36C24422B0003 0002.docx

5. PROJECT NUMBER (if applicable)

CODE

7. ADMINISTERED BY

2. AMENDMENT/MODIFICATION NUMBER

CODE

6. ISSUED BY

8. NAME AND ADDRESS OF CONTRACTOR

4. REQUISITION/PURCHASE REQ. NUMBER

3. EFFECTIVE DATE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED

PAGE OF PAGES

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED

BPA NO.

1. CONTRACT ID CODE

FACILITY CODE

CODE

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

E. IMPORTANT:

is extended,

(a) By completing Items 8 and 15, and returning __________ copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY is not extended.

12. ACCOUNTING AND APPROPRIATION DATA

(REV. 11/2016)

is required to sign this document and return ___________ copies to the issuing office.

is not, A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER NO. IN ITEM 10A.

15C. DATE SIGNED

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER

Contractor

16C. DATE SIGNED

14. DESCRIPTION OF AMENDMENT/MODIFICATION

16B. UNITED STATES OF AMERICA

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER

16A. NAME AND TITLE OF CONTRACTING OFFICER

15B. CONTRACTOR/OFFEROR

STANDARD FORM 30

PREVIOUS EDITION NOT USABLE

Prescribed by GSA - FAR (48 CFR) 53.243 (Type or print) (Type or print) (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

(Number, street, county, State and ZIP Code) (If other than Item 6) (Specify type of modification and authority) (such as changes in paying office, appropriation date, etc.)

(If required)

(SEE ITEM 11)

(SEE ITEM 13)

(X)

CHECK

ONE

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS,

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

(Signature of person authorized to sign) (Signature of Contracting Officer) 693-22-2-594-0019 693-22-101 00244 Department of Veterans Affairs Network Contracting Office 4 Wilkes-Barre VAMC Acquisitions (049E) 1111 East End Blvd Wilkes-Barre PA 18711 00244 Department of Veterans Affairs Network Contracting Office 4 Wilkes-Barre VAMC Acquisitions (049E) 1111 East End Blvd Wilkes-Barre PA 18711 To all Offerors/Bidders

36C24422B0003 03-25-2022

X X X May 5, 2022 4:00 PM X The purpose of this modification is to extend the closing date to May 5, 2022 and provide additional project information.

Answers to questions from the site visits are provided.

· Updated Specs Section 075323 provided with this amendment.

· Wood blocking need to be installed around all of the Parapet walls.

· There can be NO garbage shoot from the top of the building into a dumpster. Garbage can be carefully stack at one location and secured down from any wind blowing debris off the roof.

· Building Height: Approximately 60-feet tall

· Membrane: 60-mil VersiGard Non-Reinforced EPDM membrane adhered with CAV-GRIP™ 3V Low-VOC Adhesive/Primer.

· Cover Board: 1/2” SecurShield™ HD [4'x 4' boards] adhered with Flexible DASH™ Adhesive at 4" on center bead spacing in the field, perimeter and corners.

· Base Sheet: SureMB 90 Base Ply mechanically attached with Dual Prong Base Sheet Fasteners at 9” on center in the laps with two rows staggered at 9” on center in the field. Minimum pullout value shall be 70-lbs. per base sheet fastener.

· Deck: Tear off to Gypsum deck

The roofing assembly described herein, represents Versico’s minimum warranty requirements. It is not intended to modify, negate or alter any requirements dictated by the specifier or mandated by the building code or the building owner’s insurer. Versico’s review and inspection are strictly for the purpose of issuing the Versico warranty.

System enhancements pertaining, but not limited, to membrane thickness, insulation type and thickness, flashing height, slope requirements and membrane terminations [beyond those required by Versico] are to be complied with when specified unless approved by the Architect / Consultant. These conditions are considered above and beyond the scope of Versico review and take precedence.

Upon final inspection and acceptance by a Versico Field Service Representative confirming that the roof system has been installed in accordance with Versico’s Specifications, Versico will issue a 20-year warranty with 90-MPH wind speed coverage. Unless purchased or supplied through Versico, please note that performance, integrity, and impact of products by others is not included under coverage of the Versico Warranty.

Section 075323 Ethylene-Propylene-Diene-Monomer Roofing - Verisco

PART 1 GENERAL

SECTION INCLUDES

Adhered roof system with ethylene-propylene-diene-monomer (EPDM) roofing membrane.

Vapor retarder.

Cover boards.

RELATED REQUIREMENTS

Section 070150.19 - Preparation for Re-Roofing.

Section 076200 - Sheet Metal Flashing and Trim: Counterflashings and reglets.

REFERENCE STANDARDS

ASCE 7 - Minimum Design Loads and Associated Criteria for Buildings and Other Structures Most Recent Edition Cited by Referring Code or Reference Standard.

ASTM C1289 - Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board 2022.

ASTM C1325 - Standard Specification for Fiber-Mat Reinforced Cementitious Backer Units 2021.

ASTM D4637/D4637M - Standard Specification for EPDM Sheet Used in Single-Ply Roof Membrane 2015 (Reapproved 2021).

ASTM D6163/D6163M - Standard Specification for Styrene Butadiene Styrene (SBS) Modified Bituminous Sheet Materials Using Glass Fiber Reinforcements 2021.

FM (AG) - FM Approval Guide current edition.

UL 790 - Standard for Standard Test Methods for Fire Tests of Roof Coverings Current Edition, Including All Revisions.

SUBMITTALS

See Section 013000 - Administrative Requirements for submittal procedures.

Product Data: Provide manufacturer's written information listed below.

Product data indicating membrane materials, flashing materials, insulation, vapor retarder, surfacing, and fasteners.

Warranty Documentation.

Submit manufacturer warranty and ensure that forms have been completed in Owner's name and registered with manufacturer.

Submit installer's certification that installation complies with required warranty conditions for waterproofing membrane.

QUALITY ASSURANCE

Manufacturer Qualifications: Company specializing in manufacturing the products specified in this section with at least twenty years of documented experience.

Installer Qualifications: Company specializing in performing work of type specified and with at least five years documented experience.

Approved by membrane manufacturer.

DELIVERY, STORAGE, AND HANDLING

See Section 017419 - Construction Waste Management and Disposal for packaging waste requirements.

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

Protect foam insulation from direct exposure to sunlight.

Provide Safety Data Sheets (SDS) at project site during transportation, storage, and installation of materials.

Comply with requirements from Owner to prevent overloading or disturbance of structure when loading materials onto roof.

FIELD CONDITIONS

Do not apply roofing membrane during unsuitable weather, and refer to manufacturer's written installation instructions.

Do not apply roofing membrane when ambient temperature is below 40 degrees F (5 degrees C) or above [___] degrees F ([___] degrees C).

Do not apply roofing membrane to damp or frozen deck surface or when precipitation is expected or occurring.

Do not expose materials vulnerable to water or sun damage in quantities greater than can be weatherproofed that same day.

Proceed with work so new roofing materials are not subject to construction traffic as work progresses.

Do not allow grease, oils, fats, or other contaminants to come into direct contact with roofing membrane.

WARRANTY

See Section 017800 - Closeout Submittals for additional warranty requirements.

System Warranty: Provide manufacturer's system warranty agreeing to repair or replace roofing membrane that leaks or is damaged due to wind or other natural causes.

System Warranty Term: 20 years.

For repair and replacement include costs of both material and labor in warranty.

PART 2 PRODUCTS

MANUFACTURER

Versico Roofing Systems; [_____]: www.versico.com/#sle.

ROOFING APPLICATIONS

Ethylene-Propylene-Diene-Monomer (EPDM) Membrane Roofing: Single-ply membrane.

Adhered, over insulation.

PERFORMANCE / DESIGN CRITERIA

Roof Covering External Fire Resistance Classification: Class A when tested in accordance to UL 790.

Wind Uplift:

Designed to withstand wind uplift forces calculated in accordance with ASCE 7.

Design Wind Speed: In accordance with local building code and authorities having jurisdiction (AHJ).

Drainage: No standing water within 48 hours after precipitation.

ROOFING MEMBRANE MATERIALS

Single Source Responsibility: Provide and install products from single source.

Base Sheet: ASTM D6163/D6163M, Type I, Grade S, glass-fiber reinforced, modified SBS sheet.

Products:

Versico Roofing Systems; SureMB 90 Base Sheet.

Membrane: Ethylene-propylene-diene-monomer (EPDM); ASTM D4637/D4637M, Type I - Non-Reinforced.

Membrane Thickness: 60 mils, 0.060 inch (1.5 mm), minimum.

Sheet Width: Factory fabricated into largest sheets possible.

Color: Black.

Products:

Versico Roofing Systems; VersiGard Non-Reinforced EPDM.

COVER BOARDS

Cover Board: Cement roof board, complying with ASTM C1325.

Board Size: [____] by ___ inches (___ by ___ mm).

Board Thickness: 1/2 inch (13 mm).

Cover Board: Polyisocyanurate (ISO) foam insulation complying with ASTM C1289, Type II, Class 4 with glass fiber reinforced facers on both sides, and Grade 1 with 80 psi (551 kPa), minimum, compressive strength.

Board Thickness: 1/2 inch (12.7 mm).

Products:

Versico Roofing Systems; SecurShield HD Polyiso.

ACCESSORIES

Prefabricated Flashing Accessories:

See Section 076200 for metal counterflashing and trim information.

Corners and Seams:

Inside/Outside Corner: 60 mil, 0.060 inch (1.5 mm) thick, 7 by 9 inches (178 by 229 mm) precut, uncured EPDM with 30 mil, 0.030 inch (0.76 mm) thick factory-applied tape.

Products:

Versico Roofing Systems; VersiGard.

Curb Flashing: 60 mil, 0.060 inch (1.5 mm) thick, 20 inches (508 mm) wide, cured EPDM with 30 mil, 0.030 inch (0.76 mm) thick by 5 inches (127 mm) wide factory-applied tape along one edge.

Products:

Cured Cover Strip: 40 mil, 0.040 inch (1.0 mm) thick, cured EPDM laminated to 30 mil, 0.030 inch (0.76 mm) thick factory-applied tape.

Products:

Versico Roofing Systems; VersiGard Quick-Applied.

T-Joint Covers: 40 mil, 0.040 inch (1.0 mm) thick, uncured EPDM laminated to 30 mil, 0.030 inch (0.76 mm) thick factory-applied tape.

Products:

Versico Roofing Systems; VersiGard Quick-Applied.

Uncured Flashing: 60 mils, 0.060 inch (1.5 mm) thick, uncured EPDM laminated to 30 mil, 0.030 inch (0.76 mm) thick factory-applied tape.

Products:

Versico Roofing Systems; VersiGard Quick-Applied.

Penetrations: Same material as membrane, with manufacturer's standard cut-outs, rigid inserts, clamping rings, and flanges.

Pipe Seals: Provide factory-applied tape on deck flange.

Products:

Sealant Pockets: Same material as membrane, with manufacturer's standard accessories, in manufacturer's standard configuration.

Pourable Sealant Pocket: 2 inches (51 mm) wide plastic support strip with factory-applied, adhesive-backed uncured EPDM flashing.

Pocket Diameter: 4 inch (102 mm), nominal.

Products:

Versico Roofing Systems; VersiGard Quick-Applied.

Reinforced Termination Strip (RTS): 45 mils, 0.045 inch (1.1 mm) thick, reinforced EPDM membrane with 3-inch (76-mm) wide by 30 mils, 0.030 inch (0.76 mm) thick cured synthetic rubber.

Width: 6 inches (152 mm), nominal.

Pressure-sensitive adhesive laminated to one edge.

Products:

Versico Roofing Systems; VersiGard Quick-Applied.

Insulation Adhesive: Two component polyurethane, expanding foam.

Products:

Versico Roofing Systems; Flexible DASH Dual Tanks.

Versico Roofing Systems; Flexible DASH 5-Gallon Jug.

Fasteners: Appropriate for application indicated as recommended and approved by membrane manufacturer.

Length as required for thickness of membrane and insulation material and penetration of deck substrate; with metal washers.

Fasteners, Wood/Steel Drill-in: Corrosion-resistant #15 threaded drill-in fastener with #3 Phillips drive for attachment through fastening plate into steel with 22 gauge, 0.0299 inch (0.76 mm) or greater thickness, and wood plank or CDX plywood roof decks with 15/32 inch (12 mm) or greater thickness.

Products:

Versico Roofing Systems; HPV Fasteners.

Base Sheet Fasteners and Plates: Manufacturer's pre-assembled, 1.8 inch (46 mm) long, galvanized steel tube and 2.7 inch (69 mm) diameter galvalume plate with high tensile steel wire locking staple.

FM (AG) listed and labeled.

Products:

Versico Roofing Systems; Dual Prong Base Sheet Fasteners.

Metal, Seam Fastening Plates: Galvalume coated metal plate, 22 gauge, 0.0366 inch (0.853 mm) minimum thickness, with 2 inch (51 mm) nominal diameter, used for insulation attachment on mechanically fastened systems or membrane securement at angle changes on adhered systems with appropriate fastener.

Products:

Versico Roofing Systems; 2 Inch Seam Fastening Plates.

Membrane Adhesive: As recommended by membrane manufacturer.

Seam Tape: Black colored, 3-inch (76-mm) or 6-inch (152-mm) wide seam tape, 100 ft (30.5 m) long.

Products:

Versico Roofing Systems; VersiGard QA (Quick-Applied) Seam Tape.

Bonding Adhesive/Primer: Low-VOC, TPO and EPDM membrane bonding adhesive, rubber/solvent blend base, and light green colored.

Products:

Versico Roofing Systems; CAV-GRIP 3V Low-VOC Adhesive/Primer.

Sealants: As recommended by membrane manufacturer.

Lap Sealant: Butyl-based contact cement, black or white colored.

Water Cut-Off Mastic Sealant: One-component, low-viscosity, self-wetting, butyl-blend mastic sealant used between membranes terminated with compression-based seal.

Products:

Versico Roofing Systems; G-500 CM Water Cut-Off Mastic.

Sealant: One-component, 100 percent solids, solvent-free, polyether sealant used to provide weather-tight seal.

Products:

Versico Roofing Systems; Universal Single-Ply Sealant.

Pourable Sealant: One-component, moisture curing, elastomeric polyether sealant, black colored.

Products:

Versico Roofing Systems; One-Part Pourable Sealant.

Membrane Cleaner: Manufacturer's standard, clear, and solvent-based membrane cleaner.

Applications: Used for cleaning in-service and new EPDM black or white membrane and TPO membrane in preparation for application of primer, adhesives, seam tape, and flashing.

Products:

Versico Roofing Systems; Weathered Membrane Cleaner.

Primer: Manufacturer's recommended product.

Primer: Solvent-based and used for one-step priming of EPDM or TPO membrane surfaces.

Products:

Versico Roofing Systems; Low-VOC EPDM and TPO Primer.

PART 3 EXECUTION

VERIFICATION OF CONDITIONS

Verify that surfaces and site conditions are ready to receive work.

Verify deck is supported and secure.

Verify deck is clean and smooth, flat, free of depressions, waves, or projections, properly sloped and suitable for installation of roof system.

Verify deck surfaces are dry and free of snow or ice.

Verify that roof openings, curbs, and penetrations through roof are solidly set, and cant strips, nailing strips, and reglets are in place.

SURFACE PREPARATION

Clean substrate thoroughly prior to roof application.

See Section 070150.19 for additional re-roofing preparation information.

INSTALLATION - GENERAL

Install roofing system in accordance with manufacturer's instructions, as well as NRCA (RM) and NRCA (WM) applicable requirements.

Application of roofing membrane during unsuitable weather is not permitted.

Application of roofing membrane when ambient temperature is outside temperature range recommended by manufacturer is not permitted.

Application of roofing membrane to damp or frozen deck surface or when precipitation is expected or occurring is not permitted.

Exposing materials vulnerable to water or sun damage in quantities greater than can be weatherproofed the same day is not permitted.

INSULATION APPLICATION

Attachment of Insulation:

Attachment of Insulation:

Embed first layer of insulation in full bed of adhesive in accordance with roofing and insulation manufacturer's instructions.

Installing wet, damaged, or warped insulation boards is not permitted.

Apply subsequent layers of insulation with joints staggered minimum 6 inches (152 mm) from joints of preceding layer.

Apply boards with edges in moderate contact without forcing, and with gap between boards no greater than 1/4 inch (6 mm) wide; cut insulation to fit neatly to perimeter blocking and around penetrations through roof.

Only apply quantity of insulation than can be completely waterproofed in same day.

MEMBRANE APPLICATION

Roll out membrane, free from wrinkles or tears; place sheet membrane into place without stretching.

Shingle joints on sloped substrates in direction of drainage.

Overlap edges, ends, and seal seams by contact adhesive, minimum 3 inches (75 mm) wide, sealing permanently waterproof.

At membrane intersections with vertical surfaces, provide the following:

Extend membrane over and up cant strips at least 4 inches (102 mm) onto vertical surfaces.

Fully adhere flexible flashing over membrane and up to nailing strips.

Coordinate installation of roof related flashings, sumps, and drains; locate field splices away from low areas and roof drains, and shingle lap upslope sheets over downslope sheets.

Daily Seal: Provide daily seal in accordance with manufacturer's installation instructions at end of each work day to prevent infiltration of water at incomplete flashings, terminations, and other unfinished membrane edges.

CLEANING

See Section 017000 - Execution and Closeout Requirements for additional requirements.

Remove wrappings, empty containers, paper, and other debris from roof daily, and dispose of debris in compliance with local, State, and Federal regulations.

Remove bituminous markings from finished surfaces.

In areas where finished surfaces are soiled by work of this section, consult manufacturer of surfaces for cleaning advice and comply with their documented instructions.

Repair or replace defaced or damaged finishes caused by work of this section.

PROTECTION

Protect installed roofing and flashings from construction operations.

Where traffic must continue over finished roof membrane, protect surfaces using durable materials.

END OF SECTION

End of Document