

    4. Maximum Deflection: L/180.

  4. Rainscreen Panel Type: 0.125 Aluminum Plate

    1. Air Infiltration in accordance with ASTM E 283 (at 6.24 pounds per square foot): Less than 0.10 cubic feet per minute per square foot.

    2. Water Penetration in accordance with ASTM E 331: Full pass at 25.00 pounds per square foot, 30.00 pounds per square foot, and 35.00 pounds per square foot.

    3. Structural Performance in accordance with ASTM E 330 (at 75.00 pounds per square foot):

    4. Maximum Deflection: L/180.

1.6 SUBMITTALS

  1. Submit under provisions of Section 01 33 00.

  2. LEED Credits: Conform to Section 01 81 13 for documentation of LEED Credits contributing to certification of project under USGBC LEED 2009 (Version 3.0) Green Building Rating System for Sustainable Building Requirements.

  3. Product Test Reports: Indicate compliance of products with requirements from qualified, independent testing agency.

  4. Shop Drawings:

    1. Provide drawing details prepared by manufacturer or manufacturer’s authorized agent showing openings and penetrations.

    2. Include details of each condition of installation and attachment.

    3. Provide details at a minimum scale of 1-1/2 inch per foot of all required trim needed for complete installation.

    4. Provide shop drawings reflecting deviations from manufacturer’s standard details and details differing from Contract Documents. Include components, metal panel profile, dimensions, joinery dimensions, configurations, and reason for deviation.

  5. Product Data:

    1. Manufacturer’s technical data, installation instructions, standard detail drawings specific to this project, and accessories showing conformance with specified requirements.

    2. Fasteners, including clips, fastener types, and locations.

    3. Treatment at edges, terminations, and flashings.

    4. Indicate provisions for thermal expansion and contraction.

  6. Product Samples: 3-1/2 inch by 3-1/2 inch showing metal gauge, profile, and specified finish for each specified wall and/or soffit panel reflecting the color sample, illustrating accepting finish, and each color selection.

  7. Manufacturer’s Instructions: Indicate installation requirements, rough-in dimensions, special procedures, and conditions requiring special attention.

  8. Sample Warranty: Meet or exceed provisions specified by this Section.

1.7 QUALITY ASSURANCE

  1. Manufacturer Qualifications:

    1. Minimum of 10 years’ experience in fabricating and supplying metal wall panel systems.

    2. Responsible for technical design support as required for system installation conforming to panel manufacturer’s warranty provisions.

    3. Provide review and approval of shop drawings differing from panel manufacturer’s standard details prior to installation and conduct interim inspections during construction.

  2. BB. Installer Qualifications:

    1. Able to document a minimum 7 years’ experience installing commercial metal wall panel systems.

    2. Trained and authorized by metal wall panel manufacturer prior to Bid Date.

    3. Employ job-site foreman, with minimum of 3 years’ experience supervising installation of metal wall panel work of this Section, dedicated to Work of this Contract.

    4. Foreman: Continuously on site for duration of work of this Section for this Project.

  3. Single Source Responsibility:

    1. Provide system and components for this Section under responsibility of single metal wall panel manufacturer.

    2. Perform metal panel and related flashing and sheet metal work by or under supervision of single installer.

1.8 WARRANTY

  1. Provide warranties under provisions of Section 01 78 36.

  2. Manufacturer Coating Performance Warranty: 20-year warranty against fading, color change, chalking, peeling, cracking, or delaminating of the coating system. Solid colors panel only.

  3. FF. Contractor: 5-year labor warranty for panel installation, including, flashings, sealants, fasteners, and accessories to remain watertight and weatherproof.

PART 2 PRODUCTS

2.1 SYSTEMS

  1. Exposed fastener plate panel, dry joint, drained, back-ventilated rainscreen system.

2.2 MANUFACTURERS

  1. Subject to compliance with requirements, provide products manufactured by NorthClad, 11831 Beverly Park Road, Building C, Everett, Washington 98204, telephone 425-740-3702, e-mail: dkillian@northclad.com, website: www.northclad.com.

    1. NorthClad EF: Prefinished NorthClad EF Series wall panel system.

    2. Submit alternate tested systems by other manufacturers/fabricators to architect not less than 30 days prior to bid.

2.3 MATERIALS

  1. Panel Skin Material:

    1. Plate Aluminum panels form 5052 or 3003 alloy. Anodized use 5005 alloy.

    2. 0.125 thickness.

  2. Components:

    1. 0.090 inch structural Alloy 6061T6 or 6005A extruded aluminum closure, prefinished black with Polylure 1500 or anodized.

    2. 0.090 inch structural Alloy 6061T6 or 6005A extruded aluminum hat channel, prefinished black with Polylure 1500 or anodized.

    3. 0.090 inch structural Alloy 6061T6 or 6005A extruded aluminum zee shape, prefinished black with Polylure 1500 or anodized.

    4. 0.032 inch perforated top closure flashing prefinished with black Duranar® coating.

    5. 0.032 inch perforated termination flashing prefinished with black Duranar® coating.

    6. 0.032 inch horizontal drip joint flashing prefinished with black Duranar® coating.

    7. 0.032 inch inside corner flashing prefinished with black Duranar® coating.

  3. Tolerances:

    1. Panel bow not to exceed L/180 of panel overall dimension in width or length.

    2. Panel dimensions allow for field adjustment and thermal movement.

    3. Panel lines to be sharp, smooth, and free from warps or buckles.

  4. Condition: Panel surfaces to be free of scratches and marks caused by fabrication.

  5. Uniformity: Manufacture entire project from a single-color coil paint run to ensure color uniformity. If metallic color is used, panel grain must be maintained. Under no circumstances are panel blank sizes to be rotated even if the result is increased waste.

  6. Vapor Management: Fabricate panels for control of condensation and ventilation of the rainscreen cavity.

  7. Custom Fabrications: Include fabrications, whether specifically indicated or not, as required to complete a watertight and finished system.

  8. Strippable Protective Film: Factory applied for protection of weather face finish and removed upon completion of the panel installation. Failure to remove the film may lead to over- exposure and damage to the panel.

2.4 FABRICATION

  1. Standard Fabrications: Routed NorthClad® sheets required to maintain tolerances.

  2. Tolerances:

    1. Not to exceed L/180 percent of panel dimension in width and length for panel bow.

    2. Allow for field adjustments as recommended by the manufacturer where final dimensions cannot be established by field measurement before completion of panel manufacturing.

    3. Eliminate all warping and/or bucking in panel lines, breaks, and angles.

  3. Eliminate all scratches and marks caused by the fabrication from panel surfaces.

2.5 FASTENERS

  1. Supply Fasteners and clips tested to meet provisions of this section, as approved by fastener manufacturer(s) and engineer of record.

  2. Exposed Fasteners:

    1. Stainless steel unless otherwise recommended by the panel manufacturer.

    2. Construction Fasteners, Inc., ZAC, self-drilling, self-tapping, non-corrosive fasteners with heads finished to match panel finishes and flashings; gasketed with EPDM washers, or as recommended by the manufacturer.

  3. Concealed Sheet Metal Fasteners: Panhead, self-drilling, self-tapping, non-corrosive fasteners, and as instructed by manufacturer and engineer of record.

  4. Fastener Lengths: Penetrate cold-formed metal framing and subgirts, and other metal framing systems in accordance with the fastener manufacturer’s recommendations.

2.6 FLASHINGS

  1. Metal Flashing, Fascias, and Trim: 0.032 inch minimum, material, color, and finish as wall panels, conforming to provisions of Section 07 60 00.

  2. Provide custom metal flashing shapes to suit conditions for watertight installation.

  3. Panel and Flashing Closures: Waterproof, semi-rigid, polyethylene closed cell foam, or solid rubber in size and shape to tightly fit panel configuration.

    1. Cutting and Fitting: Make neat, square, and true. Cut panels, de-burr edges, and clean filings from adjacent surfaces.

2.7 SEALANTS

  1. Conform to Section 07 92 00 and manufacturer’s instructions.

2.8 FINISH

  1. Sheet and Coil Factory Finish for Wall Panel:

    1. Weather Face: Polyvinylidene Fluoride (PVDF) coil coating with 70 percent Kynar 500 or Hylar 5000 resin content.

    2. Primer: UV-resistant, 0.210 mil thick epoxy modified acrylic.

    3. Color Coat: 0.80 mil PVDF.

  2. Performance:

    1. Change of Color: Maximum 5 DE (Hunter Units), tested to ASTM D2244.

    2. Chalking: No. 8 rating tested to ASTM D4214, Photographic Reference Standard No. 1 Test Method D659.

PART 3 EXECUTION

3.1 EXAMINATION

  1. Verify installation conditions are satisfactory to receive work of this Section before commencement.

    1. Verify substrate installation is complete, flat, and true to plane.

3.2 PREPARATION

  1. Field Measurements: Verify prior to fabrication of metal panels and flashings.

  2. Electrolytic Protection: Treat contacting surfaces of dissimilar metal of different galvanic range with non-absorptive tape, gaskets, or additional measures as instructed by manufacturer.

  3. Protect surrounding areas and surfaces to preclude damage during work of this Section.

  4. Lay out work before beginning installation as necessary for true, plumb, and aligned panel installations.

  5. Verify locations of joints and panel lengths.

3.3 INSTALLATION

  1. Conform to manufacturer’s instructions and provisions of Contract Documents.

  2. Coordinate blocking requirements in stud walls.

  3. Install to allow thermal expansion of panels.

3.4 PANEL GIRTS AND FASTENERS

  1. Space, locate, align, and fasten subgirt hat channel framing over gypsum sheathing after application of air barrier specified by Section 07 25 00.

  2. Install fasteners in lengths and locations required to penetrate hat channels and structural metal wall framing in accordance with fastener manufacturers’ instructions.

  3. Torque screws as necessary for a snug fit. Do not over-torque to prevent damage to panels.

3.5 WALL PANELS

  1. Use appropriate techniques for the material selected. Inquire with NorthClad®

  2. Do not stretch or compress panels.

  3. Secure panels in place with panels aligned without warp or deflection.

  4. Make cutting and fitting neat, square, and true. Where required cut, de-burr edges, and clean filings from adjacent surfaces.

3.6 FLASHINGS

  1. Install flashings as part of manufactured system as necessary to seal and close ends and to restrict water penetration behind wall panels.

  2. Thermal Movement: Install flashing systems to allow unrestricted thermal movement of metal panels.

  3. Penetrations: Make cutouts and edge clearances of sufficient size and shape to allow unrestrained thermal movement and to prevent contact of metal panels with penetrations.

  4. Metal Flashing:

    1. Notch and fold down flashing running parallel to panel ribs to fit into space between ribs.

    2. Make overlaps minimum 4 inches and in conformance with Section 07 60 00.

  5. Cutting and Fitting:

    1. Make neat, square, and true.

    2. Saw-cut panels, de-burr edges, and clean filings from adjacent surfaces.

    3. Do not cut with torch.

    4. Use high tooth-count saw blade designed to cut architectural sheet metal.

3.7 FIELD QUALITY CONTROL

  1. Manufacturer’s Field Services:

  2. Water test weather resistive barrier prior to installation of cladding.

3.8 ADJUSTING

  1. Correct identified defects and irregularities.

  2. Replace damaged, soiled, and discolored work.

3.9 CLEANING

  1. Leave installation clean and free from residue and debris from work of this Section.

3.10 PROTECTION

  1. Take measures to protect metal panel installations from construction activities for duration of Project. Do not permit activities that may result in gouging, scratching, or denting of metal panels and/or flashings.

END OF SECTION

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