07 71 00 Roof Specialties.docx

VA Medical Center - Albany, NY Date of Issue 2/14/2022

Samuel S. Stratton Facility

2022 Chiller Roof Replacement

SECTION 077100 - ROOF SPECIALTIES

This Tremco Product Masterspec specifies Tremco TremLock engineered metal roof edge systems, consisting of fascia, coping, and counterflashing components.

Review Tremco product ratings information available on Sharepoint and visit http://www.metalera.com/Private-Label/Tremco for additional information, necessary to make product selections and edit this specification section.

The Division 07 metal roofing/wall panel sections, Division 07 roofing membrane sections and/or Division 07 Section "Sheet Metal Flashing and Trim," specify the roof, wall, and parapet products and custom roof edge, copings, and roof drainage items that together with the work of this Section form the total roof system.

GENERAL

IMPORTANT NOTICE ABOUT THIS SECTION! The selection of materials and finishes for each product listed in this Section is dependent upon the warranty, performance and/or other factors. NOT ALL OF THE LISTED OPTIONS WILL BE AVAILABLE FOR EACH PRODUCT AND PROJECT CONDITION. Refer to Product Ratings found on Tremco Roofing SharePoint Secure Site under Product/Reference Information/Metal/TremLock Edge Metal. Use this information to select the material and finish from the available offerings based upon the desired product to meet the project-specific performance and warranty requirements.

SUMMARY

Section Includes:

Manufactured roof-edge specialties (fasciae, drip edges and gravel stops).

Retain optional "Related Information" paragraph below as required to coordinate work specified in several sections. Only list sections that are actually included in the Project Manual and available to the Contractor.

Related Information:

Division 07 Section "Preparation for Re-Roofing" for reuse of existing manufactured counterflashings.

PREINSTALLATION MEETINGS

Preinstallation Conference: Conduct conference at Project site, in conjunction with roofing preinstallation conference specified in Division 07 roofing section.

Meet with Owner, Owner's Consultant, Owner's insurer if applicable, Installer, and installers whose work interfaces with or affects roof specialties including installers of roofing materials and accessories.

Examine substrate conditions for compliance with requirements, including flatness and attachment to structural members.

Review special roof details, roof drainage, and condition of other construction that will affect roof specialties.

ACTION SUBMITTALS

Product Data: For each type of product indicated. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes.

Retain Sustainable Design Paragraph and optional subparagraph below if recycled content documentation is required.

Sustainable Design Submittals: Indicate percentages by weight of postconsumer and preconsumer recycled content for products having recycled content Include statement indicating costs for each product having recycled content.

Product Test Reports: Based on evaluation of comprehensive tests performed by a qualified testing agency, for roof-edge flashings.

INFORMATIONAL SUBMITTALS

Qualification Data: For manufacturer.

Retain "Product Certificates" and "Product Test Reports" paragraphs below for each type of roof specialty when necessary/required by project conditions.

Product Certificates: Provide manufacturer’s certificates for roof-edge specialties indicating compliance with performance requirements including the following:

Edit list below to correspond to applicable requirements retained in Part 2 article "Performance Requirements." First requirement below is required by IBC.

ANSI/SPRI/FM 4435/ES-1 compliance.

Sample Warranty: For manufacturer's special warranty.

CLOSEOUT SUBMITTALS

Maintenance Data: For roofing specialties to include in maintenance manuals.

QUALITY ASSURANCE

Manufacturer Qualifications: A qualified manufacturer offering products meeting requirements that are ANSI/SPRI ES-1 tested to specified design pressure.

DELIVERY, STORAGE, AND HANDLING

Do not store roof specialties in contact with other materials that might cause staining, denting, or other surface damage. Store roof specialties away from uncured concrete and masonry.

Protect strippable protective covering on roof specialties from exposure to sunlight and high humidity, except to extent necessary for the period of roof specialties installation.

PROJECT / FIELD CONDITIONS

Field Measurements: Verify profiles and tolerances of roof-specialty substrates by field measurements before fabrication, and indicate measurements on Shop Drawings.

Coordination: Coordinate roof specialties with flashing, trim, and construction of parapets, roof deck, roof and wall panels, and other adjoining work to provide a leakproof, secure, and noncorrosive installation.

WARRANTY

Retain "Roofing-System Warranty" Paragraph below when roof specialties are required to be included in a roofing-membrane manufacturer's system warranty; coordinate with Project roofing-membrane Section Roofing-System Warranty: Roof specialties are included in warranty provisions in Division 07 roofing Section.

OPTIONAL: Include and edit the following windspeed warranty riders for selected products, when on of the listed Tremco products are specified as basis-of-design. Delete when deferring to Manufacturer’s standard Warranty or to performance requirements established by code.

Special Wind Speed Warranty for Basis-of-Design Product:

TremLock Eco/Eco-Slot Series Drip Edge and Eco Gravel Stop: 10 year warranty for windspeed up to 90 mph (144 kph).

PRODUCTS

PERFORMANCE REQUIREMENTS

General Performance: Roof specialties shall withstand exposure to weather and resist thermally induced movement without failure, rattling, leaking, or fastener disengagement due to defective manufacture, fabrication, installation, or other defects in construction Retain paragraph below and edit recycled content requirement to correspond to source of supply recycled content data and LEED or general sustainable design Project requirements.

Recycled Content of Steel Products: Postconsumer recycled content plus one-half of preconsumer recycled content not less than 25 percent.

Retain "SPRI Wind Design Standard" Paragraph below if Project is governed by the International Building Code (IBC) or if ANSI/SPRI ES-1 sets a minimum quality standard. Coordinate requirements in ANSI/SPRI ES-1 with other requirements in this Section. Verify availability of copings or roof-edge specialties that meet these requirements. See Evaluations for additional information on ANSI/SPRI ES-1 testing programs.

Consult Product Data for tested ratings. Do not specify less than rating required by building-specific calculation in accordance with FM and applicable building code.

SPRI Wind Design Standard: Manufacture and install roof-edge specialties tested according to ANSI/SPRI ES-1.

Indicate wind design pressure on Drawings or in "Design Pressure" Subparagraph below. Design pressure is determined by formulas in the IBC or ANSI/SPRI ES-1, as applicable, that account for basic wind speed, exposure factor, building height, building importance factor, and pressure coefficient that incorporates a gust factor.

1 pound per square ft (psf) = 0.048 kilopascals (kPa).

Design Pressure: 78.5 psf.

Thermal Movements: Allow for thermal movements from ambient and surface temperature changes to prevent buckling, opening of joints, hole elongation, overstressing of components, failure of joint sealants, failure of connections, and other detrimental effects. Provide clips that resist rotation and avoid shear stress as a result of thermal movements. Base calculations on surface temperatures of materials due to both solar heat gain and nighttime-sky heat loss.

Temperature Change (Range): 120 deg F (67 deg C), ambient; 180 deg F (100 deg C), material surfaces.

MANUFACTURERS

Basis of Design: The roof system specified in this Section is based upon products of Tremco, Inc., Beachwood, OH, (800) 562-2728, www.tremcoroofing.com that are named in other Part 2 articles. Provide specified products.

Retain "Source Limitations" Paragraph below if required for Project. Coordinate with "Warranty" Article of this Section and requirements of Project roofing-membrane Section.

Source Limitations: Obtain roof specialties approved by manufacturer providing roofing-system warranty specified in Division 07 roofing Section.

EXPOSED METALS

Edit below to include various types of metals used in the project. Coordinate with individual product selections. Indicate finish type(s) under individual product listings.

Aluminum Sheet: ASTM B209/B209M, alloy as standard with manufacturer for finish required, with temper to suit forming operations and performance required.

Surface: Smooth, flat finish as indicated.

CONCEALED METALS

Edit below to include various types of metals used in the project. Coordinate with individual product selections.

Aluminum Sheet: ASTM B209/B209M, alloy and temper recommended by manufacturer for type of use and structural performance indicated, mill finished.

MISCELLANEOUS MATERIALS

General: Provide materials and types of fasteners, protective coatings, sealants, and other miscellaneous items required by manufacturer for a complete installation.

Fasteners: Manufacturer's recommended fasteners, suitable for application and designed to meet performance requirements. Furnish the following unless otherwise indicated:

Exposed Penetrating Fasteners: Gasketed screws with hex washer heads matching color of sheet metal.

Fasteners for Aluminum: Aluminum or Series 300 stainless steel.

Fasteners for Zinc-Coated (Galvanized) Steel Sheet: Series 300 stainless steel or hot-dip zinc-coated steel according to ASTM A153/A153M or ASTM F2329.

Elastomeric Sealant: ASTM C920, elastomeric silicone polymer sealant of type, grade, class, and use classifications required by roofing-specialty manufacturer for each application.

IMPORTANT! Materials, thicknesses, finishes and warranties vary greatly. Refer to Product Data/Matrix to determine available configurations and warranties for TremLock products listed in the Section.

MANUFACTURED ROOF-EDGE SPECIALTIES

SELECT AND EDIT THE FOLLOWING FOR TREMLOCK ECO GRAVEL STOP AND/OR ECO DRIP EDGE S.

Gravel Stops:

Description: Manufactured two-piece roof-edge specialty systems consisting of metal fascia covers, in section lengths not exceeding 12 feet (3.6 m), with a formed cleat to engage and secure fascia cover, and concealed splice plates. Provide matching prefabricated continuously welded corner units.

Roof-Edge Fasciae Unit Profile:

Unit Face Height: Match existing.

Gravel Stop: Flashed-in fascia with gravel stop profile and canted drip on face, with continuous galvanized concealed cleat and concealed splice plates. Provide matching prefabricated continuously welded corner units.

Basis-of-Design Product: Tremco, TremLock Eco Gravel Stop Fascia Cover Securement Method: Snap on cleat at front; fastener at roof.

Roofing System: Built-up.

Fascia Cover Material: Formed aluminum sheet, nominal 0.040-inch (1.02-mm) thick.

Finish: High-performance organic (PVDF) coating.

Color: As selected by Owner from manufacturer's full range.

FINISHES

Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" for recommendations for applying and designating finishes.

Protect mechanical and painted finishes on exposed surfaces from damage by applying a strippable, temporary protective covering before shipping.

Appearance of Finished Work: Noticeable variations in same piece are not acceptable. Variations in appearance of adjoining components are acceptable if they are within the range of approved Samples and are assembled or installed to minimize contrast.

High-Performance Organic (PVDF) Coating: Prepare, pretreat, and apply coating to exposed metal surfaces to comply with ASTM A755/A755M and coating and resin manufacturers' written instructions.

NOTE: Retain one or both of the following paragraphs as needed for Project components; delete if not required. Retain option in first paragraph if any roof specialties are extruded aluminum. AAMA 2605 is for coil coated and extruded aluminum. The option of whether to use 2-coat or 3-coat is left to the coater to determine what is required to meet the performance and warranty requirements specified.

Aluminum Coil Coating Finishes: Two-Coat or Three-Coat Fluoropolymer: AAMA 2605 and as additionally required to meet specified finish performance and warranty requirements. Fluoropolymer finish containing not less than 70 percent polyvinylidene fluoride (PVDF) resin by weight in color coat. Prepare, pretreat, and apply coating to exposed metal surfaces to comply with coating and resin manufacturers' written instructions.

Concealed Surface Finish: Apply pretreatment and manufacturer's standard acrylic or polyester backer finish consisting of prime coat and wash coat with a minimum total dry film thickness of 0.5 mil (0.013 mm).

Clear Anodic Finish, Coil Coated: AAMA 611, AA-M12C22A41, Class I, 0.018 mm or thicker.

EXECUTION

EXAMINATION

Examine substrates, areas, and conditions, with Installer present, to verify actual locations, dimensions, and other conditions affecting performance of the Work.

Examine walls, roof edges, and parapets for suitable conditions for roof specialties.

Verify that substrate is sound, dry, smooth, clean, sloped for drainage, and securely anchored.

Proceed with installation only after unsatisfactory conditions have been corrected.

INSTALLATION, GENERAL

General: Install roof specialties according to manufacturer's written instructions. Anchor roof specialties securely in place, with provisions for thermal and structural movement. Use fasteners, solder, protective coatings, separators, sealants, and other miscellaneous items as required to complete roof-specialty systems.

Install roof specialties level, plumb, true to line and elevation; with limited oil-canning and without warping, jogs in alignment, buckling, or tool marks.

Provide uniform, neat seams with minimum exposure of solder and sealant.

Install roof specialties to fit substrates and to result in watertight performance. Verify shapes and dimensions of surfaces to be covered before manufacture.

Torch cutting of roof specialties is not permitted.

Do not use graphite pencils to mark metal surfaces.

Metal Protection: Protect metals against galvanic action by separating dissimilar metals from contact with each other or with corrosive substrates by painting contact surfaces with bituminous coating or by other permanent separation as recommended by manufacturer.

Coat concealed side of uncoated aluminum roof specialties with bituminous coating where in contact with wood, ferrous metal, or cementitious construction.

Underlayment: Where installing metal flashing directly on cementitious or wood substrates, install a course of self-adhering, high-temperature sheet underlayment.

Bed flanges in thick coat of asphalt roofing cement where required by manufacturers of roof specialties for waterproof performance.

Expansion Provisions: Allow for thermal expansion of exposed roof specialties.

Space movement joints at a maximum of 12 feet (3.6 m) with no joints within 18 inches (450 mm) of corners or intersections unless otherwise shown on Drawings.

When ambient temperature at time of installation is between 40 and 70 deg F (4 and 21 deg C), set joint members for 50 percent movement each way. Adjust setting proportionately for installation at higher ambient temperatures.

Fastener Sizes:

Wood Blocking or Sheathing: Use fasteners of sizes that penetrate wood blocking or sheathing not less than 1-1/4 inches (32 mm) for nails and not less than 3/4 inch (19 mm) for wood screws.

Other Substrates: Use fasteners of sizes that penetrate substrate not less than recommended by fastener manufacturer to achieve maximum pull-out resistance.

Seal joints with elastomeric sealant as required by roofing-specialty manufacturer.

Seal joints as required for watertight construction. Place sealant to be completely concealed in joint. Do not install sealants at temperatures below 40 deg F (4 deg C).

Coordinate installation of roof-edge specialties with applicable low-slope roofing Section.

INSTALLATION OF ROOF-EDGE SPECIALTIES

Install clips, cleats, cants, and other anchoring and attachment accessories and devices with concealed fasteners.

Anchor roof edgings with manufacturer's required devices, fasteners, and fastener spacing to meet performance requirements.

CLEANING AND PROTECTION

Clean exposed metal surfaces.

Clean off excess sealants.

Retain the following when solder is used.

Clean and neutralize flux materials. Clean off excess solder.

Remove temporary protective coverings and strippable films as roof specialties are installed. On completion of installation, clean finished surfaces including removing unused fasteners, metal filings, pop rivet stems, and pieces of flashing. Maintain roof specialties in a clean condition during construction.

Replace roof specialties that have been damaged or that cannot be successfully repaired by finish touchup or similar minor repair procedures.

END OF SECTION 077100

077100 - Page 7 of 7

ROOF SPECIALTIES