2004 MASTER FORMAT™ SECTION 07 41 13
(Previously Section 07410)

Guide Specification: Metl-Span CFR Roof Panels with Integrated Insul-Solar Laminate PV System

PART 1 – GENERAL

1.1 SUMMARY

  1. Pre-insulated metal panel cladding integrated with thin-film solar laminate fused to the surface of the roofing panel substrate where indicated on the drawings. Also included, are all necessary trims, fasteners and sealants, BIPV modules and ridge cap and/or cable tray(s) as required for a weathertight installation. Panels shall be secured to the structure with concealed clips and fasteners in the sidejoints.
  2. Steel faced factory foamed-in-place profiled panels.
  3. PV Solar Laminate modules are integrated with the standing seam roof and are part of Specification Section 07 41 13 (Previously Section 07410).
  4. Electrical Components of the System and wiring are by the Electrical Subcontractor.
  5. Sealants between panels and their intersection.

1.2 RELATED SECTIONS

  1. Section 07 62 00 (previously 07620) – Sheet Metal Flashing and Trim
  2. Section 07 41 00 (previously 07410) - Metal Roof Panels
  3. Section 07 92 00 (previously 07920) – Joint Sealants
  4. Section 48 14 00 (no previous section) – Solar Power Generation Equipment
  5. Section 26 31 00 (no previous section) – Photovoltaic Collectors

1.3 REFERENCES

  1. ASTM A 653 – Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process.
  2. ASTM A 792 – Standard Specification for Steel Sheet, Aluminum-Zinc Alloy Coated Steel by the Hot-Dip Process.
  3. ASTM C 518 – Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus.
  4. ASTM D 1002 – Standard Test Method for Apparent Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens by Tension Loading
  5. ASTM E 72 – Standard Test Methods of Conducting Strength Tests of Panels for Building Construction
  6. ASTM E 84 – Standard Test Method for Surface Burning Characteristics of Building Materials.
  7. ASTM E 1680 – Standard Method for Rate of Air Leakage through Exterior Metal Roof Panel Systems.
  8. ASTM E 1646 – Standard Test Method for Water Penetration of Metal Roof Panel Systems by Uniform Static Air Pressure Difference.
  9. CAN/ULC S102 – Standard Method of Test for Surface Burning Characteristics of Building Materials and Assemblies.
  10. CAN/ULC S126 – Standard Method of Test for Fire Spread Under Roof-Deck Assembly.
  11. NEC Article 690 – Solar Photovoltaic Systems.
  12. NEC Article 250 – Grounding.
  13. NEC Article 110 – Requirements for Electrical Installations
  14. IEEE 1262 – PV Module Qualifications for Performance and Reliability.
  15. IEEE 929 – Standard for Static Inverters and Charge Controllers for Use in Photovoltaic Power Systems.

1.4 PERFORMANCE REQUIREMENTS

  1. Structural Tests: The design load/deflection criteria shall be verified from tests per ASTM E 72 “Air Bag Method” using a 20 psf (.96 kPa) simulated wind load. A deflection limit of L/240 shall apply to roof panel.
  2. Thermal Transmission: Testing in accordance with ASTM C 518, “measurement of steady state thermal transmission”, the panels shall provide a K-factor of .140 btu/sf/hr/deg. F at 73° F. (23° C) mean temperature (air films are not included).
  3. Vapor Barrier
  4. Air Infiltration: Air infiltration shall not exceed .0023 cfm per square foot of wall area when tested per ASTM E 1680 at a static pressure of 12.0 psf (.576 kPa).
  5. Static Water Penetration: There shall be no uncontrolled water penetration through the panel joints at a static pressure of 12.0 psf (.96 kPa) when tested per ASTM E 1646.
  6. Fire
  7. Factory Mutual Research Corporation (FMRC) Standard 4880, 50’ (15.24 m) High Corner Test for Unlimited Height Structures: The panel assembly shall not support a self-propagating fire which reaches any of the limits of the 50’(15.24 m) high corner test structure as evidenced by flaming or material damage of the ceiling of the assembly. Note: Approval is applicable to structures of unlimited height.
  8. Factory Mutual Research Corporation (FMRC) Standard 4471: The panel shall meet a Class 1A fire classification and a Class SH Hailstorm classification.
  9. Surface Burning Characteristics: The insulated core shall have been tested in accordance with ASTM E 84 & CAN/ULC S102 for surface burning characteristics. The core shall have a maximum flame spread of 25 and a maximum smoke developed rating of 450.
  10. Fire Spread under Roof-Deck Assemblies: The insulated core shall have been tested in accordance with CAN/ULC S126 standard Method of Test for Fire Spread under Roof-Deck Assemblies.
  11. Wind Resistance
  12. The CFR roof panel shall be UL 90 rated in accordance with UL 580 test for wind uplift performance of roof assemblies, and UL 166 rated in accordance with UL 1897 test for wind uplift performance of roof membranes.
  13. The CFR roof panel shall be Factory Mutual 4471 approved and have FM 1-90 windstorm resistance approval.

1.5 SUBMITTALS

  1. Submit under provisions of Section 01 33 00 (previously 01300).
  2. Manufacturer’s data sheets on each product to be used, including:
  3. Preparation instructions and recommendations.
  4. Storage and handling requirements and recommendations.
  5. Material type, metal thickness and finish.
  6. Installation methods.
  7. Shop Drawings: Including elevations, fastening patterns, sections of each condition and details as required.
  8. Selection Samples: For each finish product specified, two complete sets of color chips representing manufacturer’s full range of available colors and patterns.
  9. Panel Sample: Submit 1’ (305 mm) high by full width sample panel for each profile specified indicating the metal, texture and finish.
  10. Manufacturer’s Certificates: Certify products meet or exceed specified requirements.

1.6 QUALITY ASSURANCE

  1. Manufacturer Qualifications: Company specializing in manufacturing factory foamed-in-place insulated metal panels with a minimum documented experience of ten (10) years.
  2. Installer Qualifications: Company specializing in installation of the products specified for projects of similar size and scope with minimum five (5) years documented experience.
  3. Standing Seam Roof Contractor and Architect shall coordinate on locations and appearance of the PV modules and cable trays. All locations must be approved by the Architect prior to installation.
  4. Standing Seam Roof Manufacturer shall be responsible for manufacturing and installing Insul-Solar Laminate PV System to CFR Roof panel.
  5. Standing Seam Roof Contractor shall be responsible for installing the Insul-Solar Standing Seam Roof System, including cable tray(s), as per drawings for any combination of (1.5kw, 3kw, 5kw, 10kw, 15kw, 30kw, 60kw or 120kw) PV Systems to the structure
  6. The Electrical Contractor shall provide access to equipment for maintenance and service as required by the manufacturer’s instructions and/or applicable codes.
  7. The Electrical Contractor shall coordinate with the Architect and Electrical Engineer on locations and appearance of all exposed equipment, including but not limited to conduit, inverters, disconnects, wire ways, and control and monitoring equipment. All locations must be approved by the Architect and Electrical Engineer prior to installation.
  8. All Electrical work to be done by a Licensed Electrical Contractor per Specification Section 48 14 00.

1.7 SUBSTITUTIONS

  1. Materials, accessories and testing specified shall establish the minimum level of quality, performance, dimension and appearance required of any substitution.
  2. No substitution will be considered unless a written request to the specifying architect is received for approval at least ten (10) days prior to the established bid date. Evidence shall be submitted to demonstrate equivalency to the products and performance levels specified. Laminated panels shall not be considered acceptable substitutes for the specified foamed-in-place panels.
  3. A complete description of the substitution including details referenced to the roof panel shown on the contract drawings.
  4. Independent test reports verifying compliance with specified performance requirements.
  5. A detailed listing of each specification item with which the substitution does not fully comply.
  6. The manufacturer or roof panel contractor proposing the substitution shall pay the costs of any other subcontractor affected by the proposed substitution.

1.8 DELIVERY STORAGE AND HANDLING

  1. Store products in manufacturer’s unopened packaging until ready for installation.
  2. Store products off the ground, with panels sloped for drainage and covered to protect factory finishes from damage.

1.9 WARRANTY

  1. Manufacturer’s Warranty: Manufacturer’s two (2) year limited warranty that panels are free from defects in materials and workmanship, beginning from the date of shipment of panels, but excluding coil coatings (paint finishes) covered under a separate warranty.
  2. The standing seam metal roof contractor shall issue a separate one (1) year warranty against defects in installed materials and workmanship, beginning from the date of substantial completion of the installation.
  3. The standing seam metal roof contractor shall provide a 20 year warranty on the electrical performance of the PV modules, and shall warrant that the BIPV Standing Seam Panels will be free from manufacturing defects for a period of two (2) years from product shipment date.
  4. Manufacturer warrants that its CFR Insul-Solar Laminate PV System shall be free from defects in materials and workmanship under normal application, use, installation, operation and service for a period oftwo (2) years from the date of sale to the end user.
  5. Manufacturer warrants that its CFR Insul-Solar Laminate PV System shall (i) during the first ten (10) years from the date of sale, produce at least 92% of the minimum power output rating, (ii) during the first twenty (20) years from the date of sale produce at least 84% of the minimum power out put rating, and (iii) during twenty-five (25) years from the date of sale, produce at least 80% of the minimum power output rating, where the minimum power output rating is the rated power minus the applicable tolerance, as specified in the PV Product technical datasheet.
  6. Submit exterior paint manufacturer’s forty (40) year limited warranty on paint finish against cracking, peeling, chalk and color change.

Note: No warranty is offered for the interior painted surface of the panel.

PART 2 – PRODUCTS

2.1 MANUFACTURER

  1. Acceptable Manufacturer: Metl-Span, LLC; 1720 Lakepointe Dr., Ste 101, Lewisville, TX 75057; Toll-Free (877) 585-9969; Fax: (972) 420-9382; E-mail: ; Web site: http://www.metlspan.com
  2. Requests for substitutions will be considered in accordance with provisions of Section 01 23 00 (previously 01230).

2.2 PANEL DESIGN

  1. Construction– Pre-insulated metal roof panels shall have roll-formed exterior and interior faces chemically bonded to a continuously foamed-in-place, zero ODP polyurethane core. The steel faces shall have a stucco embossed texture. Laminated panels shall not be accepted. The CFR roof panels shall be factory notched and swaged to facilitate endlapping of the panels, and the endlap extensions shall be factory cut and have all foamremoved. Field notching, swaging and cutting of endlapextensions shall not be accepted. Endlaps shall also have factory installed backer plates to ensure proper fit-up of the exterior faces for maximum watertightness.
  2. Panel Units shall be –(select one or more)
  3. CFR-42 Roof Panel, (42"/106.68 cm module width), with a Light Mesa pattern between the seams, (2", 2½", 3", 4", 5", 6") thick (5.08 cm, 6.35 cm, 7.62 cm, 10.16 cm, 12.7 cm, 15.24 cm) thick (select one), with a Mesa or Light Mesa Profiled liner.
  4. CFR-36 Roof Panel (36"/91.44 cm module width), with a Light Mesa pattern between the seams, (2", 2½", 3", 4", 5", 6") thick (5.08 cm, 6.35 cm, 7.62 cm, 10.16 cm, 12.7 cm, 15.24 cm) thick (select one), with a Mesa or Light Mesa profiled liner.
  5. Side Connections –Theside joint of the CFR roof panel shall have a tongue and groove interlock at the base of the panel and a 2" (5.08 cm) mechanically closed standing seam at the exterior surface of the panel. The CFR roof panel shall be attached to the structure with a clip and fasteners concealed within the side joint of the panel and the installation shall be completely from the exterior side of the building envelope. Through fasteners, into the ribs or flat areas of the panel from the exterior side are not acceptable.
  6. Integrated Insul-Solar Laminate PV System –PV modulesshall be IEEE 1262 compliant and listed to UL Standard 1703. The PV system shall be of the grid-connected type and shall not include battery/backup storage or secondaryelectrical generation devices. PV system shall feed AC power into the local services when solar energy is available and shall immediately disconnect from the grid upon loss ofgrid power to the services as per IEEE and local utility regulations.
  7. Sealants –All sealants shall be field applied to ensure maximum watertightness.

2.3 MATERIALS

  1. The exterior face gauge shall be (24 Ga., 22 Ga.) thick (select one), G-90 galvanized steel conforming to ASTM A-653 and/or 50% aluminum-zinc coated steel conforming to ASTM A-792, minimum grade 50, with a stucco embossed texture.
  2. The interior liner shall be (26 Ga., 24 Ga., 22 Ga.) thick (select one), G-90 galvanized steel conforming to ASTM A-653and/or 50% aluminum-zinc coated steel conforming to ASTM A-792, minimum grade 33, with a stucco embossed texture.
  3. Foam core shall be continuously foamed-in-place, zero ODP polyurethane.
  4. Flashing and trim shall be brake-formed sheet metal in the same thickness and finish to match the panels.

2.4 FINISHES

  1. Exterior face sheet shall be treated with a nominal 0.2 mil (5 microns) base primer, followed by a nominal 0.7 mil (17.5 microns) finish coat of full strength 70% PVF2 fluoropolymer in manufacturer's standard colors.
    Note: Thick mil coatings for aggressive environments are available at extra cost. Siliconized polyester is also available. Consult the factory or website at www.metlspan.com for complete information.
  2. The interior sheet shall be a nominal 0.2 mil (5 microns) primer followed by a nominal 0.7 mil (17.5 microns) polyester coating in USDA compliant Igloo White.

PART 3 – EXECUTION

3.1 EXAMINATION

  1. Panel installer shall examine all structural steel before beginning installation to ensure that all supporting members are straight, level, plumb, properly braced and satisfactory for panel installation.
  2. Standing Seam Metal Roof Contractor shall offer safe protection to Electrical Contractor to connect BIPV module connectors in the ridge and/or cable tray(s).
  3. The Standing Seam Metal Roof Contractor shall notify the Construction manager a minimum of 5 days before closing in of Ridge Cap and/or Cable tray(s) so the Electrical Contractor can be notified to complete wiring on roof.
  4. Do not begin installation until unsatisfactory conditions are corrected.
  5. Start of installation shall signify structure and adjacent conditions as being proper and acceptable.

3.2 INSTALLATION

  1. Install in accordance with manufacturer’s instructions and recommendations including approved shop drawings, installation guidebook and manufacturer’s handbook of construction details.
  2. Install panel as indicated on drawings, accurate in size, square, and free from distortion or defects.
  3. Install flashing and trim true and in proper alignment.
  4. Install sealants where indicated to clean dry surfaces only without skips or voids, to ensure weathertightness and integrity of the vapor barrier.
  5. Fall arrest protection per OSHA 1926 Subpart M shall be provided for all work on top of BIPV Standing Seam Roof and Standing Seam Contractor shall offer safe protection to Electrical Contractor to connect BIPV module connectors in the Ridge and/or cable tray(s).
  6. The Standing Seam Metal Roof Contractor shall notify the Construction Manager a minimum of 5 days before closing in said Ridge Cap and/or cable tray(s) so the Electrical Contractor can be notified to complete all wiring on said roof.
  7. Electrical Contractor shall provide final and complete commissioning of the PV system.

3.3 DAMAGED MATERIAL