Sioux City IA (SUX) RTR EPDM Roof Spec.SUX

CONTRACT SPECIFICATION

REPLACE ROOFING

SUX RTR Facility

SIOUX CITY, IOWA

08/28/2012

The following specifications and advisements constitute the working portion of the contract between the Contractor and the Federal Aviation Administration, an Agency of the Federal Government. The Contracting Officer (CO) assigned to this contract shall be the only individual with authority to speak for and contractually bind the FAA. All communications, authorizations, approvals, changes, modifications, etc. involving this contract shall be with and through the CO.

Any action not approved by the CO shall not bind the FAA.

Contracting Officers Technical Representative (COTR) - The Contracting Officer (CO) may assign a COTR to oversee the work on this project and act as a technical point of contact. A letter detailing the COTR's responsibilities and authority will be issued when a COTR is assigned.

Site Inspection – The Contractor should perform a field inspection prior to bid submission in order to have accurate information on the specific working conditions applicable at the site and to ascertain the correct type/amount of work to be performed. If the bidder chooses not to visit the site, they will nevertheless be charged with knowledge of conditions that a site inspection would have disclosed. A site visit for prospective bidders will be scheduled by the CO previous to the bid due date.

Special Roof Requirement - Provide manufacturer certification that the new roof system to be installed meets the requirements of section 1.04 Performance Requirements for 110 mph 3 second wind gust rating.

Work Hours – Work hours should be between 7 am and 5 pm, M-F and as agreed upon with the COTR previous to the start of work. Overtime/weekend work must be coordinated and approved at least 48 hours in advance with the COTR.

No restroom or water source is available at the site. The Contractor shall provide a Johnny-on-the-spot type portable restroom facility during performance of the contract.

Project Drawings The following drawings are included as part of the contract documents

Drawing Date Title

SUX-D-RTR-G001 8/14/12 Cover Sheet and Drawing List EPDM Single-Ply Membrane Roof RTR; Sioux City, IA

SUX-D-RTR-A001 8/14/12 Roof Plan and Details EPDM Single-Ply Membrane Roof RTR; Sioux City, IA

BID ITEMS: This contract will be bid as a roofing remediation/replacement project as per the following:

Main Bid - Remove existing roof; install new EPDM roofing system and gutters/downspouts.

The Contractor shall furnish all materials, labor, tools, appliances, equipment, transportation and services as required to perform and complete work shown on the drawings and specified herein.

Work on this contract shall include, but not be limited to the following:

Work Included - This specification covers the requirements for the following work:

A. Remove existing roofing system down to original decking.

B. Install a new Firestone EPDM or approved equal membrane roof system and edge flashing with 25 yr warranty.

C. Remove existing partial gutter and downspouts and following painting in part 4 below, install a new Edco Rainware or approved equal gutter system and downspouts on the back wall roof edge.

D. Contractor shall coordinate with power utility company and the FAA COTR to schedule power outage to the facility if the power lines need to be disconnected for proper installation of the roof. This is an operating facility and down-time must be kept to a minimum.

Asbestos Free Certification The Contractor shall provide to the Contracting Officer (CO) a signed statement stating that to the best of his/her knowledge; no asbestos-containing building materials were used during re-roofing of this facility.

If the FAA suspects the presence of asbestos, the FAA will sample the suspect material to verify that no asbestos-containing material was utilized. This testing shall be performed at the expense of the FAA. If asbestos-containing material is subsequently found during the sampling of the building materials, the Contractor shall remove and replace the product or material at his/her expense. In addition, the Contractor shall incur the costs of the original testing and/or any re-testing that may be necessary.

The Contractor shall submit to the Contracting Officer (CO) Material Safety Data Sheets (MSDS), prior to construction, for all materials and/or products to be utilized during the course of the project accomplishment. During the course of the project, both the COTR and the Contractor shall routinely check products utilized on-site to ensure only products which have had MSDS submitted are utilized. Copies of all MSDS shall be turned over to the local FAA office for their records.

If the Contractor does not submit the required information described above, the FAA shall have a complete building survey performed by a qualified testing firm prior to acceptance. The cost of the survey and any subsequent removal/replacement of any asbestos-containing material shall be deducted from the Contractor's payment.

Hazardous Material and Safety

The contractor shall be responsible for safety on the work site. It is the responsibility of the contractor to eliminate hazards which may result in tripping, electrical shock, fire, falling objects, environmental hazards, vehicular accidents, etc. The contractor shall comply with all safety precautions required by OSHA. The contractor shall have two l5 lb. Class B and C fire extinguishers at the work area through the progress of welding, metal cutting, or any other process involving a spark or fire hazard.

GENERAL ROOFING NOTES

A. This specification is for the installation of an EPDM membrane roofing system with a 25-year warranty as manufactured by Firestone. Equal roofing systems of other manufacturer’s will be considered if they can demonstrate to be an equal product with the same warranty as required above.

B. Prior to beginning work, the Contractor shall decide to his satisfaction that all specifications/drawings contained herein are workable and in accordance with the manufacturer’s requirements for issuance of required warranty. Notify the Contracting Officer of any conflicts.

C. Work and storage space is limited at the site. The contractor shall confine the movement and storage of vehicles, equipment, and materials to such routes, times, and locations as may be designed by the contract. The Contractor shall prevent any abuse, damage, spillage, etc., to such areas used and shall maintain and restore them to their original condition at the conclusion of work.

D. All Contractor work shall be performed by competent, trained, and properly equipped personnel in strict accordance with good roofing practices, applicable industry standards, and the drawings and specifications.

E. The Contractor shall observe all published safety prevention policies and practices relating to the application of the roofing system and related work. All federal, state, and local codes shall be followed.

F. The Contractor shall follow application, safety, and other information as published in the most current edition of the Firestone RubberGard EPDM Guide.

WORK INCLUDED

A. Work under this section covers the installation of a new Firestone, or equal fully adhered EPDM roofing system on the Federal Aviation Administration RTR facility in Sioux City, IA. In addition, the Contractor shall include all related items of work as noted herein or indicated on the drawings or otherwise required to complete the specified elements of work.

All work must meet Firestone specifications/requirements and necessary warranties must be provided for this work.

B. The Contractor shall remove the existing roofing including all existing insulation, flashing/terminations, etc down to the structural deck below. The Contractor shall properly dispose of all materials off site. The Contractor shall install new wood nailers, insulation, densdeck, EPDM membrane, and associated flashings, edge metal all in accordance with the roof system manufacturer’s requirements.

PART 1 – GENERAL ROOFING

1.01 SUMMARY

A. This Section includes the following:

1. Adhered EPDM sheet roofing.

2. Densdeck

3. Polyisocyanurate Insulation.

B. Scope of Work: The phased installation of the new roof system will be installed in such a manner as to maintain the watertight integrity of the structure on a daily basis. Over the cleaned and prepared substrate, the insulation assembly, densdeck, and a 60 mil minimum single ply EPDM membrane should be installed as per the manufacturer’s requirements. All flashing membranes and coated clad metal will be installed in accordance with manufacturer's specifications or recommendations. The completed EPDM roof system, manufacturer's supplied accessories, densdeck and polyisocyanurate should be installed in such a manner so that the EPDM Manufacturer's Twenty-five (25) year Full Systems (NDL) Warranty can be issued upon successful completion of the roofing project.

C. Summary of Work: In order to provide a complete warrantable roof system, the roofing contractor is to provide all labor, tools, equipment, and materials to complete the reroofing project. Such materials that are required, but are not necessarily limited to:

1. 60-mil minimum, EPDM membrane

2. 60-mil minimum fiberglass reinforced membrane for certain flashing details

3. Plates and screws for the attachment of the specified insulation and densdeck to decking

4. Polyisocyanurate insulation

5. Densdeck

6. Coated clad metal perimeter edging.

D. Related Work: The work includes but is not necessarily limited to the installation of:

1. Wood blocking

2. Flat Stock Polyisocyanurate Insulation

3. Densdeck

4. Attachment fasteners and plates

5. Low rise urethane adhesive

6. EPDM roof membrane

7. EPDM roof membrane securement bars, plates, and fasteners

8. EPDM roof membrane flashings

9. Fabricated galvanized metal and coated metal flashings

10. Sealants and adhesives

1.02 REFERENCES

A. Roofing Terminology: Refer to ASTM D1079 for definition of terms related to roofing work not otherwise defined in this Section.

B. American Society for Testing and Materials (ASTM)

1. ASTM D 570 – 1981 (R 1988) Water Absorption of Plastics

2. ASTM D 638 – 1991 Tensile Properties of Plastics

3. ASTM D 751 – 1989 Coated Fabrics

4. ASTM D 882 – 1991 Tensile Properties of Thin Plastic Sheeting

5. ASTM D 1004 – 1990 Initial Tear Resistance of Plastic Film and Sheeting

6. ASTM D 1204 – 1984 Linear Dimensional Changes of Nonrigid Elastomeric Sheeting or Film at Elevated Temperature

7. ASTM D 2136 – 1984 (R 1989) Coated Fabrics – Low-Temperature Bend Test

8. ASTM D 2565 – 1982 Operating Xenon Arc-Type Light Exposure Apparatus With and

Without Water for Exposure of Plastics

9. ASTM D 3045 – 1974 ( 1984) Heat Aging of Plastics Without Load

10. ASTM D 4434 – 1987 Poly (Vinyl Chloride) Sheet Roofing

11. ASTM E 108 – 1991 (Rev. A) Fire Tests of Roof Coatings

12. ASTM G 21 – 1990 Determining Resistance of Synthetic Polymeric Materials to Fungi

13. ASTM G 53 – 1991 Operating Light – and Water-Exposure Apparatus (Fluorescent

UV-Condensation Type) for Exposure of Nonmetallic Materials

1.03 Not Used.

1.04 PERFORMANCE REQUIREMENTS

A. General Requirements: Provide an installed elastomeric single ply roofing system, flashings and related work that are watertight and will not permit the passage of liquid water, that will withstand wind loads, thermally induced movement, and exposure to weather without failure.

B. Material Compatibility: Provide roofing materials that are compatible with one another under conditions of service and application required, as demonstrated by roofing system manufacturer based on testing and field experience.

C. Performance Requirements: Provide roofing membrane system (including membrane, base flashings, and component materials) that shall be made watertight and shall withstand the design pressures that meet ASCE 7 – “Minimum Design Loads for Buildings and Other Structures.” Uplift requirements will be based upon the basic wind velocity pressures for the project according to American Society of Civil Engineers (ASCE) 7 for the specific project conditions. Calculations shall be based upon:

1. Wind Speed at 3 second gust: 110 mph.

2. Wind Load Importance Factor: 1.15.

3. Project Exposure Category: C.

D. Roofing System Design: Provide a membrane roofing system that is identical to systems that have been successfully tested by a qualified testing and inspecting agency to resist uplift pressure calculated according to ASCE 7 for the above specified Wind Speed.

E. Underwriters Laboratories Inc. (UL):

1. UL RMSD – 2007 Roofing Materials and Systems Directory

2. UL 790 – 2007 Fire Resistance of Roofing Coverings Materials

3. Exterior Fire Exposure Classification: Class A, ASTM E 108, for application and slopes shown.

F. American National Standards Institute (ANSI)

G. American Architectural Manufacturer’s Association (AAMA)

H. Occupational Safety and Health ACT (OSHA)

1.05 SUBMITTALS

A. Product Data: Submit latest edition of manufacturer’s roofing and base flashing specifications including list of materials proposed for use, installation procedures, and manufacturer’s Product Safety Data and Technical Information Sheets.

B. Shop Drawings: Include plans, sections, and details of the following:

1. Base flashings, edge metal, and membrane terminations.

2. Furnish project construction schedule for approval.

C. Samples for Verifications: Of the following products:

1. One sample of sheet roofing.

2. One sample of membrane fasteners and securement bars or plates.

3. One sample of specified polyisocyanurate insulation.

4. One sample of the insulation plates and screws.

5. One sample of densdeck.

6. One sample of the densdeck plates and screws.

7. One sample of coated roof edge metal.

D. Certificates:

1. Installer shall submit written certification that there are no undocumented workers being employed by them or by any subcontractor on this project and that all documented workers are covered by workmen's compensation.

2. Manufacturer's written certifications of approval/ acceptance of these specifications and details.

E. Warranty: Sample copy of 25-year (NDL) Full System manufacturer's warranty stating obligations, remedies, limitations, and exclusions of warranty.

F. Submit a copy of the roofing system’s Pre Installation Notice (PIN) that has been accepted and approved.

G. Inspection Report: Copy of roofing system manufacturer's final inspection report of completed roofing installation.

1.06 QUALITY ASSURANCE

A. Installer Qualifications: Engage an experienced installer to perform work who has specialized in installing roofing similar to that required for this project and who is approved, authorized and/or licensed by the roofing system manufacturer for a minimum of five (5) years to install the manufacturer’s products. Roofing contractor shall have completed at least one project of the EPDM manufacturer’s roofing products within the past six (6) months prior to the start date of this project.

B. Manufacturer Qualifications: Provide primary products, including each component of the

EPDM single ply membrane system and related flashings produced by a single manufacturer, which has produced that type system successfully for not less than 20 years.

Provide secondary products, including insulation, densdeck, coated metal flashings, fasteners, vapor/air barrier sheets, and other accessories, which are acceptable to the EPDM single ply membrane manufacturer for use with roofing system indicated.

C. Manufacturer EPDM membrane shall meet the following characteristics:

1. Protective membrane surface coating to resist accumulation of air borne contaminants such as dust and dirt.

2. EPDM Membrane Minimum Energy Star Requirements:

a. Initial reflectivity not less than 0.83

b. Initial emissivity not less than 0.92

c. Solar reflective index (SRI) not less than 104.

3. Certification that the EPDM membrane is within 2.0 mil thickness of the specified membrane thickness. ASTM D751 or D638 nominal thickness of +/- 10 percent will not be acceptable for measurement of membrane thickness.

D. Fire-Tested-Response Characteristics: Provide roofing materials with the fire-tested-response characteristics indicated as determined by testing identical products per test method indicated by UL, FM, or another testing and inspecting agency acceptable to authorities having jurisdiction. Identify materials with appropriate markings of applicable testing and inspecting agency.

1. Exterior Fire-Test Exposure: Class A, ASTM E 108, for application and slopes indicated.

2. Fire-Resistance Ratings: ASTM E 119, for fire-resistance-rated roof assemblies of which roofing materials are a part.

E. Factory Technical Representative: Arrange, schedule and pay, if required by manufacturer, for services of manufacturer’s technical representative to be on site a minimum of one time during the installation of manufacturer’s roofing system.

F. Contractor's Responsibility: Any failure by the COTR or Manufacturer's Representative to detect, pinpoint, or object to any defect or noncompliance of these specifications of work in progress or completed work shall not relieve the contractor, reduce, and/or in any way limit the responsibility of full performance of work required under these specifications.

1.07 DELIVERY, STORAGE AND HANDLING

A. Deliver roofing materials to project site in original containers with seals unbroken and labeled with manufacturer's name, product brand name and type, date of manufacture, and directions for storing and mixing with other components. Deliver materials in sufficient quantity to allow work to proceed without interruption.

B. Store liquid materials in their original undamaged containers in a clean, dry, protected location and within temperature range required by roofing system manufacturer.

1. Discard and legally dispose of liquid material that cannot be applied within its stated shelf life.

C. Store and protect materials, including roofing insulation and densdeck from physical damage and deterioration by sunlight, moisture, soiling, and other sources. Store all materials in a dry location. Use pallets to support all materials from roof deck and ground.

Distribute the load to stay within live load limits of roof construction. Remove unused materials from roof at the end of each day’s work. Comply with roofing manufacturer's written instructions for handling, storing, and protecting during installation.

D. Handle and store roofing materials and place equipment in a manner to avoid permanent deflection of deck.

1.08 PROJECT CONDITIONS

A. Weather Limitations: Proceed with roofing work only when existing and forecasted weather conditions permit roofing to be installed according to manufacturer’s written instructions and warranty requirements.

B. The applicator shall conduct fastener pullout tests in accordance with the latest revision of the SPRI/ANSI Fastener Pullout Standard to help verify condition of deck/substrate and to confirm expected pullout values.

C. The EPDM adhered membrane shall not be installed under the following conditions without consulting EPDM manufacturer for precautionary steps:

1. The roof assembly permits interior air to pressurize the underside of the membrane.

2. Any exterior wall has 10% or more of the surface area comprised of opening doors or windows.

3. The wall/deck intersection permits air entry into the wall flashing area.

D. Protective wear should be worn when using solvents, adhesives or as required by job conditions.

E. Environmental Requirements:

1. Apply roofing in dry weather.

2. Do not expose roof components and flashing in inclement weather or when it is predicted a 30% or more possibility for inclement weather.

3. When ambient temperature is below 40 degrees Fahrenheit, expose only enough sensitive cements, sealants, and adhesives as required for use within a four-hour period.

4. Do not expose membrane and accessories to a constant temperature of 180 degrees Fahrenheit or more.

F. Protection:

1. Provide special protection and avoid traffic on completed areas of membrane installation.

2. Restore to original condition or replace work and/or materials damaged during handling of roof materials.

3. Take precautions as required to protect adjacent work and structures.

G. Emergency Equipment: Maintain on site equipment necessary to apply temporary emergency edge seal in event of sudden storms or inclement weather.

H. Restrictions:

1. Comply with General Requirements on use of site.

2. Smoking is prohibited on roof area.

3. Maintain facility and all utility services in a functional condition.

4. Provide sanitary facilities for employees.

1.09 WARRANTY

A. General Warranty: The warranties specified in this Article shall not deprive the FAA of other rights under other provisions of the Contractor Documents and shall be in addition to, and run concurrent with, other warranties made by the Contractor under requirements of the Contract Documents.

B. Roofing Manufacturer’s Warranty: Submit a written warranty, without monetary limitation, with all available options, including flashing endorsement, manufacturer's roof insulation, densdeck and roofing manufacturer’s accessories, signed by roofing system’s manufacturer agreeing to promptly repair leaks resulting from defects in materials or workmanship for the following warranty period:

1. A 25-Year Full Systems Warranty shall be issued upon completion of the roofing project.

2. The warranty shall guarantee the entire roof system and associated work against defective materials and workmanship of installation, with NO exclusions for ponding of water.

3. Warranty shall include a wind speed warranty for 110 mph.

C. Contractor's Warranty: Submit roofing Installer's workmanship warranty, on a notarized written warranty form, signed by Installer, covering Work of this Section, including membrane roofing, sheet flashing, roof insulation, densdeck, fasteners, and air or vapor retarders, if any, for the following warranty period:

1. Warranty Period: Five (5) years from date of Substantial Completion.

PART 2 – ROOFING PRODUCTS

2.01 MANUFACTURERS

A. The components of the roof system are to be products of a single manufacturer or approved by the EPDM manufacturer, prior to proposal submittal date, as to provide the specified system warranty.

B. Specifications are based on Firestone RubberGard; EPDM single-ply roofing systems as manufactured by Firestone Building Products, Inc. (Indianapolis, IN). If the contractor wishes to propose an equal system, the proposed system must meet or exceed the specifications and must be produced by a manufacturer which has manufactured and installed roof materials and systems of the type specified for a minimum of twenty (20) years, and who maintains a single source responsibility for the total roofing systems.

C. Manufacturers: The components of the roofing system are to be products of a single manufacturer as required to provide the specified system warranty.

2.02 EPDM SHEET

A. The following physical characteristics are based on Firestone RubberGard single-ply membrane system: 60-mil elastomeric sheet roofing that is adhered to acceptable substrate with Firestone bonding adhesive.

B. Description: Non-reinforced, cured, synthetic single-ply membrane composed of Ethylene

Propylene Diene Terpolymer (EPDM) conforming to the following physical properties:

1. 60 mil, +/- 2.0 mils.

2. Membrane shall have 60 mils of uninterrupted weatherable thickness.

3. Membrane shall comply with UL Class A fire requirements in conjunction with specified slope, insulation, and surfacing.

C. Physical Properties:

Property: Specification:

Specific Gravity 1.15 +/- 0.05 Tensile Strength, Minimum, psi (Mpa) 1425 (9.8) Elongation, Minimum, % 475 Tear Resistance, lbf / in (N / M) 210 ( 933) Ozone Resistance, 166 hours @ 100 pphm @ 104ºF with 50% extension

No Cracks

Heat Aging, 28 days @ 240ºF Tensile Strength, Minimum psi (Mpa) Elongation, Minimum %

1415 ( 9.8)

Brittleness Point, max., ºF, ºC -49 ( -45) Water Absorption, change in weight after immersion in water for 166 hours @ 158ºF, %

< 2.0

Tolerance On Nominal Thickness, % +/- 10

Water Vapor Permeability, Perm-Mils 2.0

Reference Standards:

1. ASTM D4637-96: Standard Specification for EPDM Sheet Used in Single-ply Roof

Membrane.

2. ASTM D297: Methods for Rubber Products, Chemical Analysis.

3. ASTM D412, Die C: Test Methods for Rubber Properties in Tension.

4. ASTM D471: Test Methods for Rubber Property, Effect of Liquids.

5. ASTM D573: Test Method for Rubber, Deterioration in an Air Oven.

6. ASTM D624, Die C: Test Method for rubber property-Tear Resistance

7. ASTM D746: Test Method for Brittleness Temperature of Plastics and Elastomers by

Impact.

8. ASTM D751: (Grab Method) Method of Testing Coated Fabrics.

9. ASTM D816: (Modified) Methods of Testing Rubber Cements.

10. ASTM D1149: Test Method for Rubber Deterioration, Surface Ozone Cracking in a

Chamber.

11. ASTM D2240: Test Method for Rubber Property - Durometer Hardness.

12. ASTM E96: Test Methods for Water Vapor Transmission of Materials.

2.03 AUXILIARY MATERIALS

A. General: Furnish auxiliary materials recommended by roofing system manufacturer for intended use and compatible with membrane roofing materials.

1. Furnish liquid-type auxiliary materials that meet VOC limits of authorities having jurisdictions.

B. Flashing and Flashing Accessories: As recommended by the Elastomeric sheet manufacturer's printed instructions for reinforced sheet flashing of same material, type, and color as sheet membrane.

C. Asphalt Resistant EPDM Membrane: A 60 mil EPDM flashing membrane used to resist asphalt and many other rooftop contaminates. Either side of the EPDM flashing membrane can be exposed to weather conditions which allows it to cover rooftop contaminates or act as a sacrificial layer for contaminates being emitted onto the roof.

D. Fasteners: Manufacturer approved corrosion resistant steel screws of the appropriate size for fasteners for roof membrane, densdeck, and insulation attachment and for sheet metal flashing. Fasteners for the membrane shall be supplied by the elastomeric manufacturer and are to be installed as recommended by EPDM sheet manufacturer's printed instructions.

E. Membrane Bonding Adhesive: A water-based or contact adhesive used to attach membrane to the horizontal or near-horizontal substrate. Application rates are to be as recommended by elastomeric sheet manufacturer's printed instructions.

F. Membrane Flashing Bonding Adhesive: A solvent-based reactivating-type adhesive used to attach the flashing membrane to the substrate, either horizontally or vertically. Application rates are to be as recommended by elastomeric sheet manufacturer's printed instructions.

The solvent-based reactivating-type adhesive is to install in such a manner to develop a bond between the membrane and the substrate to which the membrane is to be attached.

G. Sealants: Membrane manufacturer’s approved sealant shall be used to seal penetrations through the membrane system and at miscellaneous sealant applications that come in contact with roof systems components.

H. Sealing Tape: A high performance sealant tape with superior surface tack that remains elastic and is designed to bond the EPDM membrane and a variety of metals. Sealing tape strip is used to seal the metal roof edge and metal copings of buildings reducing air infiltration into the roof assembly, behind the EPDM membrane flashing at termination details..

I. Other miscellaneous materials shall be of the “best grade” available and to be approved in writing by the roofing manufacturer, prior to use, for the specific application.

2.04 OVERLAYMENT BOARD:

DensDeck® - Fire-tested, gypsum hardboard with glass-mat facers and a pre-primed surface on one side. DensDeck is provided in 4 x 8 ft (1.2 x 2.4 m) and 4 x 4 ft (1.2 x 1.2

m) board size and in thicknesses of 1/4, 1/2 and 5/8 inch (6, 13 and 16 mm). Densdeck Board shall be compatible with the membrane as recommended in elastomeric sheet manufacturer's printed instructions. Consult Product Data Sheet for size, thickness and additional information.

2.05 INSULATION

A. General: Provide preformed roof insulation boards that comply with requirements, selected from manufacturer’s standard sizes and of thickness indicated.

B. Flat Stock and Tapered Insulation: Polyisocyanurate Insulation Board shall be compatible with the membrane as recommended in elastomeric sheet manufacturer's printed instructions. The polyisocyanurate insulation shall be composed of a closed-cell polyiso foam core integrally laminated to heavy, durable and dimensionally stable coated-glass facers. The insulation shall have the following characteristics:

1. Dimensional Stability: (Length and Width) ASTM D 2126 < 2 %

2. ASTM C 1289, Type II, Class 1, Grade 3 (25 psi)

3. Compressive Strength: (10% Deformation) ASTM D 1621 25 psi (172 kPa)

4. Water Absorption: ASTM C 209 / ASTM D 2842 < 1 % / < 3.5 %

5. Moisture Vapor: Transmission ASTM E 96 < 1.0 perm (85.0ng/ (Pa•s•m2))

6. Product Density: ASTM D 1622 Nominal 2.0 pcf (32.04 kg/m3)

7. Flame Spread: ASTM E 84 (Full 10 min. Test) 40–60

8. Smoke Developed: ASTM E 84 (Full 10 min. Test) 50–170

9. Tensile Strength: ASTM D 1623 >730 psf (35 kPa)

10. Service Temperature: -40ºF to 200º F

C. Insulation Minimum Thickness: 1.50 inches.

D. Tapered Crickets and Saddles: A minimum of ½ inch per foot.

E. Tapered Roof Insulation: A minimum of ¼ inch per foot.

F. Insulation Average LTTR-value: 30.6.

2.06 INSULATION/DENSDECK ACCESSORIES

A. General: Furnish roof insulation/densdeck accessories recommended by manufacturer for intended use and compatible with sheet material.

B. Fasteners: Factory-coated fasteners and plates meeting corrosion-resistance provisions of

FM 4470, designed for fastening roof insulation/densdeck to substrate, and acceptable to roofing system manufacturer.

2.07 MISCELLANEOUS FASTNERS AND ANCHORS

A. General: All fasteners, anchors, nails, straps, bars, etc. shall be post-galvanized steel, aluminum or stainless steel. Mixing metal types and methods of contact shall be assembled in such a manner as to avoid galvanic corrosion. Fasteners for attachment of metal to masonry shall be expansion type fasteners with stainless steel pins. All concrete fasteners and anchors shall have a minimum embedment of 1¼ inch (32 mm) and shall be approved for such use by the fastener manufacturer. All miscellaneous wood fasteners and anchors used for flashings shall have a minimum embedment of 1 inch (25 mm), stainless steel, and to be approved for such use by the fastener manufacturer.

PART 3 – ROOFING EXECUTION

3.01 EXAMINATION

A. Examine and verify that receiving substrate surfaces of the structure have no defects or errors which would result in poor or potentially defective application, or cause latent defects in workmanship.

1. Installer shall examine substrate to which roofing material is to be applied, to ensure that its condition is satisfactory for roofing application. Do not permit voids greater than 1/4 inch wide in the substrate. Substrates for roofing materials shall be dry and free of oil, dirt, grease, sharp edges, and debris. Inspect substrates, and correct defects before application of elastomeric sheets.

B. Verify that roofing openings and penetrations are in place and set and braced and that roof drains are properly clamped into position.

C. Do not proceed with installation until unsatisfactory conditions have been corrected.

Starting installation shall imply contractor's acceptance of surfaces and conditions.

3.02 PREPARATION

A. Clean substrate of dust, debris, and other substances detrimental to roofing installation according to roofing system manufacturer's written instructions. Remove all sharp projections.

B. Fill all gaps and voids between substrate components that are wider than 1/4 inch. Fill all gaps with same materials as substrate.

C. Prevent materials from entering and clogging roof drains and conductors and from spilling or migrating onto surfaces of other construction.

D. Protect adjacent areas or surfaces from damage as a result of the work of this section.

E. Complete terminations and base flashings and provide temporary seals to prevent water from entering completed sections of the roofing system at the end of the workday or when rain is forecast. Remove and discard temporary seals before beginning work on adjoining roofing.

3.03 WOOD NAILER INSTALLATION

A. Install new continuous wood nailers at the perimeter, i.e. metal edge or metal coping caps, of the roof and around roof projections and penetrations.

B. All Wood Nailers shall be anchored to resist a minimum force of 300 pounds per lineal foot

(4,500 Newtons/lineal meter) in any direction. Individual nailer lengths shall not be less than 3 feet (0.9 meter) long. Nailer fastener spacing shall be at 12 inches (0.3 m) on center or 16 inches (0.4 m) on center if necessary to match the structural framing. Fasteners shall be staggered 1/3 the nailer width and installed within 6 inches (0.15 m) of each end. Two fasteners shall be installed at ends of nailer lengths.

C. Thickness shall be as required to match substrate or insulation height to allow a smooth transition.

D. New wood nailers and/or plywood wall sheeting shall meet the performance criteria as required in this specification.

3.04 INSULATION & DENSDECK BOARD INSTALLATION

A. General Criteria:

1. Install the specified insulation/densdeck per the required Windstorm Resistance Classification, to the insulation manufacturer and/or to the roofing systems manufacturer’s written installation instructions and according to the calculations of ASCE-7 wind uplift pressures for this project.

2. Warped or bent insulation/densdeck boards are not acceptable.

3. Single Base Layer of Insulation/Densdeck: Stagger end joints of the insulation/densdeck board.

4. Insulation shall be neatly cut to fit around penetrations and projections.

5. Insulation shall be a maximum of 4' x 4' in size.

6. All drains shall have a minimum of a 4 feet x4 feet drain sump, created by tapered insulation. Minimum thickness at the base of the roof drain shall be 1.50 inches.

7. Minimum thickness of the insulation layer shall be 1.50 inches.

8. Minimum thickness of the densdeck layer shall be 0.50 inches.

9. Do not install more insulation board than can be covered with the specified roofing system by the end of the day or onset of inclement weather.

B. Attachment of Polyisocyanurate Insulation on Steel/Wood Decks:

1. Base Layer of Insulation: All edges of insulation boards shall be supported on the top rib of the steel deck. Boards edges shall be as close as practical to the center of the rib, with a minimum of 1½-(1.5) inches bearing on the rib. Stagger end joints of the insulation/densdeck board layer a minimum of 1/3 of overall board length.

2. The specified insulation/densdeck shall be installed over approved steel/wood decking and to be mechanically fastened to the steel/wood decking with EPDM manufacturer’s approved fasteners and plates.

3. Approved perimeter fastening of roof insulation shall be defined as the strip of roof area around the entire outside perimeter of the building having a width defined by the least of the following parameters: 1) 10% of the building length; 2) 10% of the building width; 3) 40% of the building eave height. The perimeter and corner widths shall not be less than eight (8') feet.

4. Approved field fastening pattern of insulation/densdeck panels, which fall outside the corner and perimeter attachment areas of the building, shall be fastened a minimum rate of one fastener for every 2.00 square feet (a minimum of 8 fasteners and plates per 4' x 4' sheet); or according to the manufacturer's requirements, whichever is more stringent.

5. The perimeter areas of the roof, the insulation/densdeck shall have an increased fastening pattern of 75 percent of the field attachment. The corners of the roof, the insulation/densdeck shall have an increased fastening pattern of 100 percent of the field attachment.

6. Fasteners are to be installed in accordance with fastener manufacturer's recommendations. Fasteners are to have a minimum 1-inch penetration through the structural steel or wood decking.

7. Use fastener tools with a depth locator to ensure proper installation of fasteners.

8. Pullout tests are to be done to verify deck condition and actual pullout values. Test results are to be forwarded to the CO/COTR and to the EPDM manufacturer prior to start of project.

3.05 EPDM SHEET INSTALLATION

A. Install sheet according to ASTM D 5082 and per ASCE-7 wind uplift requirements for the referenced project.

B. Install EPDM membrane sheet per manufacturer’s requirements in order to obtain manufacturer 25-year full system (NDL) warranty.

C. Fastener pull out test will be required for verification of condition of substrate decking and suitability of manufacturer’s fasteners for that substrate.

D. The surface of the insulation/densdeck substrate shall be inspected prior to installation of the EPDM roof membrane. The insulation/densdeck substrate shall be clean, dry and smooth with no excessive surface roughness, contaminated surfaces or unsound surfaces such as broken, delaminated, or damaged insulation/densdeck boards. Any wet, broken, delaminated, or damaged insulation shall be replaced with new insulation/densdeck.

E. Install in strict accordance with manufacturer's latest published requirements, instructions, specifications, details and approved shop drawings.

F. Start installation of sheet in presence of roofing system manufacturer’s technical personnel.

G. Apply bonding adhesive to the substrate at the membrane manufacturer’s recommended rate.

H. The means of application and the quantities of membrane adhesive to be used shall be per the recommendations of the manufacturer. Consult manufacturer on proper application rates and acceptable substrates for the membrane adhesives.

I. The applicator shall count the amount of pails of adhesive used per area to verify conformance to the specified adhesive rate.

J. Mechanically fasten sheet securely at terminations and at the perimeter of roof to meet the

ASCE-7 wind uplift requirements.

K. Spread sealant bed over deck drain flange at deck drains and securely seal roofing sheet in place with drain clamping ring.

L. Field-seam according to “Seam Installation” Article.

M. Securement Around Perimeter and Rooftop Penetrations

1. Around all perimeters, at the base of walls, drains, curbs, vent pipes, or any other roof penetrations, manufacturer’s fasteners and metal bar or plates shall be installed.

Fasteners and securement bar shall be installed accord to the manufacturer's instructions. Fasteners shall be installed using the fastener manufacturer's recommended fastening tools with depth locators.

2. EPDM membrane flashings shall extend a minimum of 3 inches past the securement bar or plates and attached to the EPDM deck sheet.

3.06 MEMBRANE LAP SPLICING

1. Position the sheet at the splice area by overlapping the membrane 5 inches. Once the membrane is in place, mark the bottom sheet 1/2" to 3/4" from the edge of the top sheet every 4 to 6 feet. Tack the sheet back with Firestone QuickPrime at 5' centers and at factory splices or as necessary to hold back the membrane at the splicing area.

2. Remove excess amounts of dusting agent on the sheet and at factory splices using a stiff push broom. Stir Firestone QuickPrime thoroughly before and during use. Dip the QuickScrubber into the bucket of QuickPrime, keeping the QuickScrubber flat. Apply the QuickPrime using long back and forth strokes with pressure along the length of the splicing area until surfaces become dark gray in color. Apply QuickPrime to both surfaces at the same time to allow the same flash off time. Change the scrub pad each

200 feet of 3 inch field splice, or when the pad will no longer hold the proper amount of QuickPrime. Additional scrubbing is required at areas that may have become contaminated or have excess amounts of dusting agent, and at all factory splices.

3. Position the QuickSeam Splice Tape on the bottom sheet, aligning the edge of the release paper with the markings. Immediately roll the splice tape with a 3”- 4” wide silicone or silicone sleeved steel hand roller or a short nap 3" paint roller.

4. When the QuickSeam Splice Tape has been installed for the entire splice length, allow the top sheet to rest on top of the tape's paper backing. Trim the top sheet as necessary to assure that 1/8"-1/2" of the QuickSeam Splice Tape will be exposed on the finished splice.

5. To remove the paper backing from the tape, first roll back the RubberGard membrane sheet, then peel the paper backing off the QuickSeam Splice Tape. This is accomplished by pulling against the weight of the bottom sheet at approximately a 45 degree angle to the tape and parallel with the roof surface. Allow the top sheet to fall freely onto the exposed QuickSeam Splice Tape. Broom the entire length of the splice as the release paper is being removed.

6. Roll the splice using a 1 1/2 "-2" wide silicone or silicone sleeved steel hand roller, first across the splice and then along the entire length of the splice.

7. Over the completed seam, install a 5” QuickSeam Flashing cover strip centered over the Lap Splice. Remove excess amounts of dusting agent on the sheet and at factory splices using a stiff push broom. Stir Firestone QuickPrime Plus thoroughly before and during use. Keeping the QuickScrubber flat, dip the QuickScrubber into the bucket of QuickPrime Plus. Apply the QuickPrime Plus using long back and forth strokes with pressure along the length of the splicing area until surfaces become dark gray in color.

Change the scrub pad each 100 feet of cover strip or when the pad will no longer hold the proper amount of QuickPrime Plus. Additional scrubbing is required at areas that may have become contaminated or have excess amounts of dusting agent, and at all factory splices.

8. Position the 5” QuickSeam Flashing cover strip centered over the Lap Splice.

Immediately roll the splice tape with a 3"-4" wide silicone or silicone sleeved steel hand roller or a short nap 3" paint roller.

9. To remove the paper backing from the flashing, peel the paper backing off the 5”

QuickSeam Flashing cover strip by pulling at approximately a 45-degree angle to the flashing and parallel with the roof surface. Broom the entire length of the cover strip as the release paper is being removed.

10. Roll the cover strip using a 1 1/2"-2" wide silicone or silicone sleeved steel hand roller, first across the cover strip and then along the entire length of the cover strip.

3.07 FLASHING INSTALLATION

A. General: All flashings shall be installed concurrently with the roof membrane as the job progresses. No temporary flashings shall be allowed without the prior written approval of the CO and the EPDM Manufacturer. Approval shall only be for specific locations on specific dates. Flashing shall be adhered to compatible, dry, smooth, and solvent-resistant surfaces. Use caution to ensure adhesive fumes are not drawn into the building.

B. Contact adhesive shall be used to adhere the EPDM membrane flashing to acceptable wall and equipment curb substrates. No bitumen shall be in contact with the EPDM membrane.

If bitumen exists, then the EPDM manufacturer’s asphalt resistant membrane shall be use for membrane flashing.

C. Contact Adhesive for Membrane Flashings:

1. Over the properly installed and prepared flashing substrate, contact adhesive shall be applied according to instructions found on the Product Data Sheet. The contact adhesive shall be applied in smooth, even coats with no gaps, globs or similar inconsistencies. Only an area that can be completely covered in the same day's operations shall be flashed. The bonded sheet shall be pressed firmly in place.

2. All panels of membrane shall be applied in the same manner, overlapping the edges of the panels.

3. All flashing membranes shall be consistently adhered to substrates. All interior and exterior corners and miters shall be cut and attached/adhered into place. Where applicable, manufacturer’s pre-fabricated corners shall be used.

D. All flashings that exceed 30 inches (0.75 m) in height shall receive additional securement.

Consult EPDM manufacturer for securement methods.

E. Only an area, which can be completely covered in the same day's operations, shall be flashed.

F. Test lap edges with probe to verify seam continuity of all membrane flashings.

G. Complete all membrane flashing and metal details on a daily basis. No temporary flashings shall be allowed without the prior written approval of the COTR and EPDM Manufacturer.

If any water is allowed to enter under the completed roofing due to incomplete flashings, the affected area shall be removed and replaced at the applicator's expense.

3.08 COATED CLAD PERIMETER AND METAL BASE FLASHINGS

A. General: All flashings shall be installed concurrently with the roofing membrane as the job progresses. No temporary flashings shall be allowed without the prior written approval of the COTR and EPDM Manufacturer. Acceptance shall only be for specific locations on specific dates. If any water is allowed to enter under the newly completed roofing due to incomplete flashings, the affected area shall be removed and replaced at the applicator’s expense.

B. Coated metal flashings shall be formed to match existing conditions.

C. Coated metal shall be installed to provide adequate resistance to bending and allow for normal thermal expansion and contraction.

D. Install multi-purpose sealant tape and termination bar as indicated on project details. The multi-purpose sealant tape must be applied to clean and dry surfaces.

E. Secure the coated metal over the EPDM field membrane and the multi-purpose sealant tape.

Fastened the coated metal with approved stainless steel nails or other acceptable fasteners.

Fasteners shall be fastened 4 inches on center and staggered 4 inches on center.

3.09 METAL FLASHINGS, COPINGS, EDGE TRIM AND ACCESSORIES

INSTALLATION

A. General: Secure metal flashings accessories at roof edges and perimeters.

B. All metal flashings, gutters, downspouts, and perimeter metal edging shall be fabricated and install per current SMCA requirements.

C. Complete all metal work in conjunction with roofing and flashings so that a watertight condition exists daily.

D. Metal shall be installed to provide adequate resistance to bending to allow for normal thermal expansion and contraction.

E. Metal flashings shall be securely fastened into solid wood blocking. Approved fasteners shall penetrate the wood nailer a minimum of 1 inch (25mm).

F. Airtight and continuous metal hook strips are required behind all metal fascias. Hook strips are to be fastened 12 inches (0.3 m) on center into the wood nailer or masonry wall.

G. Metal hook strips for metal copings and metal perimeter edging shall extend past wood nailers over wall or perimeter surfaces by 1.5 inches (38 mm) minimum. The metal hook strip shall be securely sealed with multi-purpose sealing tape to prevent any air entry between the building and the metal hook strip, between the EPDM membrane, and between the metal coping and / or the coated metal.

H. All metal counter-flashings shall overlap base membrane flashings at least 4 inches (100 mm).

I. All metal joints shall be watertight. Use SMCA approved metal joint application and approved sealant.

3.10 FIELD QUALITY CONTROL

A. Manufacturer's Quality Control Inspection: The Manufacturer's Technical Representative shall review the on-going work at least once during installation. All defects noted non-compliant with the specifications or the recommendations of the elastomeric manufacturer should be itemized in a punch list. These items must be corrected immediately by the contractor to the satisfaction of the COTR and the elastomeric manufacturer.

B. Final Roof Inspection: Arrange for roofing system manufacturer's technical personnel to inspect roofing installation upon completion of the roofing project.

3.11 PROTECTING AND CLEANING

A. Protect sheet membrane roofing from damage and wear during remainder of construction period. Installer is to inspect the completed roofing system for any damage. Should there be any damage resulting from "other" trades, the roofing contractor shall document the damage and report the damage to the COTR.

B. Correct deficiencies or remove roofing that does not comply with requirements, repair substrates, reinstall roofing, and repair sheet flashings to a condition free of damage and deterioration at the time of substantial completion and according to warranty requirements.

C. Upon completion of the work of this section, dispose of, away from the site, all debris, trash, containers, residue, roofing remnants and scraps which results from the work of this section.

D. Clean overspray and spillage from adjacent construction using cleaning agents and procedures required by manufacturer of affected construction.

3.12 ACCEPTANCE

A. Prior to demobilization from the site, the COTR, manufacturer technical representative and installer shall review the completed work. All defects noted noncompliant with the specifications or the recommendations of the EPDM manufacturer should be itemized in a punch list. These items must be corrected immediately by the contractor prior to demobilization to the satisfaction of the COTR, and the EPDM manufacturer.

B. All warranties as required for this project per the specifications shall be submitted for approval prior to final payment.

PART 4 – PAINTING

Previously Painted Exterior Doors/Frames/Hoods/Louvers/Wall-mounted Conduit: Following power washing, remove any remaining loose paint with a wire brush/wheel. Scrape/clean and recaulk joints between frames and walls with elastomeric sealant. Prep and paint doors/frames, hoods, wall-mounted conduit and louvers with 1 primer coat of Sherwin Williams Macropoxy 646 or equal 2-component primer. Apply 2 top coats of Sherwin Williams Acrolon 218 or equal. Colors shall be selected from the manufacturers standard color charts to match existing.