whiting street roof bid 06-29-20.pdf

TOWN OF NORTH ATTLEBOROUGH, MASSACHUSETTS

BOARD OF PUBLIC WORKS

MICHAEL S. THOMPSON, CHAIRMAN 49 Whiting Street, North Attleborough, MA DONALD CERRONE, VICE CHAIRMAN Telephone: (508) 695-9621

ANTHONY RINALDI JR., MEMBER

ERIC ROBBINS, MEMBER

Fax: (508) 643-0568 www.nattleboro.com

MARK L. HOLLOWELL, DIRECTOR

INVITATION TO BID

Sealed bids are invited for removal of approximately 3,850 SF of existing flat rubber roof system and replacement with a tapered slope, fully adhered 60 mil EPDM roof system with approximately 125 linear feet of 1” x 10” PVC trim board and 1” x 4” PVC shadow board for the Town of North Attleborough.

All bids are to be plainly sealed and marked on the outside of the envelope: “Whiting Street Garage Roof System Replacement”. Bids shall be submitted to the Department of Public Works Office, 49 Whiting Street, North Attleborough, Massachusetts, on or before 11:00 a.m. on Thursday, July 23, 2020 at which time the bids will be opened and read aloud. Proposals received after the time designated will be returned to the bidder, unopened.

Specifications and Proposal Forms will be available on line, beginning July 8, 2020, at:

http://www.nattleboro.com/department-of-public-works/pages/bids-rfp-and-rfq.

All bids shall be in accordance with M.G.L. including but not limited to: Ch. 149, Ch. 30, Section 39M (Bid Bond), Ch. 149, Sec. 27 (Prevailing Wage Rates), and Ch. 149, Sec. 29 (Labor and Material Bonds as applicable). The Town of North Attleborough is not obligated to accept only the lowest bid. The quality and reliability of specific equipment and materials named shall be considered.

MARK L. HOLLOWELL, DIRECTOR

DEPARTMENT OF PUBLIC WORKS

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GENERAL SPECIFICATIONS FOR

The removal of existing approximately 3,850 SF. rubber roof and installation of a tapered slope, 60 mil. EPDM roof system with approximately 125 linear feet of 1” x 10” PVC trim board and 1” x 4” PVC shadow board in a mechanically attached roof system and trim board, per the specifications below.

Each bidder shall indicate compliance with each portion of the specifications. Any deviations from the specifications shall be noted below the compliance check. No deviations shall be allowed following award of bids. The Town shall make the final determination of responsive and responsible bidders.

GENERAL CONDITIONS

1. Description:

Remove existing Flat Rubber roof and install a mechanically attached, 60 mil., EPDM roof system with approximately 125 linear feet of 1” x 10” PVC trim board and 1” x 4” PVC shadow board to existing building code, with 20 year Manufacturer’s Warranty on labor and materials.

2. Instructions to Bidders:

All proposals are to be made on a form attached herein. All bidders shall complete each compliance component in the contract documents. The bidder shall sign the proposal correctly. The Bidder shall submit the name of the Materials Manufacturer and detailed specifications, including warranty information with the bid. If bid is made by a firm with a partnership, the name of each member must be given. The Town reserves the right to accept or reject any or all bids or to make an award deemed to be in the best interest of the Town.

Appointments for viewing the roof area can be made by calling the Department of Public Works, at 1-508-695-9621

3. Bidding Requirements:

All bidders shall be responsible for examination of the proposed work before submitting their bid to determine conditions that may affect proper execution of the work. The bidder shall submit any questions or comments, in writing to the Director no less than five business days prior to the bid opening. All dimensions and quantities shall be determined or verified by the Contractor for bidding purposes. Prospective bidder may make an appointment to view the roof by calling 508- 695-9621 for an appointment.

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4. Insurance:

The Contractor shall carry Workmen’s Compensation, Public Liability, and Property Damage insurance and shall furnish the Town a Certificate of Insurance annually.

The Contractor and his/her subcontractors shall furnish evidence to the Director of Public Works that he/she carries the following insurance:

Workmen’s Compensation - As Required by State Law Public Liability- $100,000/$300,000 (each occurrence/Aggregate) Property Damage- $100,000/$300,000 (each occurrence/Aggregate) Includes insurance for ALL Vehicles.

5. Minimum Wages:

The minimum wages to be paid by the Contractor shall be in accordance with the schedule of wages submitted by the Department of Labor and Industry said schedule being a part of this contract and shall continue to be the rate or rates of wages for all employees during the life of the contract.

6. Contract Bond Required:

A payment bond will be required for the faithful performance of the Contractor; said bond to be 50% of the Contract price. A performance bond will be required for the faithful performance of the Contractor; said bond to be 100% of the Contract price. The surety shall be with a surety company satisfactory to the Board of Public Works. The relationship between the Town and the successful bidder shall be that of an independent contractor-owner.

7. General Scope:

The work includes but is not limited to:

PART 1- GENERAL

The Town of North Attlebrough is seeking bids for the removal of an existing rubber roof to existing deck. Securing any loose sheathing, and installation of a complete roofing system as described below including all material, equipment, and labor to complete the work as described and following manufacturer’s recommendations.

GENERAL NOTES

A. Preceding job start-up, contractor shall determine to his satisfaction that all specifications contained herein are workable.

B. Contractor will perform all work by competent, trained, and properly equipped personnel in strict accordance with good roofing practices and applicable industry standards.

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C. Contractor will observe all published safety prevention policies and practices relating to application of roofing system and related work. All federal, state, and local codes shall be followed. Any building permits required shall be obtained by the Contractor and reimbursed by the Town.

1.01 SCOPE OF WORK

A. Work under this section covers the installation of a new Fully Adhered EPDM roofing system on the Water Garage Building (approximately 3,850 SF). The Contractor shall include all related items of work as noted herein required to complete the specified elements of work and provide the necessary warranties for this work.

B. Any material removal shall comply with state and local codes and requirements and shall be disposed of in a legal manner at the Contractor’s expense.

C. Contractor shall be responsible for all building dimensions and the materials required to complete scope of work.

D. The Scope of Work is as follows:

Water Garage Building:

1. Remove and dispose of existing flat rubber roof to the existing deck. Protect building and surrounding grounds by use of large tarps or equal means of protection. The existing decking will remain and must be left undamaged and protected from weather.

Remove and dispose of existing trim board. All new and existing roofing, insulation, flashings, adhesive cans, metal work, and general construction debris shall be disposed of properly following all applicable local, state, and federal regulations. Rain gutters shall be removed and stored. Other demolition and preparation items not mentioned here but normally expected with this type of installation shall be included.

2. Tear-off and remove existing roof system completely down to wood deck.

3. Install one layer of new 1/2” Dens Deck (or approved equal) over entire roof deck.

4. Install new tapered polyiso insulation to achieve proper drainage.

5. Install new ½” IsoGard HD coverboard (or approved equal) with quantity 12 HD

Fasteners per 4’ x 8’ board.

6. Fully adhere new .060 Firestone RubberGard LSFR EPDM (or approved equal).

7. Install new 24 gauge edge metal per manufacturer’s specifications.

8. Reinstall gutters.

1.02 DEFINITIONS

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

B American Society for Testing and Materials ( ASTM ): 1916 Race Street, Philadelphia, PA 19103

1.03 SYSTEM DESCRIPTION

A. Non-reinforced elastomeric & thermoplastic sheet roofing membrane fully adhered to polyisocyanurate HD cover board that is mechanically attached over existing roof and into wood/steel deck.

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1.04 SUBMITTALS

A. Product Data:

1. Submit copies of Technical Information Sheets (TIS) for primary products used including roof membrane, splice tape, fasteners, and insulation.

1.05 QUALITY ASSURANCE

A. Manufacturer:

1. Company specializing in manufacturing the roofing membrane specified in this section with ten years of manufacturing experience.

2. Manufacturer must be able to provide the project with the membrane and

Isocyanurate insulation that is produced in their facilities.

B. Applicator:

1. Shall be a certified licensed contractor of the manufacturer.

2. Shall have a fully staffed office within 50 miles of the job site.

3. Shall have at least five years’ experience in installing specified or approved system.

1.06 REGULATORY REQUIREMENTS

A. Conform to applicable local building code requirements.

B. Factory Mutual Research Corporation (FM): Roof Assembly Classification, FM

Construction Bulletin 1-28 and 1-29.

C. Obtain any required building permits. The Town shall pay any permit or inspection fees.

1.07 QUALITY INSPECTION/OBSERVATION

A. Inspection by Manufacturer: Provide a final inspection of the roofing system by a Technical Representative employed by roofing system manufacturer.

1. Technical Representative shall not perform any sales functions.

2. Contractor shall complete any necessary repairs required for issuance of warranty.

1.08 PRE-INSTALLATION CONFERENCE

A. Before start of roofing work, Contractor attend a conference to provide a schedule and methodology of the project.

1.09 DELIVERY, STORAGE AND HANDLING

A. Deliver products in manufacturer's original containers dry, undamaged, seals and labels intact and legible.

B. Store all materials clear of ground and moisture with weather protective covering.

C. Keep all combustible materials away from ALL ignition sources.

1.10 ENVIRONMENTAL REQUIREMENTS

A. Install roofing membrane only when surfaces are clean, dry, smooth and free of snow or ice.

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B. Do not apply roofing membrane during inclement weather or when ambient conditions will not allow proper application.

1.11 WARRANTY

A. Type/Term:

1. Provide 20-year system and material warranty

B. Coverage:

1. Limit of Liability: No dollar limitation.

2. Scope of Coverage: Repair leaks in the roofing system caused by:

a. Ordinary wear and tear of the elements.

b. Manufacturing defect in Firestone brand materials.

c. Defective workmanship used to install these materials.

d. Damage due to winds up to 52 mph.

3. Not Covered:

a. Damage due to winds in excess of 52 mph.

b. Damage due to hurricanes or tornadoes.

c. Hail.

d. Intentional damage.

C. The Awarded Contractor shall provide a 1-Year Warranty on all work performed and materials provided that are not covered under the 20-year Roof System and Material Warranty.

PART 2- PRODUCTS

2.01 NAILERS FOR FLANGES AND ROOF ACCESSORIES

A. Description: Structural Grade No. 2 or better Southern Pine, Douglas Fir, or Exterior Grade plywood. All wood shall be pressure treated for rot resistance.

1. Nailer width: Minimum 3 1/2 in. (nominal) wide or as wide as the nailing flange of each roof accessory.

2. Nailer thickness: Thickness of roof insulation.

B. Reference Standards:

1. Southern Pines: PS 20; SPIB Grading Rules.

2. Western Woods: PS 20; WWPA Grading Rules.

3. Plywood: PS 1; APA Grade Stamps.

4. Pressure preservative treatment: AWPB LP2.

2.02 MANUFACTURERS - MEMBRANE MATERIALS

A. Firestone Fully Adhered EPDM roof system (or approved equal):

Non-reinforced elastomeric sheet roofing membrane adhered to polyisocyanurate insulation.

2.03 EPDM SHEET ROOFING AND FLASHING MEMBRANE

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A. Membrane: Non-reinforced, cured, synthetic single-ply membrane composed of Ethylene Propylene Diene Terpolymer (EPDM) conforming to the following physical properties:

1. Thickness: .060 inch (1.499 mm)

2. Tensile Strength: 1454 (10.0) PSI(MPa)

3. Elongation: 622%

4. Color: Black

5. Acceptable Product: RubberGard LSFR EPDM by Firestone (or approved equal)

B. 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

2.04 POLYISOCYANURATE INSULATION

A. Description: Roof insulation consisting of closed cell polyisocyanurate foam core and a perforated black glass reinforced mat laminated to the face.

1. Nominal Thickness: 1/2”

2. Nominal Size: 48” x 96”.

B. Reference Standards:

1. FS HH-I-1972/Gen.

2. FS HH-I-1973/3.

3. ASTM C 209 - Water Absorption.

4. ASTM E 96 - Water Vapor Transmission of Materials.

5. ASTM D 1621 - Compressive Strength.

6. ASTM D 1622 - Density.

7. ASTM E 84 - Flame Spread

2.05 INSULATION FASTENER

A. Insulation fastener

1. Description: Heavy Duty fastener with 4-coat fluorocarbon polymer coating and drill point tip capable of penetrating 20 gauge steel. Length shall be sufficient to penetrate deck a minimum of 3/4” for steel and 1” for wood and concrete.

2. Reference Standard:

SAE 1022, Heat Treated

2.06 METAL FLASHING

A. Edge Metal and/or Coping

1. Description: Provide 24 gauge steel edge metal and coping. Size to facilitate manufacturer’s requirements for proper edge termination. Color to be selected by owner.

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PART 3- EXECUTION

3.01 EXAMINATION

A. Examine roof deck to determine that it is sufficiently rigid to support roofers and their mechanical equipment and that deflection will not strain or rupture roof components or deform deck.

B. Verify that surfaces and site conditions are ready to receive work. Correct defects in the substrate before commencing with roofing work.

C. Examine roof substrate to verify that it is properly sloped to drains.

D. Start work with sealants and adhesives at 60° - 80° F.

E. The surface must be clean, dry, smooth, free of sharp edges, fins, loose or foreign materials, oil, grease and other materials which may damage the membrane. All roughened surfaces which could cause damage shall be properly repaired before proceeding.

F. All surface voids of the immediate substrate greater than 1/4" wide must be properly filled with an acceptable insulation or suitable fill material.

3.02 PROTECTION OF OTHER WORK

A. Protect metal, glass, plastic, and painted surfaces from adhesives and sealants.

B. Protect neighboring work, property, cars, and persons from spills and overspray from adhesives, sealants and coatings.

C. Protect finished areas of the roofing system from roofing related work traffic and traffic by other trades.

3.03 MATERIAL STORAGE AND HANDLING

A. Keep all adhesives, sealants, primers and cleaning materials away from all sources of ignition.

B. Consult container labels and Material Safety Data Sheets (MSDS) for specific safety instructions.

3.04 WOOD NAILER LOCATION AND INSTALLATION

A. Total wood nailer height shall match the total thickness of insulation being used and shall be installed with a 1/8" gap between each length and at each change of direction.

B. Wood nailers shall be firmly fastened to the deck. Mechanically fasten wood nailers to resist a force of 200 lbs. per lineal foot.

3.05 INSULATION ATTACHMENT:

A. Using the Heavy Duty fastener and insulation plate engage fastener through insulation into the wood/steel deck at the depth and rate specified by the manufacturer.

3.06 MEMBRANE PLACEMENT AND ATTACHMENT

A. Beginning at the low point of the roof, place the membrane without stretching over the acceptable substrate and allow to relax a minimum of 30 minutes before attachment or splicing.

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B. After making sure the sheet is placed in its final position, fold it back evenly onto itself so as to expose the underside.

C. Sweep the mating surface of the membrane with a stiff broom to remove excess dusting agent (if any) or other contaminants from the mating surface.

D. Apply bonding adhesive at about the same time to both the exposed underside of the sheet and the substrate to which it will be adhered so as to allow approximately the same drying time. Apply bonding adhesive so to provide an even and uniform film thickness.

Do not apply bonding adhesive to areas that will be subsequently spliced.

E. Allow bonding adhesive to flash off until tacky. Touch the adhesive surface with a clean, dry finger to be certain that the adhesive does not stick or string. As you are touching the adhesive, pushing straight down to check for stringing, also push forward on the adhesive at an angle to ensure that the adhesive is ready throughout its thickness. If either motion exposes wet or stringy adhesive when the finger is lifted, then it is not ready for mating.

F. Starting at the fold, roll the previously coated portion of the sheet into the coated substrate slowly and evenly so as to minimize wrinkles.

G. Compress the bonded half of the sheet to the substrate with a stiff push broom.

H. Fold the unadhered half of the membrane sheet back onto itself, and repeat the bonding procedure to complete the bonding of the sheet.

3.07 FLASHING - PENETRATIONS

A. General:

1. Remove all existing flashings (i.e. lead, asphalt, mastic, etc.).

2. Flash all penetrations passing through the membrane.

3. The flashing seal must be made directly to the penetration.

B. Pipes, Round Supports, etc.

1. Flash with Pre-Molded Pipe Flashings where practical.

2. Flash using FormFlash (or approved equal) when Pre-Molded Pipe Flashing is not practical.

C. Structural Steel Tubing: Use a field fabricated pipe flashing detail provided that the minimum corner radius is greater than 1/4" and the longest side of the tube does not exceed 12". When the tube exceeds 12" use a standard curb detail.

D. Pipe Clusters and Unusual Shaped Penetrations:

1. Fabricate penetration pockets to allow a minimum clearance of 1" between the penetration and all sides.

2. Secure penetration pockets per manufacturer’s details.

3. Fill penetration pockets with Pourable Sealer, so as to shed water. Pourable Sealer shall be a minimum of 2" deep.

3.08 FLASHING - WALLS, PARAPETS, MECHANICAL EQUIPMENT CURBS, SKYLIGHTS, ETC.

A. General:

Using the longest pieces practical, flash all walls, parapets, curbs, etc., a minimum of 8” high per manufacturer’s details.

Note: Saw cut reglet may be required at brick wall base flashings to

B. Evaluate Substrate:

Evaluate the substrate and overlay per Manufacturer specifications as necessary.

C. Contractor shall

1. Remove loose or unsecured flashings.

2. Remove mineral surfaced or epdm coated flashings.

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3. Remove excessive asphalt to provide a smooth, sound surface for new flashings.

D. Complete the splice between flashing and the main roof sheet with splice adhesive before adhering flashing to the vertical surface. Provide lap splices in accordance with manufacture’s details.

E. Apply bonding adhesive at about the same time to both the flashing and the surface to which it is being bonded so as to allow approximately the same flash off time.

F. Allow bonding adhesive to flash off until tacky. Touch the adhesive surface with a clean, dry finger to be certain that the adhesive does not stick or string. While touching the adhesive, pushing straight down to check for stringing, also push forward on the adhesive at an angle to ensure that the adhesive is ready throughout its thickness. If either motion exposes wet or stringy adhesive when the finger is lifted, then it is not ready for mating.

Flash off time will vary depending on ambient air conditions.

G. Roll the flashing into the adhesive evenly and carefully so as to minimize wrinkles.

H. Ensure proper contact of flashing by brooming in place.

3.09 TEMPORARY CLOSURE

A. Temporary closures which ensure that moisture does not damage any completed section of the new roofing system are the responsibility of the roofing contractor. Completion of flashings, terminations, and temporary closures shall be completed as required to provide a watertight condition.

3.10 FIELD QUALITY CONTROL

A. Field inspection and testing will be performed as required by the manufacturer.

B. Correct identified defects or irregularities.

3.11 CLEAN-UP

A. Clean all contaminants from building and surrounding areas.

B. Remove trash, debris, equipment from project site and surrounding areas.

C. Repair or replace damaged building components or surrounding areas to the satisfaction of the building owner.

3.12 COMPLETION

A. Prior to leaving the site, the owner/project manager and the Contractor shall review the work. All defects noted, non-compliances with the specifications, and the recommendations of the manufacturer shall be itemized in a punch list.

B. The Contractor must correct these items immediately to the satisfaction of the owner/project manager. All work done and all materials furnished are to meet with the approval of the

Director of Public Works (The Director), or his designee. The acceptance of the completed work is to be made by the Director or his designee.

C. All warranties, as required in his specification, shall be submitted and accepted prior to payment of 5% retainage.

PART 4- PAYMENT

4.01 PAYMENT UPON COMPLETION

A. When the job is completed and has been accepted by the Director of Public Works as

Whiting Street Garage Roof System Replacement Page 11 being done according to Approved Specifications, full payment will be made, minus 5% retainage for up to 75 days for the addressing of any punch-list items.

END OF SECTION

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PROPOSAL FORM

ITEM 1: 3,850 s.f. of existing flat rubber roof system and replacement with a tapered slope, fully adhered 60mil EPDM roof system

EPDM Roofing:

3,850 s.f x $_____________per s.f. = $____________________ Total

Name of EPDM Roofing Manufacturer_____________________________________________

Cut-sheet of Roofing Product Provided (required) YES NO

Copy of Manufacturer’s 20 Year Warranty provided (required) YES NO

ITEM 2 A & B:Remove existing trim board and replace with 1” x 10” pvc trim board and 1” x 4” shadow board.

2.A 1”x10” Trim Board:

125 l.f. x $_____________per l.f. = $____________________ Total

2 B 1”x 4”” Shadow Board:

125 l.f. x $_____________per l.f. = $____________________ Total

TOTAL BID PRICE: $____________________

Total Items 1 and 2

BID PRICE IN WRITING: _________________________________________________

NAME OF BIDDER: _________________________________________________

ADDRESS: _________________________________________________

SIGNATURE: _________________________________________________

DATE: _________________________________________________

PHONE: _________________________________________________

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COMMONWEALTH OF MASSACHUSETTS

CERTIFICATE OF NON-COLLUSION

The undersigned certifies, under penalties of perjury, that this bid or proposal has been made and submitted in good faith and without collusion or fraud with any other person. As used in this certification, the word “person” shall mean any natural person, business, partnership, corporation, union, committee, club, or other organization, entity, or group of individuals.

TAX COMPLIANCE CERTIFICATION

Pursuant to M.G.L. c. 62C, Section 49A, I certify under the penalties of perjury that, to the best of my knowledge and belief, I am in compliance with all laws of the Commonwealth relating to taxes, reporting of employees and contractors, and withholding and remitting child support.

Signature of Individual Submitting Bid or Proposal___________________________

Title:______________________________________________________________

Name of Business:___________________________________________________

Address:_ __________________________________________________________

Telephone:_________________________________________________________

Social Security # or Federal Identification #: _______________________________

Approval of a contract or other agreement will not be granted unless the applicant signs this certification form.

Your Social Security Number or Federal Identification Number will be furnished to the Massachusetts Department of Revenue (DOR) to determine whether you have met tax filing or tax payment obligations. The Town is required to furnish a list to the DOR at the end of its fiscal year, showing the vendors to whom more than $5,000 is paid during the 12 months ending June 30. Providers who fail to correct their non-filing or delinquency will not have a contract or other agreement issued, renewed, or extended. This request is made under the authority of Massachusetts General Laws, Chapter 62C, Section 49a.

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CORPORATE CERTIFICATE OF AUTHORITY

I,_____________________________________,_________________________________ (Clerk or Secretary as the case may be) of the _______________________________________________________hereby certify that a meeting of the Board of Directors of said Corporation was duly held on the__________________day of____________________, 20________ at which a quorum was present and voting and that the following vote was adopted:

"VOTED: that____________________________, ______________________________ (Officer Authorized) (Title of Officer) be and he is authorized for and on behalf of the Corporation to approve, sign, affix the Corporate Seal and deliver to the Town of North Attleborough a bond in the sum of the full amount of the Proposal, with a surety company satisfactory to the Owner, as surety will be required for the faithful performance of the Contract; and he is also hereby authorized for and on behalf of the Corporation to approve, sign, affix the Corporate Seal and deliver to the Town of North Attleborough the Contract presented to the meeting for the furnishing of the materials, supplies and services called for therein; the execution, affixing the Corporate Seal and delivery of said Contract and bond by the within named officer shall be deemed to be the document to be approved, signed, the Corporate Seal affixed and delivered as herein authorized."

I further certify that ______________________________________ was duly elected (Officer named in vote)

_______________________________of said Corporation and that such election and the (Title of Officer in vote) foregoing vote remain in full force and effect this ________________ day of ___________, 2020.

(Clerk or Secretary as the case may be)