B08 Solicitation - Statement of Work - Roof Replacement.pdf

PERRY’S VICTORY & INTERNATIONAL

PEACE MEMORIAL

PUT-IN-BAY, OHIO

REPLACE ASPHALT SHINGLE ROOFS

ON HOUSES #50 AND #80

PMIS 224366

PROJECT SPECIFICATIONS

NATIONAL PARK SERVICE

MAY 1, 2020

TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

Section 01 10 00 - Division 01 Short Form General Requirements

DIVISION 07 – THERMAL AND MOISTURE PROTECTION

Section 07 31 13 – Asphalt Shingles

DRAWINGS AND PHOTOGRAPHS

Photographs are included at the end of specification package in Appendices.

As-built drawings are provided in a separate document.

PEVI 224366 05/01/2020

DIVISION 01 GENERAL REQUIREMENTS 011000 - 1

SECTION 01 10 00

DIVISION 1 SHORT FORM GENERAL REQUIREMENTS

PART 1 – GENERAL

ITEM 1 - DESCRIPTION OF WORK

1.1 Background: The roofs on houses #50 and #80 are original to the structures built in 1993. At over 20 years old, new roofing will ensure the maintenance of a weather- and water-tight exterior and prevent deterioration of interior and structural elements.

1.2 Work Covered by the Contract Documents:

A. Project Location: Perry’s Victory & International Peace Memorial

1. 50 Park Avenue, Put-in-Bay, OH 43456.

2. 80 Park Avenue, Put-in-Bay, OH 43456.

B. Work consists of:

1. Roofing:

a. Full tear-off of existing asphalt shingle roof system down to roof deck of House #50 and #80.

b. Re-cover preparation of exterior roof area where tear-off occurs, including installation of new roofing system.

c. Removal of flashings and counterflashings.

d. Replace closed valleys with new open-valley flashing.

e. Removal and replacement of plumbing vents and boots in kind.

f. Temporary roofing during construction where required. Temporary roofing shall maintain the project roof is watertight and able to prevent leaks and damage to the building and structure until the reroofing work is completed. Contractor is to make sure that the completion of work each day and prior to inclement weather that the projects roof is 100% watertight.

2. Gutters and downspouts:

a. Remove and replace all gutters and downspouts on House #50 and #80.

b. All gutters and downspouts to be replaced in kind and in the same locations.

C. All work will be performed under a single contract.

D. Period of performance: Work shall be completed within 90 calendar days after issuance of the notice to proceed.

ITEM 2 - EXISTING UTILITIES

2.1 Contractor shall be responsible for locating and preventing damage to known utilities. If damage occurs, repair utility at no additional expense to the Government. If damage occurs to an unknown utility, repair utility. An equitable adjustment will be made in accordance with the Changes clause of the contract.

DIVISION 01 GENERAL REQUIREMENTS 011000 - 2

2.2 Existing Utility Interruptions: Do not interrupt utilities serving facilities occupied by Government or others unless permitted under the following conditions and then only after arranging to provide temporary utility services according to requirements indicated:

2.2.1 Notify Contracting Officer not less than two days in advance of proposed utility interruptions.

ITEM 3 - CONTRACTOR’S USE OF PREMISES

3.1 Conduct of Operations: At all times the contractor shall conduct his operations in conformance with the rules and regulations promulgated by the Secretary of the Interior for the National Park Service, and applicable park rules and regulations prescribed by the Park Superintendent.

A. No signs or advertisements (except those specified herein) shall be displayed on the construction site or within the park unless approved by the Contracting Officer.

B. Smoking is not permitted within any Federal building or within 25 feet of entrances, operable windows, or outdoor air intakes.

C. Pubic Use of Site: Contractor shall at all times conduct operations to ensure the least inconvenience to the public.

3.2 On-site work hours: Work shall be generally performed during normal business working hours of

8 a.m. to 5 p.m., Monday through Friday, except when otherwise indicated.

A. Work on Saturdays, Sundays, Federal holidays, early morning, or at night may not be performed without prior consent from the Contracting Officer. Submit requests for work outside of the stated normal business hours to the Contracting Officer for approval at least 48 hours in advance of the work.

3.3 Contractor Use of Site:

A. General: Contractor shall have limited use of the site for construction operations. Limit use of premises to areas identified on site plan in drawings. Do not disturb portions of Project site beyond areas in which the Work is indicated.

B. Contractor Parking: Contractor and workers may park on the side of Park Avenue. Must allow room for traffic and provide traffic cones around vehicles and equipment.

C. Driveways and Entrances: Keep driveways, access roads, 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. Schedule deliveries to minimize use of driveways and entrances.

D. Limit site disturbance, including earthwork and clearing of vegetation, to:

1. 40 feet beyond building perimeter.

2. 10 feet beyond surface walkways, patios, surface parking, and utilities less than 12 inches in diameter.

3. 15 feet beyond primary roadway curbs and main utility branch trenches.

DIVISION 01 GENERAL REQUIREMENTS 011000 - 3

4. 25 feet beyond constructed areas with permeable surfaces (such as pervious paving areas, storm water detention facilities, and fields) that require additional staging areas in order to limit compaction in the constructed area.

E. Security and Protection facilities installation:

1. Environmental Protection: 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.

2. Cleaning of Equipment: The Contractor shall ensure that prior to moving on to the Project Area, all equipment, is free of soil, seeds, vegetative matter, or other debris that could contain or hold seeds. Ensure that all equipment has been pressure washed and is free of exotic species prior to start-up of operations and moving of equipment to Project Area. Equipment shall be considered free of soil, seeds, and other debris when a visual inspection does not disclose such material. Disassembly of equipment components or specialized inspection tools are not required.

3. Tree and Plant Protection: Provide Tree Protection fence at drip line of trees impacted in construction area. Coordinate with COR.

4. Pest Control: Follow NPS requirements and practices to minimize attraction and harboring of rodents, roaches, and other pests and to perform extermination and control procedures at regular intervals so Project will be free of pests and their residues at Substantial Completion. Perform control operations lawfully, using environmentally safe materials.

5. Barriers: Provide caution tape at end of driveways to alert local tenants of on-going construction areas.

3.4 Storage - Staging Areas:

A. Confine Storage of materials and equipment to the project area. Driveway of project locations can be used for storage of materials. Limits of use and control shall be subject to Contracting Officer’s approval. Schedule deliveries to minimize space and time requirements for storage of materials and equipment on-site.

B. Coordinate the location of dumpsters with COR prior to start of work.

3.5 Hauling Restrictions: Match State and County road requirements for all park work/access.

3.6 Housekeeping:

A. Keep project neat, orderly, and in a safe condition at all times. Store and use equipment, tools, and materials in a manner that does not present a hazard. Immediately remove all hazardous rubbish. Do not allow rubbish to accumulate. Provide onsite containers for collection of rubbish and dispose of it at frequent intervals during progress of work.

B. Dispose of waste materials legally using contractor-provided dumpsters.

3.7 Contractor to provide porta-johns on site for workers. Coordinate location with COR prior to start of work.

DIVISION 01 GENERAL REQUIREMENTS 011000 - 4

3.8 Occupancy Requirements for Buildings:

A. Existing Buildings:

1. Full Government Occupancy: Government will occupy buildings that will be under construction during the entire contract 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.

a. 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 the CO.

b. 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.

3.9 Photo Documentation:

A. All photos shall be in focus, show maximum range of depth of field general photo and then close up detail photo as needed. Shall be in JPEG digital form and submitted w/daily documents to the COR.

B. Existing Condition Images: Before starting construction, take color, dated, digital images of project site and adjacent property/roads/etc. that may be impacted by construction activity/traffic. Include existing items to remain or be salvaged from different vantage points and with context for location identification.

C. Construction Images:

1. Maintain organized index for photos with date, description, etc.

2. Additional images as needed when questions or emergency situations occur. Submit within 24 hours.

3.10 Fire and Life Safety:

As a minimum, conduct one weekly 15-minute "toolbox" safety meetings. These meetings shall be conducted by a foreman or supervisor and attended by all construction personnel at the worksite.

Topics need to coincide with work scheduled for the following week. Document and submit meeting minutes to the Contracting Officer within one day after the meeting.

A. Comply with the requirements of NFPA 241 (Standard for Safeguarding Construction, Alteration, and Demolition Operations).

B. Store and handle hazardous materials in accordance with manufacturer’s and OSHA 29CFR1926 Subpart D requirements. Maintain readily available, on site, MSDS/Safety Data Sheets (SDS) for each chemical.

1. Immediately report all spills of hazardous materials to the park.

DIVISION 01 GENERAL REQUIREMENTS 011000 - 5

2. Maintain a spill emergency response kit.

3. Train employees how to respond to a spill and use the emergency response kit.

3.11 Noise and Acoustics Management:

A. Noise Control: Perform demolition and re-roof operations to minimize noise. Perform noise-producing work in less sensitive hours of the day or week as directed by the Contracting Officer.

B. Repetitive and/or intermittent, high-level noise: Permitted only during Daytime.

1. Do not exceed the following dB(A) limitations at 50 feet:

Sound Level in dB(A) Time Duration of Impact Noise 70 More than 12 minutes in any hour 80 More than 3 minutes in any hour

2. Maximum permissible construction equipment noise levels at 50 feet:

EARTHMOVING dB(A) MATERIALS HANDLING dB(A) Compressors 75 Pneumatic Tools 80 Pumps 75 Saws 75 Generators 75 Vibrators 75

C. Ambient Noise:

1. Maximum noise levels (dB) for receiving noise area at property line shall be as follows:

a. Residential receiving area :

Daytime: 65 dB Nighttime: 45 dB

b. Commercial/Industrial receiving area:

Daytime: 67 dB Nighttime: 65 dB

ITEM 4 - COMMENCEMENT, PROSECUTION, AND COMPLETION

4.1 The Contractor shall commence work once the Notice to Proceed is issued. The period of performance for this contract is 120 days after the Notice to Proceed has been issued.

ITEM 5 - EXAMINATION OF THE SITE

5.1 All bidders are urged to visit the job site and examine existing conditions before submitting bids.

All bidders will be held to have the same knowledge concerning the site and the on-ground conditions as if they had inspected the job site.

ITEM 6 - ABBREVIATIONS

6.1 The list of abbreviations, which may be used in the Construction Specifications or Special Provisions, refer to the organizations and specifications of the organizations may be found at the following: https://www.nps.gov/orgs/1671/do-business-with-us.htm

ITEM 7 - ACCIDENT PREVENTION

https://www.nps.gov/orgs/1671/do-business-with-us.htm

DIVISION 01 GENERAL REQUIREMENTS 011000 - 6

7.1 Description: The work of this section consists of establishing and implementing an effective accident prevention program and providing a safe environment for all personnel and visitors.

A. It is the Contractor's responsibility to require all those working on or visiting the site to wear hard hats and other necessary personal protective equipment in good repair at all times. As a minimum, maintain four hard hats and all other APP required equipment.

7.2 Submittals:

A. Accident Prevention Program: At the preconstruction conference submit for approval an accident prevention program. The program shall include:

1. Name of responsible supervisor to carry out the program.

2. First aid procedures.

3. Training, both initial and continuing.

4. Planning for possible emergency situations.

5. Contractor to identify nearest location of medical facility for emergencies.

6. Recognition that work will be performed in remote areas with limited communication or cell phone coverage.

B. Meeting and Inspection Reports: Safety Meetings: As a minimum, conduct 15 minute "toolbox" safety meetings. These meetings shall be conducted by a foreman and attended by all construction personnel at the worksite. Submit a report of safety meetings and inspections.

7.3 Qualification of Employees:

A. Ensure that employees are physically qualified to perform their assigned duties in a safe manner to include operators of vehicles and equipment. Provide operating instructions for all equipment.

B. Do not allow employees to work whose ability or alertness is impaired because of drugs, fatigue, illness, intoxication, or other conditions that may expose themselves or others to injury.

7.4 Accident Reporting: The Contractor shall report all accidents to the Contracting Officer or designee as soon as possible and assist the Contracting Officer and other officials as required in the investigation of the accident.

7.5 First Aid Facilities: Provide adequate facilities for the number of employees and the type of construction at the site.

7.6 Emergency Instructions: Post telephone numbers and reporting instructions for ambulance, physician, hospital, fire department, and police in conspicuous locations at the work site.

7.7 Protective Equipment: It is the Contractor's responsibility to require all those working on or visiting the site to wear necessary protective equipment at all times.

7.8 Hazardous Materials: It shall be the responsibility of all operators and contractors, functioning within the park to properly cleanup, mitigate and remediate if necessary, all unauthorized

DIV

discharges of hazardous materials or non-hazardous chemical and biological products released from fleet and/or other support vehicles or stationary sources. Response shall be consistent with guidelines established by federal, state and local regulations, and as outlined within the operator's Safety or Hazardous Materials Business Plan.

A. If a spill, leak or other release occurs, the operator shall as soon as possible, without impeding cleanup, notify the National Park Service Emergency Dispatch.

ITEM 8 - PRECONSTRUCTION CONFERENCE: See FAR 52.236-26

ITEM 9 - SUBMITTALS

9.1 General Submittal Procedures:

A. General: Prepare and submit submittals required by individual Specification Sections. Types of submittals are indicated in individual specific sections.

1. CM-16 Transmittal Form: All submittals shall be transmitted via electronic email using National Park Service form CM-16 form. The form will be provided by the Contracting Officer.

No action will be taken on a submittal item unless accompanied by the CM-16 transmittal form. All submitttals to be sent to COR for review and approval.

B. Documents to be submitted to Contracting Office before NTP will be issued (all are due 10 days after notice of contract award – per block #12a of SF 1442 and this SOW):

1. Signed contract.

2. Alternative Payment Protection - Must provide either a Payment Bond or Irrevocable

Letter of Credit for construction contracts greater than $35,000, but not greater than $150,000

• Payment Bonds - Must be provided for construction contracts exceeding $150,000

• Performance Bond - Must be provided for any construction contract exceeding $150,000

3. Certificate of Liability Insurance

4. Letter Designating the Project Manager and Site Superintendent and their authority as it pertains to this project

C. If all of the documents listed above have not been received, Notice to Proceed will not be issued, and the Contracting Officer will consider other contractual remedies. Work shall not commence until written Notice to Proceed has been issued.

9.2

8.1 A pre-construction conference between the awarded contractor, contracting office and COR will be held prior to the Notice to Proceed being issued. All items needed in order to schedule the preconstruction conference and issue the Notice to Proceed are listed in Item # 9.1 General Submittal Procedures – C. #’s 1-4

ISION 01 GENERAL REQUIREMENTS 011000 - 7

Shop Drawings, Product Data, and Samples: Contracting Officer will provide sample cover sheet.

A. For submittals specified in following specifications forward all submittals to Contracting Officer at least 15 days before need for approval (depends on length of project).

DIVISION 01 GENERAL REQUIREMENTS 011000 - 8

B. After approving submittals, Contracting Officer will return one copy to the Contractor. If submittals are not approved, Contracting Officer will return all copies to Contractor with reasons for rejection. Resubmit, identifying changes. Any work done before approval shall be at Contractor's own risk.

9.3 Approved Equals: Refer to FAR 52.211-6 - If an item in this solicitation is identified as “brand name or equal”, the purchase description reflects the characteristics and level of quality that will satisfy the Government’s needs. The salient physical, functional, or performance characteristics that “equal” products must meet are specified in the solicitation or relevant specification.

A. For each item proposed as an “approved equal,” submit supporting data, including:

1. Drawings and samples as appropriate.

2. Comparison of the characteristics of the proposed item with that specified.

3. Changes required in other elements of the work because of the substitution.

4. Name, address, and telephone number of vendor.

5. Manufacturer’s literature regarding installation, operation, and maintenance, including schematics for electrical and hydraulic systems, lubrication requirements, and parts lists. Describe availability of maintenance service, and state source of replacement materials.

B. A request for approval constitutes a representation that Contractor:

1. Has investigated the proposed item and determined that it is equal or superior in all respects to that specified.

2. Will provide the same warranties for the proposed item as for the item specified.

3. Has determined that the proposed item is compatible with interfacing items.

4. Will coordinate the installation of an approved item and make all changes required in other elements of the work because of the substitution.

5. Waives all claims for additional expenses that may be incurred as a result of the substitution.

C. Approved Equals will be evaluated and approved/disapproved during the submittal process.

9.4 Progress Schedules: As soon as possible after Notice of Award and before beginning any work, submit Progress Schedule. Contracting Officer will review the Progress Schedule for format and content. The first progress payment will not be issued until an acceptable progress schedule is submitted. The following information must accompany submission of progress schedules prior to processing any pay application:

A. Daily/weekly progress reports during construction as part of the administration process.

B. Schedule of Values: Breakdown each lump-sum item into component work activities used in the schedule, for which progress payments may be requested. The Schedule of Values will form the basis for payment. The work activities broken out within the schedule of values shall be integrated into and made a logical part of the construction baseline schedule submitted under this specification. The total costs for the component work activities shall equal the contract price for that lump-sum item. The Contracting Officer may request data to verify

DIVISION 01 GENERAL REQUIREMENTS 011000 - 9

accuracy of dollar values. A sample Schedule of Values will be provided by the Contracting Officer.

ITEM 10 – TEMPORARY SERVICES

10.1 Description: The work of this section consists of providing temporary services required for Contractor's performance of the work of this Contract.

10.2 Fire Prevention and Protection:

A. Hazard Control: Take all necessary precautions to prevent fire during construction. Provide adequate ventilation during use of volatile or noxious substances.

ITEM 11 - PROJECT CLOSEOUT

11.1 Description: The work of this section consists of final cleanup, closeout submittals, final inspection procedures, and safety precautions.

11.2 Cleaning: Remove all tools, equipment, surplus materials, and rubbish. At time of final inspection, project shall be thoroughly clean and ready for use.

11.3 Substantial Completion and Final Inspection: Submit written certification that project is substantially complete, and a final inspection must be requested to the Contracting Officer in writing. The Contracting Officer or designee will make an inspection within 10 days of receipt of request or at a mutually agreeable time.

A. If the work is determined to be substantially complete, following the final inspection, the.

Contracting Officer will prepare a Punch List and issue a Letter of Substantial Completion.

B. If the work is not determined to be substantially complete following the final inspection, the Contracting Officer will notify Contractor in writing. Contractor shall request a new final inspection after completing the work. Re-inspection costs may be charged against the Contractor in accordance with the Inspection of Construction contract clause.

C. Contractor shall complete the Punch List within 30 calendar days, documented weather permitting.

D. If Contracting Officer determines that the work is not substantially complete; he will immediately notify Contractor in writing, stating reasons. After completing work, Contractor shall resubmit certification and request a new final inspection. Re-inspection costs may be charged against the Contractor in accordance with the Inspection of Construction contract clause.

E. If Contractor completes all items of work on the Punch List and all contractually required items, Contracting Officer will issue Letter of final acceptance of work.

F. If the Contractor fails to complete the work within the time frame, the Contracting Officer may correct the work with an appropriate reduction in contract price or charge for re-inspection costs in accordance with the Inspection of Construction contract clause.

DIVISION 01 GENERAL REQUIREMENTS 011000 - 10

G. Disposition of any permits and warranties required by the specifications in this section.

11.4 Acceptance of the Work: After all deficiencies have been corrected, a Letter of Acceptance will be issued. A Release of Claims document must be executed and submitted to the Contracting Officer before final payment can occur.

11.5 Warranties

A. 1 year Construction Warranty shall be based on date of final acceptance of the project for workmanship.

B. Provide All Warranty information of products installed organized by Division. All contact information, extents and conditions shall be clearly noted as well as date of overall project Substantial Completion.

C. Information shall include operation and maintenance manuals for each warranted material.

PART 2 – PRODUCTS (NOT USED)

PART 3 – EXCUTION (NOT USED)

END OF SECTION

ASPHALT SHINGLES 073113 - 1

SECTION 073113

ASPHALT SHINGLES

PART 1 - GENERAL

1.1 SCOPE OF WORK

A. Work consists of the following:

1. Full tear-off of roof system at areas indicated on Drawings or in Photographs provided.

a. Removal of existing roofing system down to existing roof deck.

2. Re-cover preparation of entire roof area where tear-off occurs, including installation of new roofing system.

3. Removal of flashings and counterflashings.

4. Removal and replacement of gutters and downspouts.

5. Removal and replacement of plumbing vents and boots in kind.

6. Temporary roofing during construction where required. Temporary roofing shall maintain the project roof is watertight and able to prevent leaks and damage to the building and structure until the reroofing work is completed. Contractor is to make sure that at the completion of work each day the projects roof is 100% watertight.

7. Remove and replace the existing asphalt shingle roof system and associated roof flashings, down to deck and patch any openings in the structural decking as required before installing the new roof system, associated metal roof flashings and trims. Replace existing roof gutters and downspouts.

8. National Park Service (NPS) requires the existing roof decks to be walked after demolition has been completed with their onsite Contracting Office Representative (COR) or designated Project Inspector prior to installation of any new roof materials to ascertain if any water penetration has caused deterioration or corrosion of the existing decks which are to remain. If there are areas of concern the COR may require the Contractor to perform pull out tests to determine if the existing decking in question can remain or if it will need to be replaced. This can include visible areas of water damage or insect related damage. Testing and replacement of these types of unforeseen damaged areas will be by Change Order if required.

B. Roof Area:

1. Refer to as-built drawings and roof plan with general dimensions ±.

2. Note the Contractor is encouraged to field verify roof dimensions prior to bidding.

1.2 SUMMARY

A. Section Includes:

1. Selective Demolition.

2. Glass-fiber-reinforced asphalt shingles.

3. Underlayment materials.

4. Vents and plumbing stack boots.

ASPHALT SHINGLES 073113 - 2

5. Sheet metal flashing and trim.

6. Gutter and downspouts.

1.3 PREINSTALLATION MEETINGS

A. Preinstallation Conference: Conduct conference at Project site.

1.4 ACTION SUBMITTALS

A. Product Data: For the following:

1. Asphalt shingles.

2. Underlayment materials.

3. Ridge vents.

4. Asphalt roofing cement.

5. Elastomeric flashing sealant.

6. Vents and plumbing stack boots.

7. Sheet metal flashing and trim.

B. Shop Drawings:

1. For sheet metal flashing and trim.

2. Detail of open-valley flashing.

C. Samples: For each exposed product and for each color and blend specified.

1.5 INFORMATIONAL SUBMITTALS

A. Product test reports.

B. Research reports for synthetic underlayment.

C. Sample warranty.

1. Material warranty.

2. Roofing installer warranty.

1.6 SUBMITTAL COORDINATION

A. Submittal List: A submittal list has been attached to the end of this Specification Section. The intent is to provide an overall summary of the submittal requirements and not a comprehensive list. The requirements of the individual Specification Sections, terms and conditions of the Contract still apply regardless of what is shown on the submittal list.

1.7 CLOSEOUT SUBMITTALS

A. Maintenance data.

ASPHALT SHINGLES 073113 - 3

1.8 QUALITY ASSURANCE

A. Installer Qualifications: An authorized installer who is trained and approved by manufacturer.

1.9 WARRANTY

A. Materials Warranty: Manufacturer agrees to repair or replace asphalt shingles that fail within specified warranty period.

1. Materials Warranty Period: 30 years from date of Substantial Completion, prorated, with first 10 years nonprorated.

2. Wind-Speed Warranty Period: Asphalt shingles will resist blow-off or damage caused by wind speeds of up to 130 mph (58.1 m/s) for 15 years from date of Substantial Completion.

3. Algae-Resistance Warranty Period: Asphalt shingles will not discolor for 20 years from date of Substantial Completion.

B. Roofing Installer’s Warranty: Roofing installer to provide and sign a Roofing Installer’s Warranty in which Installer agrees to repair or replace components of asphalt-shingle roofing that fail in materials or workmanship within specified warranty period.

1. Warranty Period: Five years from date of Substantial Completion.

PART 2 - PRODUCTS - all items below are subject to brand name or "or equal" products

2.1 PERFORMANCE REQUIREMENTS

A. Exterior Fire-Test Exposure: Provide asphalt shingles and related roofing materials identical to those of assemblies tested for Class A fire resistance in accordance with American Society of Testing Materials (ASTM) E108 or UL 790 by Underwriters Laboratories or another testing and inspecting agency acceptable to authorities having jurisdiction. Identify products with appropriate markings of applicable testing agency.

B. Wind Resistance: Provide asphalt shingles that comply with requirements of ASTM D7158/D7158M, Class H.

C. Shingles:

1. Mineral granular-surfaced asphalt shingles.

a. Self-sealing.

b. Square tab.

c. Fungus-resistant.

d. Impact resistant shingles, Class 4.

e. Type I, weighing not less than 290 pounds per 100 square feet.

2.2 GLASS-FIBER-REINFORCED ASPHALT SHINGLES

A. Laminated-Strip Asphalt Shingles: ASTM D3462/D3462M, laminated, multi-ply overlay construction; glass-fiber reinforced, mineral-granule surfaced, and self-sealing.

1. Basis of Design: GAF Timberline HD Shingles.

ASPHALT SHINGLES 073113 - 4

2. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Atlas Molded Products; a Division of Atlas Roofing Corporation.

b. CertainTeed Corporation.

c. GAF.

d. Owens Corning.

e. Tamko Building Products, Inc.

f. Other Approved Equals.

3. Strip Size: Match existing; Manufacturer's standard approximately.

4. Algae Resistance: Granules resist algae discoloration.

5. Impact Resistance: Underwriters Laboratory (UL) 2218, Class 4.

6. Fire Resistance: UL 790 for Class A.

7. Color and Blends: As selected by COR from manufacturer's full range, match existing.

B. Hip and Ridge Shingles: Manufacturer's standard units to match asphalt shingles.

2.3 UNDERLAYMENT MATERIALS

A. Synthetic Underlayment: 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.

1. Basis of design: RhinoRoof U20, as manufactured by InterWrap, Inc.

a. Product requirements include the following minimum characteristics listed below:

1) Permeability ASTM E96 - .05 perms.

2) Water Transmission ASTM D4869 – pass.

3) Tear Strength ASTM D4533 – MD 30 lbs (14 kg).

4) Tensile Strength ASTM D751 – MD 80 lbs (36 kg).

5) Bursts Strength ASTM D751 – 150 psi (1033 kPa)

6) Nominal Thickness ASTM D1777 – 6 mils (0.15 mm).

7) Width Per Roll – 36 inches.

2. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Atlas Roofing Corporation.

b. CertainTeed Saint-Gobain.

c. GAF.

d. Owens Corning.

e. Tamko Building Products, Inc.

f. Other Approved Equals.

B. Valleys, Eaves, Rake, and Roof/Wall Intersections: Install Self-Adhering, Polymer-Modified Bitumen Sheet: ASTM D1970/D1970M, minimum 55-mil- (1.4-mm-) thick sheet; glass-fiber-mat-reinforced, polymer-modified asphalt; with slip-resistant top surface and release backing; cold applied. Material to be supplied in 36 inch wide rolls. Provide primer for adjoining concrete, masonry, and metal surfaces to receive underlayment as recommended by the manufacturer.

Approved product includes but is not limited to the following:

1. Grace Ice & Water Shield; Grace Construction Products.

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ASPHALT SHINGLES 073113 - 5

2. WinterGuard Waterproofing underlayment; CertainTeed.

3. RhinoRoof Granulated Self-Adhered underlayment.

4. Other Approved Equals.

2.4 ACCESSORIES

A. Asphalt Roofing Cement: ASTM D4586/D4586M Type II, asbestos free.

B. Roofing Nails: ASTM F1667, aluminum, stainless steel, copper, or hot-dip galvanized-steel wire shingle nails, minimum 0.120-inch- (3-mm-) diameter, sharp-pointed, with a 3/8- to 7/16-inch- (10- to 11-mm-) diameter flat head and of sufficient length to penetrate 3/4 inch (19 mm) into solid wood decking or extend at least 1/8 inch (3 mm) through sheathing less than 3/4 inch (19

mm) thick.

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

C. Synthetic Underlayment Fasteners: As recommended in writing by synthetic-underlayment manufacturer for application indicated.

2.5 SELECTIVE DEMOLITION

A. General: Demolish and remove existing construction only to the extent required by new construction and as indicated. Use methods required to complete the Work within limitations of governing regulations and as follows:

1. Full Roof Tear-off: Removal of existing roofing system down to existing roof deck or structure.

2. Temporarily protect existing roofing system and components that are to remain as required from damage.

3. Do not remove more roof than can be replace in a day, and the roof will be made watertight each night.

4. Remove debris and materials so as not to impose excessive loads on supporting roof, structure or framing.

5. Dispose of demolished items and materials promptly.

B. Removed and Reinstalled Items:

1. Clean and repair items to functional condition adequate for intended reuse.

2. Reinstall items in locations indicated, or in original locations as required. Comply with installation requirements for new materials and equipment. Provide connections, supports, and miscellaneous materials necessary to make item functional for use indicated.

3. Lightning protection to be removed and reinstalled by a certified installer.

C. Existing Items to Remain: Protect construction indicated to remain against damage and soiling during selective demolition.

D. Inspect deck after tear-off of roofing system.

1. If broken or loose fasteners that secure deck panels to one another or to structure are observed, or if deck appears or feels inadequately attached, immediately notify COR.

a. Do not proceed with installation until directed by COR.

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2. If deck surface is unsuitable for receiving new roofing or if structural integrity of deck is suspect, immediately notify COR.

a. Do not proceed with installation until directed by COR.

E. Disposal of Demolished Materials:

1. General: Except for items or materials indicated to be reused, salvaged, reinstalled, or otherwise indicated to remain NPS's property, remove demolished materials from Project site.

a. Do not allow demolished materials to accumulate on-site.

b. Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.

2. Burning: Do not burn demolished materials.

3. Disposal: Transport demolished materials off NPS's property and legally dispose of them.

F. Cleaning:

1. 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.

2.6 SHEET METAL FLASHING AND TRIM

A. Performance Requirements:

1. General: Sheet metal flashing and trim assemblies 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.

2. Sheet Metal Standard for Flashing and Trim: Comply with National Roofing Contractors Association’s (NRCA's) "The NRCA Roofing Manual" and Sheet Metal and Air Conditioning Contractors National Association’s (SMACNA's) "Architectural Sheet Metal Manual" requirements for dimensions and profiles shown unless more stringent requirements are indicated.

3. Single Ply Roofing Industry (SPRI) Wind Design Standard: Manufacture and install copings and roof edge flashings tested according to SPRI ES-1 and capable of resisting the following design pressure:

a. Design Pressure: 30 psf vertical design pressure.

4. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes to prevent buckling, opening of joints, overstressing of components, failure of joint sealants, failure of connections, and other detrimental effects. Base calculations on surface temperatures of materials due to both solar heat gain and nighttime-sky heat loss.

B. Sheet Metal:

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

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2. Metallic-Coated Steel Sheet: Provide zinc-coated (galvanized) steel sheet according to ASTM A 653/A 653M, G90 coating designation or aluminum-zinc alloy-coated steel sheet according to ASTM A 792/A 792M, Class AZ50 coating designation, Grade 40;

prepainted by coil-coating process to comply with ASTM A 755/A 755M.

a. Surface: Smooth, flat.

b. Exposed Coil-Coated Finish:

1) Two-Coat Fluoropolymer. American Architectural Manufacturers Association (AAMA) 621. 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.

c. Color: As selected by COR from manufacturer's full range, match existing.

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

C. Underlayment Materials:

1. Synthetic Underlayment: Laminated or reinforced, woven polyethylene or polypropylene, synthetic roofing underlayment; bitumen free; slip resistant; suitable for high temperatures over 111 deg C (220 deg F); and complying with physical requirements of ASTM D 22/D 226M for Type I and Type II felts.

D. Miscellaneous Materials:

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

2. 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.

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

1) Exposed Fasteners: Heads matching color of sheet metal using plastic caps or factory-applied coating. Provide metal-backed Ethylene Propylene Diene Monomer (EPDM) or Polyvinyl Chloride (PVC) sealing washers under heads of exposed fasteners bearing on weather side of metal.

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

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

3. Sealant Tape: Pressure-sensitive, 100 percent solids, polyisobutylene compound sealant tape with release-paper backing. Provide permanently elastic, nonsag, nontoxic, nonstaining tape 13 mm (1/2 inch) wide and 3 mm (1/8 inch) thick.

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4. Elastomeric Sealant: ASTM C 920, elastomeric polymer sealant; of type, grade, class, and use classifications required to seal joints in sheet metal flashing and trim and remain watertight.

5. 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. Fabrication General:

1. General: Custom fabricate sheet metal flashing and trim to comply with details shown and recommendations in cited sheet metal standard that apply to design, dimensions, geometry, metal thickness, and other characteristics of item required. Fabricate sheet metal flashing and trim in shop to greatest extent possible.

a. 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.

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

c. Form sheet metal flashing and trim to fit substrates without excessive oil canning, buckling, and tool marks; true to line, levels, and slopes; and with exposed edges folded back to form hems.

d. Conceal fasteners and expansion provisions where possible. Do not use exposed fasteners on faces exposed to view.

2. Fabrication Tolerances: Fabricate sheet metal flashing and trim that is capable of installation to a tolerance of ¼ inch in 20 feet on slope and location lines indicated on Drawings and within 1/8-inch offset of adjoining faces and of alignment of matching profiles.

3. Expansion Provisions: Form metal for thermal expansion of exposed flashing and trim.

a. Form expansion joints of intermeshing hooked flanges, not less than 25 mm (1 inch) deep, filled with butyl sealant concealed within joints.

b. Use lapped expansion joints only where indicated on Drawings.

4. Sealant Joints: Where movable, nonexpansion-type joints are required, form metal to provide for proper installation of elastomeric sealant according to cited sheet metal standard.

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

6. Fabricate cleats and attachment devices of sizes as recommended by cited sheet metal standard for application, but not less than thickness of metal being secured.

7. Seams: Fabricate nonmoving seams with flat-lock seams. Form seams and seal with elastomeric sealant unless otherwise recommended by sealant manufacturer for intended use.

F. Roof-Drainage Sheet Metal Fabrications:

1. Hanging Gutters: Fabricate cross section to match existing gutter profile, complete with end pieces, outlet tubes, and other accessories as required. Fabricate in minimum 2400-mm- (96-inch-) long sections. Furnish flat-stock gutter brackets and gutter spacers and straps fabricated from same metal as gutters, of size recommended by cited sheet metal

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standard but with thickness not less than twice the gutter thickness. Fabricate expansion joints, expansion-joint covers, and gutter accessories from same metal as gutters. Shop fabricate interior and exterior corners.

a. Aluminum-Zinc Alloy-Coated Steel: 0.71 mm (0.022 inch) thick.

2. Downspouts: Fabricate in style, size and shape to match existing downspouts to dimensions indicated, or to replace existing downspouts complete with mitered elbows.

Furnish with metal hangers from same material as downspouts and anchors. Shop fabricate elbows.

a. Aluminum-Zinc Alloy-Coated Steel: 0.71 mm (0.022 inch) thick.

G. Miscellaneous Roof Sheet Metal Fabrications:

1. Roof-Edge Flashing and Cap Flashing: Fabricate in minimum 96-inch- long, but not exceeding 12-foot- long, sections. Furnish with 6-inch- wide, joint cover plates.

a. Joint Style: Butted with expansion space and 6-inch-wide, concealed backup plate.

b. Fabricate from the Following Materials:

1) Aluminum-Zinc Alloy-Coated Steel: .0.024 inch thick.

2. Base Flashing: Fabricate from the following materials:

a. Aluminum-Zinc Alloy-Coated Steel: 0.024 inch thick.

3. Counterflashing and Flashing Receivers: Fabricate from the following materials:

a. Aluminum-Zinc Alloy-Coated Steel: 0.024 inch thick.

4. Roof-Penetration Flashing: Fabricate from the following materials:

a. Aluminum-Zinc Alloy-Coated Steel: 0.024 inch thick.

5. Vent-Pipe Flashings: ASTM B749, Type L51121, at least 1/16 inch (1.6 mm) thick.

Provide lead sleeve sized to slip over and turn down into pipe, soldered to skirt at slope of roof, and extending at least 4 inches (102 mm) from pipe onto roof.

PART 3 - EXECUTION

3.1 INSTALLATION OF UNDERLAYMENT MATERIALS

A. General: Comply with underlayment manufacturer's written installation instructions applicable to products and applications indicated unless more stringent requirements apply.

B. Synthetic Underlayment:

1. Install on roof deck parallel with and starting at the eaves.

a. Lap sides and ends and treat laps as recommended in writing by manufacturer, but not less than 2 inches (51 mm) for side laps and 6 inches (152 mm) for end laps.

b. Stagger end laps between succeeding courses at interval recommended in writing by manufacturer, but not less than 72 inches (1829 mm).

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c. Fasten with underlayment nails in accordance with manufacturer's written instructions.

d. Cover underlayment within period recommended in writing by manufacturer.

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.

4. Install synthetic underlayment over areas protected by self-adhering, polymer-modified bitumen sheet unless otherwise specified in this Section or indicated on Drawings.

a. Lap sides of underlayment over self-adhering sheet not less than 4 inches (102

mm) in direction to shed water.

b. Lap ends of underlayment not less than 6 inches (152 mm) over self-adhering sheet.

5. Terminate synthetic underlayment extended up not less than 4 inches (102 mm) against sidewalls, curbs, chimneys, and other roof projections.

C. Self-Adhering, Polymer-Modified Bitumen Sheet: Install, wrinkle free, on roof deck at all valleys, eaves, rakes, and roof/wall intersections.

1. Comply with low-temperature installation restrictions of underlayment manufacturer.

2. Install lapped in direction that sheds water.

a. Lap sides not less than 4 inches (102 mm).

b. Lap ends not less than 6 inches (152 mm), staggered 24 inches (610 mm) between succeeding courses.

c. Roll laps with roller.

3. Prime concrete, masonry, and metal surfaces to receive self-adhering sheet if required in writing by the manufacturer for installation of their underlayment.

4. Cover underlayment within seven days.

3.2 INSTALLATION OF SHEET METAL FLASHING AND TRIM

A. Examination:

1. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for installation tolerances, substrate, and other conditions affecting performance of the Work.

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

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

c. Verify that air- or water-resistant barriers have been installed over sheathing or backing substrate to prevent air infiltration or water penetration.

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

B. Underlayment Installation:

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1. Synthetic Underlayment: Install synthetic underlayment, wrinkle free, according to manufacturers’ written instructions, and using adhesive where possible to minimize use of mechanical fasteners under sheet metal.

C. General Installation:

1. 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, protective coatings, separators, sealants, and other miscellaneous items as required to complete sheet metal flashing and trim system.

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

b. 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.

c. Space cleats not more than 300 mm (12 inches) apart. Attach each cleat with at least two fasteners. Bend tabs over fasteners.

d. Install exposed sheet metal flashing and trim with limited oil canning, and free of buckling and tool marks.

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

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

2. Metal Protection: Where dissimilar metals contact each other, or where metal contacts pressure-treated wood or other corrosive substrates, protect against galvanic action or corrosion by painting contact surfaces with bituminous coating or by other permanent separation as recommended by sheet metal manufacturer or cited sheet metal standard.

a. Coat concealed side of sheet metal flashing and trim with bituminous coating where flashing and trim contact wood, ferrous metal, or cementitious construction.

b. Underlayment: Where installing sheet metal flashing and trim directly on Cementitious or wood substrates, install underlayment and cover with slip sheet.

3. Expansion Provisions: Provide for thermal expansion of exposed flashing and trim. Space movement joints at maximum of 3 m (10 feet) with no joints within 600 mm (24 inches) of corner or intersection.

a. Form expansion joints of intermeshing…