Copyright 2015 AIA MasterSpec Premium 03/15

PRODUCT MASTERSPEC LICENSED BY ARCOM TO METL-SPAN.

This Product MasterSpec Section is licensed by ARCOM to Metl-Span ("Licensee").

This Product MasterSpec Section modifies the original MasterSpec text.

Revisions made to the original MasterSpec text are made solely by the Licensee and are not endorsed by, or representative of the opinions of, ARCOM or The American Institute of Architects (AIA). Neither AIA nor ARCOM are liable in any way for such revisions or for the use of this Product MasterSpec Section by any end user. A qualified design professional should review and edit the document to suit project requirements.

For more information, contact Metl-Span, Lewisville, TX 75057; Phone: (972) 221-6656; Fax (972) 436-0648; Website: www.metlspan.com; Email: .

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Copyright 2015 by The American Institute of Architects (AIA)

Exclusively published and distributed by Architectural Computer Services, Inc. (ARCOM) for the AIA

SECTION 074116 - INSULATED METAL ROOF PANELS

TIPS:

To view non-printing Editor's Notes that provide guidance for editing, click on Masterworks/Single-File Formatting/Toggle/Editor's Notes.

To read detailed research, technical information about products and materials, and coordination checklists, click on Masterworks/Supporting Information.

Revise this Section by deleting and inserting text to meet Project-specific requirements.

This Section uses the term "Architect." Change this term to match that used to identify the design professional as defined in the General and Supplementary Conditions.

Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.

PART 1 - GENERAL

1.1  RELATED DOCUMENTS

Retain or delete this article in all Sections of Project Manual.

  1. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division01 Specification Sections, apply to this Section.

1.2  SUMMARY

  1. Section includes insulated metal roof panels.
  2. Related Sections:

Retain subparagraphs below to cross-reference requirements Contractor might expect to find in this Section but are specified in other Sections.

  1. Section074293 "Soffit Panels" for metal panels used in horizontal soffit applications.
  2. Section077253 "Snow Guards" for prefabricated devices designed to hold snow on the roof surface, allowing it to melt and drain off slowly.

1.3  PREINSTALLATION MEETINGS

Retain "Preinstallation Conference" Paragraph below if Work of this Section is extensive or complex enough to justify a conference.

  1. Preinstallation Conference: Conduct conference at [Project site] <Insert location>.

If needed, insert list of conference participants not mentioned in Section13100 "Project Management and Coordination."

Retain subparagraphs below if additional requirements are necessary; revise to include more specific information about conference.

  1. Meet with Owner, Architect, Owner's insurer if applicable, metal panel Installer, metal panel manufacturer's representative, structural-support Installer, and installers whose work interfaces with or affects metal panels, including installers of roof accessories and roof-mounted equipment.
  2. Review and finalize construction schedule and verify availability of materials, Installer's personnel, equipment, and facilities needed to make progress and avoid delays.
  3. Review methods and procedures related to metal panel installation, including manufacturer's written instructions.
  4. Examine support conditions for compliance with requirements, including alignment between and attachment to structural members.
  5. Review structural loading limitations of purlins and rafters during and after roofing.
  6. Review flashings, special details, drainage, penetrations, equipment curbs, and condition of other construction that affect metal panels.
  7. Review governing regulations and requirements for insurance, certificates, and tests and inspections if applicable.
  8. Review temporary protection requirements for metal panel systems during and after installation.
  9. Review of procedures for repair of metal panels damaged after installation.
  10. Document proceedings, including corrective measures and actions required, and furnish copy of record to each participant.

1.4  ACTION SUBMITTALS

  1. Product Data: For each type of product.
  2. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for each type of panel and accessory.
  3. Include preparation instructions and recommendations.
  4. Include information on installation methods.
  5. LEED Submittals:
  6. SS - Sustainable Sites:
  7. SS Credit 7.2: Heat Island Effect.

1)  Solar Reflectance Index (SRI) for low sloped and/or steep roof application - any color from Metl-Span standard color chart.

  1. EA - Energy and Atmosphere:
  2. EA Credit 1: Optimize Energy Performance.

1)  Demonstrating percentage of performance improvement that meets or surpasses ASHRAE/IESNA Standard 90.1-2004.

  1. EA Credit 2: Minimum Energy Performance.

1)  Insulated metal roof panels will contribute to higher energy efficiency of a building that must comply with a 10 percent improvement in the performance compared to benchmark rating based on ASHRAE/IESNA Standard 90.1-2007 (with errata but without addenda) in EA Prerequisite 2.

  1. MR - Material Resource:
  2. MR Credit 1.1 and 1.2: Building Reuse.

1)  Maintain Existing Walls, Floors & Roof

2)  Maintain Interior Non-Structural Elements.

  1. MR Credit 3: Materials Reuse.
  2. MR Credit 4: Recycled Content.

1)  Percentage weight of post-consumer and pre-consumer recycled content. Use materials with recycled content.

2)  Recycled content value of product assembly by weight.

3)  Indicate total value (cost) of each product used.

  1. MR Credit 6: Rapidly Renewable Materials.

1)  The foam core in the wall panels contains a component that contributes to one point for using rapidly renewable buildings materials and products for 2.5 percent of the total value of all building materials and products used in the project (based on cost).

  1. IEQ - Indoor Environmental Quality:
  2. IEQ Credit 4.1: Low-Emitting Materials - Adhesives and Sealants.

1)  Product data on adhesives and sealants to comply with standards of South Coast Air Quality Management District Rule #1168.

2)  Product data for paint and coatings have no VOC's.

  1. WE - Water Efficiency:
  2. WE Credit 1 and 2: Water Efficient Landscaping and Innovative Wastewater Technology.

1)  Demonstrated reduction in irrigation water by 50 percent from calculated mid-summer base line case.

2)  Demonstrated reduction in potable used for building sewage conveyance by 50 percent.

  1. WE Credit 3: Water Use Reduction.

1)  The CFR roof panels integrate into a building’s rainwater harvesting system, can contribute to points for employing a strategy that in aggregate uses at least 20 percent less water than the water use baseline calculated for the building (not including irrigation) after meeting the Energy Policy Act of 1992 fixture performance requirements in WE Credit 3.

  1. ID - Innovation in Design:
  2. ID Credits 1.1 to 1.4.

1)  The CFR roof panel integrated into a building's overall design can contribute to points if the building's design team applies strategies or measures that demonstrate performance above the requirements in categories and/or innovative performance not specifically addressed by LEED in ID Credits 1.1 to 1.4.

  1. Shop Drawings:
  2. Include fabrication and installation layouts of metal panels; details of edge conditions, joints, panel profiles, corners, anchorages, attachment system, trim, flashings, closures, and accessories; and special details.
  3. Accessories: Include details of the flashing, trim, and anchorage systems, at a scale of not less than 1-1/2 inches per 12 inches (1:10).

Retain "Samples for Initial Selection" and "Samples for Verification" paragraphs below for two-stage Samples.

  1. Samples for Initial Selection: For each type of metal panel indicated with factory-applied color finishes.
  2. Include similar Samples of trim and accessories involving color selection.
  3. Samples for Verification: For each type of exposed finish required, prepared on Samples of size indicated below.
  4. Metal Panels: 12 inches (305 mm) long by actual panel width. Include clips, fasteners, closures, and other metal panel accessories.

1.5  INFORMATIONAL SUBMITTALS

Coordinate "Qualification Data" Paragraph below with qualification requirements in Section014000 "Quality Requirements" and as may be supplemented in "Quality Assurance" Article.

  1. Qualification Data: For Installer.
  2. Product Test Reports: For each product, for tests performed by a qualified testing agency.
  3. Field quality-control reports.
  4. Sample Warranties: For special warranties.
  5. Buy American Confirmation: Submit documentation certifying that products comply with provisions of the Buy American Act 41 U.S.C 10a-10d.

1.6  CLOSEOUT SUBMITTALS

  1. Maintenance Data: For metal panels to include in maintenance manuals.

1.7  QUALITY ASSURANCE

  1. Installer Qualifications: Installed by a contractor with a minimum of five (5) years experience with this type of construction, and documentation indicating successful completion of contracts for projects of similar size, scope, and materials.
  2. Mockups: Build mockups to verify selections made under Sample submittals and to demonstrate aesthetic effects and set quality standards for fabrication and installation.

Retain first subparagraph below for large-scale mockup. Indicate portion of roof represented by mockup on Drawings or draw mockup as separate element.

  1. Build mockup of typical roof area and eave[,including fascia,] [and soffit] as shown on Drawings; approximately [48 inches (1200 mm)] [12 feet (3.5m)] <Insert dimension> square by full thickness, including attachments[,underlayment,] and accessories.

Retain first subparagraph below for limited mockups.

  1. Build mockups for typical roof area only, including accessories.
  2. Size: [12 feet (3.5m) long by 6 feet (1.75m)] <Insert dimension>.
  3. [Each type of exposed seam and seam termination] <Insert mockup item>.
  4. Approval of mockups does not constitute approval of deviations from the Contract Documents contained in mockups unless Architect specifically approves such deviations in writing.

Retain subparagraph below if the intention is to make an exception to the default requirement in Section014000 "Quality Requirements" for demolishing and removing mockups.

  1. Approved mockups may become part of the completed Work if undisturbed at time of Substantial Completion.

1.8  DELIVERY, STORAGE, AND HANDLING

  1. Protect products of metal panel system during shipping, handling, and storage to prevent staining, denting, deterioration of components, and other damage.
  2. Deliver, unload, store, and erect metal panels and accessory items in a manner to prevent bending, warping, twisting, and surface damage.
  3. Store panels in accordance with manufacturer's written instructions.
  4. Shield foam-insulated metal wall panels from direct sunlight until installation.
  5. Store products off the ground, with panels sloped for drainage and covered to protect factory finishes from damage. Stack bundles no more than two high.

1.9  FIELD CONDITIONS

  1. Weather Limitations: Proceed with installation only when existing and forecasted weather conditions permit assembly of metal panels to be performed according to manufacturers' written instructions and warranty requirements.

1.10  COORDINATION

  1. Coordinate sizes and locations of roof curbs, equipment supports, and roof penetrations with actual equipment provided.
  2. Coordinate metal panel installation with rain drainage work, flashing, trim, construction of soffits, and other adjoining work to provide a leakproof, secure, and noncorrosive installation.

1.11  WARRANTY

When warranties are required, verify with Owner's counsel that special warranties stated in this article are not less than remedies available to Owner under prevailing local laws.

  1. Warranty: Manufacturer's written limited warranty providing panels to be free from defects in materials and workmanship, excluding coil coatings (paint finishes) that are covered under separate warranty.

Verify available warranties and warranty periods for metal panels.

  1. Warranty Period: Two years from date of Substantial Completion.

Warranty on Panel Finishes: Manufacturer's standard form in which manufacturer agrees to repair finish or replace metal panels that show evidence of deterioration of factory-applied finishes within specified warranty period.Finish warranty in subparagraph below is for Two-Coat Fluoropolymer, Non-Metallic. Contact manufacturer for warranty information of other finishes.

  1. Finish Warranty Period for Two-Coat Fluoropolymer, Non-Metallic:
  2. 40 year limited warranty from date of Substantial Completion on the exterior paint finish for adhesion to the metal substrate.
  3. 30 year limited warranty from date of Substantial Completion on the exterior paint finish for chalk and fade.

Insert requirements for special weathertightness warranty if needed; panel manufacturers do not typically offer such warranties.

PART 2 - PRODUCTS

See Editing Instruction No.1 in the Evaluations for cautions about named manufacturers and products. For an explanation of options and Contractor's product selection procedures, see Section016000 "Product Requirements."

2.1  PERFORMANCE REQUIREMENTS

Retain "Recycled Content" Paragraph below to specify recycled content if required. An alternative method of requiring recycled content is to retain requirement in Project's Division01 sustainable design requirements Section that gives Contractor the option and responsibility to determine how recycled content requirements will be met.

  1. Recycled Content: Postconsumer recycled content plus one-half of preconsumer recycled content not less than <Insert value> percent.

"Solar Reflectance Index (SRI)" Paragraph below applies to LEEDv4. First of each pair of options is minimum for roofs with slopes of 2:12 or less; second of each pair of options is for roofs with slopes steeper than 2:12.

  1. Solar Reflectance Index (SRI): Three-year-aged SRI not less than [64] [32] or initial SRI not less than [82] [39] when calculated according to ASTME1980, based on testing identical products by a qualified testing agency.

Retain first "Energy Performance" Paragraph below for roofs that must comply with the EPA/DOE's ENERGY STAR requirements. The EPA/DOE's ENERGY STAR "Roof Product List" is available in PDF at www.energystar.gov.

  1. Energy Performance: Provide roof panels that are listed on the EPA/DOE's ENERGY STAR "Roof Product List" for [low] [steep]-slope roof products.

Retain "Energy Performance" Paragraph below for roofs that must comply with local "cool-roof" energy legislation; verify requirements with authorities having jurisdiction. Example and options below are for low-slope roofs that must comply with prescriptive approach of CCR Title24 (California Building Standards Code).

  1. Energy Performance: Provide roof panels according to one of the following when tested according to CRRC-1:
  2. Three-year, aged solar reflectance of not less than [0.55] <Insert value> and emissivity of not less than [0.75] <Insert value>.
  3. Three-year, aged Solar Reflectance Index of not less than [64] <Insert value> when calculated according to ASTME1980.
  4. Structural Performance: Provide metal panel systems capable of withstanding the effects of the following loads, based on testing according to ASTME72:
  5. Wind Loads: As indicated on Drawings.
  6. Other Design Loads: [As indicated on Drawings] <Insert loads>.
  7. Deflection Limits: For wind loads, no greater than [1/180] [1/240] <Insert deflection> of the span.
  8. Insert serviceability requirements>.

ASTME1680 in "Air Filtration" Paragraph below has replaced ASTME283 for testing metal roof panels; retain option to allow products to be tested according to ASTME283.