Specifications_for_Pensacola_Amendment_0004-Addendum_02.pdf

REVISIONS TO BID DOCUMENTS TO REPLACE ROOFING - JULY 23, 2018

Pensacola NAS Commissary

JULY 23, 2018 – REVISIONS TO BID DOCUMENTS TO REPLACE ROOFING

MAY 2018 – Original Issue

REVISIONS TO BID DOCUMENTS – REPLACE ROOFING

DATE: July 23, 2018

RE: Pensacola NAS Commissary Pensacola, Florida

FROM: CROMWELL ARCHITECT ENGINEERS, INC.

1300 East 6th Street Little Rock, Arkansas 72202

TO: BIDDERS OF RECORD

This Revision forms a part of the Contract Documents and modifies the original Bidding Documents dated May 30, 2018, as noted below. Acknowledge receipt of this Revision in the space provided on the Bid Form. Failure to do so may subject Bidder to disqualification.

Each item in Contract Documents complements each of the other Contract Documents. No sheet, section, or document is to be followed without referring to all sheets, sections, and parts of the Contract Documents.

This Revision consists of the following Documents.

CHANGES TO PROCUREMENT AND CONTRACTING REQUIREMENTS:

1: Insert (this) Revision Narrative and attached Documents.

CHANGES TO SPECIFICATIONS:

2: "Replace Existing Roofing" - Remove existing roofing, cover board, roof insulation, roof flashing, parapet cap, copings, roof drains, drain covers, roof blocking, parapet blocking, and other existing roof system components. Replace with new modified bitumen roofing system as indicated in contract documents. Configuration of new roof to match existing unless indicated otherwise on contract documents. For the purpose of bidding, assume there are no ACM's (asbestos containing materials) in the roofing or other materials in the roof assembly to be removed. Government will provide an asbestos report prior to the start of construction verifying there are no ACM's present in the roofing system for contractor use.

3: Replace Section 07 52 00 – Modified Bituminous Membrane Roofing with revised Section issued with this Revision to Bid Documents.

CHANGES TO DRAWINGS:

4: Insert the attached revised and/or new Drawings issued with this Addendum dated with original issue date:

Issue Revision

Amendment 0004 Attachment 02, Addendum 02

Solicitation HDEC03-18-R-0007 Pensacola, FL

REVISIONS TO BID DOCUMENTS TO REPLACE ROOFING - JULY 23, 2018

MAY 2018 – Original Issue

Sheet Title/Description Date No.

ARCHITECTURAL

AD110 OVERALL DEMOLITION ROOF PLAN

A-110 OVERALL ROOF PLAN

A-505 ROOF DETAILS

A-506 ROOF DETAILS

PLUMBING

PD101 OVERALL PLUMBING DEMOLITION FLOOR PLAN

PD102 PLUMBING DEMOLITION FLOOR PLAN – AREA A

PD103 PLUMBING DEMOLITION FLOOR PLAN – AREA B

PD104 PLUMBING DEMOLITION FLOOR PLAN – AREA C

PD105 PLUMBING DEMOLITION FLOOR PLAN – AREA D

P-101 OVERALL PLUMBING FLOOR PLAN

P-102 PLUMBING FLOOR PLAN – AREA A

P-103 PLUMBING FLOOR PLAN – AREA B

P-104 PLUMBING FLOOR PLAN – AREA C

P-105 PLUMBING FLOOR PLAN – AREA D

END OF SECTION

Attachment 02, Addendum 02

REVISIONS TO BID DOCUMENTS TO REPLACE ROOFING – JULY 23, 2018

MAY 2018 – Original Issue

MODIFIED BITUMINOUS MEMBRANE ROOFING

07 52 00 - 1

SECTION 07 52 00

MODIFIED BITUMINOUS MEMBRANE ROOFING

PART 1 GENERAL

1.1 QUALITY CONTROL

A. The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

1. ASSE/SAFE A10.24 - Safety Requirements of Low-Sloped Roofs, current edition.

2. ASSE/SAFE Z87.1 - Standard for Occupational and Educational Eye and Face

Protection, current edition.

3. ARMA 410BUR88 - Manual of Roof Maintenance and Repair, current edition

4. ARMA 460LSR97 - NRCA/MRCA Repair Manual for Low Slope Membrane Roof Systems, current edition

5. ARMA PMBRG98 - Quality Control Guideline for the Application of Polymer Modified

Bitumen Roofing, current edition

6. ASTM C 1289 - Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal

Insulation Board, current edition

7. Standard Test Method for Tensile-Tear Strength of Bituminous Roofing Membranes, current edition

8. Asphalt Primer Used in Roofing, Damp proofing, and Waterproofing, current edition

9. ASTM D 4586 - Asphalt Roof Cement, Asbestos-Free, current edition

10. Fiberglass Reinforced Styrene-Butadiene-Styrene (SBS) Modified Bituminous Sheet with

Factory Applied Metal Surface, current edition

11. ASTM E 108 - Fire Tests of Roof Coverings, current edition

12. FM 4470 - Class I Roof Covers, current edition

13. FM P7825 - Approval Guide, current edition

14. FM P7825c - Approval Guide Building Materials, current edition

15. INTERNATIONAL CODE COUNCIL (ICC) ICC IBC International Building Cod, current edition

16. Miami-Dade (NOA) – Notice of Acceptance for Roofing System

16.17. MIDWEST ROOFING CONTRACTORS ASSOCIATION (MRCA)

17.18. CERTA NRCA/MRCA Certified Roofing Torch Applicator Program, current edition

18.19. NFPA 241 Standard for Safeguarding Construction, Alteration, and Demolition

Operations, current edition NATIONAL ROOFING CONTRACTORS ASSOCIATION

(NRCA)

19.20. NRCA Details NRCA Roof Perimeter Flashing Systems Construction Details for Class 1 Roof Construction, current edition

20.21. NRCA RWM Roofing and Waterproofing Manual, current edition

21.22. Architectural Sheet Metal Manual, Sixth Edition, Second Printing, current edition

22.23. 29 CFR 1910 Occupational Safety and Health Standards

23.24. 29 CFR 1910.12 Construction Work

24.25. 29 CFR 1926 Safety and Health Regulations for Construction

25.26. 29 CFR 1926.16 Rules of Construction UNDERWRITERS LABORATORIES

(UL)

26.27. UL 790 Rev thru Oct 2008) Test Methods for Fire Tests of Roof Coverings, current edition

27.28. UL RMSD Roofing Materials and Systems Directory, current edition

Amendment 0004 Attachment 02, Addendum 02

MAY 2018 – Original Issue

MODIFIED BITUMINOUS MEMBRANE ROOFING

07 52 00 - 2

1.2 DESCRIPTION OF ROOF MEMBRANE SYSTEM

A. Minimum two-ply SBS modified bitumen roof membrane consisting of modified bitumen interply base sheet and cap sheet. Modified bitumen roof membrane must be torch applied. or set in cold-applied adhesive.

A. Roofing system shall meet FM DS 1-28, FM DS 1-29, FM1-49, and wind uplift requirements, as well as local code requirements. Roofing system shall have Miami-Dade (NOA) Notice of Acceptance.

System shall also have corner and perimeter wind uplift enhancements as well as have a Factory Mutual Assembly Number.

B. All materials in roofing system, such as, but not limited to, modified bitumen membrane, flashings, PMMA roofing system, protection board, insulation, vapor retarder/temporary roof, adhesive, fasteners, perimeter metal, etc, shall be approved and supplied by roofing membrane manufacturer and included in specified warranty.

C. Provide New Roofing system as indicated, and provide Roof replacement with new roofing system as indicated. Removal of existing roofing system includes, but not limited to, removal of existing roof systems, insulation systems and flashing systems, and replacement with new thermal insulation system for positive drainage and new roofing and flashing system as specified herein. Provide for extension of existing curbs as required by roof manufacturer to meet warranty requirements.

D. Single manufacturer to provide modified bitumen membrane roofing system and PMMA Roofing system manufactured in the United States. Roofing manufacturer to provide a single source warranty to cover insulation, protection board, membrane, membrane flashings, PMMA system and metal flashing systems

B.E. All work must follow the NRCA RWM guidelines and standards stated within this Section.

1.3 SUBMITTALS

A. Shop Drawings: Roof plan; drawing depicting wind loads and boundaries of enhanced perimeter and corner attachments of roof system components, as applicable.

B. Product Data: Modified Bitumen Sheets; PMMA Roofing System, Cold-Applied Membrane

Adhesive Fiberglass Felt, Primer, Modified Bitumen Roof Cement; Pre-Manufactured Accessories

Fasteners and Plates.

C. Sample Warranty certificate.

D. Insulation and Protection Board:

D.E. Together with requirements of this Section, include in data written acceptance by the roof membrane manufacturer of the products and accessories provided. Products must be as listed in the applicable wind uplift and fire rating classification listings, unless approved otherwise by the

Contracting Officer.

Amendment 0004 Attachment 02, Addendum 02

MAY 2018 – Original Issue

MODIFIED BITUMINOUS MEMBRANE ROOFING

07 52 00 - 3

E.F. Design Data Wind Uplift Calculations, Proivde Engineering calculation, signed, sealed and dated by qualified Engineer validating the wind resistance per ASCE7, ASTM D4073, and local requirements for roofing system.

F.G. Provide evidence that products used within this specification are manufactured in the United States.

G.H. Qualification of Manufacturer

H.I. Certify that the manufacturer of the modified bitumen membrane meets requirements specified under paragraph entitled "Qualification of Manufacturer."

I.J. Qualification of Applicator

J.K. Certify that the applicator meets requirements specified under paragraph entitled "Qualification of Applicator." Wind Uplift Resistance; G classification, as applicable

L. Fire Resistance classification; Submit the roof system assembly wind uplift and fire rating classification listings.

M. Bill of Lading, Certificate of Analysis for Roofing Membrane N. Vapor retarder/ temporary roofing membrane O. Miami Dade (NOA) Notice of Acceptance Number K.P. Factory Mutual RoofNav Number F.Q. Manufacturer's Instructions Modified Bitumen Membrane

1. Application: Flashing

2. Torches application and Cold Adhesive Applied Modified Bitumen Membranes; Primer

Roof Cement Fasteners Cold Weather Installation; Include detailed application instructions and standard manufacturer drawings altered as required by these specifications. Explicitly identify in writing, differences between manufacturer's instructions and the specified requirements.

G.R. Closeout Submittals Warranty Information Card

1. Instructions To Government Personnel: Include copies of Material Safety Data Sheets for maintenance/repair materials.

2. Submit 20 year "No-Dollar-Limit" warranty for labor and materials.

1.4 QUALITY ASSURANCE

A. Qualification of Manufacturer

Amendment 0004 Attachment 02, Addendum 02

MAY 2018 – Original Issue

MODIFIED BITUMINOUS MEMBRANE ROOFING

07 52 00 - 4

1. Modified bitumen sheet roofing system manufacturer must have a minimum of 10 years experience in manufacturing modified bitumen roofing products

1.2. Manufacturer utilizes a quality management system that is ISO 9001 certified.

Documentation of ISO 9001 certification of foreign subsidiaries without domestic certification will not be accepted. Include Manufacturer's quality control/quality assurance program description for the primary roofing products supplied. The quality assurance program description shall include all methods of testing for physical and mechanical property values. Provide confirmation of manufacturer's certificate of analysis for reporting the tested values of the actual material being supplied for the project prior to ordering of materials.

B. Qualification of Applicator

1. Roofing system applicator must be approved, authorized, or licensed in writing by the modified bitumen sheet roofing system manufacturer and have a minimum of five years experience as an approved, authorized, or licensed applicator with that manufacturer and be approved at a level capable of providing the specified warranty. The applicator must supply the names, locations and client contact information of five projects of similar size and scope that the applicator has constructed using the manufacturer's roofing products submitted for this project within the previous three years.

C. Fire Resistance

1. Complete roof covering assembly must:

a. Be Class A rated in accordance with ASTM E 108, FM 4470, or UL 790; and

b. Be listed as part of Fire-Classified roof deck construction in UL RMSD, or Class I roof deck construction in FM P7825.

c. FM or UL approved components of the roof covering assembly must bear the appropriate FM or UL label.

D. Wind Uplift Resistance

1. Complete roof covering assembly, including protection board and insulation, must be rated and installed to test wind loads Class 1-90 in accordance with Miami-Dade NOA Requirements, Florida Code Requirements, ASCE 7-10, FM P7825 and ASTM D 4073 capable of withstanding an uplift pressure as indicated on Drawings. Non-rated systems must not be installed. Provide wind load calculations and submit engineering calculations with substantiating data to validate wind resistance. Base all Wind uplift calculations on an ultimate wind speed of 136 153 mph in accordance with ASCE 7-10, and applicable building code requirements. Roofing system shall meet Factory Mutual, local codes and all applicable codes. Provide Miami-Dad NOA number for roof system as well as Factory Mutual RoofNav number; included corner and perimeter enhancements.

E. Preroofing Conference: After approval of submittals and before performing roofing and insulation system installation work, hold a preroofing conference to review the following:

1. Drawings, including Roof Plan, specifications and submittals related to the roof work

2. Roof system components installation

3. Procedure for the roof manufacturer's technical representative's onsite inspection and acceptance of the roof structure, and roofing substrate, the name of the manufacturer's technical representatives, the frequency of the onsite visits, distribution of copies of the inspection reports from the manufacturer's technical representatives to roof manufacturer

Amendment 0004 Attachment 02, Addendum 02

MAY 2018 – Original Issue

MODIFIED BITUMINOUS MEMBRANE ROOFING

07 52 00 - 5

4. Contractor's plan for coordination of the work of the various trades involved in providing the roofing system and other components secured to the roofing

5. Quality control, (ARMA PMBRG98) plan for the roof system installation

6. Safety requirements

7. Coordinate preroofing conference scheduling with the Contracting Officer. The conference must be attended by the Contractor, the Contracting Officer's designated personnel, and personnel directly responsible for the installation of roofing and insulation, flashing and sheet metal work, mechanical and electrical work, other trades interfacing with the roof work, designated safety personnel trained to enforce and comply with ASSE/SAFE A10.24, Fire Marshall, and representative of the roofing materials manufacturer. Before beginning roofing work, provide a copy of meeting notes and action items to all attending parties. Note action items requiring resolution prior to start of roof work.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Delivery

1. Deliver materials in manufacturers' original unopened containers and rolls with labels intact and legible. Mark and remove wet or damaged materials from the site. Where materials are covered by a referenced specification, the container must bear the specification number, type, and class, as applicable. Deliver materials in sufficient quantity to allow work to proceed without interruption.

B. Storage

1. Protect materials against moisture absorption and contamination or other damage. Avoid crushing or crinkling of roll materials. Store roll materials on end on clean raised platforms or pallets one level high in dry locations with adequate ventilation, such as an enclosed building or closed trailer. Do not store roll materials in buildings under construction until concrete, mortar, and plaster work is finished and dry. Maintain roll materials at temperatures above 50 degrees F for 24 hours immediately before application. Do not store materials outdoors unless approved by the Contracting Officer. Completely cover felts stored outdoors, on and off roof, with waterproof canvas protective covering. Do not use polyethylene sheet as a covering. Tie covering securely to pallets to make completely weatherproof. Provide sufficient ventilation to prevent condensation. Do not store more materials on roof than can be installed the same day and remove unused materials at end of each days work. Distribute materials temporarily stored on roof to stay within live load limits of the roof construction.

2. Maintain a minimum distance of 35 foot for all stored flammable materials, including materials covered with shrink wraps, craft paper and/or tarps from all torch/welding applications.

3. Immediately remove wet, contaminated or otherwise damaged or unsuitable materials from the site. Damaged materials may be marked by the Contracting Officer.

C. Handling

1. Prevent damage to edges and ends of roll materials. Do not install damaged materials in the work. Select and operate material handling equipment to prevent damage to materials or applied roofing.

1.6 ENVIRONMENTAL REQUIREMENTS

Amendment 0004 Attachment 02, Addendum 02

MAY 2018 – Original Issue

MODIFIED BITUMINOUS MEMBRANE ROOFING

07 52 00 - 6

A. Do not install roofing system when air temperature is below 40 degrees F, during any form of precipitation, including fog, or when there is ice, frost, moisture, or any other visible dampness on the roof deck. Follow manufacturer's printed instructions for Cold Weather Installation.

1.7 TORCH APPLIED MODIFIED BITUMEN MEMBRANE SAFETY

A. Property Protection

1. Take all precautions necessary to prevent ignition of combustible materials during torch application of roofing. Immediately call the fire department if a fire commences. Review all fire safety procedures as outlined at the pre-roofing conference.

2. Install materials using the techniques recommended by CERTA NRCA/MRCA Certified Roofing Torch Applicator Program available from the National Roofing Contractors Association (NRCA) and the Midwest Roofing Contractors Association (MRCA} as endorsed by the Asphalt Roofing Manufacturers Association (ARMA) and the United Union of Roofers, Waterproofers and Allied Workers. Application procedures must comply with NFPA 241, OSHA 29 CFR 1910 and 29 CFR 1910.12, 29 CFR 1926.16, 29 CFR 1926 Subpart F., UL Fire Resistance Directory Volume No. 1, NRCA R&W Manual, ICC IBC, and applicable codes.

3. Do not store flammable liquids on the roof.

4. Provide a minimum of two 2.65 gallon containers of water and two fully charged minimum fire extinguishers of appropriate type for work underway as recommended by the roofing materials manufacturer in separate, easily accessible locations on the roof and within 10 foot of each torch work area at all times.

5. Maintain a minimum separation of 20 foot between LP-Gas Cylinders and kettle. Provide protective fire retardant blanket barrier or shield between any building structure to a minimum height of 8 foot and a clear surround distance of 4 foot if operations force placement of kettle within a distance of 20 foot. Do not obstruct or place Cylinder storage within 10 foot of exits, means of egress, gates, roadways, entrances.

6. Provide a minimum of two portable fully charged fire extinguishers of appropriate type as recommended by the roofing material manufacturer in easily accessible and identifiable locations. Also provide two multipurpose 2-A:20-B:C portable fire extinguisher on the roof being covered or repaired.

7. Do not use flammable liquids with a flash point below 100 degrees F (gasoline and similar products) for cleaning purposes.

8. Check all fire extinguishers prior to commencement of work, and upon completion of the day's work, to ensure fullness and operability.

9. Project supervisor must make daily inspections with the facility manager of all conditions and operations which could present hazards during torching applications and issue directives to address all such concerns and items of the work and existing conditions.

10. Identify and protect all combustible roof components, possible fire traps, and hidden hazards. Seal off voids or openings in the substrate with non-combustible materials prior to installing torch-applied materials in the area. Install protective fire retardant blankets and shields at building walls, eaves, parapets and equipments curbs constructed of combustible materials within 3 foot radius of the area of torch work prior to commencement of the work.

Amendment 0004 Attachment 02, Addendum 02

MAY 2018 – Original Issue

MODIFIED BITUMINOUS MEMBRANE ROOFING

07 52 00 - 7

11. When working around intakes and openings, temporarily disconnect and block to prevent flame of torch from being drawn into the opening. Provide non-combustible shielding or flame guard protection where gaps or voids occur in the construction in area of torch work.

B. Fire Watch

1. All personnel on the roof during torch application must be properly trained to use a fire extinguisher. Provide a fire watch for a minimum of two hours after completion of all torch work at the end of each work shift. Maintain the fire watch for additional time required to ensure no potential ignition conditions exist. Utilize heat sensing meters to scan for hot spots in the work. For torch applications, provide and utilize a minimum of one certified heat detection gun per torch for use during the fire watch to verify cool, safe and non-combustible conditions exist. Provide a minimum duration fire watch of two hours conducted by personnel properly trained to survey the underside of the roof deck (where possible) and the topside of possible smoldering elements.

2. Do not torch in areas of poor and/or no visibility (curbs, corners, eaves, expansions joints, flashing, other voids and small penetrations) which could allow a torch flame to ignite combustible material(s) hidden from view or within the underside of the roof deck or building interior. Use cold finish applications in these areas whenever possible and per manufacturer's printed instructions, NRCA 4002, MRCA R&NW manual for "cold adhered" materials.

3. Do not leave the rooftop unattended during breaks in work during a work shift. Walk and scan all areas of application checking for hot spots, fumes, or smoldering, especially at wall and curb areas, prior to departure at the end of each work shift. Ensure any and all suspect conditions are eliminated prior to leaving the site each work shift.

C. Open Flame Application (Torch) Equipment and Personnel Safety

1. Only NRCA/MRCA CERTA certified roofing applicators are allowed to operate any torching equipment. Verify that all such applicators maintain and are currently carrying a valid Certified Roofing Torch Applicator (CERTA) card.

2. All crew members must be trained in preventive measures for indirect and direct dangers and hazards associated with roofing work, which include, but are not limited to the following:

a. Heat Stress: Wear light colored clothing, a hat for ultra-violet protection, and other eye protective devices. Drink sufficient quantities of non-alcoholic, non-caffeine liquids. Stage shifts for crew members to allow for breaks from heat and sun exposure without interfering with work progress.

b. First Aid for Burns: Immediately call for an ambulance. Contact local Occupational Health Services (OHS).

3. All crew members must wear correct personal protective equipment (PPE), including, but not limited to the following items:

a. Long-sleeved shirts buttoned at the collar and cuffs,and must be made of non-flammable materials. Polyester materials are not allowed.

b. Work boots covering ankles with rubber or composite soles.

Amendment 0004 Attachment 02, Addendum 02

MAY 2018 – Original Issue

MODIFIED BITUMINOUS MEMBRANE ROOFING

07 52 00 - 8

c. Long pants without cuffs to extend over the top of the work boots, and must be made of non-flammable materials. No polyester allowed.

d. Heavy leather gloves and/or flame retardant gauntlets which must be worn during all handling of a torch, whether operating or not. \

e. OSHA and ASSE/SAFE Z87.1 approved face shields, goggles and/or safety glasses to be worn during torching and any other applicable roofing functions.

f. OSHA and ANSI approved hard hats.

D. Wind Conditions

1. Use side shields with all torching operations when winds are occurring to prevent flame distortion of end burners. Use torch machine equipment with bottom shield plate to prevent flame spread on to roof deck and substrate. When high wind gusts are present, notify the safety officer and cease all use of torching equipment until wind conditions lower and authorization from the safety officer to proceed is received.

1.8 SEQUENCING

A. Coordinate the work with other trades to ensure that components which are to be secured to or stripped into the roofing system are available and that permanent flashing and counter flashing, per NRCA Details, and are installed as the work progresses. Ensure temporary protection measures are in place to preclude moisture intrusion or damage to installed materials. Application of roofing must immediately follow application of insulation as a continuous operation. Coordinate roofing operations with insulation work so that all roof insulation applied each day is covered with roof membrane installation the same day.

1.9 WARRANTY

A. Warranties described in this paragraph are in addition to, and do not take the place of, warranties and remedies provided under the terms and conditions of the Contract for the project. Provide roof system material and workmanship warranties meeting specified requirements. Provide revision or amendment to standard membrane manufacturer warranty as required to comply with the specified requirements.

B. Roof Membrane Manufacturer Complete System Warranty

1. Furnish the roof membrane manufacturer's 20-year no dollar limit roof system materials and installation workmanship warranty, including PMMA membrane system, flashing, metal perimeter metal flashing, protection coverboard, adhesive, fasteners, and insulation in compliance with ASTM C 1289, and accessories necessary for a watertight roof system construction. Provide warranty directly to the Government and commence warranty effective date at time of Government's acceptance of the roof work. The warranty must state that:

a. If within the warranty period the roof system, as installed for its intended use in the normal climatic and environmental conditions of the facility, becomes non-watertight, shows evidence of moisture intrusion within the assembly, blisters, splits, tears, delaminates, separates at the seams, or shows evidence of excessive weathering due to defective materials or installation workmanship, the repair or replacement of the defective and damaged materials of the roof system assembly and correction of defective workmanship are the responsibility of the roof membrane manufacturer. All

Amendment 0004 Attachment 02, Addendum 02

MAY 2018 – Original Issue

MODIFIED BITUMINOUS MEMBRANE ROOFING

07 52 00 - 9 costs associated with the repair or replacement work are the responsibility of the roof membrane manufacturer.

b. When the manufacturer or his approved applicator fail to perform the repairs within 72 hours of notification, emergency temporary repairs performed by others does not void the warranty.

c. Damage to the roofing system caused by sustained winds having a velocity of 136 mph or less is covered by the warranty.

d. Upon completion of installation, and acceptance by the Contracting Officer, the manufacturer must supply the appropriate warranty to the Owner.

e. Installer must submit a minimum two year warranty to the membrane manufacturer from the date of acceptance, with a copy to the Contracting Officer.

C. Special Roofing System Warranty

1. The General Contractor must warrant for a period of not less than five (5) years that the roof system, as installed, is free from defects in installation workmanship, to include the roof membrane, flashing, insulation, accessories, attachments, and sheet metal installation integral to a complete watertight roof system assembly. Make warranty directly to the Government. Correction of defective workmanship and replacement of damaged or affected materials are the responsibility of the roof system installer. All costs associated with the repair or replacement work are the responsibility of the installer.

D. Continuance of Warranty

1. Repair or replacement work, ARMA 410BUR88, ARMA 460LSR97 that becomes necessary within the warranty period must be approved, as required, and accomplished in a manner so as to restore the integrity of the roof system assembly and validity of the roof membrane manufacturer warranty for the remainder of the manufacturer warranty period.

1.10 CONFORMANCE AND COMPATIBILITY

A. The entire roofing and flashing system must be in accordance with specified and indicated requirements, including fire and wind resistance (ANSI/SPRI ES-1) requirements. Work not specifically addressed and any deviation from specified requirements must be in general accordance with recommendations of the NRCA Roofing and Waterproofing Manual, membrane manufacturer published recommendations and details, and compatible with surrounding components and construction. Submit any deviation from specified or indicated requirements to the Contracting Officer for approval prior to installation.

PART 2 PRODUCTS

2.1 PRODUCTS

A. Basis of Design Products: To establish standards of manufacturer, operation, performance and appearance, drawings and specifications are based on products of the manufacturer (s) listed herein. Provided compliance with requirements, products of other manufacturers may also be acceptable.

B. Basis of Design: Paradiene 20 / Paradiene 30 CRFR with Veral Flashing and ParaPro PMMA Roofing and Flashing System, as manufactured by Siplast, Inc. www.siplast.com.

Amendment 0004 Attachment 02, Addendum 02

MAY 2018 – Original Issue

MODIFIED BITUMINOUS MEMBRANE ROOFING

07 52 00 - 10

2.2 MODIFIED BITUMEN SHEETS AND FIBERGLASS FELT MATERIALS

A. Furnish a combination of specified materials that comprise the modified bitumen manufacturer's standard system of the number and type of plies specified. Materials provided must be suitable for the service and climatic conditions of the installation. Modified bitumen sheets must be watertight and visually free of pinholes, particles of foreign matter, non-dispersed raw material, factory splices, or other conditions that might affect serviceability. Polymer modifier must comply with ARMA PMBRG98 and be uniformly dispersed throughout the sheet. Edges of sheet must be straight and flat. Interply and Cap sheets, when bonded together shall pass ASTM D5849 as manufactured and after heat conditioning according to ASTM D5147/D5147M. The roof system shall pass 500 cycles of ASTM D5849 Resistance to Cyclic Joint Displacement (fatigue) at 14 oF. Passing results shall show no signs of membrane cracking or Interply delamination after 500 cycles. The roof system shall pass 200 cycles of ASTM D5849 after heat conditioning performed in accordance with ASTM D5147/D5147M

1. SBS Base Interply Sheet: Manufacturer's premium grade smooth surface base ply sheet of a two ply system as required to comply with specified application and warranty requirements.

a. Siplast Paradiene 20 .

1) ASTM D6163 Type II, Grade S; styrene-butadiene-styrene (SBS) modified, glass fiber reinforced.

2) Thickness (avg): 138 mils (ASTM D5147/D5147M).

3) Thickness (min): 134 mils (ASTM D5147/D5147M).

4) Weight (min per 100 ft² of coverage): 94 lb.

5) Maximum filler content in elastomeric blend - 35% by weight.

6) High Temperature Stability (min): 250oF (ASTM D5147/D5147M ).

7) Low temperature flexibility @ -15 oF: PASS (ASTM D5147/D5147M ).

8) Peak Load (avg) @ 73 oF: 80 lbf/inch (ASTM D5147/D5147M).

9) Peak Load (avg) @ 0 oF: 150 lbf/inch (ASTM D5147/D5147M).

10) Ultimate Elongation (avg.) @ 73 oF: 100% (ASTM D5147/D5147M ).

11) Dimensional Stability (max): 0.1% (ASTM D5147/D5147M).

12) Compound Stability (min): 250 oF (ASTM D5147/D5147M).

13) UL Class listed, FM Approved (products shall bear seals of approval).

14) Reinforcement: fiberglass scrim/fiberglass mat or other meeting the performance and dimensional stability criteria.Confirmation that the membrane material is a homogenous SBS blend composition without the use of oxidized asphalt as a carrier saturant

15) Provide torch grade product when using torch application a.

2. SBS Cap Sheet: Manufacturer's premium grade Class A fire rated cap sheet with a minimum thickness of 145 mils and a highly reflective white synthetic surfacing which meets Energy Star reflective standards, to be used as a finish ply of a two ply system as required to comply with specified application and warranty requirements.

a. Siplast Paradiene 30 CRFR

1. ASTM D6163 Type I, Grade G (ceramic granules, specifically treated for cool roof application, manufacturer's standard white color);

styrene-butadiene-styrene (SBS) modified, glass fiber reinforced.

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2. Thickness (avg): 138 mils (ASTM D5147/D5147M).

3. Thickness at selvage (coating thickness) (avg): 118 mils (ASTM D 5147).

4. Thickness at selvage (coating thickness) (min): 114 mils (ASTM D 5147).

5. Weight (min per 100 ft² of coverage): 96 lb.

6. Peak filler content in elastomeric blend: 35% by weight.

7. Low temperature flexibility @ -15 oF: PASS (ASTM D5147/D5147M ).

8. Peak Load (avg) @ 73 oF: 30 lbf/inch (ASTM D5147/D5147M).

9. Peak Load (avg) @ 0 oF: 75 lbf/inch (ASTM D5147/D5147M).

10. Ultimate Elongation (avg.) @ 73 oF: 55% (ASTM D5147/D5147M).

11. Compound Stability (max): 0.1% (ASTM D5147/D5147M).

12. High Temperature Stability (min): 250 oF (ASTM D5147/D5147M ).

13. Maximum 1.5 grams of granular loss (average result) and 2.0 grams loss per individual sample when tested in accordance to ASTM D5147/D5147M.

14. UL Class listed, FM Approved (products shall bear seals of approval).

15. Reinforcement: fiberglass mat or other meeting the performance and

Compound stability criteria.

16. Confirmation that the membrane material is a homogenous SBS blend composition without the use of oxidized asphalt as a carrier saturant.

17. Solar Reflectance: · 0.70% (ASTM C1549).

18. Thermal Emittance: · 0.91% (ASTM C1371).

19. Surfacing: White ceramic granules specially treated for cool roof applications

20. Provide torch grade product when using torch application.

a.

2.3 BASE FLASHING MEMBRANE

A. Membrane manufacturer's standard, minimum two-ply modified bitumen membrane flashing system compatible with the roof membrane specified and as recommended in membrane manufacturer's published literature. Flashing membranes must meet or exceed the properties of the material standards specified for the modified bitumen base and cap sheet, except that flashing membrane thickness must be as recommended by the membrane manufacturer. Metal clad flashing membrane must comply with ASTM D 6298.

1. Siplast Veral.

a) Thickness (avg): 150 mils (ASTM D5147/D5147M).

b) Thickness (min): 146 mils (ASTM D5147/D5147M).

c) Weight (min per 100 ft² of coverage): 96 lb (4.6 kg/m²).

d) Coating Thickness – back surface (min): 40 mils ( ASTM D5147/D5147M).

e) Low temperature flexibility @ 0oF: PASS (ASTM D5147/D5147M.

f) Peak Load (avg) @ 73 oF: 85 lbf/inch (ASTM D5147/D5147M).

g) Peak Load (avg) @ 0 oF: 180 lbf/inch (ASTM D5147/D5147M).

h) Ultimate Elongation (avg) @ 73 oF: 45% (ASTM D5147/D5147M).

i) Tear-Strength (avg): 120 lbf (ASTM D5147/D5147M).

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j) Dimensional Stability (max): 0.2% (ASTM D5147/D5147M).

k) Compound Stability (min): 225 oF (ASTM D5147/D5147M).

l) Cyclic Thermal Shock Stability (maximum): 0.2% (ASTM D 7051).

m) UL Approved, FM Approved (products shall bear seals of approval).

n) Reinforcement: fiberglass scrim mat or other meeting the performance and dimensional stability criteria.

o) Surfacing: aluminum metal foil

2.4 Roofing Manufacturer’s Fluid Applied Catalyzed Resin Roofing System and Roofing Manufacturer’s

Fluid Applied Catalyzed Resin Flashing System for roof flashing of all penetrations, scuppers and roof drains. Fluid-applied reinforced membrane conforming to ASTM C 836 A flexible, PMMA-based resin with a color coating for use in combination with fleece fabric to form a monolithic, reinforced roofing membrane for field membrane construction. Color of PMMA membrane will be selected by AE for each specified area of application. The composite roof system, including SBS modified bitumen ply sheet and reinforced PMMA, shall pass 500 cycles of ASTM D 5849 Resistance to Cyclic Joint Displacement (fatigue) at 14oF. Passing results shall show no signs of membrane cracking or interply delamination after 500 cycles. The roof system shall pass 200 cycles of ASTM D 5849 after heat conditioning performed in accordance with ASTM D 5147

a. Siplast, Inc - ParaPro Roofing Membrane System and ParaPro 123 Flashing

1. Thickness (avg): 90 mils at 0.31 kg/ft² coverage rate (ASTM D 5147, section 5).

2. Weight (min per 100 ft² of coverage): 68.4 lb

3. Peak Load (avg) @ 73°F: 70 lbf/in (ASTM D 5147 section 6)

4. Peak Load (avg) @ 73°F): 90 lbf/inch (ASTM D 412, dumbbell)

5. Elongation at Peak Load (avg) @ 73°F: 35% (ASTM D 5147, section 6)

6. Elongation at Peak Load (avg) @ 73°F: 35% (ASTM D 412, dumbbell)

7. Shore A Hardness (avg): 81 (ASTM D 2240)

8. Water Absorption, Method I (24h @ 73°F): 0.8% (ASTM D 570)

9. Water Absorption, Method II (48h @ 122°F): 1.2% (ASTM D 570)

10. Low temperature flexibility @ 23 ºF: PASS (ASTM D 5147, section 11)

11. Dimensional Stability (max): 0.15% (ASTM D 5147, section 10)

12. Approvals: UL Class listed, FM Approved (products shall bear seals of approval)

2.5 TEMPORARY ROOFING/ VAPOR RETARDER MEMBRANE FOR REROOF AREA

A. Provide manufacturer’s recommended SBS-modified bituminous high performance base ply for use as a temporary membrane over mechanically attached protection board in which the will be incorporated into the new roofing system where indicated on drawings.

1. Membrane to have the same minimum properties as the interplay sheet. Siplast 20 torch applied or applied in Siplast SFT cold adhesive as required for application and directed by the roofing manufacturer

2.42.6 COLD-APPLIED MEMBRANE ADHESIVE

A. Membrane manufacturer's recommended low volatile organic compound (VOC) cold process adhesive for application of the membrane plies.

B. In area were Metal Clad Flashing and PMMA Roofing and Flashing system is provided provide a single component, solvent-free adhesive as approved by roofing manufacturer for application.

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A.1. Siplast SFT

2.7 MEMBRANE SURFACING

A. Provide modified bitumen roof membrane cap sheet with factory-applied white synthetic chip surfacing of bright white color compliant and qualifies for LEED Solar Reflective Index.

2.8 PRIMER

A. ASTM D 41, or other primer compatible with the application and as approved in writing by the modified bitumen membrane manufacturer.

2.9 MODIFIED BITUMEN ROOF CEMENT

A. ASTM D 4586, Type II for vertical surfaces, Type I for horizontal surfaces, compatible with the modified bitumen roof membrane and as recommended by the modified bitumen membrane manufacturer.

2.10 CANT AND TAPERED EDGE STRIPS

A. Provide non-combustible rigid mineral wool fiber cant manufactured from basalt rock and steel slag having a melting point of 2180 degrees F acceptable to roofing materials manufacturer, and tapered edge strips of the same material as the roof insulation. Cant strips must be minimum 4 inch vertical height with 45 degree cant angle. Taper edge strips at a rate of one to 1-1/2 inch per foot to a minimum of 1/8 inch of thickness. Provide kiln-dried preservative-treated wood cants, in compliance with requirements of Section 06 10 00 ROUGH CARPENTRY at base of wood nailers set on edge and wood curbing and where otherwise indicated.

2.11 FASTENERS AND PLATES

A. Provide coated, corrosion-resistant fasteners as recommended by the modified bitumen sheet manufacturer's printed instructions and meeting the requirements of FM 4470 and FM P7825c for Class I roof deck construction and the wind uplift resistance specified. For fastening of membrane or felts to wood materials, provide fasteners driven through 1 inch diameter metal discs, or one piece composite fasteners with heads not less than 1 inch in diameter or 1 inch square with rounded or 45 degree tapered corners.

B. Masonry or Concrete Walls and Vertical Surfaces

1. Use hardened steel nails or screws with flat heads, diamond shaped points, and mechanically deformed shanks not less than 1 inch long for securing felts, modified bitumen sheets, metal items, and accessories to masonry or concrete walls and vertical surfaces. Use power-driven fasteners only when approved in writing by the Contracting Officer.

C. Metal Plates

1. Provide flat corrosion-resistant round stress plates as recommended by the modified bitumen sheet manufacturer's printed instructions and meeting the requirements of FM 4470; not less than 2 inch in diameter. Form discs to prevent dishing or cupping.

2.12 PRE-MANUFACTURED ACCESSORIES

A. Pre-manufactured accessories must be manufacturer's standard for intended purpose, comply

Amendment 0004 Attachment 02, Addendum 02

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07 52 00 - 14 with applicable specification section, compatible with the membrane roof system and approved for use by the modified bitumen membrane manufacturer.

B. Pre-fabricated Curbs

1. Provide 24 gauge G90 galvanized curbs with minimum 4 inch flange for attachment to roof nailers. Curbs must be minimum height of 10 inch above the finished roof membrane surface.

2.13 WALKPADS

A. Roof walkpads must be polyester reinforced, granule-surfaced modified bitumen membrane material, minimum 217 mils) thick, compatible with the modified bitumen sheet roofing and as recommended by the modified bitumen sheet roofing manufacturer. Panels must not exceed 4 foot in length. Other walkpad materials require approval of the Contracting Officer prior to installation.

2.14 ROOF INSULATION BELOW MODIFIED BITUMEN MEMBRANE SYSTEM

A. Insulation must be compatible with the roof membrane, approved by the membrane manufacturer and meeting all the requirements as specified in Section 07 22 00 ROOF AND DECK INSULATION Provide preformed roof insulation boards that comply with requirements and referenced standards, selected from manufacturer's standard sizes and of thicknesses indicated. Board size shall be as recommended by roofing manufacturer for application

B. Polyisocyanurate Board Insulation:

a. Where indicated on drawings, provide insulation as manufactured by the roofing manufacturer, standard panels composed of a rigid, cellular polyisocyanurate thermal insulation with core formed by using HCFCs as blowing agents complying with ASTM C 1289.

b. ASTM C 1289, Type II, Class 2, Grade 3, Faced with coated polymer-bonded glass fiber mat facer on major surfaces of core foam. Minimum compressive strength shall be 25 psi.

c. The insulation shall provide a minimum R-value of 30 (LTTR value). Provide multiple layers with the maximum single board thickness not to exceed 2 inches.

d. Manufacturer: As provided by the roofing membrane manufacturer.

e. Tapered Insulation: Provide preformed saddles, crickets, tapered edge strips, and other insulation shapes where indicated for sloping to drain. Provide factory-tapered insulation boards fabricated to slope twice that of the main roof slope, unless otherwise indicated..

2.15 PROTECTION BOARD

A. Fiberglass-Mat Faced Gypsum Roof Board: Georgia-Pacific Gypsum LLC; Dens Deck Roof Board (for use as cover board over insulation). As approved by the roofing membrane manufacturer.

Minimum Qualities:

a. Thickness: 1/2 inch thick, minimum, unless otherwise noted

b. Mold Resistance of 10 per ASTM D3273

c. ASTM Standard C1177

d. Fire Classification of FM Class 1 as a protection board.

Attachment 02, Addendum 02

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2.16 INSULATION AND PROTECTION BOARD ACCESSORIES

A. General:

1. Furnish roof insulation accessories recommended by insulation manufacturer for intended use and compatible with membrane roofing.

B. Fasteners:

1. Approved hardened fasteners or screws to penetrate deck, conforming to FM 4470, and FM APP GUIDE for Class I roof deck construction. Factory-coated steel fasteners and metal plates meeting corrosion-resistance provisions in FMG 4470, designed for fastening roof insulation to substrate for required pullout strength, and acceptable to roofing system manufacturer. Length as required for thickness material and penetration of the deck substrate. Quantity, length and placement of fasteners to withstand uplift pressures including corner and perimeter.

C. Insulation and Protection Board Adhesive:

1. Two-component, low-rise polyurethane foam adhesive designed to adhere rigid board insulation and glass mat gypsum protection board to specified substrates. Adhesive shall have a UL rating and approved by Factory Mutual as a component for use in the Class 1 assembly. Adhesive and application shall meet the wind uplift requirements designed for the roofing system. Adhesive shall be approved by the roofing membrane manufacturer for its application and use in the roofing assembly.

a. Cold Adhesive formulated to attach roof insulation layer to roofing membrane and insulation layer and protection board to insulation layer shall be approved in writing by membrane roofing system manufacturer for application.

1.22.17 THERMAL BARRIER

A. Thermal barrier for use over combustible substrates such as wood blocking shall be glass mat gypsum roof board minimum, 1/2-inch thickness, complying with requirements of Section 07 22 00 ROOF AND DECK INSULATION07 52 00-2.1.3, Protection Board.

PART 3 EXECUTION

3.1 EXAMINATION

A. Ensure that the following conditions exist prior to application of the roofing materials:

1. Drains, curbs, cants, control joints, expansion joints, perimeter walls, roof penetrating components, and equipment supports are in place.

2. Surfaces are rigid, clean, dry, smooth, and free from cracks, holes, and sharp changes in elevation. Joints in the substrate are sealed to prevent dripping of bitumen into building or down exterior walls.

3. The plane of the substrate does not vary more than 1/4 inch within an area 10 by 10 foot when checked with a 10 foot straight edge placed anywhere on the substrate.

4. Substrate is sloped as indicated to provide positive drainage.

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5. Walls and vertical surfaces are constructed to receive counter flashing, and will permit mechanical fastening of the base flashing materials.

6. Treated wood nailers are in place on non-nailable surfaces, to permit nailing of base flashing at minimum height of 8 inch above finished roofing surface.

7. Protect all combustible materials and surfaces which may contain concealed combustible or flammable materials. All fire extinguishing equipment has been placed as specified.

8. Verify all Fire Watch personnel assignments.

9. Treated wood nailers are fastened in place at eaves, gable ends, openings, and intersections with vertical surfaces for securing of membrane, edging strips, attachment flanges of sheet metal, and roof fixtures. Embedded nailers are flush with deck surfaces. Surface-applied nailers are the same thickness as the roof insulation. Attachment or wood nailers to meet Wind Uplift requirements and all applicable codes.

10. Cants are securely fastened in place in the angles formed by walls and other vertical surfaces. The angle of the cant is 45 degrees and the height of the vertical leg is not less than 3-1/2 inch.

11. Exposed nail heads in wood substrates are properly set. Warped and split boards have been replaced. There are no cracks or end joints 1/4 inch in width or greater. Knot holes are covered with sheet metal and nailed in place.

12. Insulation boards are installed smoothly and evenly, and are not broken, cracked, or curled. There are no gaps in insulation board joints exceeding 1/4 inch in width. Insulation is being roofed over on the same day the insulation is installed.

13. Roof deck and framing are sloped as indicated to provide positive drainage.

14. Verify substrate is clean and smooth, flat, free of depressions, waves, or projections, and suitable for installation of roof system. Sweep or vacuum all surfaces, removing all loose aggregate and foreign substances prior to commencement of roofing. Conduct a base ply fastener pull test to ensure a minimum withdrawal resistance of 40 pounds force per fastener. Provide number of pull test required by roofing manufacturer to ensure roof application will meet required wind uplift pressures and warranty requirements. Provide written documentation of test results.

15. Provide fastener pull test to verify deck fastener meets required uplift pressures. Pull test shall conform to ANSI/SPRI FX-1 Test procedure for determining the withdrawal resistance of roofing fasteners. Provide test and results prior to ordering fastener material.

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

14.17. Roofing membrane manufacturer's Technical Representative to exam and approve substrate prior to installation of roofing membrane and insulation systems

B. Install protective coverings at paving and building walls adjacent to hoists, tankers, and kettles prior

Attachment 02, Addendum 02

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07 52 00 - 17 to starting the work. Lap protective coverings not less than 6 inch, secure against wind, and vent to prevent collection of moisture on covered surfaces. Keep protective coverings in place for the duration of the roofing work.

3.2 EQUIPMENT

A. Mechanical Application Devices

1. Mount mechanical application devices on pneumatic-tired wheels. Use devices designed and maintained to operate without damaging the insulation, roofing membrane, or structural components.

1. Flame-Heated Equipment

2. Do not place flame-heated equipment on roof. Provide and maintain a fire extinguisher adjacent to flame-heated equipment and on the roof.

a. Open Flame Application Equipment

3. Torches and other open flame equipment must be specifically…