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Drexel Metals, LLC Metal Roofing
 
         
SECTION 07610
 
         
METAL ROOFING
 
         
 
         
          ** NOTE TO SPECIFIER ** Drexel Metals, LLC; engineered metal roofing.
.
This section is based on the products of Drexel Metals, LLC, which is located at:
204 Railroad Dr.
Ivyland, PA 18974
Toll Free Tel: 888-321-9630
Email: request info
Web: www.drexmet.com
[ Click Here ] for additional information.

Drexel Metals LLC is dedicated to growing opportunity for regional manufacturers of metal roofing through its DMARM (Drexel Metals Association of Regional Manufacturers).
Drexel's multiple roof systems along with our integrated supply chain makes Drexel extremely easy to do business with.
Combine all of the above and you have empowered regional manufacturers with the ability to supply metal roofing that is superior to traditional fixed in place manufactures ON DEMAND ... all through a lower cost supply chain than the traditional fixed in place manufacturers.
Drexel's goal: Peace of mind. Peace of mind for the building owner, architect and our customers that our metal roofing systems and products will meet your requirements each and every time.
Customers have the right to be treated honorably and with respect. Drexel is fully committed to meeting that obligation. The result is a strong bond of trust with our customers.
In January 2009, Drexel Metals LLC was formed as the successor company of Drexel Metals Corporation that was founded in 1985. Drexel Metals Corporation had become a leader in the distribution of painted metal for the roofing, architectural sheet metal, military and crop storage industries.
Drexel Metals LLC's management team brings together a diverse team of experts who have hands on experience on the roof as well as Fortune 500 experience that totals over 200 years of combined operating experience.
 
          PART 1GENERAL
 
          1.1SECTION INCLUDES
          ** NOTE TO SPECIFIER ** Delete items below not required for project.
 
          A.Factory-formed field-assembled exposed fastener metal roofing system.
 
          B.Onsite formed field-assembled exposed fastener metal roofing system.
 
          C.Factory-formed field-assembled concealed fastener metal roofing system.
 
          D.Onsite formed field-assembled concealed fastener metal roofing system.
 
          E.Metal soffit panels.
 
          1.2RELATED SECTIONS
          ** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
          A.Section 05300 - Metal Deck.
 
          B.Section 06110 - Wood Framing.
 
          C.Section 07220 - Roof and Deck Insulation.
 
          D.Section 07620 - Sheet Metal Flashing and Trim.
 
          1.3REFERENCES
          ** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
          A.American Architectural Manufacturers Association (AAMA):
          1.AAMA 2604 - Voluntary Specification, Performance Requirements and Test Procedures for High Performance Organic Coatings on Aluminum Extrusions and Panels.
          2.AAMA 2605 - Voluntary Specification, Performance Requirements and Test Procedures for Superior Performing Organic Coatings on Aluminum Extrusions and Panels
 
          B.American Society of Testing and Materials (ASTM):
          1.ASTM A 653 - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process.
          2.ASTM A 755 - Standard 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 B 117 - Standard Practice for Operating Salt Spray (Fog) Apparatus.
          5.ASTM B 209 - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate.
          6.ASTM B 370 - Standard Specification for Copper Sheet and Strip for Building Construction.
          7.ASTM C 920 - Standard Specification for Elastomeric Joint Sealants.
          8.ASTM C 1311 - Standard Specification for Solvent Release Sealants.
          9.ASTM D 226 - Standard Specification for Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing.
          10.ASTM D 822 - Standard Practice for Filtered Open-Flame Carbon-Arc Exposures of Paint and Related Coatings.
          11.ASTM D 1970 - Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection.
          12.ASTM D 2523 - Standard Practice for Testing Load-Strain Properties of Roofing Membranes.
          13.ASTM D 2247 - Standard Practice for Testing Water Resistance of Coatings in 100 Percent Relative Humidity.
          14.ASTM E 1680 - Standard Test Method for Rate of Air Leakage Through Exterior Metal Roof Panel Systems.
          15.ASTM E 1886 - Standard Test Method for Performance of Exterior Windows, Curtain Walls, Doors, and Impact Protective Systems Impacted by Missile(s) and Exposed to Cyclic Pressure Differentials.
 
          C.Miami-Dade County Protocol Testing Application Standard (TAS):
          1.Miami-Dade County Protocol TAS 100 - Test Procedure for Wind and Wind Driven Rain Resistance of Discontinuous Roof Systems.
          2.Miami-Dade County Protocol TAS 125 - Uplift Resistance Test (UL 580 Class 90 or higher).
 
          D.Underwriters Laboratories (UL):
          1.UL 580 - Tests for Uplift Resistance of Roof Assemblies.
          2.UL 2218 - Impact Resistance of Prepared Roof Covering Materials.
 
          1.4SUBMITTALS
 
          A.Submit under provisions of Section 01300.
 
          B.Product Data: Manufacturer's data sheets on each product to be used, including:
          1.Preparation instructions and recommendations.
          2.Storage and handling requirements and recommendations.
          3.Installation methods.
 
          C.Shop Drawings:
          1.Details shall include edge conditions, panel profiles, trim and flashings, closures, and other accessories.
 
          D.Warranty Project Information Sheet and Warranty Applications shall be completed and submitted by installer prior to delivery of the warranty.
          ** NOTE TO SPECIFIER ** Delete selection samples if colors have already been selected.
 
          E.Selection Samples: For each finish product specified, two complete sets of color chips representing manufacturer's full range of available colors and patterns.
 
          F.Verification Samples: For each finish product specified, two samples, minimum size 6 inches (150 mm) square, representing actual product, color, and patterns.
 
          1.5QUALITY ASSURANCE
 
          A.Installer Qualifications: Installer's responsibilities shall include fabricating and installing metal roof panel assemblies and providing professional engineering services necessary to assume engineering responsibility.
          ** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
 
          B.Mock-Up: Provide a mock-up for evaluation of substrate preparation techniques and application workmanship.
          1.Finish areas designated by Architect.
          2.Do not proceed with remaining work until workmanship and aesthetics are approved by Architect.
          3.Rework mock-up area as required to produce acceptable work.
 
          C.Pre-Installation Conference: Conduct conference at Project site or at specified location with the Architect and Contractor.
 
          1.6DELIVERY, STORAGE, AND HANDLING
 
          A.Store products in manufacturer's unopened packaging until ready for installation.
 
          B.Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.
 
          1.7PROJECT CONDITIONS
 
          A.Anticipate environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.
 
          1.8WARRANTY
          ** NOTE TO SPECIFIER ** Finish warranty for all colors except Brilliance Red. A number of Drexmet Standard Colors meet the minimum standard Energy Efficient requirements as outlined in the Energy Star Program. Refer to manufacturer's literature.
 
          A.Paint Finish Warranty:
          1.35 Year Non Pro-rated Kynar Paint Warranty with a 20 year Galvalume Substrate Warranty.
          2.35 Year Non Pro-rated Kynar Paint and 25 year Aluminum Substrate Warranty.
          3.25 Year Non Pro-rated Drexlume (Acrylic Coated Galvalume) Warranty.
          4.20 Year Non Pro-rated International Kynar Paint Warranty.
          5.Manufacturer's standard form in which manufacturer agrees to repair finish or replace material that show evidence of deterioration of factory-applied finishes within specified warranty period from date of Substantial Completion.
          6.Failures include, but are not limited to, the following:
          a.Structural failures, including rupturing, cracking, or puncturing.
          b.Deterioration of metals, metal finishes, and other materials beyond normal weathering and excluding Salt Water locations within 2,800 feet (853 m).
          ** NOTE TO SPECIFIER ** Not available for DMC 5-V Face Fastening. Delete if not required.
 
          B.Weathertight Warranty:
          1.5 year Weathertight Warranty.
          2.10 year Weathertight Warranty including no dollar limit warranties.
          3.15 year Weathertight Warranty including no dollar limit warranties.
          4.20 year Weathertight Warranty including no dollar limit warranties.
          ** NOTE TO SPECIFIER ** Contractor shall qualify as a certified installer of Drexmet products. Delete if not required.
 
          C.Corrosion Warranty: When system installed with Drexel Drexlume (Acrylic Coated Galvalume) sheet DMC LLC shall provide a 25 year 6 month Warranty (Salt Water locations within 2,800 feet (853 m) excluded) against failures.
          1.Failures include, but are not limited to, the following:
          a.Structural failures, including rupturing, cracking, or puncturing.
          b.Deterioration of metals, metal finishes, and other materials beyond normal weathering.
 
          PART 2PRODUCTS
 
          2.1MANUFACTURERS
 
          A.Acceptable Metal Roofing Manufacturer: Drexel Metals, LLC; 204 Railroad Dr., Ivyland, PA 18974. ASD. Tool Free Tel: (888) 321-9630. Fax: (877) 321-9638. Web: www.drexmet.com" www.drexmet.com also known as the Drexel Metals Association Regional Manufacturers.
 
          B.Acceptable Metal Soffit Panel Manufacturer:
          1.Product: DMC-12S as manufactured by Drexel Metals LLC.
          2.Comparable products by the following manufacturers:
          a.Product: Comparable product as manufactured by Alcoa Aluminum.
          b.Product: SP-12 Aluminum as manufactured by Centria.
          ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
 
          C.Substitutions: Not permitted.
 
          D.Requests for substitutions will be considered in accordance with provisions of Section 01600.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.2EXPOSED FASTENER METAL ROOFING SYSTEM
          ** NOTE TO SPECIFIER ** Factory-formed or field formed, designed to be field assembled by lapping side edges of adjacent panels and attaching through panel to solid substrate, 15/32 (11.9 mm) minimum substrate thickness using #10 by 1-1/2 inches (38 mm) hex-head fasteners. See Drexel Metals Details for installations specifics. Typical application over plywood. Delete if not required.
 
          A.Face Fastening Metal Roof Panels:
          1.Product: DMC 5-V Face Fastening metal roofing system as manufactured Drexel Metals LLC.
          2.UL 580 90 Class approved.
          3.Minimum Slope: 3/12.
          4.Profile: Multiple "V" ribbed stiffened panel. Metallic-coated steel sheet, 26 gauge, 0.018min inch (0.40 mm) nominal thick.
          ** NOTE TO SPECIFIER ** Delete material not required.
          5.Material: Metallic-Coated Steel Sheet Prepainted with Coil Coating: Steel sheet metallic coated by the hot-dip process and prepainted by the coil-coating process to comply with ASTM A755/A755M-03.
          6.Material: Aluminum-Zinc Alloy-Coated Steel Sheet: Galvalume ASTM A792/A792M-05, AZ50 coating designation, SS, Grade D/ 50,000 psi (345,000 kPa) minimum yield, Tension Leveled.
          7.Material: Zinc-Coated (Galvanized) Steel Sheet: ASTM A653/A653M-05, G90 coating designation; SS, Grade D/ 50,000 psi (345,000 kPa) minimum yield, Tension Leveled.
          ** NOTE TO SPECIFIER ** Delete exposed finish not required.
          8.Exposed Finish: Drexmet High Performance Metal Roofing Finishes (Trinar).
          9.Exposed Finish: Drexlume.
          10.Concealed Finish: White or light-colored acrylic or polyester backer finish.
          11.Panel Coverage: 24 inches (610 mm).
          12.Panel Height: 1/2 inch (13 mm).
          13.Uplift Rating: UL 580, TAS 125, Dade County NOA, FBC #.
          14.Wind-Driven Rain: TAS 100.
          15.Impact Resistance: UL 2218.
          16.Fire Resistance: UL CLASS A Fire Rating.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.3CONCEALED FASTENER METAL ROOFING SYSTEM
          ** NOTE TO SPECIFIER ** Concealed-Fastener, Standing Seam Metal Roof Panels: Factory-formed or onsite, designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching clips with appropriate fasteners between vertical legs of Standing Seam Roof System. See DMC Engineering for exact specifications. Delete if not required.
 
          A.Standing Seam Metal Roof Panels:
          1.Product: DMC 100 SS Standing Seam Copper Roofing Systems as manufactured by Drexel Metals LLC.
          2.Profile: Mechanical Standing Seam 180 degrees.
          3.Material: 0.0216 inch (0.54 mm) thick copper (16 oz). ASTM B370 - 16oz - half hard.
          4.Finish:
          5.Panel Coverage: 17 inches (432 mm).
          6.Panel Height: 1.00 inch (25 mm).
          7.Uplift Rating: UL 580 - 90 CLASS APPROVED.
          8.Impact Resistance: UL 2218.
          9.Fire Resistance: UL Class A Fire Rating.
          10.Clip: One piece stainless steel assembly, 1-1/2 inches wide by1-1/8 inches high (38 mm by 29 mm). Minimum thickness .015 inch (0.38 mm) (No. 28 MSG).
          11.Closures: Provide closures at eaves and ridges, fabricated of same metal as metal roof panels.
          ** NOTE TO SPECIFIER ** Concealed-Fastener, Standing Seam Metal Roof Panels: Factory-formed or Onsite, designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching with appropriate fasteners at the nail strip, one at each end and 10-1/2 inches (267 mm) o.c. of Standing Seam Roof System. Typical installation over plywood. See Drexel Engineering for exact specifications. Delete if not required.
 
          B.Standing Seam Metal Roof Panels:
          1.Product: DMC 100 NS Standing Seam metal roofing system as manufactured Drexel Metals LLC.
          2.Minimum Slope: 3/12.
          3.Profile: Profile stiffened panel. Formed male/female snap lock seam with nailing fin. Metallic-coated steel sheet, 24 gauge, 0.023min inch (0.60 mm) nominal thick.
          ** NOTE TO SPECIFIER ** Delete material not required.
          4.Material: Metallic-Coated Steel Sheet Prepainted with Coil Coating: Steel sheet metallic coated by the hot-dip process and prepainted by the coil-coating process to comply with ASTM A755/A755M-03.
          5.Material: Aluminum-Zinc Alloy-Coated Steel Sheet: Galvalume ASTM A792/A792M-05, AZ50 coating designation, SS, Grade D/ 50,000 psi (345,000 kPa) minimum yield, Tension Leveled.
          6.Material: Zinc-Coated (Galvanized) Steel Sheet: ASTM A653/A653M-05, G90 coating designation; SS, Grade D/ 50,000 psi (345,000 kPa) minimum yield, Tension Leveled.
          ** NOTE TO SPECIFIER ** Delete exposed finish not required.
          7.Exposed Finish: Drexmet High Performance Metal Roofing Finishes (Trinar).
          8.Exposed Finish: Drexlume.
          9.Concealed Finish: White or light-colored acrylic or polyester backer finish.
          10.Panel Coverage: 16 inches (406 mm).
          11.Panel Height: 1 inch (25 mm).
          12.Uplift Rating: UL 580, FBC #.
          13.Impact Resistance: UL 2218.
          14.Fire Resistance: UL Class A Fire Rating.
          15.Closures: Provide closures at eaves and ridges, fabricated of same metal as metal roof panels.
          ** NOTE TO SPECIFIER ** Concealed-Fastener, Standing Seam Metal Roof Panels: Factory-formed or Onsite, designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching clips with appropriate fasteners between vertical legs of Standing Seam Roof System. See DMC Engineering for exact specifications. Typical installation over plywood. Delete if not required.
 
          C.Standing Seam Metal Roof Panels:
          1.Product: DMC 150 SS Standing Seam metal roofing system as manufactured Drexel Metals LLC.
          2.Minimum Slope: 2/12.
          ** NOTE TO SPECIFIER ** Delete seam profile not required.
          3.Profile: 90 degree mechanical seam. Metallic-coated steel sheet, 24 gauge, 0.023min inch (0.60 mm) nominal thick.
          4.Profile: 180 degree mechanical seam. Metallic-coated steel sheet, 24 gauge, 0.023min inch (0.60 mm) nominal thick.
          ** NOTE TO SPECIFIER ** Delete material not required.
          5.Material: Metallic-Coated Steel Sheet Prepainted with Coil Coating: Steel sheet metallic coated by the hot-dip process and prepainted by the coil-coating process to comply with ASTM A755/A755M-03.
          6.Material: Aluminum-Zinc Alloy-Coated Steel Sheet: Galvalume ASTM A792/A792M-05, AZ50 coating designation, SS, Grade D/ 50,000 psi (345,000 kPa) minimum yield, Tension Leveled.
          7.Material: Zinc-Coated (Galvanized) Steel Sheet: ASTM A653/A653M-05, G90 coating designation; SS, Grade D/ 50,000 psi (345,000 kPa) minimum yield, Tension Leveled.
          ** NOTE TO SPECIFIER ** Delete exposed finish not required.
          8.Exposed Finish: Drexmet High Performance Metal Roofing Finishes (Trinar).
          9.Exposed Finish: Drexlume.
          10.Concealed Finish: White or light-colored acrylic or polyester backer finish.
          11.Panel Coverage: 16 inches (406 mm).
          12.Panel Height: 1-1/2 inch (38 mm).
          ** NOTE TO SPECIFIER ** 180 degree mechanical seam only. Delete if not required.
          13.Uplift Rating: UL 580, TAS 125, FBC #,
          ** NOTE TO SPECIFIER ** 90 degree mechanical seam only. Delete if not required.
          14.Uplift Rating: UL 580, TAS 125, FBC #.
          15.Wind Driven Rain: TAS 100.
          ** NOTE TO SPECIFIER ** 180 degree mechanical seam only. Delete if not required.
          16.Impact Resistance: UL 2218.
          17.Fire Resistance: UL Class A Fire Rating.
          ** NOTE TO SPECIFIER ** See the Thermal Movement Table in the Drexel Metals Details to determine if a fixed clip or a clip with expansion and contraction capabilities is required for proper installation of roof system, shall be Corrosion resistant, 24 gauge minimum.
          18.Clip: Minimum Drexel Metals LLC 150 SS Clip 1.625 inches (41 mm) 24 gauge, 0.024 inch (0.60 mm) metallic-coated-steel sheet. Provide fixed and expansion clip types as required or indicated.
          ** NOTE TO SPECIFIER ** 180 degree mechanical seam only. Delete if not required.
          a.Fixed, 26 gauge (0.455 mm) Stainless Steel clip for field installation. Two-piece butterfly clip with 22 ga (0.030 mm) continuous stainless steel base and 24 ga (0.024 mm) stainless steel butterfly for use in corner applications.
          19.Closures: Provide closures at eaves and ridges, fabricated of same metal as metal roof panels.
          ** NOTE TO SPECIFIER ** Concealed-Fastener, Standing Seam Metal Roof Panels: Factory-formed or Onsite, designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching clips with appropriate fasteners between vertical legs of Standing Seam Roof System. See Drexel Engineering for exact specifications. Delete if not required.
 
          D.Standing Seam Metal Roof Panels:
          1.Product: DMC 150 SS Standing Seam Aluminum roofing system as manufactured Drexel Metals LLC.
          2.Profile: Flat panel 180 degree mechanical seam. Aluminum coil-coated sheet.
          3.Material: Aluminum coil-coated sheet, ASTM B209, 3003 or 3105 alloy with a temper of H14 or H24, .032 inch (0.81 mm) aluminum as required to suit forming operations and structural performances required.
          ** NOTE TO SPECIFIER ** Delete surface finish not required.
          4.Surface: Smooth, flat finish.
          5.Surface: Embossed finish.
          6.Exposed Finish: Drexmet High Performance Metal Roofing Finishes (Trinar).
          7.Concealed Finish: White or light-colored acrylic or polyester backer finish.
          8.Panel Coverage: 16 inches (406 mm).
          9.Panel Height: 1-1/2 inch (38 mm).
          10.Uplift Rating: UL 580, TAS 125, FBC #, Dade County NOA.
          11.Wind Driven Rain: TAS 100.
          12.Air Infiltration: ASTM E 1680.
          13.Large Missile Impact: ASTM E 1886.
          14.Impact Resistance: UL 2218.
          15.Fire Resistance: UL Class A Fire Rating.
          ** NOTE TO SPECIFIER ** Refer to the Thermal Movement Table in the Drexel Metals Details to determine if a fixed clip or a clip with expansion and contraction capabilities is required for proper installation of roof system.
          16.Fixed, 26 gauge (0.455 mm) Stainless Steel clip for field installation. Two-piece butterfly clip with 22 ga (0.030 mm) continuous stainless steel base and 24 ga (0.024 mm) stainless steel butterfly for use in corner applications. Provide fixed and expansion clip types as required or indicated.
          17.Closures: Provide closures at eaves and ridges, fabricated of same metal as metal roof panels.
          ** NOTE TO SPECIFIER ** Concealed-Fastener, Snap lock Metal Roof Panels: Factory-formed or Onsite, designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching clips with appropriate fasteners between vertical legs of Standing Seam Roof System. Typical installation over plywood. Delete if not required.
 
          E.Snap Lock Metal Roof Panels:
          1.Product: DMC 150 SL Snap-Lock metal roofing system as manufactured Drexel Metals LLC.
          2.UL 580 - 90 Class approved.
          3.Minimum Slope: 3/12.
          4.Profile: Flat panel, snap lock joint. Metallic-coated steel sheet, 24 gauge, 0.023min inch (0.60 mm) nominal thick.
          ** NOTE TO SPECIFIER ** Delete material not required.
          5.Material: Metallic-Coated Steel Sheet Prepainted with Coil Coating: Steel sheet metallic coated by the hot-dip process and prepainted by the coil-coating process to comply with ASTM A755/A755M-03.
          6.Material: Aluminum-Zinc Alloy-Coated Steel Sheet: Galvalume ASTM A792/A792M-05, AZ50 coating designation, SS, Grade D/ 50,000 psi (345,000 kPa) minimum yield, Tension Leveled.
          7.Material: Zinc-Coated (Galvanized) Steel Sheet: ASTM A653/A653M-05, G90 coating designation; SS, Grade D/ 50,000 psi (345,000 kPa) minimum yield, Tension Leveled.
          ** NOTE TO SPECIFIER ** Delete exposed finish not required.
          8.Exposed Finish: Drexmet High Performance Metal Roofing Finishes (Trinar).
          9.Exposed Finish: Drexlume.
          10.Concealed Finish: White or light-colored acrylic or polyester backer finish.
          11.Panel Coverage: 16 inches (508 mm).
          12.Panel Height: 1-1/2 inch (38 mm).
          13.Uplift Rating: UL 580, TAS 125, FBC #.
          14.Impact Resistance: UL 2218.
          15.Fire Resistance: UL Class A Fire Rating.
          16.Clip: Drexel Metals LLC 150 SL Clip. Fixed, corrosion resistant, Minimum 24 gauge (0.024 inch) (0.61 mm) thick, galvanized clips designed to withstand negative-load requirements.
          17.Closures: Provide closures at eaves and ridges, fabricated of same metal as metal roof panels.
          ** NOTE TO SPECIFIER ** Concealed-Fastener, Snap lock Metal Roof Panels: Factory-formed or Onsite, designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching clips with appropriate fasteners between vertical legs of Standing Seam Roof System. Delete if not required.
 
          F.Snap Lock Metal Roof Panels:
          1.Product: DMC 175 S Snap-Lock metal roofing system as manufactured Drexel Metals LLC.
          2.UL 580 - 90 Class approved.
          3.Minimum Slope: 3/12.
          ** NOTE TO SPECIFIER ** Delete profile not required.
          4.Profile: Flat panel, snap lock joint. Metallic-coated steel sheet.
          5.Profile: Striated flat panel (two equally spaced stiffening ribs per panel), snap lock joint. Metallic-coated steel sheet.
          ** NOTE TO SPECIFIER ** Delete material not required.
          6.Material: Metallic-Coated Steel Sheet Prepainted with Coil Coating: Steel sheet metallic coated by the hot-dip process and prepainted by the coil-coating process to comply with ASTM A755/A755M-03. 24 gauge, 0.024 inch (0.60 mm) nominal thick.
          7.Material: Aluminum-Zinc Alloy-Coated Steel Sheet: Galvalume ASTM A792/A792M-05, AZ50 coating designation, SS, Grade D/ 50,000 psi (345,000 kPa) minimum yield, Tension Leveled.
          ** NOTE TO SPECIFIER ** Delete gauge not required.
          a.Gauge: 22 gauge, 0.030 inch (0.76 mm) nominal thick.
          b.Gauge: 24 gauge, 0.023min inch (0.60 mm) nominal thick.
          8.Material: Zinc-Coated (Galvanized) Steel Sheet: ASTM A653/A653M-05, G90 coating designation; SS, Grade D/ 50,000 psi (345,000 kPa) minimum yield, Tension Leveled. 24 gauge, 0.023min inch (0.60 mm) nominal thick.
          ** NOTE TO SPECIFIER ** Delete exposed finish not required.
          9.Exposed Finish: Drexmet High Performance Metal Roofing Finishes (Trinar).
          10.Exposed Finish: Drexlume.
          11.Concealed Finish: White or light-colored acrylic or polyester backer finish.
          12.Panel Coverage: 18 inches (457 mm).
          13.Panel Height: 1-3/4 inch (44 mm).
          14.Uplift Rating: UL 580, TAS 125, Dade County NOA, FBC #.
          15.Wind-Driven Rain: TAS 100.
          16.Large Missile Impact: ASTM E 1886.
          17.Air Infiltration: ASTM E 1680.
          18.Impact Resistance: UL 2218.
          19.Fire Resistance: UL Class A Fire Rating.
          20.Clip: Metallic-coated-steel sheet. Fixed, corrosion resistant, 18 gauge (1.214 mm) UL 580 - 90 Class approved clips designed to withstand negative-load requirements. Drexel Metals LLC 18-175UL Clip.
          21.Closures: Provide closures at eaves and ridges, fabricated of same metal as metal roof panels.
          ** NOTE TO SPECIFIER ** Concealed-Fastener, Snap lock Metal Roof Panels: Factory-formed or Onsite, designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching clips with appropriate fasteners between vertical legs of Standing Seam Roof System. Delete if not required.
 
          G.Snap Lock Metal Roof Panels:
          1.Product: DMC 175 S Snap-Lock aluminum roofing system as manufactured Drexel Metals LLC.
          2.UL 580 - 90 Class approved.
          3.Minimum Slope: 3/12.
          ** NOTE TO SPECIFIER ** Delete profile not required.
          4.Profile: Profile: Flat panel, snap lock joint.
          5.Profile: Striated flat panel (two equally spaced stiffening ribs per panel), snap lock joint.
          6.Material: Aluminum coil-coated sheet, ASTM B209, 3003 or 3105 alloy with a temper of H14 or H24, .032 inch (0.81 mm) aluminum as required to suit forming operations and structural performances required.
          ** NOTE TO SPECIFIER ** Delete surface finish not required.
          7.Surface: Smooth, flat finish.
          8.Surface: Embossed finish.
          9.Exposed Finish: Drexmet High Performance Metal Roofing Finishes (Trinar).
          10.Concealed Finish: White or light-colored acrylic or polyester backer finish.
          11.Panel Coverage: 14 inches (356 mm).
          12.Panel Height: 1-3/4 inch (44 mm).
          13.Uplift Rating: UL 580, FBC # 12174.4
          14.Wind-Driven Rain: TAS 100.
          15.Impact Resistance: UL 2218.
          16.Fire Resistance: UL Class A Fire Rating.
          17.Clip: Stainless steel sheet. Fixed, corrosion resistant, 18 gauge (1.214 mm) UL 580 - 90 Class approved clips designed to withstand negative-load requirements. Drexel Metals LLC 18-175UL Clip.
          18.Closures: Provide closures at eaves and ridges, fabricated of same metal as metal roof panels.
          ** NOTE TO SPECIFIER ** Concealed-Fastener, Snap lock Metal Roof Panels: Factory-formed or Onsite, designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching clips with appropriate fasteners between vertical legs of Standing Seam Roof System. Plywood and "B" deck applications. Delete if not required.
 
          H.Snap Lock Metal Roof Panels:
          1.Product: DMC 175 S Snap-Lock aluminum roofing system as manufactured Drexel Metals LLC.
          2.UL 580 - 90 Class approved.
          3.Minimum Slope: 3/12.
          ** NOTE TO SPECIFIER ** Delete profile not required.
          4.Profile: Profile: Flat panel, snap lock joint.
          5.Profile: Striated flat panel (two equally spaced stiffening ribs per panel), snap lock joint.
          6.Material: Aluminum coil-coated sheet, ASTM B209, 3003 or 3105 alloy with a temper of H14 or H24, .040 inch (1.0 mm) aluminum as required to suit forming operations and structural performances required.
          ** NOTE TO SPECIFIER ** Delete surface finish not required.
          7.Surface: Smooth, flat finish.
          8.Surface: Embossed finish.
          9.Exposed Finish: Drexmet High Performance Metal Roofing Finishes (Trinar).
          10.Concealed Finish: White or light-colored acrylic or polyester backer finish.
          11.Panel Coverage: 17.5 inches (445 mm).
          12.Panel Height: 1-3/4 inch (44 mm).
          13.Uplift Rating: UL 580, TAS 125, Dade County NOA No., FBC #.
          14.Wind-Driven Rain: TAS 100.
          15.Large Missile Impact: ASTM E 1886.
          ** NOTE TO SPECIFIER ** Not available over steel "B" deck. Delete if not required.
          16.Air Infiltration: ASTM E 1680.
          17.Impact Resistance: UL 2218.
          18.Fire Resistance: UL Class A Fire Rating.
          19.Clip: Stainless steel sheet. Fixed, corrosion resistant, 18 gauge (1.214 mm) UL 580 - 90 Class approved clips designed to withstand negative-load requirements. Drexel Metals LLC 18-175UL Clip.
          20.Closures: Provide closures at eaves and ridges, fabricated of same metal as metal roof panels.
          ** NOTE TO SPECIFIER ** Concealed-Fastener, Standing Seam Metal Roof Panels: Factory-formed or Onsite, designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching clips with appropriate fasteners between vertical legs of Standing Seam Roof System. See DMC Engineering for exact specifications. Delete if not required.
 
          I.Standing Seam Metal Roof Panels:
          1.Product: DMC 200 S Standing Seam metal roofing system as manufactured Drexel Metals LLC.
          2.Minimum Slope: 1/2:12 without end laps.
          3.Profile: Mechanical seam 180 degrees. Metallic-coated steel sheet, 24 gauge, 0.023min inch (0.60 mm) nominal thick.
          ** NOTE TO SPECIFIER ** Delete material not required.
          4.Material: Metallic-Coated Steel Sheet Prepainted with Coil Coating: Steel sheet metallic coated by the hot-dip process and prepainted by the coil-coating process to comply with ASTM A755/A755M-03. 24 gauge, 0.023min inch (0.60 mm) nominal thick.
          5.Material: Aluminum-Zinc Alloy-Coated Steel Sheet: Galvalume ASTM A792/A792M-05, AZ50 coating designation, SS, Grade D/ 50,000 psi (345,000 kPa) minimum yield, Tension Leveled.
          ** NOTE TO SPECIFIER ** Delete gauge not required.
          a.Gauge: 22 gauge, 0.030 inch (0.76 mm) nominal thick.
          b.Gauge: 24 gauge, 0.023min inch (0.60 mm) nominal thick.
          6.Material: Zinc-Coated (Galvanized) Steel Sheet: ASTM A653/A653M-05, G90 coating designation; SS, Grade D/ 50,000 psi (345,000 kPa) minimum yield, Tension Leveled. 24 gauge, 0.023min inch (0.60 mm) nominal thick.
          ** NOTE TO SPECIFIER ** Delete exposed finish not required.
          7.Exposed Finish: Drexmet High Performance Metal Roofing Finishes (Trinar).
          8.Exposed Finish: Drexlume.
          9.Concealed Finish: White or light-colored acrylic or polyester backer finish.
          10.Panel Coverage: 16 inches (406 mm).
          11.Panel Height: 2 inch (51 mm) rib.
          ** NOTE TO SPECIFIER ** TAS 125 and Dade County NOA acceptance for B deck only. Delete if not required.
          12.Uplift Rating: UL 580, FBC #, TAS 125, Dade County NOA.
          ** NOTE TO SPECIFIER ** Plywood deck only. Delete if not required.
          13.Uplift Rating: UL 580, FBC #.
          ** NOTE TO SPECIFIER ** B deck only. Delete if not required.
          14.Wind Driven Rain: TAS 100.
          ** NOTE TO SPECIFIER ** B deck only. Delete if not required.
          15.Air Infiltration: ASTM E 1680.
          ** NOTE TO SPECIFIER ** B deck only. Delete if not required.
          16.Large Missile Impact: ASTM E 1886
          17.Impact Resistance: UL 2218.
          18.Fire Resistance: UL Class A Fire Rating.
          ** NOTE TO SPECIFIER ** See the Thermal Movement Table in the Drexel Metals Details to determine if a fixed clip or a clip with expansion and contraction capabilities is required for proper installation of roof system, shall be Corrosion resistant, 24 gauge minimum.
          19.Clip: Minimum Drexel Metals LLC 200 SS Clip 24 gauge, 0.023min inch (0.60 mm) metallic-coated-steel sheet. Provide fixed and expansion clip types as required or indicated.
          ** NOTE TO SPECIFIER ** 180 degree mechanical seam only. Delete if not required.
          a.Provide fixed and expansion clip types as required or indicated. Fixed, 26 gauge (0.455 mm) Stainless Steel clip for field installation. Two-piece butterfly clip with 22 ga (0.030 mm) continuous stainless steel base and 24 ga (0.024 mm) stainless steel butterfly for use in corner applications.
          20.Closures: Provide closures at eaves and ridges, fabricated of same metal as metal roof panels.
          ** NOTE TO SPECIFIER ** Concealed-Fastener, Standing Seam Metal Roof Panels: Factory-formed or Onsite, designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching clips with appropriate fasteners between vertical legs of Standing Seam Roof System. See DMC Engineering for exact specifications. Delete if not required.
 
          J.Standing Seam Metal Roof Panels:
          1.Product: DMC 200 S aluminum roofing system as manufactured Drexel Metals LLC.
          2.Profile: Flat panel, mechanical 180 degree seam.
          3.Material: Aluminum coil-coated sheet, ASTM B209, 3003 or 3105 alloy with a temper of H14 or H24, .040 inch (1.0 mm) aluminum as required to suit forming operations and structural performances required.
          ** NOTE TO SPECIFIER ** Delete surface finish not required.
          4.Surface: Smooth, flat finish.
          5.Surface: Embossed finish.
          6.Exposed Finish: Drexmet High Performance Metal Roofing Finishes (Trinar).
          7.Concealed Finish: White or light-colored acrylic or polyester backer finish.
          8.Panel Coverage: 16 inches (406 mm).
          9.Panel Height: 2 inch (51 mm).
          10.Uplift Rating: UL 580, FBC #.
          11.Impact Resistance: UL 2218.
          12.Fire Resistance: UL Class A Fire Rating.
          13.Clip: hot dipped galvanized steel sheet. Fixed, corrosion resistant, 18 gauge (1.214 mm) UL 580 - 90 Class approved clips designed to withstand negative-load requirements. Drexel Metals LLC mitchell Clip.
          a.Two-piece butterfly clip with 22 ga (0.030 mm) continuous stainless steel base and 24 ga (0.024 mm) stainless steel butterfly for use in corner applications. Provide fixed and expansion clip types as required or indicated.
          14.Closures: Provide closures at eaves and ridges, fabricated of same metal as metal roof panels.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          2.4METAL SOFFIT PANELS
 
          A.General: Provide Formed metal soffit panels designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching through panel to supports using concealed fasteners in side laps. Include accessories required for weathertight installation.
 
          B.Metal Soffit Panels:
          1.Finish: As indicated on Drawings.
          2.Profile: Flush.
          ** NOTE TO SPECIFIER ** Delete material not required.
          3.Material: Same material, finishes, and colors as metal roof panels.
          4.Material: Metallic-coated steel sheet, 26 gauge .018 inch (0.46 mm) nominal.
          5.Material: Perforated Aluminum .032 inch (0.81 mm).
          ** NOTE TO SPECIFIER ** Delete finish not required.
          6.Exterior Smooth Finish: Drexmet High Performance Metal Roofing Finishes (Trinar).
          7.Exterior Smooth Finish: Drexmet High Performance Metal Roofing Finishes (SMP).
          a.Color: As selected by Architect or Building owner from manufacturer's Drexel Metals LLC Color Chart
          8.Panel Coverage: 12 inches (305 mm) coverage.
          9.Panel Height: 1 inch (25 mm) depth.
          10.Panel Length: 5 feet to 20 feet (1.5 to 6.0 m).
          ** NOTE TO SPECIFIER ** Delete underlayment material not required.
 
          2.5UNDERLAYMENT MATERIALS
          ** NOTE TO SPECIFIER ** This product is required for the Drexel Metals Weathertight Warranty. Delete if not required.
 
          A.Synthetic Underlayment: Underlayment sheet complying with PA104, ASTM E331-00 and ASTM D2523-00.
          ** NOTE TO SPECIFIER ** This product cannot be used for the Drexel Metals Weathertight Warranty. Delete if not required.
 
          B.Felts: ASTM D226-05, Type No. 30, asphalt-saturated organic felts.
 
          C.Self-Adhering, Polyethylene-Faced Sheet: ASTM D1970-01, 40 mils thick minimum, consisting of slip-resisting polyethylene-film reinforcing and top surface laminated to SBS-modified asphalt adhesive, with release-paper backing; cold applied.
          ** NOTE TO SPECIFIER ** Used to resist leaks from roof areas where ice dams form and other roof areas vulnerable to leakage. Delete if not required.
 
          D.Self-Adhering, High-Temperature Sheet: 30 to 40 mils (0.76 mm to 1.0 mm) thick minimum, consisting of slip-resisting polyethylene-film top surface laminated to layer of butyl or SBS-modified asphalt adhesive, with release-paper backing; cold applied. Provide primer where recommended by underlayment manufacturer.
          1.Thermal Stability: Stable after testing per ASTM D 1970-01.
          2.Low Temperature Flexibility: per ASTM D 1970-01.
 
          2.6SUBSTRATE DECK
          ** NOTE TO SPECIFIER ** System 5-V, System 100 NS, System 150SL, Delete if not required.
 
          A.15/32 inch (11.9 mm) or greater plywood or wood plank.
          ** NOTE TO SPECIFIER ** System 100 180 degree SS copper, Delete if not required.
 
          B.5/8 inch (16 mm) or greater plywood or wood plank for new construction.
          ** NOTE TO SPECIFIER ** System 175 S 040 Aluminum, system 200 S 24 ga only, Delete if not required.
 
          C.22 gauge B-Deck for new construction.
 
          2.7ACCESSORIES
          ** NOTE TO SPECIFIER ** See Engineering Report for fastener specifications. Delete if not required.
 
          A.Exposed System Fasteners: Self-tapping zinc-plated, #10 x 1-1/2 inches (38 mm) hex-head carbon-steel screws, with a stainless-steel cap or zinc-aluminum-alloy head and EPDM or neoprene sealing washer.
          ** NOTE TO SPECIFIER ** See Engineering Report for fastener specifications. Delete if not required.
 
          B.Concealed System Fasteners: Fasteners: #10 by 1 inch (25 mm) stainless steel pancake head fasteners designed to withstand design loads.
 
          C.Concealed System Fasteners: Fasteners: #10 by 1 inch (25 mm) zinc-plated steel pancake head fasteners designed to withstand design loads.
 
          D.Blind Fasteners: High-strength aluminum or stainless-steel rivets.
 
          E.Panel Sealants:
          ** NOTE TO SPECIFIER ** Delete joint sealant not required.
          1.Butyl Tape: Pressure-sensitive, gray polyisobutylene compound sealant tape with release-paper backing; 3/16 inch thick x 7/8 inch wide minimum.
          2.Joint Sealant: ASTM C920-05; as recommended in writing by metal roof panel manufacturer.
          3.Joint Sealant: Butyl-Rubber-Based, Solvent-Release Sealant: ASTM C1311-02.
 
          F.Flashing and Trim: Provide flashing and trim as required to seal against weather and to provide finished appearance. Locations include eaves, rakes, corners, bases, framed openings, ridges, fascia, and fillers. Finish flashing and trim with same finish system as adjacent metal roof panels.
          ** NOTE TO SPECIFIER ** Typical residential material. Delete if not required.
          1.Material: Formed from 26 gauge (0.018min inch nominal) (0.41 mm) thick, metallic-coated steel sheet.
          ** NOTE TO SPECIFIER ** Typical commercial material. Delete if not required.
          2.Material: Formed from 24 gauge (0.023min inch nominal) (0.61 mm) or thicker, metallic-coated steel sheet.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          G.Gutters: Match profile of gable trim, complete with end pieces, outlet tubes, and other special pieces as required. Fabricate in minimum 120 inches (3048 mm) long sections, sized according to SMACNA's "Architectural Sheet Metal Manual." Furnish gutter supports spaced 36 inches (900 mm) o.c., fabricated from same metal as gutters. Finish gutters to match metal roof panels and roof fascia and rake trim.
          ** NOTE TO SPECIFIER ** Typical residential material. Delete if not required.
          1.Material: Formed from 26 gauge (0.018min inch nominal) (0.41 mm) thick, metallic-coated steel sheet.
          ** NOTE TO SPECIFIER ** Typical commercial material. Delete if not required.
          2.Material: Formed from 24 gauge (0.023min inch nominal) (0.61 mm) or thicker, metallic-coated steel sheet.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          H.Downspouts: Fabricated in 10 feet (3048 mm) long sections, complete with formed elbows and offsets. Finish downspouts to match metal roof panels.
          ** NOTE TO SPECIFIER ** Typical residential material. Delete if not required.
          1.Material: Formed from 26 gauge (0.018min inch nominal) (0.41 mm) thick, metallic-coated steel sheet.
          ** NOTE TO SPECIFIER ** Typical commercial material. Delete if not required.
          2.Material: Formed from 24 gauge (0.023min inch nominal) (0.61 mm) or thicker, metallic-coated steel sheet.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          I.Roof Curbs: Approved roof curb manufacturer
          1.L.M. Curbs
          2.KCC International Inc.
 
          J.Drexmet Paint Pen: Field touchup for minor scratches on trim and panels.
 
          2.8FINISH
          ** NOTE TO SPECIFIER ** Delete finish not required.
 
          A.Exposed Steel Finish: High-Performance Trinar Finish. Two-coat, thermocured paint system with fluoropolymer coats containing not less than 70 percent polyvinylidene fluoride (Kynar 500/Hylar 5000) resin by weight; complying with physical properties and coating performance requirements of AAMA 605.3-92 except as modified below:
          1.Humidity Resistance: 1500 hours per Federal Test Method Standard 141, Method 6201 or ASTM D2247-02.
          2.Salt-Spray Resistance: 1000 hours per ASTM B117-03.
          3.Accelerated Weathering: 3000 hours per ASTM D822, G151, G153.
 
          B.Exposed Aluminum Finish: High-Performance Trinar Finish. Two-coat, thermocured paint system with fluoropolymer coats containing not less than 70 percent polyvinylidene fluoride (Kynar 500/Hylar 5000) resin by weight; complying with physical properties and coating performance requirements of AAMA 2604 0r 2605 as required by paint system and color selection:
          1.Humidity Resistance: 1500 hours per Federal Test Method Standard 141, Method 6201 or ASTM D2247-02.
          2.Salt-Spray Resistance: 3000 hours per ASTM B117-03.
          3.Accelerated Weathering: 3000 hours per ASTM D822, G151, G153.
 
          C.Exposed Finish: Drexlume: ASTM A255, Acrylic Coated ASTM A792.
 
          D.High Performance Finish Color:
          ** NOTE TO SPECIFIER ** Delete color not required.
          1.Sandstone SR.54/TE.87 - SRI 64
          2.Bone White SR.67/TE.87 - SRI 81
          3.Regal White SR.70/TE.87 SRI 85
          4.Terra Cotta SR.40/TE.87.SRI 46
          5.Colonial Red SR.26/TE.87. SRI 27
          6.Brilliance Red* SR.38/TE.87.SRI 44
          7.Burgundy SR.28/TE.87. SRI 29
          8.Pacific Blue SR.26/TE.87.SRI 25
          9.Deep Blue Sea SR.26/TE.87.SRI 27
          10.Slate Blue SR.35/TE.87 SRI 38
          11.Aged Copper SR.41/TE.87. SRI 46
          12.Patina Green SR.32/TE.87.SRI 34
          13.Everglade Moss SR.29/TE.87. SRI 30
          14.Hemlock SR.34/TE.87. SRI 37
          15.Forest Green SR.28/TE.87. SRI 29
          16.Teal Blue SR.28/TE.87. SRI 29
          17.Hartford Green SR.25/TE.87. SRI 25
          18.Charcoal Gray SR.25/TE.87.SRI 25
          19.Slate Gray SR.41/TE.87. SRI 46
          20.Dove Gray SR.38/TE.87.SRI 42
          21.Island Blue SR.35/TE.87.SRI 38
          22.Surrey Beige SR.47/TE.87.SRI 46
          23.Sierra Tan SR.37/TE.87.SRI 41
          24.Buckskin SR.25/TE.87.SRI 25
          25.Med. Bronze SR.32/TE.87.SRI 34
          26.Dark Bronze SR.26/TE.87.SRI 27
          27.Mansard Brown SR.27/TE.87.SRI 28
          28.Matte Black SR.26/TE.87. SRI 27
          * NOTE TO SPECIFIER ** Premium colors.
          29.Bright Silver SR.54/TE.87. SRI 64
          30.Pre-weathered Galvalume® SR.27/TE.87. SRI 28
          31.Champagne SR.41/TE.87. SRI 46
          32.Metallic Copper SR.37/TE.87.SRI 41
          33.Antique Patina SR.27/TE.87. SRI 28
          * NOTE TO SPECIFIER ** Mill finish
          34.Falzinc SR.36/TE.87. SRI 37
          35.Drexlume SR.68/TE.10. SRI 55
 
          2.9FABRICATION
 
          A.General:
          ** NOTE TO SPECIFIER ** Delete factory or field formed provision.
          1.Factory Formed: Fabricate and finish metal roof panels and accessories at the factory by manufacturer's standard procedures and processes, as necessary to fulfill indicated performance requirements demonstrated by laboratory testing. Comply with indicated profiles, details with dimensional and structural requirements.
          2.Field Formed: Fabricate and finish metal roof panels and accessories onsite by manufacturer's standard procedures and processes, as necessary to fulfill indicated performance requirements demonstrated by laboratory testing. Comply with indicated profiles, details with dimensional and structural requirements.
 
          B.Sheet Metal Accessories: Fabricate flashing and trim to comply with recommendations in Drexel Metals LLC Details or SMACNA's "Architectural Sheet Metal Manual" that apply to the design, dimensions, metal, and other characteristics of item indicated.
 
          PART 3EXECUTION
 
          3.1EXAMINATION
 
          A.Do not begin installation until substrates have been properly prepared.
 
          B.If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
 
          3.2PREPARATION
 
          A.Deck Attachment:
          1.In accordance with applicable Building Code, or follow DMC Engineering Report for specifications for deck attachment.
          2.Re-roofing, where the deck is less than minimum provide additional attachment per DMC Engineering Report.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          B.Substrate: Install solid wood substrate of 15/32 inch thick minimum roof decking or sheathing on entire roof surface.
          1.Attachment: See DMC Engineering Report for size and spacing of fasteners.
 
          C.Install flashings and other sheet metal to comply with requirements specified in Section "Sheet Metal Flashing and Trim."
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          D.ACQ Treated Lumber: Do not install steel or aluminum roof systems over ACQ Treated Lumber without consulting panel manufacturer regarding proper installation procedures and requirements.
 
          E.On coastal application (within 2,800 feet (853 m) from Salt Water) use Drexmet Clear Air Dry Edge Coat products on all exposed cut edges to prevent edge creep and corrosion. Follow Drexel Metals LLC proper installation procedures.
 
          3.3INSULATION INSTALLATION
          ** NOTE TO SPECIFIER ** DMC 200 S 180 degree mechanical seam over B deck with iso board insulation. Delete if not required.
 
          A.Polyisocyanurate Foam Board Insulation: Minimum 3/4 inch (19 mm), maximum 4 inches (102 mm) thick approved rigid board insulation with a current NOA having a minimum 25 psi (172 kPa) compressive strength. Fastening density shall be in compliance with applicable building code and Roofing Application Standard RAS 117.
 
          3.4UNDERLAYMENT INSTALLATION
          ** NOTE TO SPECIFIER ** Delete underlayment provision not required.
 
          A.Synthetic Underlayment: Install Synthetic underlayment sheet on roof decking in accordance with the manufacturers recommended installation procedures.
 
          B.Felt Underlayment: Install felt underlayment and building-paper slip-sheet on roof sheathing under metal roof panels. Apply at locations indicated on Drawings, in shingle fashion to shed water, with lapped joints of not less than 2 inches (50 mm).
 
          C.Self-Adhering Sheet Underlayment: Install self-adhering sheet underlayment, wrinkle free, on roof sheathing under metal roof panels. Comply with temperature restrictions of underlayment, refer to manufacturer for installation; use primer rather than nails for installing underlayment at low temperatures. Apply at locations indicated on Drawings, in shingle fashion to shed water, with end laps of not less than 6 inches (152 mm) staggered 24 inches (610 mm) between courses. Overlap side edges not less than 3-1/2 inches (90 mm). Extend underlayment past eave approximately 1-1/2 inches (38 mm) to cover substrate. Roll laps with roller. Cover underlayment within 14 days.
 
          3.5METAL ROOF PANEL INSTALLATION, GENERAL
 
          A.Provide components required for a complete metal roof panel assembly including trim, copings, fascia, corner units, ridge closures, flashings, sealants, gaskets, fillers, closure strips, and similar items. Match material and finish of metal roof panels, unless otherwise indicated.
          1.Closures: Provide closures at eaves and ridges, fabricated of same metal as metal roof panels.
 
          B.General: Provide metal roof panels of full length from eave to ridge. Anchor metal roof panels and other components of the Work securely in place, with provisions for thermal and structural movement.
          1.Field cutting of metal roof panels by torch or saw blade is not permitted.
          2.Mechanically fasten ridge end of metal roof panels and allow eave end free movement due to thermal expansion and contraction.
          3.Provide metal Z closures at high-side eave, rake edges, rake walls and each side of ridge and hip caps.
          4.Flash and seal metal roof panels with weather closures at eaves, rakes, and at perimeter of all openings. Fasten with self-tapping screws.
          5.Lap metal flashing over metal roof panels to allow moisture to run over and off the material.
 
          C.Fasteners:
          ** NOTE TO SPECIFIER ** Exposed fastener for 5-V. Delete if not required.
          1.Roof Panels: Use Self-tapping zinc-plated, hex-head carbon-steel screws, with a stainless-steel cap or zinc-aluminum-alloy head and EPDM or neoprene sealing washer.
          ** NOTE TO SPECIFIER ** Concealed fastener for 100 NS, 150 SS, 150 SL, 175 SL, 175 S steel, . Delete if not required.
          2.Roof Panels: Use #10 by 1 inch (25 mm) pancake head - plated steel, low profile per DMC Engineering Report.
          ** NOTE TO SPECIFIER ** Concealed fastener for 100 SS copper, 150 SS aluminum, 175 S Aluminum,. Delete if not required.
          3.Roof Panels: Use #10 by 1 inch (25 mm) stainless steel pancake head fastener.
 
          D.Metal Protection: Where dissimilar metals will contact each other or corrosive substrates, protect against galvanic action by painting contact surfaces with bituminous coating, by applying rubberized-asphalt underlayment to each contact surface, or by other permanent separation as recommended by metal roof panel manufacturer. Fasteners used shall be Stainless Steel.
 
          E.Joint Sealers: Install gaskets, joint fillers, and sealants where indicated and where required for weatherproof performance of metal roof panel assemblies.
          1.Seal metal roof panel end laps with triple bead tape the full width of panel. Seal side joints where recommended by metal roof panel manufacturer.
          2.Prepare joints and apply sealants to comply with requirements in Section 07920.
 
          3.6FIELD-ASSEMBLED METAL ROOF PANEL INSTALLATION
          ** NOTE TO SPECIFIER ** Exposed fastener system. Delete if not required.
 
          A.Exposed Fastener Metal Roof Panels: Fasten metal roof panels to solid substrate at 16 inches (406 mm) o.c. or per UL 580 - TAS 125 specification, or per Miami-Dade County NOA #, or engineer recommendation based on project location and wind load requirements.
          ** NOTE TO SPECIFIER ** 180 degree 16 oz. copper standing seam. Delete if not required.
 
          B.Concealed Fastener Standing Seam Copper Roof Panels: Fasten metal roof panels to supports with stainless steel concealed clips at 18 inches (457 mm) o.c., two fasteners per clip
          1.Install clips to deck with two #10 by 1 inch (25 mm) stainless steel pancake head fasteners.
          2.Panels shall be seamed to a full 180 degrees.
          ** NOTE TO SPECIFIER ** Mechanical seamed standing seam. Delete if not required.
 
          C.Mechanical Seamed Metal Roof Panels: Fasten metal roof panels to solid substrate with concealed clips at maximum spacing o.c., two fasteners per clip, or per UL 580 specification or engineer recommendation based on project location and wind load requirements.
          ** NOTE TO SPECIFIER ** 200 S and 200 S Aluminum. Delete if not required.
          1.Clip Spacing: 24 inches (610 mm).
          ** NOTE TO SPECIFIER ** 150 SS. Delete if not required.
          2.Clip Spacing: 16 inches (406 mm).
          3.Install clips to deck with two #10 by 1 inch (25 mm) stainless steel pancake head fasteners.
          ** NOTE TO SPECIFIER ** 150 S only. Delete if not required.
          4.Seam Panels to a full 90 degrees.
          ** NOTE TO SPECIFIER ** 150 S and 200 S Delete if not required.
          5.Hand seam panels 90 degrees and then use a robotic seamer to seam the panels to a full 180 degrees.
          ** NOTE TO SPECIFIER ** Snap lock standing seam. Delete if not required.
 
          D.Snap Lock Metal Roof Panels: Fasten metal roof panels to solid substrate with concealed clips at maximum spacing o.c., two fasteners per clip, or per UL 580 specification or engineer recommendation based on project location and wind load requirements. The female leg of panel is snapped over the male leg of panel.
          ** NOTE TO SPECIFIER ** 150 SL, 175 S 040 Aluminum. Delete if not required.
          1.Clip Spacing: 18 inches (457 mm).
          ** NOTE TO SPECIFIER ** 175 S. Delete if not required.
          2.Clip Spacing: 16 inches (406 mm).
          ** NOTE TO SPECIFIER ** 175 S 032 Aluminum. Delete if not required.
          3.Clip Spacing: 12 inches (305 mm).
          4.Install clips to deck with two #10 by 1 inch (25 mm) stainless steel pancake head fasteners.
          ** NOTE TO SPECIFIER ** 100 NS standing seam. Delete if not required.
 
          E.Standing Seam Metal Roof Panels: Fasten metal roof panels to solid substrate through nail strip, one at each end and 10-1/2 inches (267 MM) o.c. or per UL 580 specification or engineer recommendation based on project location and wind load requirements.
          ** NOTE TO SPECIFIER ** Delete if not required.
 
          F.Metal Soffit Panel: Provide metal soffit panels full width of soffits. Install panels perpendicular to support framing.
          1.Flash and seal panels with weather closures where metal soffit panels meet walls and at perimeter of all openings.
 
          3.7ACCESSORY INSTALLATION
 
          A.General: Install accessories with positive anchorage to building and weathertight mounting and provide for thermal expansion. Coordinate installation with flashings and other components.
          1.Install components required for a complete metal roof panel assembly including trim, copings, ridge closures, seam covers, flashings, sealants, gaskets, fillers, closure strips, and similar items.
          2.Comply with performance requirements, manufacturer's written installation instructions, and SMACNA's "Architectural Sheet Metal Manual." Provide concealed fasteners where possible, and set units true to line and level as indicated. Install work with laps, joints, and seams that will be permanently watertight and weather resistant.
          ** NOTE TO SPECIFIER ** Delete if not required.
          3.Provide elbows at base of downspouts to direct water away from building.
          ** NOTE TO SPECIFIER ** Delete if not required.
          4.Tie downspouts to underground drainage system indicated.
 
          3.8CLEANING AND PROTECTION
 
          A.Remove temporary protective coverings and strippable films if applicable, if any, as metal roof panels are installed, unless otherwise indicated in manufacturer's written installation instructions. On completion of metal roof panel installation, clean finished surfaces as recommended by metal roof panel manufacturer. Maintain in a clean condition during construction.
 
          B.To prevent rust staining, remove any fillings caused by drilling or cutting immediately from finished surfaces.
 
         
END OF SECTION