Att. 1 Specifications 240703.pdf

SECTION 011000 - SUMMARY

PART 1 - GENERAL

1.1 PROJECT INFORMATION

A. Project Identification: Doniphan Warehouse (ID # 51572) Roof Replacement

1. Project Location: #4 Confederate Ridge Road, Doniphan, MO 63935

B. Owner: USDA Forest Service, Mark Twain National Forest

C. The Work consists of:

1. Bid Item 1: Warehouse Roof Replacement

a. Remove and dispose of existing asphalt shingles and felt/underlayment to decking and perform all incidental demolition work. All waste materials shall be removed from government property and disposed of by the contractor in accordance with all applicable laws and regulations. Furnish and install new underlayment materials, sheet metal flashings and trim, drip edges to match shingles, roof vents, ridge vent, new vent pipe collars, and shingles. Install new flashing around all roof protrusions and valleys. Remove and reinstall guttering if needed. The building approximately

82 feet by 40 feet.

b. Once felt/underlayment is removed, pictures are REQUIRED be taken of the condition of the sheathing and eave structure around all sides of building that is visible and sent to COR for acceptance prior to any replacement of sheathing and prior to installation of new underlayment. If any decking is deteriorated, wet, blistered, or damaged is found, immediately contact the COR.

2. Optional Item 1: Rotted/Damaged Roof Decking Replacement

It is not anticipated that any decking will need to be replaced, however, any rotted/damaged decking requiring replacement on the buildings will be completed through contract modification at the unit price listed in the Schedule of Items for Optional Item 1 (OI-1).

Decking replacement shall be with like kind materials.

NOTE 1: All building dimensions listed are approximate. Contractor is responsible for confirming actual building dimensions.

NOTE 2: All items not specifically mentioned in the Contract Documents necessary to complete the specified work shall be incidental to the cost of the project.

D. Owner-Furnished Products: None.

1.2 WORK RESTRICTIONS

A. Contractor's Use of Premises: During construction, Contractor will have limited use of building indicated. Contractor's use of premises is limited only by Owner's right to perform work or employ other contractors on portions of Project and as follows:

1. Owner will occupy premises during construction. During construction, Contractor will have limited use of the building indicated and shall not cause undo interference with normal office operations between 8:00 AM and 4:30 PM Monday – Friday, while working on roof repair. Other than above Contractor will not be restricted as to when he can work. Work must be coordinated with the COR. Clean up work areas and return to usable condition at the end of each work period.

2. Driveways, Walkways, and Entrances: Keep driveways, parking garage, loading areas, and entrances serving premises clear and available to Owner, Owner's employees, and emergency vehicles at all times. Do not use these areas for parking or storage of materials.

B. Nonsmoking Building: Smoking is not permitted within the building or within 25 feet of entrances, operable windows, or outdoor-air intakes.

1.3 SAFETY

A. Contractor shall comply with all State and Federal safety regulations during the performance of the work.

1.4 STORAGE

A. The Contractor shall be responsible for all materials and equipment stored on the project site.

Locations of the Contractor’s storage areas shall be subject to approval by the COR.

1.5 CLEANUP

A. All refuse, including garbage, rubbish, construction refuse, unused materials, and wastes from the

Contractor’s operations, shall be the property of the Contractor and shall be removed from Forest

Service property.

B. At the end of each workday, the Contractor shall clean up the construction area. The cleanup operations shall include the removal of any roofing nails from the lawn and grounds around the perimeter of the building. All debris shall either be placed in a construction dumpster or removed from the construction site. In addition, all pavement areas and sidewalks shall be swept clean of all debris and dust. Before leaving the Site on Fridays a more complete policing, pickup and securing of the Site shall be performed. The Site shall be left in a neat and orderly manner as determined by the COR with the public protected from construction related hazards.

C. Before leaving the Site on Fridays a more complete policing, pickup and securing of the Site shall be performed. The Site shall be left in a neat and orderly manner as determined by the COR with the public protected from construction related hazards.

1.6 GOVERNMENT FACILITIES

A. Sanitary facilities are available at the site.

B. Commercial electric power is available at the site.

C. Potable water is available at the site.

1.7 ABBREVIATIONS AND TERMS

1. The following abbreviations and terms may be used in the contract documents:

a. COR (Contracting Officer’s Representative)

b. CO (Contracting Officer)

c. Owner: Government/Forest Service

d. USDA (United States Department of Agriculture)

1.8 CONTRACT TIME

A. 30 Calendar Days

1.9 INSPECTION AND ACCEPTANCE

A. Inspection shall be made by the COR, or his/her inspector. Inspections shall be made as often as necessary to ensure the work is being performed in a neat, workmanlike manner. A final inspection shall be made upon completed of the job. Final acceptance shall be based upon compliance with the contract specifications.

B. If the Contractor should find damaged roof sheathing or fascia, the Contractor shall immediately notify the Contracting Officer and COR and shall provide optional bid item quantity of the damaged items.

1.10 MEASUREMENT AND PAYMENT

A. Measurement and payment for the contract work will be made only for and under those pay items included in the Schedule of Items. Measurement and payment for work or materials required to complete the project and which are not included as pay items on the Schedule of Items will be considered as incidental to, and included, in the payment for other pay items shown and separate measurement and payment therefor will not be made.

B. Payment will be made as follows:

C. Pay Items Supplies/Services Quantity Unit

BBI-1 Mobilization 1 LS

BBI-2 Demolition: Removal & Disposal of Existing Roofing System

1 LS

BB-3 Provide and Install New Asphalt

Shingle Roofing System

1 LS

OBI-1

Rotted/Damaged Decking

Replacement TBD SF

1.11 SUBMITTAL PROCEDURE

A. Contractor is responsible to submit all items in a timely manner so as not to cause a delay in the work. Submittal approvals must be obtained prior to starting work which involves the submittal item. Contractor shall allow ten days for processing of submittals by the Forest Service.

1. No extension of the Contract Time will be authorized because of failure to transmit submittals enough in advance of the Work to permit processing.

2. Forest Service will not accept submittals from sources other than Contractor.

3. Identify deviations from the Contract Documents.

B. Place a permanent label or title block on each submittal for identification. Include the following information on the label:

1. Project name.

2. Date.

3. Name and address of Contractor.

4. Name and address of subcontractor or supplier.

5. Number and title of appropriate Specification Section.

C. Submittal literature must be MARKED or otherwise designated to show the exact model, size, etc. the Contractor proposes to use. Information must be adequate to determine compliance with the specifications.

D. Forest Service will review each submittal, mark as appropriate to indicate approval or resubmit, and return copies less those retained. Compliance with specified requirements remains

Contractor's responsibility.

E. Submittals are required per the following sections:

1. Sheathing (if needed)

a. Product Data

2. Shingles

a. Product Data

b. Color Samples

3. Underlayment

a. Product Data

4. Ridge Vent

a. Product Data

5. Fasteners

a. Product Data

6. Sheet Metal Flashing and Trim, Drip Edge

a. Product Data

b. Color Samples

1.12 NOTICE TO PROCEED

A. Performance of the contract shall begin within ten (10) calendar days after receipt of the Notice to Proceed. The Notice to Proceed will be issued by the Contracting Officer (CO) at the pre-work conference.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION (Not Used)

END OF SECTION 011000

SECTION 016000 - PRODUCT REQUIREMENTS

1.1 SECTION REQUIREMENTS

A. The term "product" includes the terms "material," "equipment," "system," and terms of similar intent.

B. Comparable Product Requests: Submit request for consideration of each comparable product. Identify product or fabrication or installation method to be replaced.

1. Show compliance with requirements for comparable product requests.

2. COR will review the proposed product and notify Contractor of its acceptance or rejection.

C. Basis-of-Design Product Specification Submittal: Show compliance with requirements.

D. Deliver, store, and handle products using means and methods that will prevent damage, deterioration, and loss, including theft. Comply with manufacturer's written instructions.

1. Schedule delivery to minimize long-term storage at Project site and to prevent overcrowding of construction spaces.

2. Deliver products to Project site in manufacturer's original sealed container or packaging, complete with labels and instructions for handling, storing, unpacking, protecting, and installing.

3. Inspect products on delivery to ensure compliance with the Contract Documents and to ensure that products are undamaged and properly protected.

4. Store materials in a manner that will not endanger Project structure.

5. Store products that are subject to damage by the elements, under cover in a weathertight enclosure above ground, with ventilation adequate to prevent condensation.

E. Warranties specified in other Sections shall be in addition to, and run concurrent with, other warranties required by the Contract Documents. Manufacturer's disclaimers and limitations on product warranties do not relieve Contractor of obligations under requirements of the Contract Documents.

PART 2 - PRODUCTS

2.1 PRODUCT SELECTION PROCEDURES

A. Provide products that comply with the Contract Documents, are undamaged, and, unless otherwise indicated, are new at the time of installation.

1. Provide products complete with accessories, trim, finish, and other devices and components needed for a complete installation and the intended use and effect.

2. Descriptive, performance, and reference standard requirements in the

Specifications establish salient characteristics of products.

B. Where Specifications include the phrase "as selected by COR from manufacturer's full range" or similar phrase, select a product that complies with requirements. COR will select color, gloss, pattern, density, or texture from manufacturer's product line that includes both standard and premium items.

2.2 COMPARABLE PRODUCTS

C. COR will consider Contractor's request for comparable product when the following conditions are satisfied:

1. Evidence that the proposed product does not require revisions to the Contract

Documents, that it is consistent with the Contract Documents and will produce the indicated results, and that it is compatible with other portions of the Work.

2. Detailed comparison of significant qualities of proposed product with those named in the Specifications.

3. List of similar installations for completed projects, if requested.

4. Samples, if requested.

PART 3 - EXECUTION (Not Used)

END OF SECTION 016000

SECTION 024119 - SELECTIVE DEMOLITION

1.1 SECTION REQUIREMENTS

A. Items indicated to be removed and salvaged remain Owner's property. Carefully detach from existing construction, in a manner to prevent damage, and deliver to Owner ready for reuse.

Include fasteners or brackets needed for reattachment elsewhere.

B. Pre-demolition Photographs: Show existing conditions of adjoining construction and site improvements. Submit before Work begins.

C. Forest Service Employees will occupy portions of building immediately adjacent to selective demolition area. Conduct selective demolition so Forest Service Employee’s operations will not be disrupted.

D. It is not expected that hazardous materials will be encountered in the Work. If hazardous materials are encountered, do not disturb; immediately notify COR, Forest Service will be responsible for determining presence. Hazardous materials will be removed by Forest Service under a separate contract.

PART 2 - PRODUCTS

2.1 PEFORMANCE REQUIREMENTS

A. Regulatory Requirements: Comply with EPA regulations and with hauling and disposal regulations of authorities having jurisdiction.

B. Standards: Comply with ANSI/ASSE A10.6 and NFPA 241.

PART 3 - EXECUTION

3.1 DEMOLITION

A. Remove existing roofing systems including, but not limited to; asphalt shingles, underlayment, flashings, and drip edge.

B. Maintain services/systems indicated to remain and protect them against damage during selective demolition operations. Before proceeding with demolition, provide temporary services/systems that bypass area of selective demolition and that maintain continuity of services/systems to other parts of the building.

C. Locate, identify, shut off, disconnect, and seal or cap off indicated utility services and mechanical/electrical systems serving areas to be selectively demolished.

D. Provide temporary barricades and other protection required to prevent injury to people and damage to adjacent buildings and facilities to remain.

E. Protect walls, ceilings, floors, and other existing finish work that is to remain. Erect and maintain dustproof partitions. Cover and protect furniture, furnishings, and equipment that have not been removed.

F. Provide and maintain shoring, bracing, and structural supports as required to preserve stability and prevent movement, settlement, or collapse of construction and finishes to remain, and to prevent unexpected or uncontrolled movement or collapse of construction being demolished.

G. Provide temporary weather protection to prevent water leakage and damage to structure and interior areas.

H. Requirements for Building Reuse:

1. 1. Maintain existing building structure (including structural floor and roof decking) and envelope (exterior skin and framing, excluding window assemblies and nonstructural roofing material) not indicated to be demolished; do not demolish such existing construction beyond indicated limits.

I. Neatly cut openings and holes plumb, square, and true to dimensions required. Use cutting methods least likely to damage construction to remain or adjoining construction.

J. Remove demolition waste materials from Project site and legally dispose of them in an EPA-approved landfill. Do not burn demolished materials.

K. Clean adjacent structures and improvements of dust, dirt, and debris caused by selective demolition operations. Return adjacent areas to condition existing before selective demolition operations began.

END OF SECTION 024119

SECTION 061600 - SHEATHING

1.1 SECTION REQUIREMENTS

A. Submittals: product data.

PART 2 – PRODUCTS

2.1 ROOF SHEATHING

A. Roof Sheathing: 15/32” APA Rated 32/16, Structural-1 Plywood. Exposure 1 sheathing or the roofing manufacturer’s required plywood roof sheathing thickness and type.

1. Sheathing shall match existing in kind and thickness.

2.2 MISCELLANEOUS PRODUCTS

A. Fasteners: Size and type indicated.

1. For roof sheathing, provide fasteners with hot-dip zinc coating complying with

ASTM A 153/A 153M or Type 304 stainless steel.

2. Fasteners: 8D Common Nails at 6” on-center along all panel edges, blocking and diaphragm edges. Sheathing shall be attached at 12” on-center at all intermediate supports using 8D Common Nails. Panel Clips shall be provided at all unblocked edges.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Securely attach to substrates, complying with the following:

1. CABO NER-272 for power-driven fasteners.

2. Table 2304.9.1, "Fastening Schedule," in the IBC and Table R602.3(1), "Fastener

Schedule for Structural Members."

B. Fastening Methods:

1. Roof Sheathing:

a. Nail to wood framing.

b. Screw to cold-formed metal framing.

END OF SECTION 061600

SECTION 073113 - ASPHALT SHINGLES

1.1 SECTION REQUIREMENTS

A. Submittals: Product Data and Samples.

B. Identify each bundle of shingles with appropriate makings of UL or another testing and inspecting agency acceptable to authorities having jurisdiction.

1. Exterior Fire-Test Exposure: ASTM E 108 or UL 790, Class A.

2. Wind-Resistance-Test Characteristics: ASTM D 3161 or UL 997, passed.

C. Warranties:

1. Manufacturer's standard written warranty, signed and registered by manufacturer agreeing to promptly repair or replace asphalt shingles that fail in materials for a period of 30 years, prorated, with first 10 years non-prorated. Or better.

2. Contractor shall register manufacturer’s warranty and provide certificate.

3. Workmanship Warranty Period: Two years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Exterior Fire-Test Exposure: ASTM E 108 or UL 790, Class A. Identify products with appropriate markings of testing and inspecting agency acceptable to authorities having jurisdiction.

2.2 ASPHALT SHINGLES

A. Fiberglass Shingles: ASTM D 3462 and as follows:

1. Laminated Architectural Fiberglass Shingles: Laminated, multi-ply overlay construction, mineral-granule surfaced, and self-sealing.

2. Hip & Ridge shingles shall be from the same manufacturer and shall match roof shingles.

B. Products:

1. CertainTeed Presidential TL series, 480 lb/sq. Color to be approved by the COR.

2.3 ACCESSORIES

A. Synthetic Underlayment: CertainTeed Diamond Deck Or approved equal or better. ASTM D226, D4869 or D6757, UV-resistant polypropylene, polyolefin, or polyethylene polymer fabric with surface coatings or treatments to improve traction underfoot and abrasion resistance; evaluated and documented to be suitable for use as a roof underlayment under applicable codes by a testing and inspecting agency acceptable to authorities having jurisdiction.

B. Waterproofing Underlayment: CertainTeed “WinterGuard or approved equal.”; ASTM D 1970 sheet barrier of self-adhering rubberized asphalt membrane shingle underlayment having internal reinforcement, and “split” back plastic release film; Use in “low slope’ areas (below 4:12, but no less that 2:12 pitch); provide material warranty with equal in duration to that of shingles being applied.

C. Self-Adhering Sheet Underlayment: ASTM D 1970/D 1970M, SBS-modified asphalt; mineral-granule or slip-resisting-polyethylene surfaced; with release paper backing; cold applied.

D. Starter Shingles: CertainTeed Presidential Starter Shingles as recommended by the manufacturer to match new roof shingles.

E. Hip & Ridge Cap Shingles: CertainTeed Mountain Ridge or Cedar Crest Accessory Shingles as recommended by manufacturer to match new roof shingles or approved equal.

F. Ridge Vent: Rigid UV-stabilized plastic ridge vent with external deflector baffles; for use under ridge shingles.

1. Manufacturers: Subject to compliance with requirements, provide products by the following:

a. Lomanco, Inc. or approved equal.

G. Asphalt Roofing Cement: ASTM D 4586/D 4586M, Type II, asbestos free.

H. Roofing Nails: Aluminum, stainless-steel, or hot-dip galvanized-steel shingle nails, minimum

0.120-inch diameter of sufficient length to penetrate 3/4 inch into solid wood decking or extend at least 1/8 inch through OSB or plywood sheathing. NO STAPLES

1. Where nails are in contact with metal flashing, use nails made from same metal as flashing.

I. Underlayment Nails: Aluminum, stainless-steel, or hot-dip galvanized-steel wire with low-profile capped heads or disc caps, 1-inch minimum diameter. 1” min length.

J. Sheet Metal Flashing and Trim:

K. All flashing and drip edge shall be new and shall be at least as wide as flashing/drip edge removed.

Flashing and Drip Edge color shall match existing, and paint shall be factory applied (when applicable).

1. Sheet Flashing: ASTM A 361/A361M; 26 Gauge (0.45 mm) steel with minimum

G115/Z350 galvanized coating.

2. Drip Edge: Formed sheet metal with at least a 2-inch roof deck flange and a 1-1/2-inch fascia flange with a 3/8-inch drip at lower edge. Color to match existing.

3. Fabricate sheet metal flashing and trim to comply with recommendations in SMACNA’s

“Architectural Sheet Metal Manual.”

PART 3 - EXECUTION

3.1 INSTALLATION

A. Comply with manufacturer’s recommended installation procedures and recommendations in

ARMA's "Residential Asphalt Roofing Manual" and with asphalt shingle recommendations in

NRCA's "The NRCA Roofing and Waterproofing Manual."

B. Apply self-adhering sheet underlayment at eaves and rakes from edges of roof to at least 24 inches inside exterior wall line.

C. Apply self-adhering sheet underlayment at valleys extending 18 inches on each side.

D. Install felt underlayment on roof deck not covered by self-adhering sheet underlayment.

E. Install synthetic underlayment’s on roof deck parallel with and starting at the eaves.

1. Lap sides and ends as recommended in writing by manufacturer, but not less than 4 inches for side laps and 6 inches for end laps.

2. Install in single layer on roofs sloped at 4:12 and greater.

3. Install in double layer on roofs sloped at less than 4:12.

F. Install all underlayment per manufacturer’s instructions.

G. Install valleys complying with ARMA and NRCA instructions. Construct closed-cut and sheet metal open valleys.

H. Install metal flashings and other sheet metal to comply with requirements in Division 7 Section

“Sheet Metal Flashing and Trim,” recommendation in ARAMA’s “Residential Asphalt Roofing

Manual” and asphalt shingle recommendations in NRCA’s “The NRCA Roofing and

Waterproofing Manual.”

I. Install first and remaining courses of asphalt shingles, stair-stepping diagonally across roof deck with manufacturer's recommended offset pattern at succeeding courses and maintaining uniform exposure.

END OF SECTION 073113

SECTION 076200 -SHEET METAL FLASHING AND TRIM

PART 1 – GENERAL

1.1 SUMMARY

A. Section Includes:

1. Manufactured Products:

a. Manufactured through-wall flashing and counterflashing.

2. Formed Products:

a. Formed wall sheet metal fabrications.

B. Application:

1. Project is for removal and replacement of Siding. Existing Water Drainage Gutters and Downspouts are to be re-installed under this contract pending award of related contract for Roof and Gutter Replacement on same buildings as this Work.

2. It is expected that Selective Demolition of this project can be accomplished without damage to flashing and trim. This Section 076200 applies to materials that shall be replaced by Contractor or that are necessary to make complete watertight siding replacement project.

3. Materials damaged by Contractor shall be restored with like materials as approved by Contracting Officer.

1.2 PERFORMANCE REQUIREMENTS

A. General: Sheet metal flashing and trim assemblies as indicated shall withstand wind loads, structural movement, thermally induced movement, and exposure to weather without failure due to defective manufacture, fabrication, installation, or other defects in construction. Completed sheet metal flashing and trim shall not rattle, leak, or loosen, and shall remain watertight.

B. Fabricate and install copings capable of resisting forces indicated.

C. Thermal Movements: Provide sheet metal flashing and trim that allows for thermal movements from ambient and surface temperature changes.

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

1.3 SUBMITTALS

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

B. Shop Drawings: Show fabrication and installation layouts of sheet metal flashing and trim, including plans, elevations, expansion-joint locations, and keyed details.

Distinguish between shop- and field-assembled work. Include the following:

1. Identification of material, thickness, weight, and finish for each item and location in Project.

2. Details for forming sheet metal flashing and trim, including profiles, shapes, seams, and dimensions.

3. Details for joining, supporting, and securing sheet metal flashing and trim, including layout of fasteners, cleats, clips, and other attachments. Include pattern of seams.

4. Details of termination points and assemblies, including fixed points.

5. Details of expansion joints and expansion-joint covers, including showing direction of expansion and contraction.

6. Details of edge conditions, including eaves, ridges, valleys, rakes, crickets, and counter flashings as applicable.

7. Details of special conditions.

8. Details of connections to adjoining work.

C. Samples for Verification: For each type of exposed finish required, prepared on Samples of size indicated below:

1. Sheet Metal Flashing: 12 inches long by actual width of unit, including finished seam and in required profile. Include fasteners, cleats, clips, closures, and other attachments.

2. Trim, Metal Closures, Expansion Joints, Joint Intersections, and Miscellaneous

Fabrications: 12 inches long and in required profile. Include fasteners and other exposed accessories.

3. Accessories and Miscellaneous Materials: Full-size Sample.

1.4 QUALITY ASSURANCE

A. Fabricator Qualifications: Shop that employs skilled workers who custom fabricate sheet metal flashing and trim similar to that required for this Project and whose products have a record of successful in-service performance.

B. Sheet Metal Flashing and Trim Standard: Comply with SMACNA's "Architectural Sheet

Metal Manual" unless more stringent requirements are specified or shown on Drawings.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Do not store sheet metal flashing and trim materials in contact with other materials that might cause staining, denting, or other surface damage. Store sheet metal flashing and trim materials away from uncured concrete and masonry.

B. Protect strippable protective covering on sheet metal flashing and trim from exposure to sunlight and high humidity, except to the extent necessary for the period of sheet metal flashing and trim installation.

PART 2 – PRODUCTS

2.1 SHEET METALS

A. General: Protect mechanical and other finishes on exposed surfaces from damage by applying a strippable, temporary protective film before shipping.

B. Stainless-Steel Sheet: ASTM A 240/A 240M, Type 304, dead soft, fully annealed; 2D

(dull, cold rolled) finish.

C. Metallic-Coated Steel Sheet: Restricted flatness steel sheet, metallic coated by the hot-dip process and pre-painted by the coil-coating process to comply with ASTM

A 755/A 755M. for drip edge.

1. Zinc-Coated (Galvanized) Steel Sheet: ASTM A 653/A 653M, G90 coating designation; structural quality

2. Surface: Smooth, flat.

3. Exposed Coil-Coated Finish:

a. Two-Coat Fluoropolymer: AAMA 621. Fluoropolymer finish containing not less than 70 percent PVDF resin by weight in both color coat and clear topcoat. Prepare, pretreat, and apply coating to exposed metal surfaces to comply with coating and resin manufacturers' written instructions.

4. Color: As indicated by manufacturer's designations or as selected by Contracting

Officer Representative from manufacturer's full range.

5. Concealed Finish: Pretreat with manufacturer's standard white or light-colored acrylic or polyester backer finish, consisting of prime coat and wash coat with a minimum total dry film thickness of 0.5 mil.

D. Sheet Metal: 24 Gauge aluminum with. Mill finish. For edpm roofing

2.2 MISCELLANEOUS MATERIALS

A. General: Provide materials and types of fasteners, solder, welding rods, protective coatings, separators, sealants, and other miscellaneous items as required for complete sheet metal flashing and trim installation and recommended by manufacturer of primary sheet metal or manufactured item unless otherwise indicated.

B. Fasteners: Wood screws, annular threaded nails, self-tapping screws, self-locking rivets and bolts, and other suitable fasteners designed to withstand design loads and recommended by manufacturer of primary sheet metal or manufactured item.

1. General: Blind fasteners or self-drilling screws, gasketed, with hex-washer head.

a. Exposed Fasteners: Heads matching color of sheet metal using plastic caps or factory-applied coating.

b. Blind Fasteners: High-strength aluminum or stainless-steel rivets suitable for metal being fastened.

c. Spikes and Ferrules: Same material as gutter; with spike with ferrule matching internal gutter width.

2. Fasteners for Zinc-Coated (Galvanized) Steel Sheet: Hot-dip galvanized steel according to ASTM A 153/A 153M or ASTM F 2329 or Series 300 stainless steel.

C. Sealant Tape: Pressure-sensitive, 100 percent solids, gray polyisobutylene compound sealant tape with release-paper backing. Provide permanently elastic, non-sag, nontoxic, non-staining tape 1/2 inch wide and 1/8 inch thick.

D. Butyl Sealant: ASTM C 1311, single-component, solvent-release butyl rubber sealant;

polyisobutylene plasticized; heavy bodied for hooked-type expansion joints with limited movement.

E. Bituminous Coating: Cold-applied asphalt emulsion complying with ASTM D 1187.

F. Asphalt Roofing Cement: ASTM D 4586, asbestos free, of consistency required for application.

2.3 FABRICATION, GENERAL

A. General: Custom fabricate sheet metal flashing and trim to comply with recommendations in SMACNA's "Architectural Sheet Metal Manual" that apply to design, dimensions, geometry, metal thickness, and other characteristics of item indicated. Fabricate items at the shop to greatest extent possible.

1. Fabricate sheet metal flashing and trim in thickness or weight needed to comply with performance requirements, but not less than that specified for each application and metal.

2. Obtain field measurements for accurate fit before shop fabrication.

3. Form sheet metal flashing and trim without excessive oil canning, buckling, and tool marks and true to line and levels indicated, with exposed edges folded back to form hems.

4. Conceal fasteners and expansion provisions where possible. Exposed fasteners are not allowed on faces exposed to view.

B. Fabrication Tolerances: Fabricate sheet metal flashing and trim that is capable of installation to a tolerance of 1/4 inch in 20 feet on slope and location lines as indicated and within 1/8-inch offset of adjoining faces and of alignment of matching profiles.

C. Sealed Joints: Form non-expansion but movable joints in metal to accommodate elastomeric sealant.

D. Expansion Provisions: Where lapped expansion provisions cannot be used, form expansion joints of intermeshing hooked flanges, not less than 1 inch deep, filled with butyl sealant concealed within joints.

E. Fabricate cleats and attachment devices from same material as accessory being anchored or from compatible, noncorrosive metal.

F. Fabricate cleats and attachment devices of sizes as recommended by SMACNA's

"Architect’s Sheet Metal Manual" and by FMG Loss Prevention Data Sheet 1-49 for application, but not less than thickness of metal being secured.

G. Seams: Fabricate nonmoving seams with flat-lock seams. Tin edges to be seamed, form seams, and solder.

H. Do not use graphite pencils to mark metal surfaces.

PART 3 – EXECUTION

3.1 EXAMINATION

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

1. Verify compliance with requirements for installation tolerances of substrates.

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

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 INSTALLATION, GENERAL

A. General: Anchor sheet metal flashing and trim and other components of the Work securely in place, with provisions for thermal and structural movement. Use fasteners, solder, welding rods, protective coatings, separators, sealants, and other miscellaneous items as required to complete sheet metal flashing and trim system.

1. Install sheet metal flashing and trim true to line and levels indicated. Provide uniform, neat seams with minimum exposure of solder, welds, and sealant.

2. Install sheet metal flashing and trim to fit substrates and to result in watertight performance. Verify shapes and dimensions of surfaces to be covered before fabricating sheet metal.

3. Space cleats not more than 12 inches apart. Anchor each cleat with two fasteners.

Bend tabs over fasteners.

4. Install exposed sheet metal flashing and trim without excessive oil canning, buckling, and tool marks.

5. Install sealant tape where indicated.

6. Torch cutting of sheet metal flashing and trim is not permitted.

7. Do not use graphite pencils to mark metal surfaces.

B. Metal Protection: Where dissimilar metals will contact each other or corrosive substrates, protect against galvanic action by painting contact surfaces with bituminous coating or by other permanent separation as recommended by SMACNA.

C. Expansion Provisions: Provide for thermal expansion of exposed flashing and trim. Space movement joints at a maximum of 10 feet with no joints allowed within 24 inches of corner or intersection. Where lapped expansion provisions cannot be used or would not be sufficiently watertight, form expansion joints of intermeshing hooked flanges, not less than 1 inch deep, filled with sealant concealed within joints.

D. Fastener Sizes: Use fasteners of sizes that will penetrate wood sheathing not less than 1-

1/4 inches for nails and not less than 3/4 inch for wood screws.

E. Seal joints as shown and as required for watertight construction.

1. Where sealant-filled joints are used, embed hooked flanges of joint members not less than 1 inch into sealant. Form joints to completely conceal sealant. When ambient temperature at time of installation is moderate, between 40 and 70 deg F, set joint members for 50 percent movement each way. Adjust setting proportionately for installation at higher ambient temperatures. Do not install sealant-type joints at temperatures below 40 deg F.

2. Prepare joints and apply sealants to comply with requirements in Division 07

Section "Joint Sealants."

3.3 ROOF FLASHING INSTALLATION

A. General: Install sheet metal flashing and trim to comply with performance requirements, sheet metal manufacturer's written installation instructions, and SMACNA's

"Architectural Sheet Metal Manual." Provide concealed fasteners where possible, set units true to line, and level as indicated. Install work with laps, joints, and seams that will be permanently watertight and weather resistant.

B. Roof Edge Flashing: Anchor to resist uplift and outward forces according to recommendations in FMG Loss Prevention Data Sheet 1-49 for specified wind zone and as indicated. Interlock bottom edge of roof edge flashing with continuous cleat anchored to substrate at 24-inch centers.

3.4 CLEANING AND PROTECTION

A. Clean exposed metal surfaces of substances that interfere with uniform oxidation and weathering.

B. Clean and neutralize flux materials. Clean off excess solder.

C. Clean off excess sealants.

D. Remove temporary protective coverings and strippable films as sheet metal flashing and trim are installed unless otherwise indicated in manufacturer's written installation instructions. On completion of installation, remove unused materials and clean finished surfaces. Maintain in a clean condition during construction.

E. Replace sheet metal flashing and trim that have been damaged or that have deteriorated beyond successful repair by finish touchup or similar minor repair procedures.

END OF SECTION 076200

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