07 41 13 - Insulated Metal Roof Panels.pdf

RENOVATE BLDG 204 CATH LAB II

Project #621-22-121

INSULATED METAL ROOF PANELS

SECTION 07 41 13- 1

SECTION 07 41 13

PART 1 - GENERAL

1.1 SECTION INCLUDES

A. Foamed-insulation-core standing seam metal roof panels, with related metal trim and accessories. The basis of design for this specification is Metl-

Span™ CFR Insulated Metal Roof Panel with PIR.

1.2 RELATED REQUIREMENTS

A. Division 05 Section "Structural Steel Framing" for steel framing supporting metal panels.

B. Division 05 Section "Cold-Formed Metal Framing" for cold-formed metal framing supporting metal panels.

C. Division 07 Section "Metal Wall and Roof Panels" for factory-formed metal wall, roof, and soffit panels.

D. Division 07 Section "Sheet Metal Flashing and Trim" for sheet metal copings, flashings, reglets and roof drainage items in addition to items specified in this Section.

E. Division 07 Section "Manufactured Roof Specialties" for manufactured copings, reglets, and roof drainage items in addition to items specified in this Section.

F. Division 07 Section "Roof Accessories" for roof hatches, smoke vents, equipment curbs, and equipment supports.

G. Division 07 Section "Joint Sealants" for field-applied Joint Sealants.

H. Division 13 Section "Metal Building Systems" for steel framing supporting metal panels.

1.3 REFERENCES

A. American Society of Civil Engineers (ASCE): www.asce.org/codes-standards:

1. ASCE 7 - Minimum Design Loads for Buildings and Other Structures.

B. ASTM International (ASTM): www.astm.org:

1. ASTM A 653 - Specification for Steel Sheet, Zinc-Coated (Galvanized) or

Zinc-Iron Alloy-

Coated (Galvannealed) by the Hot-Dip Process.

2. ASTM A 755 - Specification for Steel Sheet, Metallic Coated by the Hot-Dip

Process and

Prepainted by the Coil-Coating Process for Exterior Exposed Building

Products.

3. ASTM A 792 - Standard Specification for Steel Sheet, 55% Aluminum-Zinc

Alloy-Coated by the Hot-Dip Process.

4. ASTM A 924 – General Requirements for Steel Sheet, Metallic-Coated by the

Hot-Dip Process.

5. ASTM C 1363 - Standard Test Method for Thermal Performance of Building

Materials and Envelope Assemblies by Means of a Hot Box Apparatus

6. ASTM D 1621 – Compressive Properties of Rigid Cellular Plastics.

7. ASTM D 1622 – Apparent Density of Rigid Cellular Plastics.

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8. ASTM D 1623 – Standard Test Method for Tensile and Tensile Adhesive

Properties of

Rigid Cellular Plastics.

9. ASTM D 6226 - Standard Test Method for Open Cell Content of Rigid Cellular

Plastics

10. ASTM C 518 - Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Heat Flow Meter

Apparatus.

11. ASTM D 2244 - Test Method for Calculation of Color Differences from

Instrumentally

Measured Color Coordinates.

12. ASTM D 4214 - Test Methods for Evaluating Degree of Chalking of Exterior

Paint Films.

13. ASTM E 72 - Standard Test Methods of Conducting Strength Tests of Panels for Building

Construction.

14. ASTM E 84 - Test Methods for Surface Burning Characteristics of Building

Materials.

15. ASTM E 108 – Standard Test Methods for Fire Tests of Roof Coverings

16. ASTM E 1592 - Standard Test Method for Structural Performance of Sheet

Metal Roof and

Siding Systems by Uniform Static Air Pressure Difference.

17. ASTM E 1646 - Standard Test Method for Water Penetration of Exterior

Metal Roof Panel

Systems by Uniform Static Air Pressure Difference.

18. ASTM E 1680 - Standard Test Method for Rate of Air Leakage through

Exterior Metal Roof

Panel Systems.

19. ASTM E 1980 - Practice for Calculating Solar Reflectance Index of

Horizontal and Low-

Sloped Opaque Surfaces.

20. ASTM E 2140 – Standard Test Method for Water Penetration of Metal Roof

Panel Systems by Static Water Pressure Head.

C. Cool Roof Rating Council (CRRC):

www.coolroofs.org/productratingprogram.html:

1. CRRC-1-2016 – CRRC Product Rating Program.

D. National Fire Protection Association (NFPA):

1. NFPA 259 – Test Method for Potential Heat of Building Materials.

2. NFPA 286 – Fire Test of Evaluating Conditions of Wall and Ceiling Finish to Roof Fire Growth.

E. FM Global (FM): www.fmglobal.com:

1. ANSI/FM 4471 - Approval Standard for Class 1 Panel Roofs.

2. ANSI/FM 4880 - American National Standard for Evaluating Insulated Wall and Roof/Ceiling Assemblies.

F. Canadian Standards Association (CSA)

1. CAN/ULC S102 – Standard Method of Test for Surface Burning Characteristics of Building

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Materials and Assemblies.

2. CAN/ULC S107 – Method of fire test of roof coverings.

1.4 QUALITY ASSURANCE

A. Manufacturer/Source: Provide metal panel assemblies and accessories from a single manufacturer approved under an accredited third-party quality control program

B. Manufacturer Qualifications: Approved manufacturer listed in this Section with minimum ten years’ experience in the manufacturing of similar products and successful use in similar applications.

1. Approval of Comparable Products: Submit the following in accordance with project substitution requirements, within time allowed for substitution review:

a. Product data, including certified independent test data indicating compliance with requirements.

b. Samples of each component.

c. Sample submittal from similar project.

d. Project references: Minimum of five installations not less than five years old, with Owner and Architect contact information.

e. Sample warranty.

f. Certificate from an accredited third-party Quality Control Program.

General Requirements

1.5 Approved manufacturers must meet separate requirements of Submittals

Article.

A. Installer Qualifications: Experienced Installer with minimum of five years’ experience with successfully completed projects of a similar nature and scope.

1. Installer's Field Supervisor: Experienced mechanic certified by metal panel manufacturer supervising work on site whenever work is underway.

B. Buy American Compliance: Materials provided under work of this Section shall comply with the following requirements:

1. Buy American Act of 1933 BAA-41 U.S.C §§ 10a – 10d.

2. Buy American provisions of Section 1605 of the American Recovery and

Reinvestment Act of 2009 (ARRA).

1.6 ADMINISTRATIVE REQUIREMENTS

A. Preinstallation Meeting: Prior to erection of framing, conduct

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preinstallation meeting at site attended by Owner, Architect, metal panel installer, metal panel manufacturer's technical representative, inspection agency, and related trade contractors.

1. Coordinate building framing in relation to metal panel system.

2. Coordinate openings and penetrations of metal panel system.

3. Coordinate work of Division 07 Sections "Roof Specialties" and "Roof

Accessories" and openings and penetrations and manufacturer's accessories with installation of metal panels.

1.7 ACTION SUBMITTALS

A. Product Data: Manufacturer’s data sheets for specified products.

B. Samples for Initial Selection: For each exposed product specified including sealants. Provide representative color charts of manufacturer's full range of colors.

1.8 INFORMATIONAL SUBMITTALS

A. Product Test Results: Indicating compliance of products with requirements.

B. Qualification Information: For Installer firm and Installer’s field supervisor.

C. Buy American Certification: Manufacturers' letters of compliance acceptable to authorities having jurisdiction, indicating that products comply with requirements.

D. Warranty:

1. Submit manufacturer’s written two (2) year limited warranty providing panels to be free from defects in materials and workmanship, beginning from the date of substantial completion excluding coil coatings (paint finishes) that are covered under a separate warranty.

2. The installation contractor shall issue a separate warranty against defects in installed materials and workmanship, beginning from the date of substantial completion of the installation.

1.10 CLOSEOUT SUBMITTALS

A. Maintenance data.

B. Manufacturer's Warranty: Executed copy of manufacturer's warranty.

1.11 DELIVERY, STORAGE, AND HANDLING

A. Protect products of metal panel system during shipping, handling, and storage to prevent staining, denting, deterioration of components, or other damage. Protect panels and trim bundles during shipping. Protect painted surfaces with a protective covering before shipping.

1. Deliver, unload, store, and erect metal panels and accessory items without

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misshaping panels or exposing panels to surface damage from weather or construction operations.

2. Store in accordance with Manufacturer's written instructions. Provide wood collars for stacking and handling in the field.

3. Shield foam insulated metal panels from direct sunlight until nstallation.

1.12 WARRANTY

A. Special Manufacturer’s Warranty: Submit Manufacturer’s two (2) year limited warranty providing panels to be free from defects in materials and workmanship, beginning from the date of substantial completion excluding coil coatings (paint finishes) that are covered under a separate warranty.

B. The installation contractor shall issue a separate warranty against defects in installed materials and workmanship, beginning from the date of substantial completion of the installation.

C. Special Panel Finish Warranty: Submit Manufacturer’s limited warranty on the exterior paint fin-ish for adhesion to the metal substrate and limited warranty on the exterior paint finish for chalk and fade.

Coordinate chalk and fade performance with applicable Metl-Span finish and color found at http://www.metlspan.com/finishwarranties.html.

1. Fluoropolymer Two-Coat System:

a. Color fading in excess of [5] for copper, silver metallic and bright red;

Hunter units per ASTM D 2244.

b. Chalking in excess of [6] for copper, silver metallic and bright red or

[8] rating per ASTM D 4214.

c. Failure of adhesion, peeling, checking, or cracking.

2. Modified Silicone-Polyester Two-Coat System:

a. Color fading in excess of [5] for crimson red; Hunter units per ASTM D

2244.

b. Chalking in excess of [7] for crimson red or [8] rating per ASTM D 4214.

c. Failure of adhesion, peeling, checking, or cracking.

3. Other finish options available; additional information can be found at metlspan.com or contact Metl-Span at 972.221.6656.

PART 2 - PRODUCTS

2.1 MANUFACTURER

A. Basis of Design Manufacturer: Metl-Span, a Nucor company; Lewisville, Texas Tel:

972.221.6656; Email: info@metlspan.com; Web: metlspan.com

2.2 PERFORMANCE REQUIREMENTS

A. General: Provide metal panel system meeting performance requirements as determined by

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application of specified tests by a qualified testing facility on manufacturer's standard assemblies.

B. Structural Performance: Provide metal panel assemblies capable of withstanding the effects of indicated loads and stresses within limits and under conditions indicated, as determined by

ASTM E 72 or ASTM E 1592 applied in accordance with ICC AC 04, Section 4, Panel Load Test Option or Section 5, Panel Analysis Option:

1. Wind Loads: Determine loads based on uniform pressure, importance factor, exposure category, and basic wind speed indicated on drawings.

a. Roof Panel Wind Uplift Testing: Certify capacity of metal panels by testing of proposed assembly per ASTM E 72 or ASTM E 1592.

2. Roof Panel Snow Loads: 25 lbf/sq. ft. (1197 Pa).

3. Deflection Limits: Withstand inward and outward wind-load design pressures in accordance with applicable building code with maximum deflection of 1/180 of the span with no evidence of failure.

C. Roof Panels FM Approvals Listing: Comply with FM Approvals 4471 as part of a panel roofing system, and that are listed in FM Approvals' "RoofNav" for

Class 1 construction.

1. Fire/Windstorm Classification: Class 1A-90.

2. Hail Resistance Rating: SH.

E. Fire Performance Characteristics: Provide metal panel systems with the following fire-test characteristics determined by indicated test standard as applied by UL or other testing and inspection agency acceptable to authorities having jurisdiction.

1. Surface-Burning Characteristics: Provide metal panel systems with the following characteristics when tested per ASTM E 84. The core shall have:

a. Flame spread index: 25 or less.

b. Smoke developed index: 450 or less.

2. Fire Performance of Insulated Roof: Class 1 roof and wall panel per

ANSI/FM 4880.

3. Fire Growth: The fire assembly shall meet the requirements of the standard for NFPA 286.

F. Roof Panel Air Infiltration, ASTM E 1680: Maximum 0.017 cfm/sq. ft. (0.08

L/s per sq. m) at static-air-pressure difference of 15 lbf/sq. ft. (718 Pa).

G. Roof Panel Water Penetration Static Pressure, ASTM E 1646: No uncontrolled water penetration at a static pressure of 15 lbf/sq. ft. (718Pa).

H. Hydrostatic Roof System Tests: No leakage after subjecting a multi-panel assembly configured in a two-span condition to a six-inch static water head after a seven-day period (referenced as FM 4471, Appendix G) or six-hour period per ASTM E 2140.

I. Test procedure for susceptibility to leakage of discontinuous roof systems per FM 4471 Appendix

G: water applied to a depth of 6” above the lowest section of roof profile.

No water infiltration

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observed during the seven-day test period.

J. Static water penetration per ASTM E2140: no water leakage after 6 hours at a water depth of 6”.

K. Thermal Movements: Allow for thermal movements from variations in both ambient and internal temperatures. Accommodate movement of support structure caused by thermal expansion and contraction. Allow for deflection and design for thermal stresses caused by temperature differences from one side of the panel to the other.

L. Thermal Performance: When tested in accordance with ASTM C 518, Measurement of Steady

State thermal Transmission, the panels shall provide a k factor of 0.112 btu-in/hr-sf-deg F at a

35° F (1.67° C) mean temperature.

2.3 INSULATED METAL ROOF PANELS

A. Standing Seam, Foamed-Insulation-Core Metal Roof Panels: Structural metal panels consisting of an exterior standing seam with an interior tongue and groove joint, coupled with a vapor seal in the standing seam, and provides superior resistance to air and moisture intrusion. Attached with concealed fasteners to the structure.

1. Basis of Design: Metl-Span, CFR Insulated Metal Panel.

2. G-90 Galvanized Coated Steel: ASTM A 653 or Aluminum-Zinc Alloy-Coated

Steel:

ASTM A 792/A 792M, structural quality, Grade 50, Coating Class AZ50 (Grade

340, Coating Class AZM150), prepainted by the coil-coating process per ASTM A

755/A 755M.

3. Aluminum-Zinc Alloy-Coated Steel Sheet: ASTM A 792/A 792M, structural quality, Grade 50, Coating Class AZ55 (Grade 340, Coating Class AZM165) unpainted

Galvalume

Plus coating.

4. Exterior Face Sheet: 22 gauge coated thickness, with stucco embossed] surface.

1) Finish: Fluoropolymer two-coat metallic color system

2)Color: As indicated on drawings

5. Interior Face Sheet: 22 gauge coated thickness, with stucco embossed surface Mesa profile.

1) Finish: Finish: Polyester two-coat system

2) Color: Off white

6. Endlaps: Provide panels with factory endlaps, notching, swedging and backer plates;

where panel lengths permit.

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7. Low Eave Treatment: Provide cutback for trim/gutter installation; where panel lengths permit.

8. Panel Width: 36 inches (914 mm.

9. Panel Thickness: 4 inch (102 mm).

10. Insulating Core: Polyisocyanurate with zero ozone depletion potential blowing agent

a. Closed Cell Content: 90% or more as determined by ASTM D 6226

b. Compressive Strength: As required to meet structural performance requirements and with a minimum of 20 psi as determined by ASTM D 1621

c. Shear Strength: As required to meet structural performance requirements and with a minimum of 20 psi as determined by ASTM C 273

d. Tensile Strength: As required to meet structural performance requirements and with a minimum of 16 psi ASTM D 1623

e. Minimum Density: 2.0 pcf (32 kg/m3) as determined by ASTM D 1622

2.4 METAL ROOF PANEL ACCESSORIES

A. General: Provide complete metal panel assemblies incorporating trim, copings, fasciae, gutters and downspouts, and miscellaneous flashings. Provide required fasteners, closure strips, and sealants as indicated in manufacturer's written instructions.

B. Flashing and Trim: Match material, thickness, and finish of metal panel face sheet.

C. Panel Fasteners: Self-tapping screws and other acceptable fasteners recommended by metal panel manufacturer. Provide corrosion-resistant fasteners with heads matching color of metal panels by means of factory-applied coating, with weathertight resilient washers.

D. Joint Sealers: Provide Tape Mastic Sealants and Concealed Joint Sealants per Section 07 92 00, “Joint Sealants”.

E. Roof Accessories: Approved by metal panel manufacturer. Refer to Section

07 72 00 "Roof

Accessories" for requirements for curbs, equipment supports, roof hatches, heat and smoke vents, ventilators, and preformed flashing sleeves.

F. Snow Guards: Compatible with standing seam roof and approved by metal panel manufacturer.

Refer to Section 07 72 53 "Snow Guards" for requirements for snow guards attached to metal roof panels.

G. Roof Curbs: Compatible with standing seam roof and approved by metal panel manufacture.

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Refer to Section 07 72 10 “Roof Curbs” for requirements for roof curbs attached to metal roof panels.

2.5 FABRICATION

A. General: Provide factory fabricated and finished metal panels, trim, and accessories meeting performance requirements, indicated profiles, and structural requirements.

B. Fabricate metal panel joints configured to accept sealant tape providing weathertight seal and preventing metal-to-metal contact and minimizing noise resulting from thermal movement.

C. Sheet Metal Flashing and Trim: Fabricate flashing and trim to comply with manufacturer's written instructions, approved shop drawings, and project drawings.