Materials:R-Mer Loc

Manufacturer: GARLAND CANADA INC.

Contact Address: See Membership List in Section 1.

Product Group: ARCHITECTURAL STANDING SEAM METAL ROOFING

SECTION 07 41 00.003 / 07 41 00.005

MANUFACTURED METAL ROOFING PANELS

PART 1 - GENERAL

The roofing assembly / material information published in the RGC Roofing Practices Manual DOES NOT represent a complete set of the manufacturer's published data, nor does it represent a fully detailed specification. Please contact the manufacturer’s technical representative for full technical, specification and product application information.

Note: This section includes system descriptions for R-MER LOC / R-MER LOC LX pre-formed standing seam roof panels available in Galvalume and Galfan. For Copper panels, p. Specifications available in MasterFormat 2004, published by the Construction Specifications Institute (CSI), Alexandria, VA.

1.1 DESCRIPTION

.1 R-Mer Loc is an architectural standing seam roof system available in several attractive colors. The watertight seam combined with the strength of R-Mer Loc’s 18 gauge one piece clip, make this an ideal choice whenever considering re-roof applications, mansards and/or new construction.

.2 General

.1 Furnish all labor, material, tools, equipment, and services for all preformed roofing as indicated, in accord with the provisions of the Contract Documents. The Metal Roofing Manufacturer will provide all components required for a complete metal roofing system to include panels, panel clips, trim/flashing, fascias, ridge, closures, sealants, fillers and any other required items.

.2 Completely coordinate with work of all other trades.

.3 See Division Drawings and general provisions of the Contract, including the Conditions of the Contract and Division 01 Specification Sections apply to this section.

.3 Related Sections:

.1 Section 07 05 00 - Common Work Results for Thermal and Moisture Protection.

.2 Section 07 01 41 - Maintenance of Manufactured Metal Roofing Panels.

.4 Related Work Specified Elsewhere:

Note: The following references are suggestions. They should be supplemented or omitted according to specific project requirements.

.1 Division 05 Section - Metal Decking

.2 Division 06 Section - Rough Carpentry for wood substrate components

.3 Division 07 Section - Roof Insulation

.4 Division 07 Section - Above-Grade Vapor Barriers

.5 Division 07 Section - Sheet Metal Flashing and Trim

.6 Division 07 Section - Roof Specialties

.7 Section 07 01 40 Maintenance of Manufactured Metal Roofing Panels

.8 Division 08 Section - Roof Windows and Skylights

.9 Division 26 Section - Facility Lightning Protection Systems

1.2 REFERENCES

.1 American Iron and Steel Institute (AISI):

.1 1996 Edition Specification for the Design of Cold-Formed Steel Structural Members.

.2 American Society of Civil Engineers (ASCE):

.1 ASCE 7-05 Minimum Design Loads for Buildings and Other Structures.

.3 American Society for Testing and Materials (ASTM):

.1 ASTM A792 Standard Specification for Steel Sheet, 55% Aluminum-Zinc Alloy-Coated by the Hot-Dip Process.

.2 ASTM A875 Standard Specification for Steel Sheet, Zinc-5% Aluminum Alloy-Coated by the Hot Dip Process.

.3 ASTM D1056 Standard Specification for Flexible Cellular Materials - Sponge or Expanded Rubber.

.4 ASTM D3575 Standard Test Methods for Flexible Cellular Materials made from Olefin Polymers.

.5 ASTM E283 Standard Test Method for Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen.

.6 ASTM E331 Standard Test Method for Water Penetration of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference.

.7 ASTM E1592 Standard Test Method for Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure Difference.

.8 ASTM E1646 Standard Test Method for Water Penetration of Exterior Metal Roof Panel Systems by Uniform Static Air Pressure Difference.

.9 ASTM E1680 Standard Test Method for Rate of Air Leakage Through Exterior Metal Roof Panel Systems.

.4 Sheet Metal and Air Conditioning Contractors National Association (SMACNA):

.1 Architectural Sheet Metal Manual, 5th edition.

.5 Underwriters' Laboratories (UL):

.1 UL 263 Fire Tests of Building Constructions and Materials.

.2 UL 580 Tests for Uplift Resistance of Roof Assemblies.

.3 UL 790 Tests for Fire Resistance of Roof Covering Materials.

1.3 QUALITY ASSURANCE

.1 Installer Qualifications: Engage an Installer who has completed the Manufacturer's Approved Roofing Contractor course and is currently certified for the installation of this roof system.

.2 If required, fabricator/installer shall submit work experience and evidence of adequate financial Responsibility. The Owner's representative reserves the right to inspect fabrication facilities in determining qualifications.

.3 Source Limitations: Obtain all components of roof system from a single manufacturer, including roll goods materials if required. Secondary products that are required shall be recommended and approved in writing by the roofing system Manufacturer.

.1 Upon request of the Architect or Owner, submit Manufacturer's written approval of secondary components in list form, signed by an authorized agent of the Manufacturer.

.2 Manufacturer shall have direct authority and control over all fabrication of steel components as well as the raw materials used in their fabrication.

.4 Source Quality Control: Manufacturer shall have in place a documented, standardized quality control program such as ISO-9001 approval.

.5 Engage the Manufacturer's Field Representative to conduct required periodic inspections of work in progress and shall furnish written documentation of all such inspections.

1.4 DESIGN AND PERFORMANCE CRITERIA

.1 Thermal Expansion and Contraction:

.1 Completed metal roofing and flashing system shall be capable of withstanding expansion and contraction of components caused by changes in temperature without buckling, producing excess stress on structure, anchors or fasteners, or reducing performance ability.

Note: The design temperature differential for thermal expansion and contraction is the difference between the hottest and coldest panel surface temperature. The differential temperature should be based on the temperature range during the anticipated life cycle of the system, not the temperature change during a single year. Studies by the Army Corps of Engineers recommend this range to be 160ºF to 240ºF or more depending on climate, insulation, materials, and surface color.

.2 The design temperature differential shall be not less than [insert design temperature differential (200ºF)].

.3 Interface between panel and clip shall provide for unlimited thermal movement in each direction along the longitudinal direction.

.4 Location of metal roofing rigid connector shall be at roof ridge unless otherwise approved by the Project Architect. Metal ridge connector may require design as per job conditions by specified manufacturer.

.2 Uniform wind load capacity:

.1 Installed roof system shall withstand negative (uplift) design wind loading pressures complying with the following criteria. Anchor clips shall be installed exactly as spacing given. Each of the following is necessary to determine the appropriate design wind pressure for roof components. Please contact a Garland sales representative for assistance in determining the proper wind uplift design criteria. Typical selections are shown; however, every structure requires detailed attention for proper system design.

a) Design Code: ASCE 7-05, Method 2 for Components and Cladding.

b) Safety Factor: 1.650 after any load reduction or material stress increase.

c) Category [I, II, III, or IV] Building with an Importance Factor of [0.77, 1.00, or 1.15].

d) Wind Speed: [contact Garland sales rep] mph.

e) Ultimate Pullout Value: [contact Garland sales rep.] pounds per each of the two fasteners holding the panel anchor to the roof decking or framing system.

f) Exposure Category: [A, B, C, or D].

g) Design Roof Height: [contact Garland sales rep.] feet.

h) Minimum Building Width: [contact Garland sales rep.] feet.

i) Roof Pitch: [contact Garland sales rep.] inches per foot.

Note: Hips and ridges are considered as Zone 1 field of roof for roof slopes of 10 degrees (2 inches per foot) or less.

Roof Area Design Uplift Pressure:

Zone 1 - Field of roof [contact Garland sales rep.] psf

Zone 2 - [Eaves, ridges, hips,] and rakes [contact Garland sales rep.] psf

Zone 3 - Corners [contact Garland sales rep.] psf

.2 Capacity shall be determined using pleated airbag method in accordance with ASTM E1592, testing of sheet metal roof panels. Allowable safe working loads shall be determined by dividing the ultimate test load by the safety factor specified above.

.3 Uniform Positive Load Capacity.

.1 The installed roof system shall be capable of resisting the following positive uniform roof loads: Roof Live Load of 20 psf; Roof Snow Load of [center required snow load here] psf.

.2 Dead Load: Loading of the roof structure, due to tear off of existing, and/or installation of new roofing materials shall not exceed the present loading due to weight of the existing roofing system. [contact Garland Sales Rep] psf is being removed from the roof through tear off as specified in section 3.0. [contact Garland Sales Rep] psf will be added to the weight of the existing roof through installation as specified in section 3.0. Total addition of weight to the roof structure is [contact Garland Sales Rep] psf.

.3 Capacity to resist positive loads shall be determined by empirical calculations in accordance with AISI. Calculation shall be sealed by a registered professional engineer.

.4 Installed roof system shall carry positive uniform design loads with a maximum system deflection of L/180 as measured at the rib (web) of the panel.

.4 ASTM E283: Static pressure air infiltration (doors, windows, curtain walls):

.1 Pressure Leakage Rate

a) 1.57 PSF 0.0007 cfm/sq.ft.

b) 6.24 PSF 0.0002 cfm/sq.ft.

c) 20.0 PSF 0.0036 cfm/sq.ft.

.5 ASTM E331: Static pressure water infiltration (doors, windows, curtain walls):

Pressure Result

5 Gal./Hr. per S.F. and Static No Leakage

Pressure of 20.0 Psf for 15 minutes

.6 ASTM E1680: Static pressure air infiltration (roof panels):

.1 Pressure Leakage Rate

a) 1.57 PSF 0.0012 cfm/sq.ft.

b) 6.24 PSF 0.0001 cfm/sq.ft.

c) 20.0 PSF 0.0011 cfm/sq.ft.

.7 ASTM E1646: Static pressure water infiltration (roof panels):

Pressure Result

5 Gal./Hr. per S.F. and Static No Leakage

Pressure of 20.0 Psf for 15 minutes

.8 Capacities for gauge, span or loading other than those tested may be determined by interpolation of test results within the range of test data. Extrapolations for conditions outside test range are not acceptable.

1.5 DELIVERY, STORAGE, AND HANDLING

.1 Manufacturer's responsibilities:

.1 All roof panels shall be shipped from the manufacturer with strippable film or similar packaging material separating the individual panels to minimize flexing, stressing, scratching or otherwise damaging the material during transit to the job.

.2 Fully cover steel with tarpaulins or similar protective cover during transit to prevent dirt and debris from coming in contact with the finished goods.

.2 Installer's responsibilities:

.1 Stack pre-finished materials to prevent twisting, bending, abrasion and denting and elevate one end to facilitate moisture run-off.

.2 Unload roof panels using a boom or crane, supporting the panels in at least two locations during lifting, and never lift more than three panels at a time.

.3 Protect moisture-sensitive materials and water-based from the weather.

.4 Inspect materials upon delivery. Reject and remove physically damaged or marred material from project site.

PART 2 - PRODUCTS

2.1 MANUFACTURER

.1 The design is based upon R-MER LOC / R-MER LOC LX roofing systems engineered and manufactured by; Garland Canada Inc., The Garland Company, Imetco

PART 3 - EXECUTION and INSTALLATION

The roofing assembly / material information published in the RGC Roofing Practices Manual DOES NOT represent a complete set of the manufacturer's published data, nor does it represent a fully detailed specification. Please contact the manufacturer’s technical representative for full technical, specification and product application information.

3.1 GENERAL

.1 Installation is to be done in accordance with Manufacturer’s instructions and approved installation specifications and shop drawings.

1. Develop straight lines from ridge to eave. Lay out the panels for installation.

2. Snap a chalk line for clip spacing layout.

3. Lay benchmarks across the roof deck in vertical orientation.

4. Install clips and panels until the rake or jamb transition.

5. Terminate panel installation with gable clip and rake or jamb detail.

6. Install head closure detail at ridge or hip assembly.

7. Install associated trim at ridge or hip detail.

8. Install edge stiffener at eave.

9. Snap seam cap over vertical panel legs.

APPLICATION DETAILS

The details listed provide metal panel installation information and the fabrication of metal flashing details for standing seam metal roof systems and proprietary metal roof systems. More specific details are available from metal roof panel manufacturers. RGC Guarantee Standards for metal roofing systems are to be used in conjunction with this section.

E1.7.1 Underlayment / Modified Bitumen Ice Dam Protection

E1.7.2 Modified Bitumen Underlayment / Ice Dam Protection

E1.7.3 Eave & Gable Flashing for Standing Seam Systems

E1.7.4 Eave & Gable Protection for Proprietary Systems

E1.7.5 Metal Valley - Hooked Flashing

E1.7.6 Metal Valley - Unhooked Flashing

E1.7.7 Roof-to-Wall Flashing

E1.7.8 Equipment Support Stand / Pipe Flashing

E1.7.9 Equipment Support Stand, Pipe Flashing Split Panel Detail

E1.7.10 Curb for Rooftop Equipment

E1.7.11 Ridge / Hip Cap Flashing

E1.7.12 Notched Ridge / Hip Cap Flashing