MI EDPM SOW Roof Main Bldg.docx

Statement Of Work Roof Replacement Milford CT January 2020

PART 1 GENERAL

1.01 DESCRIPTION

A. The Milford NMFS/Northeast Fisheries Science Center is located at 212 Rogers Ave Milford, CT. 06460-6499. All inquiries are to the attention of Ronald Guilmette (Facility Operations), is the Contracting officers Technical Representative (COR) and may be contacted regarding any questions or for a pre-bid job site inspection, 401.782.3291 Office Phone or EMAIL Ronald.Guilmette@NOAA.GOV

B. Apply a Fully Adhered EPDM & Mechanically Fasten Roofing System with:

1. Insulation with Cover Board (tack board),

2. Flashing, caps, joint covers, strainer baskets, Gutters, downspouts,

3. Roof Accessories to include but not limited too: rubber boots, cants, nailers, blocking, cleats, fasteners, adhesives, rigglets, sealants, wood nailers, and other materials and products to deliver a roofing systems meeting the requirements in the contract documents supporting the best practices as recommended by the manufacture, NRCA, CCRC, and ASTM.

C. Complete demolition of existing roofing system, including membrane system(built up asphalt), cover(tack) board, insulation, flashing, cants, nailers, blocking, metal flashing, downspouts, gutters, boots, and other materials to expose the concrete substrates.

D. Contractor shall install new roofing system under and around all roof piping, chimneys, drains, extrusions, vents, HVAC systems, conduit, antennas, lights, security cameras, roof hatches, and other items located on or penetrating the roof.

E. Temporarily relocate and disconnect all conduits, machinery, vents, caps, security cameras, lights, piping, condensers, HVAC, and all other objects obstructing or in the way to allow for complete demolition and installation. Contract shall verify prior to bid submission.

1.02 EXTENT OF WORK

A. Provide all labor, material, tools, equipment, and supervision necessary to complete the installation of approximately 9750 square feet (sf) of white 60-mil thick EPDM membrane fully adhered & mechanically fasten roofing system with a minimum solar reflect of .90 (CCRC ASTMC1371), as specified herein and as indicated in accordance with the manufacturer’s most current specifications and details to ensure to deliver a roofing systems meeting the requirements in the contract documents supporting the best practices as recommended by the manufacture, NRCA, UL, and ASTM.

B. The roofing contractor shall be fully knowledgeable of all requirements of the contract documents and shall make themselves aware of all job site conditions that will affect their work.

C. The roofing contractor shall confirm all supplied information prior to bid, and Inform COR of any conflicts that will affect their cost proposal.

E. Any contractor who intends to submit a bid using a roofing system other than the approved manufacturer must submit for pre-qualification in writing ten (10) calendar days prior to the bid date. Any contractor who fails to submit all information as requested will be subject to rejection.

F. Contractor shall tapper roof to ensure proper drainage.

1.03 SUBMITTALS

A. Fifteen (15) working after notice to proceed the contractor shall submit the following:

1. Sample of the manufacturer’s Membrane System Warranty.

2. Submit a letter of certification from the manufacturer which certifies the roofing contractor is authorized to install the manufacturer’s roofing system and lists foremen who have received training.

3. Certification of the manufacturer’s warranty reserve.

4. Manufacturer's Certificate: Certify products meet or exceed specified sustainable design requirements.

4. Sustainable Sites Certificates: Certify roofing materials meet or exceed specified solar reflectance index.

5. SDS Sheet.

6. Safety plan.

7. 1’x1’ EDPM sample and manufactures product data.

8. 1’x1’ SecurShield HD Composite and manufactures product data.

9. Product Data: Submit characteristics on adhesive materials, membrane materials, flashing materials, insulation, and cover(tack) board.

10. Fastener: Shall be of sufficient length and strength to meet all requirements per the manufacture and all requirements in the contract documents.

B. Upon completion of the installed work, submit copies of the manufacturer’s final inspection to the COR and prior to the issuance of the manufacturer’s warranty.

1.04 PRODUCT DELIVERY, STORAGE AND HANDLING

A. Deliver materials to the job site in the manufacturer’s original, unopened containers or wrappings with the manufacturer’s name, brand name and installation instructions intact and legible. Deliver in sufficient quantity to permit work to continue without interruption.

B. Comply with the manufacturer’s written instructions for proper material storage.

1. Store materials between 60F and 80F in dry areas protected from water and direct sunlight. If exposed to lower temperature, restore to 60F minimum temperature before using.

2. Store materials containing solvents in dry, well ventilated spaces with proper fire and safety precautions. Keep lids on tight. Use before expiration of their shelf life.

C. Insulation must be on pallets, off the ground and tightly covered with waterproof materials. Manufacturer’s wrap does not provide sufficient waterproofing.

D. Any materials which are found to be damaged shall be removed and replaced at the contractor’s expense.

1.05 WORK SEQUENCE

A. Schedule and execute work to prevent leaks and excessive traffic on completed roof sections. Care shall be exercised to provide protection for the interior of the building and to ensure water does not flow beneath any completed sections of the membrane system.

B. Do not disrupt activities in occupied spaces.

1.06 USE OF THE PREMISES

A. Before beginning work, the roofing contractor shall secure approval from the COR for the following:

B. Interior stairs or elevators may not be used for removing debris or delivering materials, except as authorized by COR.

C. Working hours shall be 7:00 AM – 3:30 PM M-F. Contractor shall observe all federal holidays.

1.07 EXISTING CONDITIONS

A. If discrepancies are discovered between the existing conditions and those noted on the drawings, immediately notify the owner’s representative by phone and solicit the manufacturer’s approval prior to commencing with the work. Contractor shall make the building watertight until the discrepancies are resolved.

1.08 SITE VISIT

A. Site visits are mandatory. Prior to bid submittal, the roofing contractor shall schedule a job site inspection to observe actual conditions and verify all dimensions on the roof. Should access to the roof be necessary before Bid Date the contractor shall contact the COR, Ronald Guilmette at 401.782.3291 to coordinate an appropriate time. 48 hours notice is required for site visits. Site Visits are mandatory.

1.09 TEMPORARY FACILITIES AND CONTROLS

A. Temporary Utilities:

1. Normal requirements for water, commercial power are available at the site. Coordinate with COR 3 work days in advance of any request to utilize water or power.

2. Provide all hoses, valves and connections for water from source designated by the owner when made available.

3. Provide all electrical cords, electrical connections meeting the NEC, UL, and OSHA requirements.

4. Contractor shall provide porto-jons.

B. Building Site:

1. The roofing contractor shall use reasonable care and responsibility to protect the building and site against damages. The contractor shall be responsible for the correction of any damage incurred as a result of the performance of the contract.

2. The roofing contractor shall remove all debris from the job site in a timely and legally acceptable manner so as to not detract from the aesthetics or the functions of the building.

C. Security: Obey the owner’s requirements for personnel identification, inspection and other security measures.

1.10 JOB SITE PROTECTION

A. The roofing contractor shall adequately protect building, paved areas, service drives, lawn, shrubs, trees, etc. from damage while performing the required work. Provide canvas, boards and sheet metal (properly secured) as necessary for protection and remove protection material at completion. The contractor shall repair or be responsible for costs to repair all property damaged during the roofing application.

B. During the roofing contractor’s performance of the work, the building owner will continue to occupy the existing building. The contractor shall take precautions to prevent the spread of dust and debris, particularly where such material may sift into the building. The roofing contractor shall provide labor and materials to construct, maintain and remove necessary temporary enclosures to prevent dust or debris in the construction area(s) from entering the remainder of the building. Take all steps to ensure no debris is blown off the building, including fencing and other debris catching systems.

C. Do not overload any portion of the building, either by use of or placement of equipment, storage of debris, or storage of materials.

D. Protect against fire and flame spread. Maintain proper and adequate fire extinguishers within fifty (50) feet of any open flames. If any heated or flamed application is utilized a fully charged 15 lb or larger fire extinguisher shall be on the roof at all times.

E. Take precautions to prevent drains from clogging during the roofing application. Remove debris at the completion of each day’s work and clean drains, if required. At completion, test drains to ensure the system is free running and drains are watertight. Remove strainers and plug drains in areas where work is in progress. Install flags or other telltales on plugs. Remove plugs each night and screen drain.

F. Store moisture susceptible materials above ground and protect with waterproof coverings.

G. Remove all traces of piled bulk materials and return the job site to its original condition upon completion of the work.

1.11 SAFETY

A. The contractor shall be responsible for all means and methods as they relate to safety and shall comply with all applicable OSHA, NEC, NFPA, and EPA, local, state and federal requirements. Safety shall be the responsibility of the general contractor. All related personnel shall be instructed daily to be mindful of the full time requirement to maintain a safe environment for the facility’s occupants including staff, visitors, customers and the occurrence of the general public on or near the site.

B. A system to report all accidents, injuries, and illnesses occurring on the project to the COR and the requirement to provide a copy of the contractor accident report in accordance with the contract’s accident-reporting procedures. Note: Upon notification, the COR shall contact the LO/SO or field/program safety manager and report the incident.

The Contractor shall comply with the requirements of 29 CFR, Part 1910: Occupational Safety and Health Administration (OSHA) General Industry and Health Standards and Health Standards and 29 CFR, part 1926 Construction Standards. The Contractor shall promptly correct any non-complying work or conditions. Contractor shall be responsible to ensure their work does not affect the safety of the public or employees of the Government. Neither the Government nor its representatives shall bear any responsibility for safety precautions at the project work site. If, however, in the opinion of the COR a life-threatening condition exists, the COR will orally (to be confirmed in writing) require the Contractor to immediately suspend work in the affected area until the condition is corrected. Whenever Contractor’s operations may create a hazardous condition, it shall at its sole expense, furnish, install and maintain such guards, fences, barricades, railing, light, signs, or other devices necessary to prevent accident, injury or damage to people or equipment or damage to people or equipment.

D. The contractor shall keep the project site in a neat an orderly condition at all times.

E. Five days prior to start of work contractor shall submit a safety plan, to include but not limited to, ladders, hoists, cranes, harness, open flames, wind, debris, cleanup, and emergency procedures.

1.12 WORKMANSHIP

A. Applicators installing new roof, flashing and related work shall be factory trained and approved by the manufacturer they are representing.

B. All work shall be of highest quality and in strict accordance with the manufacturer’s published specifications and to the building owner’s satisfaction.

C. There shall be a supervisor on the job site at all times while work is in progress.

1.13 QUALITY ASSURANCE

A. The EPDM membrane roofing system must achieve all local and state building code requirements and must have been successfully tested to meet or exceed the calculated uplift pressure required by the International Building Code (ASCE-7) or ANSI/SPRI WD-1.

B. The manufacturer must have a minimum of 20 years experience in the manufacturing of vulcanized thermal set sheeting.

C. Unless otherwise noted in this specification, the roofing contractor must strictly comply with the manufacturer’s current specifications and details.

D. The roofing system must be installed by an authorized and trained applicator by the manufacturer in compliance with shop drawings as approved by the manufacturer. The roofing applicator shall be thoroughly experienced and upon request be able to provide evidence of having at least seven (7) years successful experience installing single-ply EPDM roofing systems and having installed at least one (1) roofing application or several similar systems of equal or greater size within one year.

E. Provide adequate number of experienced workmen regularly engaged in this type of work who are skilled in the application techniques of the materials specified. Provide at least one thoroughly trained and experienced superintendent on the job at all times roofing work is in progress.

F. There shall be no deviations made from this specification or the approved shop drawings without the prior written approval of the COR. Any deviation from the manufacturer’s installation procedures must be supported by a written certification on the manufacturer’s letterhead and presented for the specifier’s consideration.

G. Upon completion of the installation, the applicator shall arrange for an inspection to be made by a non-sales technical representative of the membrane manufacturer in order to determine whether or not corrective work will be required before the warranty will be issued. Notify the COR seventy-two (72) hours prior to the manufacturer’s final inspection.

H. The EPDM membrane meets the CRRC (California Roof Rating Council) requirements for reflectance and emittance. When tested in accordance with ASTM C1549, material has an initial solar reflectance of .76 and a 3-year aged reflectance of .64. The material has also been tested for emittance in accordance with ASTM C1371; an initial emittance of .90 and a 3-year aged emittance of .87 were achieved.

I. The EPDM membrane meets the emittance requirements set forth by the USGBC (U. S. Green Building Council) for their LEED (Leadership in Energy and Environmental Design) Program. The material has an emittance of .91 (when tested in accordance with ASTM E408) and an SRI (solar reflectance index) of 105 (calculated using ASTM E 1980).

J. Perform Work in accordance with NRCA Roofing and Waterproofing Manual.

K. Roof Assembly Classification: Wind uplift requirement of 1-90, in accordance with FM DS 1-28.

L. Fire Rated Roof Construction: Determined in accordance with ASTM E119.

M. Roof Assembly Fire Classification: When tested in accordance with ASTM E108 and UL 790. Roof Assembly with Foam Insulation: Passes FM 4450 or UL 1256.

N. Surface Burning Characteristics: Foam Insulation: Maximum 75/450 flame spread/smoke developed index when tested in accordance with ASTM E84.

O. Do not install membrane during inclement weather or when air temperature may fall below 40 degrees F or below manufactures recommendation.

P. Professional agencies, associations, councils, institutes, codes, and standards as required or referenced by law, statue or manufactures recommendation including those listed in Appendix II are part of these contract requirements.

Q. All substitutions requests for products, equipment, materials and methods described within the contract documents shall be submitted to the COR. Substitutions request are not permitted prior to the Notice to Proceed. Substitute products will be considered when the request is submitted in writing to the COR. The COR will have seven (7) working days to approve /disapprove substitution request. Substitution request shall not result in schedule extensions. Substitution request shall include:

i. Two complete copies of the manufacturers technical data and cut sheets, with sufficient information and product data to allow the COR to make a timely decision,

ii. The reason for the substitution,

iii. A comparison of delivery time,

iv. Samples,

v. Substitutions shall meet or exceed all requirements of specified materials, products, equipment and methods described within the contract documents,

vi. Contractor shall not be entitled to extra compensation for substitution request whether approved or disapproved,

vii. If the cost of the substitution is less than the specified products, materials, equipment or methods the difference in cost shall be credit to the government.

viii Certified cost of specified and proposed products, equipment, materials and methods.

1.14 JOB CONDITIONS, CAUTIONS AND WARNINGS

A. Safety Data Sheets (SDS) must be on location at all times during the transportation, storage and application of materials.

B. When loading materials onto the roof, the contractor shall comply with the requirements of the COR to prevent overloading and possible disturbance to the building structure.

C. Proceed with roofing work only when weather conditions are in compliance with the manufacturer’s recommended limitations, and when conditions will permit the work to proceed in accordance with the manufacturer’s requirements and recommendations.

D. Proceed with work so new roofing materials are not subject to construction traffic. When necessary, new roof sections shall be protected and inspected upon completion for possible damage.

E. Provide protection for all roof areas exposed to traffic during construction.

F. The surface on which the insulation or roofing membrane is to be applied shall be clean, smooth, dry, and free of projections or contaminants that would prevent proper application of or be incompatible with the new installation, such as fins, sharp edges, foreign materials, oil and grease.

G. New roofing shall be complete and weather tight at the end of the work day.

H. Contaminants such as grease, fats and oils shall not be allowed to come in direct contact with the roofing membrane.

1.15 WARRANTY

A. Provide manufacturer’s 20 years Total System Warranty covering both labor and material with no dollar limitation. The maximum wind speed coverage shall be peak gusts of (90) measured at 10 meters above ground level. Certification is required with bid submittal indicating the manufacturer has reviewed and agreed to such wind coverage.

B. Evidence of the manufacturer’s warranty reserve shall be included as part of the project submittals for the COR’S approval.

C. Pro-rated System Warranties shall not be accepted.

PART 2 PRODUCTS

2.01 GENERAL

A. All components of the specified roofing system shall be products incorporated or accepted by EPDM manufacture as compatible.

D. Unless otherwise approved by the COR and accepted by the membrane manufacturer, all products (including insulation, fasteners, fastening plates and edgings) shall be manufactured and supplied by the roofing system manufacturer and covered by the warranty.

E. Manufacturers:

1. Carlisle Sure-White SynTec Systems.

2. Approved Equal (see section 1.13. P) F. Minimum requirements:

CCRC Initial thermal emmittance After 3 years

0.87

2.02 MEMBRANE

Furnish Sure-White 60-mil thick EPDM (Ethylene, Propylene, Diene Terpolymer) in the largest sheet possible. The membrane shall conform to the minimum physical properties of ASTM D4637. When a 10 foot wide membrane is to be used, the membrane shall be manufactured in a single panel with no factory splices to reduce splice intersections.

2.03 INSULATION/UNDERLAYMENT

A. Insulation shall be fully adhered and fasten to the substrate in accordance with the manufacturer’s published specifications.

B. Carlisle SecurShield HD Composite – Composite insulation panel comprised of ½-inch high-density Polyiso cover board (4’x8’) laminated during the manufacturing process to SecurShield rigid Polyiso roof insulation meeting ASTM C1289 Type II, Class2, Grade 3 (25 psi). 8” to 3” thick, 4’ x 4’ panels. 4’ x4’ panels shall be factory manufactured sheets, cutting of 4’ x 8’ sheets to meet the required 4’ x 4’ sheets shall not be permitted.

C. Tapered insulation sheets shall be manufactured by Carlisle and not cut in the field.

2.04 ADHESIVES, CLEANERS AND SEALANTS

All products shall be furnished by same manufacturer and specifically formulated for the intended purpose.

A. Bonding Adhesive:

B. Splicing Cement:

C. Splice Tape and Primer: Factory-Applied Tape (FAT)

D. Cleaning Solvent: Weathered Membrane Cleaner

E. Internal Seam Sealant: used with adhesive splices only

F. External Seam Sealant: Lap Sealant

G. Pocket Sealant: Pourable Sealer

H. Carlisle OlyBond 500 BA

I. Standard 90- 8-30A, EPDM x -23 Low-VOC or CAV-GRIP III Bonding Adhesive

2.05 FASTENERS AND PLATES

To be used for attachment of insulation and to provide additional membrane securement:

A. Pressure-Sensitive RUSS (Reinforced Universal Securement Strip): a 6” wide, nominal 45-mil thick clean, cured, white reinforced EPDM membrane with 3” wide Factory-Applied Tape laminated along one edge.

B. Secure roof insulation at the minimum rate of 5 Fasteners per 4' x 4' board.

2.06 METAL EDGING AND MEMBRANE TERMINATIONS

A. Termination Bar: a 1” wide and .098 inch thick extruded aluminum bar pre-punched 6” on center; incorporates a sealant ledge to support Lap Sealant or Universal Sealant and provide increased stability for membrane terminations.

B. .040 aluminum edge metal to be custom fabricated and installed to match existing edge metal. Match color, shape, size, materials, density and thickness and application methods.

PART 3 EXECUTION

3.01 GENERAL

A. Comply with the manufacturer’s published instructions for the installation of the membrane roofing system including proper substrate preparation, jobsite considerations and weather restrictions.

B. Position sheets to accommodate contours of the roof deck and shingle splices to avoid bucking water.

C. Verify that substrate is sound, clean, and free of oil, grease, and materials or substances that may impede adhesive bond.

D. Ensure that the insulation boards and adjacent materials are compatible.

E. Verify roof has adequate slope to ensure positive drainage.

F. Relocate, raise and/or move any obstacle preventing work from meeting all requirements within the contract documents. Raise and/or move any obstacle preventing work from meeting all requirements within the contract documents, including HVAC equipment, conduits, lights, security cameras, communication equipment and other obstacles or equipment on the roof.

G. Fill existing holes in roof deck prior to placing insulation. Fill with fire proof material.

3.02 INSULATION PLACEMENT

A. Install insulation or membrane underlayment over the substrate with boards butted tightly together with no joints or gaps greater than 1/4 inch. Stagger joints both horizontally and vertically if multiple layers are provided.

B. Insulation shall be placed in 4’ x 4’ sheets. Where 4’ x 4’ sheets will not fit sheet sizes shall be reduced to the next largest size practical.

C. Cover board shall be 4’ x 8’ sheets fully adhered and mechanically fasten.

D. Secure roof insulation at the minimum rate of 5 Fasteners per 4' x 4' board.

E. Sweep, Clean and Vacuum roof prior to placing insulation. Ensure roof is dry and clean of damaging debris before placing insulation.

F. Place insulation and cover board to ensure proper drainage, allowing no standing water or ponding.

3.03 MEMBRANE PLACEMENT AND BONDING

A. Unroll and position membrane without stretching. Allow the membrane to relax for approximately 1/2 hour before bonding. Fold the sheet back onto itself so half the underside of the membrane is exposed.

B. Apply the Bonding Adhesive in accordance with the manufacturer’s published instructions, to both the underside of the membrane and the substrate. Allow the adhesive to dry until it is tacky but will not string or stick to a dry finger touch.

1. Roll the coated membrane into the coated substrate while avoiding wrinkles. Brush down the bonded half of the membrane sheet with a soft bristle push broom to achieve maximum contact.

2. Fold back the unbonded half of the membrane sheet and repeat the bonding procedure.

B. Install adjoining membrane sheets in the same manner, overlapping edges not less than 4 inches or manufactures recommendation whichever is largest. Apply bonding adhesive to the splice area per manufactures recommendations.

C. When positioning membrane sheets, exercise care to locate all field splices away from low spots and out of drain sumps. All field splices should be shingled to prevent bucking of water.

3.04 MEMBRANE SPLICING

A. Tape splices must be a minimum of 2-1/2” wide using 3” wide extending 1/8” minimum to 1/2” maximum beyond the splice edge. Field splices at roof drains must be located outside the drain sump.

B. Position membrane sheet to allow for required splice overlap. Mark the bottom sheets with an indelible marker approximately 1/4” to 1/2” from the top sheet edge. The pre-marked line on the membrane edge can also be used as a guide for positioning splice tape.

C. Fold the top sheet back and clean the dry splice area (minimum 3” wide) of both membrane sheets by scrubbing with clean natural fiber rags saturated with approved Seal Primer.

D. When Factory-Applied TAPE (FAT) is not used, apply manufactures recommended tape in accordance with the manufacturer’s specifications and roll the top sheet onto the mating surface.

E. Immediately roll the splice using positive pressure when using a 2” wide steel roller. Roll across the splice edge, not parallel to it. When FAT is used, use manufacture recommended Stand-Up Seam Roller to roll parallel to the splice edge.

F. At all field splice intersections, apply Lap Sealant along the edge of the membrane splice to cover the exposed joints in each direction from the splice intersection. Install Pressure-Sensitive “T” Joint Covers or a 6” wide section (with rounded corners) of Pressure-Sensitive Flashing over the field splice intersection.

3.05 Section not used.

3.06 FLASHING

A. Wall and curb flashing shall be cured EPDM membrane. Continue the deck membrane as wall flashing where practicable.

B. Follow manufacturer’s typical flashing procedures for all wall, curb, and penetration flashing including metal edging/coping and roof drain applications.

C. .040 aluminum edge metal to be custom fabricated and installed to match existing edge metal and caps. Match color, shape, size, materials, density and thickness and application methods.

3.07 Section not used

3.08 DAILY SEAL

A. On phased roofing, when the completion of flashings and terminations is not achieved by the end of the work day, a daily seal must be performed to temporarily close the membrane to prevent water infiltration.

B. Complete an acceptable membrane seal in accordance with the manufacturer’s requirements.

3.09 CLEAN UP

A. Perform daily clean-up to collect all wrappings, empty containers, paper, and other debris from the project site. Upon completion, all debris must be disposed of in a legally acceptable manner.

B. Prior to the manufacturer’s inspection for warranty, the applicator must perform a pre-inspection to review all work and to verify all flashing has been completed as well as the application of all caulking.

3.10 PERIOD OF PERFORMANCE

A. Upon notice to proceed. Contractor shall be required to complete work within 40 calendar days.

B. Demolition and installation shall not start prior to April 1, 2020.

Project Drawings:

A. EPDM ROOF REPLACEMENT, DTD SEPTEMBER 30, 2019.

Reference Drawings:

A. Research Facilities Laboratory North & South Elev.(Arch) 1030287.

B. Research Facilities Laboratory East Elev.(Arch) 1030288 C. Research Facilities Laboratory Cross Sections(Arch) 1030289

APPENDIX 1

List Of Acronyms:

ACRONYMS

Appendix II

Professional Organizations.

PROFESSIONAL AGENCIES, ASSOCIATIONS, CODES, COUNCILS, INSTITUTES, AND STANDARDS

END OF SPECIFICATION