10_FKNN152100_SOW_&_Specs.pdf

MAINE AIR NATIONAL GUARD

101st CIVIL ENGINEER SQUADRON (AMC)

106 ASHLEY AVENUE, SUITE 486

BANGOR, MAINE 04401-3051

REPLACE ROOF AT BUILDING 423

PROJECT NUMBER: FKNN152100

DATE: 18 DECEMBER 2017

FOR

UNITED STATES PROPERTY AND FISCAL OFFICES

MAINE NATIONAL GUARD

AUGUSTA, MAINE 04333

REPLACE ROOF AT BUILDING 423

PROJECT No. FKNN152100

PART 1

GENERAL:

1.1 LOCATION: The location is Building 423, at Maine Air National Guard (ANG), Bangor

International Airport, Bangor, Maine 04401.

1.2 CONTRACTING OFFICER REPRESENTATIVE (COR): The 101st Civil Engineer Squadron provides the COR and all technical advice or assistance. The following individual is the designated COR for this project: Capt. Daniel Trembley.

1.3 GOVERNMENT FURNISHED MATERIALS: None.

1.4 SPECIFICATIONS: IBC 2012, ASCE 7-05 and ASCE 7-10, National Electrical Code, UL-916;

National Roofing Contractors Association Manual (NRCA), UFC 3-110-03 Roofing Standards, and Air National Guard Engineering Technical Letter (ANGETL) 15-01-06 Roof Design Guidance.

1.5 COMMENCEMENT AND COMPLETION OF WORK: The Contractor shall be required to commence work under this contract within thirty (30) calendar days after the date the contractor receives notice to proceed, execute the work diligently and complete the entire work ready for use not later than sixty (60) calendar days after the Notice to proceed.

1.6 SPECIAL PROVISIONS: None

1.7 SUBMITTALS: Provide electronic submittals to the contracting officer (KO) for review and approval. For this project, the following submittals shall be submitted:

1.7.1 Project Schedule

1.7.2 Warranty: Roof Warranties shall be submitted for review and approval prior to material ordering.

The General Contractor shall also submit a letter with the roofing warranty, stating that they have reviewed the warranty and the requirements of this document and specification 075323 para 1.09, and that the roof warranty is in compliance with the requirements of these documents.

1.7.3 Submit a copy of the roof installer’s certification by the manufacturer.

1.7.4 Manufacturer’s complete set of shop drawings to include all details for all roof components.

Details to include but not limited to roof drains, coping cap, perimeter edge flashing, vent flashing, scuppers, and equipment curb flashing.

1.7.5 Manufacturer’s installation instructions.

1.7.6 Adhesives.

1.7.7 EPDM Membrane and flashing materials.

1.7.8 Base flashing and membrane terminations.

1.7.9 Rigid insulation with minimum ¼ inch per foot, and tapered cricket slopes to match existing.

1.7.10 Roof drains.

1.7.11 Roof Plan showing orientation of steel roof deck and orientation of roofing, insulation and cricket insulation as required minimum ¼ inch per foot slope, fasteners, spacing, patterns for mechanically fastened roofing materials.

1.7.12 Temporary protection plan to protect the building and interior equipment.

1.7.13 Manufacturer’s installation instructions.

1.7.14 Submit items and material samples listed in the attached specification 075323.

1.7.15 Thermographic images and plan view identifying areas of saturation.

PART 2

PRODUCTS:

2.1 Products need to conform to the following:

2.2 All products shall be in accordance with the Buy American Act.

2.3 Attached specifications

2.4 Products shall all be from the same manufacture or approved by the roof manufacturer as part of their warranty coverage on the complete roof system.

PART 3

EXECUTION:

SUMMARY OF WORK: All work shall be per specification and drawings. The work to be completed on this project consists of (but is not limited to) providing all plant, labor and materials to provide a complete roofing system installed in accordance with the manufacturer’s 30 year warrantied system.

3.1 Perform infrared thermal inspection of entire roof, confirm areas of saturation with moisture meter.

Provide thermographic images. Locate areas of saturation on plan view provided by Government.

3.2 Demolishing and disposal of the existing Bldg. 423 (Hypalon membrane) roofing system, including but not limited to membrane, ballast material (if applicable), blocking in need of replacement, and metal flashing.

3.3 Add new insulation to the existing insulation to achieve an average R-36 value. Install additional wood blocking as necessary for the added insulation thickness. Install new cover board as specified by the manufacturer’s warrantied system. The cover board shall be fully adhered to the insulation.

3.4 (ABI #1) Replace existing insulation with new rigid roof insulation in two layers with a minimum value of R-36. Install tapered crickets as required to maintain a minimum ¼ inch per foot slope to drains.

Stagger all joints between layers by at least 12”. Install new wood blocking to match the required insulation thickness, if required. Install fiber edge strips and fiber cants. Install high density underlayment.

3.5 Install (6) new roof drain inserts.

3.6 Install new 90 mil EPDM fully adhered roof system in accordance with the manufacturers 30 year warranty. All roof details shall be install by a manufacturer’s certified installer, and shall comply with the manufacturer standard details.

3.7 Install new sheet metal coping cap, parapet cap and perimeter sheet metal flashing and trim.

Including counter flashing, equipment flashing, drain scuppers, and down spouts. Include all flashing required to make the roof system complete and in accordance with the manufacturers requirements for a 30 year warranty.

3.8 The contractor shall design the complete roof systems for wind loads complying with IBC 2012, and ASCE 7-05 and 7-10.

3.9 Remove old caulking and reseal the caulked joint between the front metal canopy and the stucco wall at the front entrance to the building.

3.10 Remove and reinstall the antenna and bracket for the Monaco fire alarm system on the North wall at the perimeter flashing elevation.

3.11 Special precautions shall be taken by the contractor to ensure a water tight roof is maintained during construction above all rooms and more specifically rooms identified by the building managers due to the interior communications and computer equipment. The contractor and the government representatives shall meet to discuss any additional measures required, for example covering the equipment to protect it from dust, debris and water damage. Discuss means of protecting the equipment without causing overheating or damage to the equipment. The contractor shall furnish and install any required materials, clean (new) pvc coated protective sheet, leak diverters or poly tarps and install as directed by the government’s representatives responsible for the communication or special equipment. A 24 hour emergency phone number shall be provided to the Building Manager in case of a roof leak occurs during off hours nights or weekend.

3.12 The contractor is responsible to obtain a base fire permit each day there is any use of any open flame on site. Examples are torch work, welding, and a hot kettle running. A fire permit shall be obtained by contacting the base fire department 207-404-7235.

3.13 The contractor shall guarantee at the end of each work period on a re-roofing project, the existing and new roof system shall be completely sealed from moisture intrusion and able to withstand a head of water. Existing drains must remain in working order until the new roof and associated drainage system is completely functional.

3.14 All work shall be in accordance with the attached specification section 075323, and 076200. Install in accordance with the manufactures specification to meet the specified warranty.

3.15 Contractor shall include on site quality control inspections, with written reports by the manufacturer’s technical representative to be onsite at least 4 days for a minimum of 4 hours per day during the construction period. Inspections shall be schedule at the beginning, middle and end of the construction. Site reports shall include one visit during the final inspection of the roof.

3.16 Warranty 30 year: The roofing system shall be provided with a fully executed minimum 30 year non-prorated manufacturer’s warranty for both weather tightness and materials to include finish. Repairs required due to a breach in the warranties, to include material and labor, shall be covered by the warranty without any additional cost to the Government.

PART 5

ATTACHMENTS:

4.1 Building 423 Roof Plan

4.2 Specification Section 075323 Adhered EPDM Roofing

4.3 Specification Section 076200 Sheet Metal Flashing and Trim

4.4 As-Built Drawing B423 A-2 Roof Plan and Details (For reference only)

4.5 As-Built Drawing B423 S-3 Roof Framing Plan (For reference only)

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PROJECT # FKNN152100

SECTION 075323

FULLY ADHERED EPDM ROOFING SYSTEM

PART 1 GENERAL

1.01 RELATED WORK SPECIFIED ELSEWHERE

A. Flashing and Trim: Section 076200.

1.02 DEFINITIONS

A. Company Field Advisor; An individual meeting the requirements of either subparagraph below:

1. An employee of the company producing or manufacturing the system (or the company which lists and markets the primary components of the system under their name) who is certified in writing by the company to be technically qualified in design, installation, and servicing of the required products, and has experience in the installation of the required products. Personnel involved solely in sales do not qualify. Employees of the Contractor or the Subcontractor do not qualify.

2. An individual employed by an organization (other than the company producing or manufacturing the system), certified in writing by the company producing or manufacturing the system, that the individual is technically qualified in design, installation and servicing of the required products and is capable to act as company field advisor in their behalf, and has experience in the installation of the required products. Personnel involved solely in sales do not qualify. Employees of the Contractor or the Subcontractor do not qualify.

1.03 ROOF SYSTEM DESIGN PERFORMANCE DESCRIPTION

A. Roof System Design: Tested by a qualified testing agency to resist the following uplift pressures:

1. Corner Uplift Pressure 115.2 lbs/sq.ft.

2. Perimeter Uplift Pressure 84.5 lbf/sq.ft.

3. Field-of-Roof Uplift 53.8 lbf/sq.ft.

4. Fire / Wind Classification : Class 1A-120

5. Hail - Resistance Rating SH.

B. Adhered EPDM System: EPDM fully adhered coverboard with bonding adhesive, and the insulation and/or underlayment board mechanically attached to the structural deck.

1.04 SUBMITTALS

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A. “Named Brand” Submittals: Submit for approval, one of the “named brand” roofing systems and any proposed deviations from the Contract Documents.

Submit Product Data, Samples, Applicator’s Certification, and Material’s Certification, installation instructions and complete shop drawings showing the roof membrane layout , drains, scuppers , crickets, coping , perimeter flashing, and associated details to the Contracting Officer.

B. “Or Equal” Submittals: Submit for approval, product data, samples, quality control submittals, and any proposed deviations from the Contract Documents.

C. Approvals: Approval of a “named brand” or “or equal” roofing system is with the understanding that the requirements of the Contract Documents will be met.

Approval of a roofing system does not constitute blanket approval of the manufacturer’s installation specifications or details.

1. If the requirements of the Contract Documents differ from or are more stringent than the requirements of the approved roof system manufacturer, the Contract Documents have precedence over the requirements of the approved manufacturer.

D. Proposed Deviations from the Contract Documents: Submit for approval proposed deviations when the roofing system is submitted. Proposed deviations submitted after the roofing system has been approved will not be considered for approval and may be cause for rejection of the previously approved roofing system.

1. Manufacturer’s Details: Do not use or submit manufacturer’s standard details unless there is an omission or a proposed deviation from the Contract Documents. In such instances, submit the revised detail for approval. Label each revised detail with the words “PROPOSED

DEVIATION”.

2. Manufacturer’s Specifications and Installation Instructions: When there is a proposed deviation from the Contract Documents, submit the proposed deviation for approval. Label each specification and instruction revision with the words “PROPOSED DEVIATION”.

E. Product Data: Catalog sheets, specifications, installation instructions for each material specified.

F. Samples:

1. Sheet Membrane: One 6 inch square piece.

2. Sheet Flashing: One 6 inch square piece.

3. EPDM Cover Tape: One 12 inch square piece.

4. Inseam Tape: One piece 3 inches wide by 12 inches long.

5. Fasteners: Two each type.

6. Insulation: One 3 inch square piece.

7. Coverboard: One 3 inch square piece.

8. Underlayment Board: One 3 inch square piece.

9. Self-Adhesive Vapor Retarder: One 6 inch square piece.

G. Quality Control Submittals:

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1. Fire Hazard Certification: Written certification that the roof system, including the specific insulation, has been tested in conjunction with the type of structural roof deck and roof slope applicable to the project and has achieved an Underwriters Laboratories UL 790 Class A external fire resistance rating.

a. Acceptable Certification: Letter from Underwriters

Laboratories, or a copy of the Underwriters Laboratories classification listing for the roofing system.

2. Wind Uplift Certification: Submit written certification that the roof system, including the specific insulation and fasteners, has been tested in conjunction with the type of structural roof deck applicable to this project, and has achieved a Factory Mutual Class 1-90 wind uplift rating.

a. Acceptable Certification: Letter from Factory Mutual, or a copy of the Factory Mutual Approval Report for the roofing system.

3. Material Certification: Written certification from the roofing membrane manufacturer certifying that the insulation, insulation fasteners (if any), flashings and accessory products provided by the membrane manufacturer are approved for use with the roofing system and is included in the full system warranty.

4. Membrane Manufacturer’s Certification:

a. Written certification that the manufacturer has been actively marketing the submitted system for the past 5 years.

b. Names and addresses of 5 previous EPDM roofing projects installed within the past 5 years. Include the type and size of each project, and name and telephone number of a contact person at the project locations.

5. Installer’s Certification:

a. Written certification from the membrane manufacturer certifying that the installer is licensed or approved to install the roof system.

b. Names, addresses, and telephone numbers of 3 buildings where the installer has installed EPDM sheet membrane roof systems that have had the manufacturer’s warranty issued. Include the types of EPDM systems installed, the manufacturer’s names, and the warranty numbers.

c. Written certification that the job supervisor or crew chief and at least one other member of the roofing crew have installed at least 3 EPDM sheet membrane roof systems and are thoroughly familiar with all aspects of the installation.

6. Warranty: Sample copy of the full system warranty specified.

H. LEED Design Submittals: ( N/A for this contract )

1. MR Credit 4.1 and MR Credit 4.2: Identify manufacturer’s name, the percentage of post-consumer recycled content by weight, the pre-consumer recycled content by weight, and the cost of the product.

2. MR Credit 5.1 and MR Credit 5.2: Identify source, cost, and the fraction by weight that is considered regional.

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3. MR Credit 6: Identify the manufacturer’s name, the rapidly renewable content of the product submitted, and the cost of the product.

I. Contract Closeout Submittals:

1. Warranty: Warranties as specified.

J. Material Safety Data Sheets (MSDS): Do not include the MSDS in the roof submittal package. Submit the MSDS to the Contracting Officer as a separate submittal number.

K. Submit all items, except contract closeout submittals and MSDS, at one time as a complete package. Partial submittals will not be considered.

1.05 QUALITY ASSURANCE

A. Fire Hazard Classification: The sheet membrane roof system shall have an Underwriters Laboratories Class A External Fire Resistance rating, as determined by tests conducted in conformity with UL-790 Class A“Tests for Fire Resistance of Roof Covering Materials”.

1. The roof system, which includes a specific generic type of insulation, and in some instances a specific name brand insulation, shall have been tested in conjunction with the type of structural roof deck and roof slope applicable to the project.

B. Material Classification Identification: Materials delivered to the site that are a component of the roofing system shall bear the UL Classification mark.

C. Membrane Manufacturer’s Qualifications:

1. The manufacturer shall have been actively marketing an EPDM roof system in the United States for a minimum of 5 years.

2. The manufacturer shall have the technical expertise and qualified technical representatives to resolve questions or problems that may arise both during and after the Work is completed.

3. The manufacturer shall furnish the names, addresses, and telephone numbers of at least 5 previous projects of comparable size, scope, and complexity as the Work of this Section.

4. The manufacturer shall require that the roof system be installed by a licensed or approved applicator.

D. Installer’s Qualifications: The installation of the roofing system shall be performed by an installer licensed or approved by the membrane manufacturer.

The installer shall have previously installed at least 5 EPDM sheet membrane systems for which the manufacturer’s warranty was issued. The roofing company shall, upon request, provide evidence of having a minimum of ten years of successful experience installing single-ply roofing systems and having installed at least ten roofing applications of equal size and scope.

1. Workers: The supervisor or crew chief and at least one other member of the roofing crew shall have installed at least 5 EPDM sheet membrane roof systems and shall be thoroughly familiar with all aspects of the installation.

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E. Pre-Installation Conference: Before the roofing work is scheduled to commence, a conference will be called by the ANG’s Contracting Officer at the site for the purpose of reviewing the Drawings and the Specifications and discussing requirements for the Work. The conference shall be attended by the Contractor, the authorized roofing applicator, and the Company Field Advisor.

1.06 ROOFING MANUFACTURER’S COMPANY FIELD ADVISOR

A. The manufacturer of the roofing system, issuing the final system guarantee (Warranty) on this roofing project, must supply a Company Field Advisor, as a technical representative, with the following minimum qualifications:

1. Documentation of 5 years of field experience on the same type of roofing system.

2. Documentation of 5 projects where role was a Company Field Advisor;

include contact names and phone numbers for each project.

3. Documentation of attendance at a roof specific instructional seminar within the last two years.

B. Secure the services of the Company Field Advisor for a minimum of 4 days at a minimum of 4 hours per day at the beginning , middle and end of the project to inspect the workmanship of the roofing system certified installer.

C. Company Field Advisor Duties and Responsibilities:

1. Become familiar with the Contract Documents and approved submittals prior to the pre-roofing conference.

2. Attend the pre-roofing conference and the beginning of the actual membrane installation for the purpose of:

a. Rendering technical assistance to the Contractor regarding installation procedures of the system.

b. Familiarizing the Contracting Officer and COR with all aspects of the system including inspection techniques.

c. Answering questions that might arise.

3. Attend each bi-weekly meeting.

4. Be objective, unbiased and impartial in each inspection, recommendation, conversation, action and written report.

a. Inspect the existing substrate, flashing, blocking, and related materials as being acceptable for the installation of the roofing system.

b. Ensure proper fastening patterns and fastener sizes of wood blocking, insulation, edge flashing, and related components.

5. Immediately report non-compliant conditions, if any, to the Contracting Officer and COR.

6. Provide to the Contracting Officer and COR a written report, submitted prior to leaving the Project Site each day the Company Field Advisor is present. Each daily written report shall contain at a minimum:

a. Date of report and inspection.

b. Weather conditions at the start, middle, and end of the work day.

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c. Work performed including Contractor activity, contractor crew size, supervisor’s name, area of activity, and progress and quality of the work as observed.

d. Discussions with Contractor regarding work anomalies and resolution.

e. Conditions that are not in compliance with the Contract documents. Include Photographs.

1) Continue documenting non-compliance issues in subsequent reports until the issue has been resolved.

Document resolution of non-compliance issues when resolved.

7. Report to the Contracting Officer and COR in writing failure or refusal of the Contractor to correct unacceptable practices called to the Contractor's attention.

8. Confirm, after completion of the roofing work and based on the Company Field Advisor’s inspections and tests, that the Company Field Advisor has observed no applications procedures in conflict with the specifications other than those that may have been previously reported and corrected.

1.07 DELIVERY, STORAGE, AND HANDLING

A. Delivery: Deliver materials to the site in the manufacturer’s labeled, unbroken containers.

B. Storage and Handling: Store materials in a dry, well-ventilated place protected from the weather.

1. Do not store materials so as to overload the deck or structural assembly.

2. Store all materials on raised platforms covered with properly secured breathable water resistant covers. Slit shrink wrapping to not permit condensation and cover with breathable tarp.

3. Remove all materials that become wet from the site.

4. Store volatile liquids in a separate storage building or trailer, or removed from the site at the end of each workday.

a. Store volatile liquids at temperatures recommended by the manufacturer.

5. Do not remove materials from factory packaging until ready for use.

6. Store adhesives, and sealants at temperatures between 60 degrees F and

80 degrees F.

1.08 PROJECT CONDITIONS

A. Unless otherwise directed, do not execute the work of this Section if the Director’s Representative is not present.

B. Do not execute the work of this Section unless the substrate is dry and free of dirt and debris.

C. Moisture Protection:

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1. Cover, seal or otherwise protect the roof and flashings so that water cannot accumulate or flow under completed portions. When and where necessary to accomplish this, provide temporary water cut-offs in accordance with the membrane manufacturer’s written specifications.

2. Limit the removal of existing materials to areas that can be completely re-roofed or temporarily protected within the same day. At the discretion of the Director’s Representative, a watertight built-up vapor retarder may be acceptable temporary protection for a maximum of 48 hours.

D. Do not smoke or use open flames near volatile materials.

1.09 WARRANTY

A. Warranty: Roof Warranties shall be submitted for review and approval prior to material ordering. The General Contractor shall submit a letter with the roofing warranty, stating that they have reviewed the warranty and the requirements of this document, and that the roof warranty is in compliance with the requirements of this document. Warranties with unreasonable exclusions will be disapproved. Roof warranties shall clearly explain the warranty claim process. It is the General Contractor’s responsibility to select a roofing system that meets the roofing requirements in this document & the contract documents, and to ensure the roof is installed to meet all the requirements of the roof warranties. A roof warranty that allows standards of installation below the requirements of this document will not override the requirements of this document; as stated previously it is the General Contractor’s responsibility to select a roofing system that will meet these requirements. Weather tightness warranties shall include penetrations and flashing.

a. Manufacturer’s Warranties: The roofing system shall be provided with a fully executed minimum 30 year non-prorated manufacturer’s warranty for both weather tightness and materials to include finish. Repairs required due to a breach in the warranties, to include material and labor, shall be covered by the warranty without any additional cost to the Government. Signatures on manufacturer’s warranties will include the manufacturer, the General Contractor, and the government representative (the contracting officer or a delegated representative). The Warranty shall be written such that the warranty will remain in affect between the manufacturer and the Government if the General Contractor goes out of business.

b. General Contractor’s Warranty: The roofing system shall be provided with a fully executed minimum 1-year non-prorated General Contractor’s weather tightness warranty.

Leaks during the 1 year period starting at acceptance shall be repaired by the General Contractor with no cost to the Government. This warranty shall be with the General Contractor and the Government.

PART 2 PRODUCTS

2.01 EPDM SHEET MEMBRANE, SHEET FLASHING, AND RELATED PRODUCTS

A. The EPDM sheet membrane shall be minimum 90 mils non reinforced , visually free of streaks, particles of foreign matter, undispersed raw material, pinholes, cracks, tears, and shall be uniform in thickness. When unrolled in a relaxed position, the membrane shall be free of wrinkles, distortions, and blisters.

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B. EPDM (Ethylene, Propylene, Diene, Monomer) Sheet Membrane:

1. The following as required to achieve a UL Class A external fire rating for the slope of the roof system:

a. Minimum thickness shall be 90 mil EPDM non reinforced membrane.

2. The following systems are listed in the UL Materials Directory as having a UL Class A Exterior Fire Rating when installed with the type of deck, insulation, and roof slope applicable to this Project.

a. “Sure Seal Adhered Roofing System” by Carlisle Syntec Systems, P.O. Box 7000, Carlisle, PA 17013, (800) 479-6832, www.carlisle-syntec.com

b. “GenFlex Fully Adhered Roofing System”, by Genflex Roofing Systems, P.O. Box 637, Maumee, OH 43537, (800) 443-4272, www.genflex.com

c. “VersiGard Fully Adhered Roofing System” by Versico Incorporated, P.O. Box 6424, Akron, OH 44312, (800) 992- 7663, www.versico.com

d. “Adhered Rubbergard Platinum” by Firestone Building Products Company, 525 Congressional Blvd., Carmel, IN 46032, (800) 428-4442, www.firestonebpco.com

e. “UltraGuard Adhered Roofing System” by Manville Roofing Systems, P.O. Box 5108, Denver, CO 80217-5108, (800) 654- 3103, www.jm.com

C. Sheet Flashing: Membrane manufacturer’s cured and uncured EPDM as specified.

D. Inseam Tape: Membrane manufacturer’s minimum 6 inch wide self adhering tape consisting of cured butyl double sided adhesive tape, for inseam splicing of rubber to rubber.

E. Cured EPDM Cover Tape: Membrane manufacturer’s minimum 6 inch wide self adhering tape consisting of cured butyl adhesive laminated to cured EPDM, for installation over EPDM seams, cuts in field membrane, and for stripping in metal work.

F. Uncured EPDM Cover Tape: Membrane manufacturer’s minimum 6 inch wide self adhesive tape, consisting of, cured butyl adhesive laminated to uncured EPDM, for installation over base flashing corners, inside and outside corners, pipe flashings and other detail work.

G. Related Products: Membrane manufacturer’s bonding adhesive, splicing cement, lap sealant, water cut-off mastic, nite seal, pourable sealer, splice joint cleaning agent and primer, insulation adhesive, and all other products related to the sheet membrane system. All adhesives, primers, and cleaners must comply with the current State and Federal VOC OTC regulations.

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2.02 INSULATION

A. The total insulation thermal resistance averaged over the entire roof area shall produce an R-36.

B. The indicated insulation thickness is nominal, allowing for differences in insulating properties of various name brands. Minor variation in thickness is acceptable, provided the specified thermal value and other requirements of this Contract are met.

C. Approval of the insulation is contingent upon certification by the membrane manufacturer that the insulation is approved for use with the specified roof system and that the insulation is included in the full system warranty specified.

D. Uniform Thickness isocyanurate insulation and Tapered isocyanurate insulation:

Membrane manufacturers approved closed cell isocyanurate foam core insulation skinned on both sides with factory applied fiberglass facers suitable for installation with hot asphalt and cold adhesive. ASTM C1289, Type II, Class 1, Grade 2 felt or glass-fiber mat facer on both side. UL Classified and Factory Mutual Approved for direct application over steel deck.

1. Board Size:

a. Adhesively Secured Insulation: Maximum board size 4 feet x 4 feet.

b. Mechanically Fastened Insulation: Minimum board size 4 feet x 8 feet.

E. Tapered Insulation System: Membrane manufacturer’s approved 1/4 inch per foot factory tapered polyisocyanurate insulation.

F. Tapered Cricket System: Membrane manufacturer’s approved 1/2 inch per foot factory tapered isocyanurate insulation conforming to ASTM C 1289.

G. Tapered Edge Strips: Membrane manufacturer’s approved 1/2 inch per foot factory tapered isocyanurate insulation conforming to ASTM C 1289.

2.03 COVERBOARD Adhered Only. (Not Mechanically Fastened.)

A. Coverboard: 1/2 inch thick gypsum roof board composed of a silicone treated gypsum core with fiberglass facers.

1. Acceptable Product: “Dens-Deck” by Georgia-Pacific Corporation, Gypsum Division, 133 Peachtree Street, N.E., Atlanta, GA 30303, (800) 225-6119, www.gp.com

2. Securock Roof Board, 3/8 inch thick by USG, 550 West Adams Street, Chicago, IL 60661-3676, (312)-0436-4000, www.usg.com.

3. Adhesively Attached Coverboard: Maximum board size 4 feet x 4 feet.

4. 1/2 " Isogard by Firestone

2.04 UNDERLAYMENT BOARD

1006017491K Underline

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A. Underlayment Board: 1/2 inch thick gypsum roof board composed of a silicone treated gypsum core with fiberglass facers.

1. Acceptable Product: “Dens-Deck” by Georgia-Pacific Corporation, Gypsum Division, 2861 Miller Road, Decatur, GA 30035, (800) 225- 6119, www.gp.com

2. Securock Roof Board, 3/8 inch thick by USG, 550 West Adams Street, Chicago, IL 60661-3676, (312)-0436-4000, www.usg.com.

3. Adhesively Attached Underlayment Board: Maximum board size 4 feet x 4 feet.

4. Mechanically Attached Underlayment Board: Minimum board size 4 feet x 8 feet.

2.05 FASTENERS

A. Insulation and Membrane Fasteners: Approval of fasteners is contingent upon certification by the membrane manufacturer that the fasteners are approved for use with the specified roof system and that the fasteners are included in the full system warranty specified.

1. Wood Decks: Membrane manufacturer and Factory Mutual approved, hardened, self-tapping, anti-backout, Phillips pan head screws with round, square or hexagonal steel stress plates. Plate size as recommended by the manufacturer.

a. Minimum penetration one inch, minimum pull out resistance from deck 360 pounds unless specified otherwise by the membrane manufacturer.

2. Steel Decks: Membrane manufacturer and Factory Mutual approved, hardened, self-tapping, anti-backout, Phillips pan head screws with round, square or hexagonal steel stress plates. Plate size as recommended by the membrane manufacturer.

a. Minimum penetration 1 inch, minimum pull out resistance from deck 400 pounds unless specified otherwise by the membrane manufacturer.

3. Concrete Decks: Membrane manufacturer and Factory Mutual approved;

hardened, anti-backout, Phillips pan head screws with round, square or hexagonal steel stress plates; or hammer driven spikes with deformed shanks and round, square, or hexagonal steel stress plates. Plate size as recommended by the membrane manufacturer.

a. Minimum penetration 1inch, minimum pull out resistance from deck 400 pounds unless specified otherwise by the membrane manufacturer.

4. Structural Wood Fiber Decks/Gypsum Decks/Lightweight Concrete Decks: Membrane manufacturer and Factory Mutual approved, non-metallic, anti-backout, reinforced polymer auger fastener with round, square or hexagonal steel stress plates or a metal fastener specifically designed for light weight decks.

a. Penetration Into Deck: Minimum 1-1/2 inches.

b. Structural Wood Fiber Decks: Minimum pullout resistance 300 pounds.

c. Gypsum Decks: Minimum pullout resistance 350 pounds.

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d. Lightweight Concrete Decks: Minimum pullout resistance 350 pounds.

B. Base Flashing Fasteners (use along top edge of base, beneath in-wall cap flashings):

1. Concrete and/or Masonry Surfaces: Hardened masonry nails or zinc alloy hammer driven expansion anchors with stainless steel drive pins through 1 inch minimum sheet metal discs.

2. Sheet Metal Surfaces: Hardened, self tapping, #10 sheet metal screws through 1 inch minimum sheet metal discs.

3. Wood Surfaces: Hot dipped galvanized roofing nails with minimum 3/8 inch diameter head.

C. Termination Bar and Fasteners:

1. Termination Bar: Factory fabricated one inch wide x .098 inches thick mill finish extruded aluminum pre-punched 6” on center with a caulking and stiffening flange, as provided by the membrane manufacturer.

2. Fasteners:

a. Concrete Or Masonry Surfaces: Slotted hex washer head masonry screws or zinc alloy hammer driven expansion anchors.

Length as required to securely hold the compression bar tight against the wall surface.

b. Wood and Sheet Metal Surfaces: Hardened, self-tapping, slotted hex washer head screws.

D. EPDM Anchor Strips: 6 inch wide reinforced EPDM.

2.06 BITUMEN

A. Bitumen: Steep asphalt; ASTM D 312, Type III.

2.07 INSULATION ADHESIVE

A. Coverboard, Insulation And Underlayment Board Adhesive:

1. Two-part, low rise polyurethane foam adhesive, supplied by the membrane manufacturer to satisfy warranty requirements.

2. One-part, solvent-free, moisture curing, cold fluid-applied, bituminous-urethane adhesive, supplied by the membrane manufacturer to satisfy warranty requirements.

2.08 MISCELLANEOUS MATERIALS

A. Pipe Flashing: Membrane manufacturer’s cured pre-molded EPDM pipe boot.

B. Compression Clamp (for factory fabricated flashings only): Stainless steel or cadmium plated steel worm drive clamp.

C. Expansion Joint Tube: Compressible neoprene or polyethylene tube, twice the diameter of the width of the expansion joint.

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D. Walkway, Protection Pads: Manufacturer’s nonporous, pressure sensitive, solid molded rubber walkway pads, 30 inch by 30 inch with factory rounded corners.

E. Retro-Fit Roof Drains: Metal roof drains designed specifically for installation into an existing roof drain and conductor pipe. The drain shall be formed with an expandable drop tube or with an expandable rubber boot to form a watertight seal between the drop tube and the existing conductor pipe. The drain shall also have a large flashing flange, clamping ring and an aluminum strainer.

1. Acceptable Products:

a. “Coppertight Roof Drain” by Marathon Roofing Products Inc.

367 Nagel Drive, Buffalo, NY, 14225-4732, (800) 828-8424, www.marathondrains.com

b. “RAC Insert Drain System” by OMG Inc., 153 Bowles Road, Agawam, MA, 01001 (800) 633-3800, www.olyfast.com

c. “Portals Plus Reroof Drain” by Portals Plus, Inc., 639 N. Thomas Drive, Bensenville, IL 60106 (800) PPI-5240, www.portalsplus.com

d. Membrane manufacturer’s standard insert drain.

F. Roof Drain Membrane Clamping Collar: Universal cast iron membrane clamping collar and mounting hardware.

1. Acceptable Products:

a. Universal Membrane Clamping Collar Model No. 1002 by Jay R. Smith Mfg. Co., P.O. Box 3237, Montgomery, AL 36109, 334-277-8520, www.jrsmith.com

b. Universal clamping ring, By Marathon Roofing Products Inc.

367 Nagel Drive, Buffalo, NY, 14225-4732, (800) 828-8424, www.marathondrains.com

G. Pitch Pocket Filler Material:

1. Mortar: ASTM C 270, Type S.

2. Elastomeric Cement: Non-sag, cold applied, trowel grade, single component rubber elastomer with minimum elongation of 400 percent, supplied by the membrane manufacturer to satisfy warranty requirements.

H. Sealant: One-part, low modulus, silicone sealant: Dow Corning’s 790, General Electric’s Silpruf, Pecora’s 864, or Tremco’s TremPro 646.

2.09 MATERIALS FOR VAPOR RETARDER

A. Vapor retarder to have a minimum perm rating of 0.05 as per ASTM E96. Vapor retarder must be acceptable as a temporary roof and have a minimum 90 day exposure rating.

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B. Materials For Repair Of Existing Vapor Retarder:

1. Primer: Quick drying asphalt primer; ASTM D 41.

2. Asphalt Fiberglass Base Sheet: Non porous asphalt coated glass fiber base sheet: ASTM 4601-98, Type IV.

3. Plastic Roof Cement: Non-asbestos bearing, fibrated, flashing grade;

ASTM D 4586.

4. Bitumen: Steep asphalt; ASTM D 312, Type III.

5. Interply Adhesive: Membrane manufacturer’s cold process solvent based modified adhesive.

a. Asphalt content: 42 percent ASTM D 4479-93

b. Density: 8 lbs/gal ASTM D 1475-90

c. Asbestos content: None.

C. Materials For Vapor Retarder and Underlayment On Steel Decks:

1. Fasteners: Membrane manufacturer and Factory Mutual approved, hardened, self-tapping, Phillips truss head screws with round, square or hexagonal steel stress plates. Plate size as recommended by the membrane manufacturer.

a. Minimum penetration 1/2 inch, minimum pull out resistance from deck 400 pounds unless specified otherwise by the membrane manufacturer.

2. Underlayment Board: 1/2 inch thick gypsum roof board composed of a silicone treated gypsum core with fiberglass facers

3. Steep Asphalt: ASTM D 312, Type III.

4. Interply Adhesive: Membrane manufacturer’s cold process solvent based modified adhesive. Asphalt content: 42 percent ASTM D 4479-93.

5. Asphalt Fiberglass Base Sheet: Non porous asphalt coated glass fiber base sheet: ASTM 4601-98, Type IV.

D. Materials For Vapor Retarder Over Concrete Decks:

1. Primer: Quick drying asphalt primer; ASTM D 41.

2. Bitumen: Steep asphalt; ASTM D 312, Type III.

3. Interply Adhesive: Membrane manufacturer’s cold process modified adhesive. Asphalt content: 42 percent ASTM D 4479-93.

4. Asphalt Fiberglass Base Sheet: Non porous asphalt coated glass fiber base sheet: ASTM 4601-98, Type IV.

E. Materials For Vapor Retarder On Wood, Structural Wood Fiber Decks, Gypsum Decks and Lightweight Concrete Fill:

1. Fasteners for securing to wood decks: Annular ring roofing nails with one inch solid cap, “Cap Nail” by Simplex Nails Inc., 104 Swett Avenue, Americas, GA 31709, (800) 328-0857, www.simplexnails.com

2. Fasteners for securing to structural wood fiber decks: “Tube Lok Nail” by Simplex Nails, Inc., Americas, GA 31709, (800) 328-0857, simplexnails.com

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3. Fasteners for securing to gypsum decks and lightweight fill: “Tube-Lok Nail” by Simplex Nails, Inc., 104 Swett Avenue, Americus, GA 31709,

(912) 924-2767.

4. Rosin Paper: Minimum weight 4 pounds per square.

5. Bitumen: Steep Asphalt: ASTM D 312, Type III.

6. Interply Adhesive: Membrane manufacturer’s cold process modified adhesive. Asphalt content: 42 percent ASTM D 4479-93.

7. Asphalt Fiberglass Base Sheet: Non porous asphalt coated glass fiber base sheet: ASTM 4601-98, Type IV.

F. Self-Adhering Vapor Retarder:

1. Composite membrane 40-mil thick, consisting of a minimum 32-mils of self-adhering rubberized asphalt laminated to an 8-mil polyester fabric, or 5 mil skid resistant polyethylene film conforming to ASTM D 412, ASTM D 146 and ASTME-154.

a. Primer: Manufacturer’s recommended primer.

PART 3 EXECUTION

3.01 SURFACE PREPARATION

A. Ensure roof drain strainers are in place and secured during removal of insulation and other debris. Provide cast iron strainers where existing strainers are missing.

Do not allow removal debris to enter drains.

B. Cleaning: Before the roofing installation commences, sweep and/or vacuum all surfaces as required to remove all dirt, dust, loose aggregate, foreign matter, and debris left from removals of existing roofing.

3.02 PREPARATION

A. Testing Existing Roof Drains and Conductor Pipes: Before commencing with the Work of this Section, water test existing roof drains and conductor pipes with the COR present and submit a written report to the Contracting Officer and CO Representative (COR) indicating which drains or conductors, if any, are not functioning properly.

B. Testing Pull Out Resistance of Fasteners: Before commencing with the roofing work, in the presence of the Contracting Officers and CO Representative, conduct fastener pull out tests to determine if the pull out values meet the requirements of the Contract Documents and the membrane manufacturer.

1. Conduct the tests at representative locations and/or where selected by the

CO Representative as follows:

a. Up to 5,000 square feet: 3 tests.

b. 5,000 to 10,000 square feet: 6 tests.

c. 10,000 to 50,000 square feet: 10 tests.

d. 50,000 to 100,000 square feet: 20 tests.

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2. Patch holes at the test locations.

3. Do not proceed with the roofing work if the pull out resistance of the fasteners is less than specified in this Section.

C. Patching Existing Vapor Retarder: Remove loose and/or deteriorated portions of the existing vapor retarder. Patch defective areas with fiberglass felt embedded in and coated with asphalt plastic roof cement. Extend the patch a minimum of 12 inches beyond the defect on all sides.

D. Preparing Existing Roof Membrane:

1. Gravel Surfaced Roofs: Remove loose aggregate surfacing, dirt, debris and surface moisture by power sweeping and vacuuming. Only firmly bonded gravel may be left in place. Remove high spots of the gravel to produce a reasonably level and smooth surface.

2. Smooth Surface Roofs: Remove dirt, debris, and surface moisture.

3. Cut open blisters so they lay flat. Where blisters will not lay flat, cut off raised or loose portions.

4. Patch holes, splits or cracks that extend down to the existing insulation or the deck.

5. Where shown and directed cut out the existing roofing membrane and remove wet insulation. Fill the void left by the removals, with insulation to match the existing thickness.

3.03 HEATING BITUMEN

A. Strictly regulate the heating process for positive temperature control by means of an automatic thermostatic control of an approved type. Kettles or tankers shall be the immersion tube type, fired by liquid LP gas, and shall have 100 percent safety shutoff.

B. Equip each kettle or tanker with a recording thermometer that will graphically indicate and record on a chart the maximum and minimum temperatures to which materials have been heated. Recording thermometers shall be capable of accurately recording temperatures as high as 600 degrees F and as low as 0 degrees F. The thermometers shall be properly maintained at all times. Kettles or tankers without recording thermometers in good working conditions shall not be used. At the end of each workday, turn the chart from the thermometer on each kettle or tanker over to the CO Representative. If any bitumen is overheated, remove it from the site in the presence of the CO Representative. If any underheated or overheated bitumen has been applied on the roof, remove that portion of the roof.

C. Do not locate heating kettles on the roof. Do not locate with in 100ft of fuel tanks or the buildings fresh air intakes vents. Move hot asphalt onto roofs with hot tanks 55 gallon maximum. Obtain a ANG Base / Fire Department fire permit each day the kettle is operated.

D. Heating Asphalt:

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1. Heat the bitumen in accordance with the Equiviscous Temperature information furnished by the bitumen manufacturer for that specific run of bitumen.

2. In no case shall the asphalt be heated to or above the actual COC Flash Point (ANSI/ASTM D 92); or the finished blowing temperature for more than 4 hours.

3. Maintain the temperature of the bitumen at the point of application within the Equiviscous Temperature Range. Use insulated pipes, buckets, luggers, and other insulated roofers equipment as required by the field conditions.

4. If the Equiviscous Temperature information is not furnished by the bitumen manufacturer, heat the bitumen as follows:

a. Steep Asphalt, Type III: Do not heat the asphalt above 500 degrees F. The temperature at the point of application shall be between 375 degrees F and 475 degrees F.

3.04 INSTALLING UNDERLAYMENT BOARD

A. Install underlayment board over all combustible decks.

1. Steel Decks: Install underlayment board so that the long dimensions, if rectangular, bear directly on bearing surfaces or top flanges. Do not allow edges of boards to cantilever over open steel deck flutes. Stagger end joints. Butt edges and ends snugly.

B. Installing Hot Mopped Underlayment Board:

1. Install the underlayment board over the deck with the long joints running in a continuous straight line with end joints staggered. Butt edges snugly so there are no gaps between the boards.

2. Set each board in a full hot mopping of Type III asphalt applied at the rate of 30 pounds per square. Press each board into the hot bitumen to a firm and uniform bearing.

C. Installing Underlayment Board With Adhesive:

1. Clean dust and debris off of existing metal deck to ensure proper adhesive attachment. Install the underlayment board over the deck with the long joints running in a continuous straight line with end joints staggered. Butt edges and ends snugly so there are no gaps between the boards.

2. Set each board in serpentine ribbons of the adhesive applied at the manufacturer’s recommended rate, but no less than 6 inches on center.

Apply boards in accordance with manufacturer’s recommendations.

D. Installing Mechanically Fastened Underlayment Board:

1. Install the underlayment board over the deck with the long joints running in a continuous straight line with end joints staggered. Butt edges and ends snugly so there are no gaps between the boards.

2. Mechanically attach underlayment board in accordance with FM Loss prevention Data 1-28 including enhanced perimeter and corner fastener spacing. Set the fasteners with sufficient force to hold the insulation firmly against the deck surface. Check each fastener to insure that it is

075323 - 17 securely anchored to the deck, penetrating the top flute only. Do not allow the fastener to damage the underlayment board. Remove loose or defective fasteners.

3.05 INSTALLING VAPOR RETARDER

A. Installing Hot Asphalt Vapor Retarder On Underlayment Board Over Steel Decks:

1. Install the underlayment board as stated above.

2. Over the underlayment board install 2 plies of fiberglass felt. Install the felts shingle fashion. Lap the felts 19 inches over each preceding ply.

3. Embed each in a solid mopping of hot steep asphalt applied at the rate of

25 pounds per square. Broom the surface for complete embedment.

4. Embed each ply in interply adhesive applied to the substrate in accordance with the manufacturer’s printed instructions.

5. If insulation will not be installed the same day the vapor retarder is installed, apply a glaze coat of asphalt or adhesive over the vapor retarder.

B. Installing Vapor Retarder On Concrete Decks:

1. Apply asphalt primer to the concrete deck surface at the rate of one gallon per square or as recommended by the manufacturer, before application of vapor retarder.

2. Install 2 plies of asphalt fiberglass felt shingle fashion. Lap plies 19 inches over each preceding ply.

3. Embed each ply in a solid mopping of hot steep asphalt applied at the rate of 20 pounds per square. Broom in each ply for complete embedment.

C. Installing Hot Asphalt Vapor Retarder On Gypsum and Light Weight Concrete Decks:

1. Install one ply of asphalt fiberglass base sheet over the entire deck surface. Lap edges and ends a minimum of 2 inches.

2. Nail the base sheet to the deck with nails spaced 9 inches on center along edges and end laps. Place 2 additional rows of nails spaced 11 inches apart down the longitudinal center of each sheet. Stagger nails on 18-inch centers.

3. Adhere the base sheet to the deck with one-foot diameter spots of hot steep asphalt spaced 24 inches apart, or with nails spaced 24 inches apart.

4. Over the base sheet install one ply of fiberglass felt. Lap edges and ends 2 inches.

5. Embed the felt in a solid mopping of hot steep asphalt applied at the rate of 20 pounds per square. Broom the felts for complete embedment.

D. Installing Hot Vapor Retarder On Wood and Structural Wood Fiber Decks:

1. Install one ply of rosin paper over the deck. Lap edges and ends 2 inches and fasten with occasional nailing.

2. Install one ply of asphalt fiberglass base sheet. Lap plies 2 inches over each preceding ply.

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3. Nail the base sheet to the deck with nails spaced 9 inches on center along edges and end laps. Place 2 additional rows of nails spaced 11 inches apart down the longitudinal center of each sheet. Stagger nails on 18-inch centers.

4. Secure the base sheet to the deck with occasional nailing.

5. Over the base sheet install one ply of fiberglass felt. Lap edges and ends

2 inches.

6. Embed the felt in a solid mopping of hot steep asphalt applied at the rate of 20 pounds per square. Broom the felts for complete embedment.

E. Installing Self-Adhering Vapor Retarder On Underlayment:

1. Prime all surfaces of the underlayment board surfaces to receive the vapor retarder with the manufacturer’s recommended primer. Apply primer with a long nap roller at the applicable coverage rate. At 75 F allow primer to dry 1 hour minimum. Primer has a satisfactory cure when it will not transfer when touched. Reprime if area becomes dirty.

Apply the vapor retarder from low to high point, in a shingle fashion, so that…