J.2 SOW La Jara Ranger Dwelling Roof Specs New.pdf

LA JARA DWELLING ROOF REPLACEMENT 1

RIO GRANDE NATIONAL FOREST SPECIFICATIONS

La Jara Dwelling

ROOF REPLACEMENT

SECTION 001500

LIST OF DRAWINGS AND SPECIFICATIONS

PART 1-GENERAL

1.1 DESCRIPTION

A. List of Contract Specifications:

1. Index of Specifications

DIVISION 1 - GENERAL

REQUIREMENTS

Section 00150 List of Drawings and Specifications

Section 010150 General Requirements

DIVISION 2 – SITEWORK N/A

DIVISION 3 - CONCRETE N/A

DIVISION 4 – MASONRY N/A

DIVISION 5 – METALS N/A

DIVISION 6 – WOOD AND

PLASTICS

N/A

DIVISION 7 – THERMAL AND

MOISTURE PROTECTION

Section 074113 Metal Roof Panels

Section 076200 Sheet Metal Flashing and Trim

Section 077200 Roofing Accessories

B. Photographs of Existing Conditions

LA JARA DWELLING ROOF REPLACEMENT 2

SECTION 010150

GENERAL REQUIREMENTS

PART 1 – SUMMARY OF WORK

1.1 DESCRIPTION

A. Work for this project requires the contractor to be responsible for supplying all labor, equipment, utilities, miscellaneous items, freight and delivery and all necessary valid licenses to install approximately 2000 square feet of metal panel roofing supplied by the

Government on the La Jara Ranger Dwelling Building. Contractor shall verify square footage before work is started. Work under this contract shall include:

1. Demolish and remove the existing roofing, underlayment, gutters, downspouts and flashing.

2. Replace any deteriorated roof decking with similar new material.

3. Install 36” wide self-adhered rubber membrane on entire roof deck. Install prior to roofing felt.

4. Install 2 layers of 15# felt over entire roof area.

5. Install metal roofing panels and fasteners.

6. Install ridge vent along entirety of ridges.

7. Install new drip edges, edge flashings and sewer vent boots.

8. Install new pre-finished seamless gutters where previous gutters are located.

9. Install new downspouts at locations of existing. Install 45 degree elbows at all splashblocks.

10. Install new flashing around roof penetrations and chimneys and reset existing mechanical devices.

1.2 LOCATION

A. This project is located at the La Jara Ranger Dwelling Site located 1.5 miles from La Jara in Conejos County. The address is 18351 US HWY 285, La Jara, CO 81140.

1.3 GENERAL SITE CONDITIONS AND WEATHER

A. The elevation of the site is approximately 7,600 feet above mean sea level. Summers are generally warm and winters are generally frigid. Rainfall is distributed mostly during the wet season during July - September of the year.

1.4 PROJECT SCHEDULING

A. Work hours for this project are between 7:00 AM-4:30 PM Monday through Friday.

B. A pre-work meeting will be held at the site for clarification of the project.

1.5 POINT OF CONTACT

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Site Point of Contact: Will be provided by Contracting Officer

1.6 USE OF PREMISES

A. General: Contractor shall have limited use of premises for construction operations. Site is occupied by government employees intermittently throughout the spring and summer seasons.

B. Use of Site: Limit use of premises to work in areas indicated. Do not disturb portions of

Project site beyond areas in which the Work is indicated.

1. Limits: Confine constructions operations to immediate area of work.

2. Government Occupancy: Allow for Government occupancy of Project site.

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

a. Schedule deliveries to minimize use of driveways and entrances.

b. Schedule deliveries to minimize space and time requirements for storage of materials and equipment on-site.

C. Use of Existing Building: Maintain existing building in a weather tight condition throughout construction period. Repair damage caused by construction operations.

Protect building and its occupants during construction period.

1.7 GOVERNMENT'S OCCUPANCY REQUIREMENTS

A. Full Government Occupancy: Government will occupy the site and the buildings during entire construction period. Cooperate with Government during construction operations to minimize conflicts and facilitate Government usage. Perform the Work so as not to interfere with Government's day-to-day operations. Maintain existing exits, unless otherwise indicated.

1. Maintain access to existing walkways, corridors, and other adjacent occupied or used facilities. Do not close or obstruct walkways, corridors, or other occupied or used facilities without written permission from Government and authorities having jurisdiction.

1.8 WORK RESTRICTIONS

A. Nonsmoking Building: Smoking is not permitted within any of the buildings or within

25 feet (8 m) of entrances, operable windows, or outdoor air intakes.

1.9 CONTRACTOR’S RESPONSIBILITIES

A. The Contractor shall be fully responsible for seeing that construction activities conform to the specifications and provisions of this contract. The Government will provide timely reviews as requested by the Contractor and may periodically review work at any time.

B. Confine storage of materials to areas as approved by the CO.

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C. Contractor shall provide adequate signing and barricades and take necessary safety measures to protect the public and possible occupants during all construction operations.

Contractor shall minimize disturbance of all undisturbed areas.

D. Preservation of Natural Features: Confines all operations to work limits of the project.

Prevent damage to natural surroundings. Restore damaged areas, repairing or replacing damaged trees and plants, at no additional expense to the Government.

1. Provide temporary barriers to protect existing trees and plants and root zones.

2. Do not remove, injure, or destroy trees or other plants without prior approval.

Consult with CO and remove agreed-on roots and branches that interfere with construction.

3. Do not fasten ropes, cables, or guys to existing trees.

4. Carefully supervise excavating, grading, filling, and other construction operations near trees to prevent damage.

E. Existing Utilities: Notify CO in the event of any planned or accidental interruptions.

1. Contractor shall be responsible for locating and preventing damage to known utilities. If damage occurs, repair utility at no additional expense to the

Government.

2. Interruption of Existing Utility Service: Notify CO, 48 hours in advance of any interruption of existing utilities.

1.10 MEALS AND LODGING

A. Meals and lodging are commercially available in the town of Alamosa, CO.

1.11 FIELD VERIFICATION

A. Field verify all new and existing dimensions affecting the work of this contract before ordering products.

1.12 PERMITS

A. Special permits for electrical work or any other permits required by County, State, or

Federal laws or regulations shall be obtained by the Contractor.

1.13 SCHEDULE OF ITEMS

Schedule of Items: The project Schedule of Items includes several sections to organize the work into Base Items and Optional Items.

1. Provide pricing for all items listed in the Schedule of Items.

2. Contract award will be made for all Base Items.

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B. Base Items (BI):

1. Base Item No. 1- Demolition

a. Measurement: This item is measured as a Lump Sum quantity.

b. Payment: The contract lump sum price as shown in the Schedule of Items includes all materials, equipment, labor and incidentals to the removal and disposal of current asphalt shingles, gutters, downspouts, flashing, underlayment, and materials incidental to the removal of current roof.

2. Base Item No. 2- Metal Roof Installation

a. Payment: The contract lump sum price as shown in the Schedule of Items includes all, equipment, labor and incidentals to the installation of metal roofing panels, underlayment, flashing, gutters, downspouts, and other materials incidental to the installation of new metal roof.

3. Base Item No. 3 – Mobilization and Incidentals

a. Payment: The contract lump sum price as shown in the Schedule of Items includes all materials, equipment, labor and incidentals to the mobilization to the job site and any materials and/or labor required to do so.

C. Increase/Decrease Quantity Items:

1. Increase/Decrease Quantity Item No.1- Roof Sheathing Replacement

a. Measurement: This item is measured as a square foot quantity.

b. Payment: The contract unit price as shown in the Schedule of Items shall include all materials, equipment, labor and incidentals to remove and replace water damaged roof sheathing with 5/8-inch CDX plywood sheathing.

PART 2 – SUBMITTAL PROCEDURES

2.1 DEFINITIONS

A. Action Submittals: Written and graphic information that requires Government approval.

B. Informational Submittals: Written information that does not require Government approval. Submittals may be rejected for not complying with requirements.

2.2 PROCEDURES

A. Contractor Responsibilities

1. Review each submittal and check for compliance with the Contract Documents.

2. Highlight, encircle, or otherwise identify deviations from the Contract Documents on submittals.

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3. Include the following information on label or cover sheet for processing and recording action taken:

a. Project name.

b. Date.

c. Name and address of Contractor.

d. Name of manufacturer.

e. Unique identifier, including revision number.

f. Number and title of appropriate Specification Section.

g. Drawing number and detail references, as appropriate.

h. Date of Contractor’s approval.

i. Statement certifying that submittal has been reviewed, checked, and approved by the Contractor for compliance with the Contract Documents.

4. The Government will not review submittals that do not bear Contractor's approval and will return them without action.

5. Unless additional copies are required for final submittal, and unless the Contracting

Officer (CO) observes noncompliance with provisions of the Contract Documents, initial submittal may serve as final submittal.

6. Only final submittals with mark indicating action taken by Government are to be used for construction.

7. Submittals not required by the Contract Documents will not be reviewed and may be discarded.

B. Processing Time: Time for review shall commence on CO's receipt of submittal.

1. Initial Review: Government will review initial submittal within 10 working days.

Additional time may be needed if processing must be delayed to permit coordination with subsequent submittals. CO will advise Contractor when a submittal being processed must be delayed for coordination.

2. Resubmittals: If resubmittal is necessary, it will be processed in same timeframe as initial submittal.

2.3 ACTION SUBMITTALS

A. Prepare and submit Action Submittals required in the Technical Specifications in this contract, if applicable, and as indicated at the end of this subsection.

1. Submit two copies of each submittal, unless otherwise indicated. CO will return one copy. Mark up and retain one returned copy as a Project Record Document.

Electronic submission of PDFs is an acceptable alternative to paper submission.

B. Collect information into a single submittal for each element of construction and type of product or equipment.

1. Mark each copy of each submittal to show which products and options are applicable.

2. Include the following information, as applicable:

a. Manufacturer's written recommendations.

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b. Manufacturer's product specifications.

c. Manufacturer's installation instructions.

d. Manufacturer's catalog cuts.

e. Wiring diagrams showing factory-installed wiring.

f. Compliance with recognized trade association standards.

g. Compliance with recognized testing agency standards.

C. Required Action Submittals

A. Manufacturer's Literature: Submit a copy of the manufacturer's descriptive data for the metal roofing to be used on this project.

B. Shop Drawings: Submit a copy of shop drawings for the sheet metal roofing to be used on this project.

C. Warranty: Contractor shall submit a standard manufacturer’s warranty upon completion of project.

2.4 INFORMATIONAL SUBMITTALS

A. Prepare and submit Informational Submittals required in the Technical Specifications in this contract, if applicable, and as indicated at the end of this subsection.

1. Submit one copy of each submittal, unless otherwise indicated. CO will not return copy. Electronic submission of PDFs is an acceptable alternative to paper submission.

2. Provide a statement that includes signature of entity responsible for preparing certification.

B. Required Informational Submittals:

1. Accident Prevention Plan.

2. Construction Schedule

3. Sample Manufacturer Warranty

PART 3 – TEMPORARY FACILITIES AND CONTROLS

3.1 USE OF UTILITIES

A. Utilities: Use of Government existing facilities will be permitted without metering and without payment of use charges, as long as facilities are cleaned and maintained in an acceptable condition. At Substantial Completion, restore these facilities to condition existing before initial use. The following are available for use by the contractor: water, and electrical power services. The following are not available: telephone service.

3.2 SANITARY FACILITIES

A. Sanitary facilities are not available for use by the Contractor. Facilities must be cleaned and maintained daily. Contractor is required to provide sanitary facilities.

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B. Coordinate on-site staging and storage requirements with the Site Point of Contact or the

Contracting Officer Representative (COR).

3.3 CONSTRUCTION WASTE DISPOSAL FACILITIES

A. Provide waste-collection containers in sizes adequate to handle waste from construction operations. Containerize and clearly label hazardous, dangerous, or unsanitary waste materials separately from other waste.

B. Cleaning up of small debris such as shingles, small metal screws, and other debris is required once construction is complete.

3.4 SAFETY AND ENVIRONMENTAL PROTECTION

A. Environmental Protection: Contractor shall provide protection, operate temporary facilities, and conduct construction in ways and by methods that comply with environmental regulations and that minimize possible air, waterway, and subsoil contamination or pollution or other undesirable effects.

B. Barricades, Warning Signs, and Lights: Comply with the national or state Manual on

Uniform Traffic Control Devices (MUTCD) for erecting structurally adequate barricades, paint with appropriate colors, graphics, and warning signs/lights to inform personnel and public of possible hazard.

C. Fire Protection.

1. Store combustible materials in containers in fire-safe locations.

2. Maintain unobstructed access to fire extinguishers, fire hydrants, fire-protection facilities, stairways, and other access routes for firefighting. Prohibit smoking in hazardous fire-exposure areas.

3. Supervise welding operations, combustion-type temporary heating units, and similar sources of fire ignition.

PART 4 – EXECUTION REQUIREMENTS

4.1 EXAMINATION

A. Before beginning work, examine areas and document existing conditions. Proceed with installation only after unsatisfactory conditions have been corrected. Proceeding with the

Work indicates acceptance of surfaces and conditions.

B. Field verify all new and existing dimensions affecting the work of this contract before ordering products.

C. Immediately on discovery of the need for clarification of the Contract Documents, submit a request for information to CO. Include a detailed description of problem encountered, together with recommendations for changing the Contract Documents.

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4.2 INSTALLATION

A. Locate the Work and components of the Work accurately, in correct alignment and elevation to fit with existing construction.

B. Make vertical work plumb and make horizontal work level.

C. Install per manufacturer's written instructions and recommendations.

4.3 PROGRESS CLEANING

A. Clean Project site and work areas daily, including common areas. Dispose of materials lawfully.

1. Comply with NFPA 241 requirements for removal of combustible waste materials and debris.

2. Do not hold materials more than 7 days during normal weather or 3 days if the temperature is expected to rise above 80 deg F (27 deg C).

B. Burying or burning waste materials on-site will not be permitted. Washing waste materials down sewers or into waterways will not be permitted.

4.4 PROTECTION OF INSTALLED CONSTRUCTION

A. Provide protection and maintain conditions that ensure installed Work does not get damaged or deteriorated prior to Substantial Completion.

4.5 CORRECTION OF THE WORK

A. Repair or remove and replace defective construction. Restore damaged substrates and finishes.

1. Repairing includes replacing defective parts, refinishing damaged surfaces, touching up with matching materials, and properly adjusting operating equipment.

PART 5 – CLOSEOUT PROCEDURES

5.1 SUBSTANTIAL COMPLETION

A. Definition of Substantial Completion: The Date certified by the CO when construction is sufficiently complete, in accordance with the Contract Documents, so the Government can occupy or utilize the Work or designated portion thereof for the use for which it is intended, as expressed in the Contract Documents.

B. Preliminary Procedures: Before requesting inspection for determining date of Substantial

Completion, complete the following. List items below that are incomplete in request.

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1. Prepare a list of items to be completed and corrected (punch list), the value of items on the list, and reasons why the Work is not complete.

2. Advise the CO of pending insurance changeover requirements.

3. Submit specific warranties, workmanship bonds, final certifications, and similar documents.

4. Obtain and submit releases permitting Government unrestricted use of the Work and access to services and utilities.

5. Deliver tools, spare parts, extra materials, and similar items to location designated by Government. Label with manufacturer's name and model number where applicable.

6. Complete startup testing of systems.

7. Submit changeover information related to Government occupancy, use, operation, and maintenance.

8. Complete final cleaning requirements, including touchup painting.

9. Touch up and otherwise repair and restore marred exposed finishes to eliminate visual defects.

C. Inspection: Submit a written request for inspection for Substantial Completion. On receipt of request, CO will either proceed with inspection or notify Contractor of unfulfilled requirements. CO will prepare the Certificate of Substantial Completion after inspection or will notify Contractor of items, either on Contractor's list or additional items identified by CO, that must be completed or corrected before certificate will be issued.

1. Reinspection: Request reinspection when the Work identified in previous inspections as incomplete is completed or corrected.

2. Results of completed inspection will form the basis of requirements for Final

Completion.

5.2 FINAL COMPLETION

A. Preliminary Procedures: Before requesting final inspection for determining date of Final

Completion, complete the following:

1. Submit certified copy of CO’s Substantial Completion inspection list of items to be completed or corrected (punch list), endorsed and dated by CO. The certified copy of the list shall state that each item has been completed or otherwise resolved for acceptance.

2. Submit evidence of final, continuing insurance coverage complying with insurance requirements.

3. Instruct Government personnel in operation, adjustment, and maintenance of products, equipment, and systems.

B. Inspection: Submit a written request for final inspection for acceptance. On receipt of request, CO will either proceed with inspection or notify Contractor of unfulfilled requirements. CO will prepare a final Certificate for Payment after inspection or will

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notify Contractor of construction that must be completed or corrected before certificate will be issued.

1. Reinspection: Request reinspection when the Work identified in previous inspections as incomplete is completed or corrected.

5.3 LIST OF INCOMPLETE ITEMS (PUNCH LIST)

A. Preparation: Submit two copies of list. Include name and identification of each space and area affected by construction operations for incomplete items and items needing correction including, if necessary, areas disturbed by Contractor that are outside the limits of construction.

5.4 FINAL CLEANING

A. General: Provide final cleaning. Conduct cleaning and waste-removal operations to comply with local laws and ordinances and Federal and local environmental and antipollution regulations.

B. Cleaning Agents: Use cleaning materials and agents recommended by manufacturer or fabricator of the surface to be cleaned. Do not use cleaning agents that are potentially hazardous to health or property or that might damage finished surfaces.

C. Complete the following cleaning operations before requesting inspection for certification of Substantial Completion for entire Project or for a portion of Project:

1. Clean Project site, yard, and grounds, in areas disturbed by construction activities, including landscape development areas, of rubbish, waste material, litter, and other foreign substances.

2. Remove tools, construction equipment, machinery, and surplus material from

Project site.

3. Touch up and otherwise repair and restore marred, exposed finishes and surfaces.

Replace finishes and surfaces that cannot be satisfactorily repaired or restored or that already show evidence of repair or restoration.

D. Remove waste materials from Project site and dispose of lawfully.

END OF SECTION 010150

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SECTION 074113

METAL ROOF PANELS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

1. Factory-formed and field-assembled, concealed-fastener, lap-seam metal roof panels.

2. Metal soffit panels.

1.2 PERFORMANCE REQUIREMENTS

A. Wind-Uplift Resistance: Comply with UL 580 for wind-uplift resistance class indicated.

B. Structural Performance: Capable of withstanding the effects of gravity loads and the following loads and stresses, based on testing according to ASTM E 330:

1. Wind Loads: Minimum design wind speeds of 115/151 MPH with uplift pressures of 30 lbf/sq.ft.

2. Ground Snow Loads: 35 lbf/sq. ft.

C. Seismic Performance: Seismic Design Category C

D. Energy Performance: Provide roof panels that are listed on the U.S. Department of

Energy's ENERGY STAR Roof Products Qualified Product List for steep-slope roof products.

1.3 SUBMITTALS

A. Product Data: For each type of metal roof panel and accessory indicated.

1. Include details of edge conditions, joints, panel profiles, corners, anchorages, trim, flashings, closures, and accessories.

B. Coordination Drawings: Drawn to scale and coordinating metal roof panel installation with penetrations and roof-mounted items.

C. Samples: For each exposed finish.

D. Material certificates.

E. Maintenance data.

F. Sample warranty.

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1.4 CLOSEOUT SUBMITTALS

A. Warranty.

1.5 QUALITY ASSURANCE

A. Installer Qualifications: An employer of workers trained and approved by manufacturer.

1.6 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of metal roof panel assemblies that fail in materials or workmanship within specified warranty period.

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.

2. Warranty Period: Two years from date of Substantial Completion.

B. Special Warranty on Panel Finishes: Manufacturer's standard form in which manufacturer agrees to repair finish or replace metal roof panels that show evidence of deterioration of factory-applied finishes within specified warranty period.

1. Fluoropolymer Finish Warranty Period: 20 years from date of Substantial

Completion.

PART 2 - PRODUCTS

2.1 PANEL MATERIALS

Interlocking Standing Seam Roofing: Uplift Classification of not less than Class No. 30, shall consist of 16-inch-wide non-embossed flush-faced panels of not less than 26 U.S.

gauge acrylic enamel coated steel with 1-1/2 inch to 2-inch-high male and female ribs.

Coated steel tested according to ASTM A 652 to meet or exceed minimum yield point of

48,000 psi.

2.2 UNDERLAYMENT MATERIALS

A. Self-Adhering Sheet Underlayment, Polyethylene Faced: ASTM D 1970, minimum of

40-mil- (1.0- mm-) thick, slip-resisting, polyethylene-film-reinforced top surface laminated to SBS-modified asphalt adhesive, with release paper backing; cold applied.

1. Products:

a. Carlisle Coatings & Waterproofing, Div. Have Carlisle Co. Inc.; Dri-Start

“A”.

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b. Grace, W.R. & Co.; Grace Ice and Water Shield.

c. Henry Company; Perma-Seal PE.

d. Johns Manville International, Inc.; Roof Defender.

e. NEI Advanced Composite technology; AC Poly Ice and StormSeal.

f. Owens Corning; WeatherLock M.

g. Polyguard products, Inc.; Polyguard Deck Guard.

h. Protector Wrap Company; Rainproof TM.

i. SafSeal Innovations; SafSeal 7740.

B. Felts: ASTM D 266, Type I (#15) asphalt-saturated organic felts, non-perforated.

C. Slip Sheet: Building paper, minimum 5 lb/100 sq. ft. (0.24 kg/sq. m), rosin sized.

2.3 MISCELLANEOUS MATERIALS

A. Fasteners: Self-tapping screws, bolts, nuts, self-locking rivets and bolts, end-welded studs, and other suitable fasteners designed to withstand design loads. Provide exposed fasteners with heads matching color of metal roof panels by means of plastic caps or factory-applied coating.

1. Fasteners for Roof Panels: Self-drilling or 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.

2. Fasteners for Roof Panels: Self-drilling or self-tapping 410 stainless or zinc-alloy steel hex washer head, with EPDM or PVC washer under heads of fasteners bearing on weather side of metal roof panels.

3. Fasteners for Flashing and Trim: Blind fasteners or self-drilling screws with hex washer head.

4. Blind Fasteners: High-strength aluminum or stainless-steel rivets.

B. Bituminous Coating: Cold-applied asphalt mastic, SSPC-Paint 12, compounded for 15-mil (0.4-mm) dry film thickness per coat. Provide inert-type noncorrosive compound free of asbestos fibers, sulfur components, and other deleterious impurities.

2.4 METAL ROOF PANELS

A. Concealed-Fastener, Lap-Seam Metal Roof Panels: Factory-formed, designed to be field assembled by lapping and interconnecting side edges of adjacent panels and mechanically attaching through panel to supports using concealed fasteners and factory-applied sealant in-side laps. Include accessories required for weathertight installation.

1. Available Manufacturers:

a. AEP-Span.

b. Berridge Manufacturing Company.

c. Cheney Flashing Company.

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d. Copper Sales Inc.

e. K-Metals Inc.

f. Merchant & Evans, Inc.

g. Metal Sales Manufacturing Corporation.

h. Reynolds Metals Company

i. Skyline Metals (local)

2. Profile: Standing seam

3. Material: Metallic-coated steel sheet, 26 gauge.

4. Uplift Rating: UL [30]

5. Sealant: Factory applied within interlocking joint.

2.5 ACCESSORIES

A. Roof Panel Accessories: Provide components required for a complete metal roof panel assembly including trim, copings, fasciae, corner units, ridge closures, clips, 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.

2. Closure Strips: Closed-cell, expanded, cellular, rubber or crosslinked, polyolefin-foam or closed-cell laminated polyethylene; minimum 1-inch- (25-mm-) thick, flexible closure strips; cut or premolded to match metal roof panel profile. Provide closure strips where indicated or necessary to ensure weathertight construction.

B. Flashing and Trim: Formed from 0.0179-inch- (0.45-mm-) thick, metallic-coated steel sheet. Provide flashing and trim as required to seal against weather and to provide finished appearance. Locations include eaves, rakes, corners, bases, framed openings, ridges, fasciae, and fillers. Finish flashing and trim with it finishes system as adjacent metal roof panels.

C. Gutters: Formed from 0.0179-inch- (0.45-mm-) thick, metallic-coated steel sheet. Match profile of gable trim, complete with end pieces, outlet tubes, and other special pieces as required. Fabricate in minimum 96-inch- (2400-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. Provide bronze, copper, or aluminum wire ball strainers at outlets. Finish gutters to match metal roof panels.

D. Downspouts: Formed from 0.0179-inch- (0.45-mm-) thick, metallic-coated steel sheet;

in 10-foot- (3-m-) long sections, complete with formed elbows and offsets. Finish downspouts to match metal roof panels.

E. Roof Curbs: Fabricated from 0.0478-inch- (1.2-mm-) thick, metallic-coated steel sheet;

with welded top box and bottom skirt, and integral full-length cricket. Fabricate curb

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subframing of minimum 0.0598-inch- (1.5-mm-) thick, angle-, C-, or Z-shaped steel sheet. Fabricate curb and subframing to withstand indicated loads, of size and height indicated. Finish roof curbs to match metal roof panels.

2.6 FABRICATION

A. General: Fabricate and finish metal roof panels and accessories at the factory to greatest extent possible, by manufacturer's standard procedures and processes, as necessary to fulfill indicated performance requirements demonstrated by laboratory testing. Comply with indicated profiles and with dimensional and structural requirements.

B. Provide panel profile, including major ribs and intermediate stiffening ribs, if any, for full length of panel.

C. Where indicated, fabricate metal roof panel joints with factory-installed captive gaskets or separator strips that provide a tight seal and prevent metal-to-metal contact, in a manner that will minimize noise from movements within panel assembly.

D. Sheet Metal Accessories: Fabricate flashing and trim to comply with recommendations in SMACNA's "Architectural Sheet Metal Manual" that apply to the design, dimensions, metal, and other characteristics of item indicated.

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

PART 3 - EXECUTION

3.1 PREPARATION

A. Install flashings and other sheet metal to comply with requirements specified in Division

7 Section "Sheet Metal Flashing and Trim."

3.2 UNDERLAYMENT INSTALLATION

A. Self-Adhering Sheet Underlayment: Install self-adhering sheet underlayment, wrinkle free, on roof sheathing under metal roof panels. Comply with temperature restrictions of underlayment manufacturer for installation; use primer rather than nails for installing underlayment at low temperatures. Apply over entire roof, in shingle fashion to shed water, with end laps of not less than 6 inches (150 mm) staggered 24 inches (600 mm) between courses. Overlap side edges not less than 3-1/2 inches (90 mm). Roll laps with roller. Cover underlayment within 14 days.

B. Felt Underlayment: Install felt underlayment and building-paper slip-sheet on roof sheathing under metal roof panels. Use adhesive for temporary anchorage. Apply over entire roof deck, in shingle fashion to shed water, with lapped joints of not less than 2 inches (50 mm).

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C. Apply slip-sheet over underlayment before installing metal roof panels.

3.3 METAL ROOF PANEL INSTALLATION, GENERAL

A. General: Provide metal roof panels of full length from eave to ridge, unless otherwise indicated or restricted by shipping limitations. 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 is not permitted.

2. Rigidly fasten eave end of metal roof panels and allow ridge end free movement due to thermal expansion and contraction. Predrill panels.

3. Provide metal closures at peaks, 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. Locate panel splices over, but not attached to, structural supports. Stagger panel splices and end laps to avoid a four-panel lap splice condition.

6. Lap metal flashing over metal roof panels to allow moisture to run over and off the material.

B. Fasteners:

1. Steel Roof Panels: Use stainless-steel fasteners for surfaces exposed to the exterior and galvanized steel fasteners for surfaces exposed to the interior.

C. 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.

1. Coat back side of aluminum roof panels with bituminous coating where roof panels will contact wood, ferrous metal, or cementitious construction.

D. 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 double beads of tape or sealant, full width of panel. Seal side joints where recommended by metal roof panel manufacturer.

3.4 FIELD-ASSEMBLED METAL ROOF PANEL INSTALLATION

A. Lap-Seam Metal Roof Panels: Fasten metal roof panels to supports with fasteners at each lapped joint at location and spacing recommended by manufacturer.

1. Arrange and nest side-lap joints so prevailing winds blow over, not into, lapped joints. Lap ribbed or fluted sheets one full rib corrugation.

LA JARA DWELLING ROOF REPLACEMENT 18

2. Provide metal-backed washers under heads of exposed fasteners bearing on weather side of metal roof panels.

3. Locate and space exposed fasteners in uniform vertical and horizontal alignment.

4. Install screws in predrilled holes.

5. Provide sealant tape at lapped joints of metal roof panels and between panels and protruding equipment, vents, and accessories.

6. Apply a continuous ribbon of sealant tape to weather-side surface of fastenings on end laps, and on side laps of nesting-type panels; on side laps of corrugated nesting-type, ribbed, or fluted panels; and elsewhere as needed to make panels weatherproof to driving rains.

7. At panel splices, nest panels with minimum 6-inch (150-mm) end lap, sealed with butyl-rubber sealant and fastened together by interlocking clamping plates.

3.5 ACCESSORY 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.

3. Provide elbows at base of downspouts to direct water away from building.

4. Tie downspouts to underground drainage system indicated.

3.6 CLEANING AND PROTECTION

A. Remove temporary protective coverings and strippable films, 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.

END OF SECTION 074113

LA JARA DWELLING ROOF REPLACEMENT 19

SECTION 076200

SHEET METAL FLASHING AND TRIM

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes the following sheet metal flashing and trim:

1. Formed steep-slope roof flashing and trim

B. General: Install sheet metal flashing and trim to withstand wind loads, structural movement, thermally induced movement, and exposure to weather without failing, rattling, leaking, and fastener disengagement.

C. Fabricate and install roof edge flashing capable of resisting the following forces according to recommendations of FMG Loss Prevention Data Sheet 1-49:

1. Wind Zone 1: For velocity pressures of 10 to 20 lbf/sq.ft. (0.48 to 0.96kPa): 40-lbf/sq. ft. (1/92-kPa) perimeter uplift force, 60-lbf/sq. ft. (2.87-kPa) corner uplift force, and 20-lbf/sq. ft. (0.96-kPa) outward force.

2. Wind Zone 1: For velocity pressures of 21 to 30 psf (1.00 to 1.44 kPa): 60-lbf/sq.

ft (2.87-kPa) perimeter uplift force, and, 90-lbf/sq. ft. (4.31-kPa) corner uplift force, and

30-lf/sq. ft. (1.44-kPa) outward force.

3. Wind Zone 2: For velocity pressures of 31 to 45 psf (1.48 to 2.15 kPa): 90-lbf/sq. ft

(4.31-kPa) perimeter uplift force, and, 120-lbf/sq. ft. (5.74-kPa) corner uplift force, and

45-lbf/sq. ft (2.15-kPa) outward force.

4. Wind Zone 3: For velocity pressures of 46 to 104 psf (2.20 to 4.98 kPa): 208-lbf/sq. ft. (9.96-kPa) perimeter uplift force, and, 312-lbf/sq. ft. (14.94-kPa) corner uplift force, and 104-lbf/sq. ft.(4.98-kPa) outward force.

D. Thermal Movements: Provide sheet metal flashing and trim that allow for thermal movements resulting from the following maximum change (range) in ambient and surface temperatures by preventing 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 sheet metal and trim thermal movements. Base engineering calculation on surface temperatures of materials due to both solar heat gain and nighttime-sky heat loss.

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

C), material surfaces.

E. Water Infiltration: Provide sheet metal flashing and trim that do not allow water infiltration to building interior.

LA JARA DWELLING ROOF REPLACEMENT 20

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.

B. Shop Drawings: Show layouts of sheet metal flashing and trim, including plans and elevations. Distinguish between shop and field-assembled work. Include the following.

1. Identify 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 fastening, joining, supporting, and anchoring sheet metal flashing and trim, including fasteners, clips, cleats, and attachments to adjoining work.

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

C. Samples for Selection: For each type of sheet metal flashing and trim indicated with factory-applied color finishes.

1. Include similar samples color options for K-style gutters

1.4 QUALITY ASSURANCE

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

Metal Manual." Conform to dimensions and profiles shown unless more stringent requirements are indicated.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Deliver sheet metal flashing materials and fabrications undamaged. Protect sheet metal flashing and trim materials and fabrications during transportation and handling.

B. Unload, store, and install sheet metal flashing materials and fabrications in a manner to prevent bending, warping, twisting, and surface damage.

C. Stack materials on platforms or pallets, covered with suitable weather-tight and ventilation covering. Do not store sheet metal flashing and trim materials in contract with other materials that might cause staining, denting, or other surface damage.

1.6 COORDINATION

A. Coordinate installation of sheet metal flashing and trim with interfacing and adjoining construction to provide a leak-proof, secure, and non-corrosive installation.

PART 2 – PRODUCTS

2.1 SHEET METALS

LA JARA DWELLING ROOF REPLACEMENT 21

A. Pre-painted, Metallic-Coated Steel Sheets: Steel sheet metallic coated by the hot-dip process and pre-painted by the coil-process to comply with ASTM A 755/A 755M.

1. Zinc-Coated (Galvanized) Steel Sheet: ASTM A 653/A 653M, G90 (Z275) coating designation; structural quality.

2. Exposed Finished: Apply the following coil coating:

1) Fluoropolymer 3-Coat System: Manufacturer's standard 3-coat, thermocured system consisting of specially formulated inhibitive primer, fluoropolymer color coat, and clear fluoropolymer topcoat, with both color coat and clear topcoat containing not less than 70 percent polyvinylidene fluoride resin by weight, with a minimum total dry film thickness of 1.5 mill (0.038 mm); complying with physical properties and coating performance requirements of AAMA 2605, except as modified below:

2) Color: As selected by Contracting Officer’s from manufacturer's full range. A shade of brown closely matching the building trim is preferred.

B. Zinc-Coated (Galvanized) Steel Sheet: ASTM A 653/A 653M, G90 (Z275) coating designation; structural quality.

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.

B. Fasteners: Wood screws, annular threaded nails, self-tapping screws, self-locking rivets and bolts, and other suitable fasteners designed to withstand design loads.

1. Fasteners for Flashing and Trim: Blind fasteners or self-drilling screws, gasketed, with hex washer head.

2. Blind Fasteners: High-strength aluminum or stainless-steel rivets.

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

C. Sealing Tape: Pressure-sensitive, 100 percent solids, polyisobutylene compound sealing tape with release-paper backing. Provide permanently elastic, non-sag, non-toxic, non-staining tape.

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.

LA JARA DWELLING ROOF REPLACEMENT 22

E. Epoxy Seam Sealer: Two-part, non-corrosive, aluminum seam-cementing compound, recommended by aluminum manufacturer for exterior nonmoving joints, including riveted joints.

F. Bituminous Coating: Cold-applied asphalt mastic, SSPC-paint 12, compounded for 15-mil (0.4 mm) dry film thickness per coat. Provide inert-type non-corrosive compound free of asbestos fibers, sulfur components, and other deleterious impurities.

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

2.3 STEEP-SLOPE ROOF SHEET METAL FABRICATIONS

A. Drip Edges: Fabricate from the following material:

1. Pre-painted, Metallic-Coated Steel: 0.0217 inch (0.55 mm) thick.

B. Chimney Flashing and Step Flashing: Fabricate from the following material:

1. Galvanized Steel: 0.0217 inch (0.55 mm) thick.

C. Roof Penetration Flashing:

1. For vents: Integral pipe flashing system: base = aluminum zinc Alloy coated steel,

0.0217 inches (0.55mm) thick, pipe = Schedule 40 PVC pipe, Available from

Copperstate Roofing Supply: Ph: 800-474-7570, or approved equal.

2. For masts: round retrofit bottom pipe flashing boot: base = aluminum zinc Alloy coated steel, 0.0217 inches (0.55mm) thick, boot = EDPM. Available from

Copperstate Roofing Supply: Ph: 800-474-7570, or equal.

2.4 FINISHES

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

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

C. Appearance of Finished Work: Variations in appearance of abutting or adjacent pieces are acceptable if they are within one-half of the range of approved Samples. Noticeable variations in the same piece are not acceptable. Variations in appearance of other components are acceptable if they are within the range of approved Samples and are assembled or installed to minimize contrast.

2.5 METAL FLASHING AND TRIM

A. Fabricate sheet metal flashing and trim to comply with recommendations in SMACNA's

"Architectural Sheet Metal Manual" that apply to design, dimensions, metal, and other characteristics of item.

LA JARA DWELLING ROOF REPLACEMENT 23

1. Drip Edges: Fabricate in lengths not exceeding 10 feet (3m) with 2-inch (50 mm) roof deck flange and 2-inch (38 mm) fascia flange with 3/8-inch (9.6 mm) drip at lower edge.

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 work

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

2. 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 coating, separators, sealants, and other miscellaneous items as required to complete sheet metal flashing and trim system.

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

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 fabricator or manufacturers of dissimilar metals

1. Underlayment; Where installing metal flashing directly on cementitious or wood substrates, install a course of self-adhered rubber membrane.

2. Bed flanges in thick coat of asphalt roofing cement where required for waterproof performance.

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

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

E. 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.

1. Space cleats not more than 12 inches (300 mm) apart. Anchor each cleat with two fasteners. Bend tabs over fasteners.

F. Expansion Provisions: Provide for thermal expansion of exposed flashing and trim. Space movement joints at a maximum of 10 feet (3 m) with no joints allowed within 24 inches

(600 mm) of corner or intersection. Where lapped or bayonet-type expansion provisions cannot be used or would not be sufficiently watertight, form expansion joints of

LA JARA DWELLING ROOF REPLACEMENT 24

intermeshing hooked flanges, not less than 1 inch (25 m m ) deep, filled with elastomeric sealant concealed within joints.

G. Fasteners: Use fasteners of sizes that will penetrate substrate not less than 1-14 inches

(32 mm) for nails and not less than 3/4 inch (19 mm) for wood screws.

1. Galvanized or Pre-painted, Metallic-Coated Steel: Use stainless-steel fasteners.

H. Seal joints with elastomeric sealant as required for watertight construction.

1. Where sealant-filled joints are used, embed hooked flanges of joint members not less than 1 inch (25 m m ) into sealant. Form joints to completely conceal sealant.

When ambient temperature at time of installation is moderate, between 40 and 70 deg F (4 and 21 deg C), set joint members for 50 percent movement either way.

Adjust setting proportionately for installation at higher ambient temperatures. Do not install sealant-type joints at temperatures below 40 deg F (4 deg C).

2. Prepare joints and apply sealants to comply with requirements in Division 7

Section "Joint Sealants."

3.3 METAL FLASHING INSTALLATION

A. General: Install metal flashings and other sheet metal to comply with performance requirements 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 tight.

1. Install metal flashings according to recommendations in the National Roofing

Contractor’s Association (NRCA's) "The NRCA Roofing and Waterproofing

Manual."

B. Rake Drip Edges: Install rake drip edge flashings over underlayment and fasten to roof deck.

C. Eave Drip Edges: Install eave drip edge flashings below underlayment and fasten to roof sheathing.

D. Roof Penetration Flashing Systems: Coordinate installation of roof-penetration flashings with the installation of roofing and other items penetrating the roof Install in accordance with manufacturer’s instructions.

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 and sealants.

C. Remove temporary protective coverings and strippable films as sheet metal flashing and trim are installed. On completion of installation, clean finished surfaces, including removing unused fasteners, metal filings, pop rivet stems, and pieces of flashing.

Maintain in a clean condition during construction.

LA JARA DWELLING ROOF REPLACEMENT 25

D. 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…