Exhibit F UFGS 07 53 23.pdf

USACE / NAVFAC / AFCEC / NASA UFGS- 07 53 23 ( May 2012) Change 2 - 08/ 18 Pr epar i ng Act i v i t y: NAVFAC Super sedi ng UFGS- 07 53 23 ( November 2008)

UNI FI ED FACI LI TI ES GUI DE SPECI FI CATI ONS

Ref er ences ar e i n agr eement wi t h UMRL dat ed Januar y 2021

SECTION TABLE OF CONTENTS

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

SECTION 07 53 23

ETHYLENE-PROPYLENE-DIENE-MONOMER ROOFING

05/ 12, CHG 2: 08/ 18

PART 1 GENERAL

1.1 REFERENCES

1.2 DESCRIPTION OF ROOF MEMBRANE SYSTEM[S]

1.3 SUBMITTALS

1.3.1 Shop Drawings

1.4 QUALITY ASSURANCE

1.4.1 Qualification of Manufacturer

1.4.2 Qualification of Applicator

1.4.3 Qualifications of Photovoltaics (PV) Rooftop Applicator

1.4.4 Fire Resistance

1.4.5 Wind Uplift Resistance

1.4.6 Preroofing Conference

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 Delivery

1.5.2 Storage

1.5.3 Handling

1.6 ENVIRONMENTAL REQUIREMENTS

1.7 SEQUENCING

1.8 WARRANTY

1.8.1 Roof Membrane Manufacturer Warranty

1.8.2 Roofing System Installer Warranty

1.8.3 Continuance of Warranty

1.9 CONFORMANCE AND COMPATIBILITY

1.10 ELIMINATION, PREVENTION OF FALL HAZARDS

1.10.1 Fall Protection

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 EPDM Sheet

2.1.2 Energy [and Cool Roof] Performance

2.1.3 Seam Tape

2.1.4 Lap Splice Adhesive

2.1.5 Bonding Adhesive

SECTION 07 53 23 Page 1

2.1.6 Lap Cleaner, Lap Sealant, and Edge Treatment

2.1.7 Water Cutoff Mastic/Water Block

2.1.8 Membrane Flashings and Flashing Accessories

2.1.8.1 Flashing Tape

2.1.9 Membrane Fasteners and Plates

2.1.9.1 Stress Plates for Fasteners

2.1.9.2 Auxiliary Fasteners

2.1.9.3 Powder-Driven Fasteners

2.1.9.4 Metal Disks

2.1.10 Ballast

2.1.10.1 Stone Ballast

2.1.10.2 Ballast Pavers

2.1.11 Protection Mat / Slip Sheet

2.1.12 Pre-Manufactured Accessories

2.1.12.1 Pre-fabricated Curbs

2.1.13 [Rubber Walkboards] [and] [Precast Concrete Paver Block

Walkways]

2.1.13.1 Rubber Walkboards

2.1.13.2 Precast Concrete Paver Block

2.1.14 Roof Insulation Below EPDM Sheet

2.1.15 Top Coating

2.1.16 Photovoltaic (PV) Systems - Rack Mounted Systems

2.1.17 Wood Products

2.1.18 Membrane Liner

2.2 FLASHING CEMENT

PART 3 EXECUTION

3.1 EXAMINATION

3.2 APPLICATION

3.2.1 Special Precautions

3.2.2 EPDM Sheet Roofing

3.2.3 Application Method

3.2.3.1 Combined Fully Adhered and Mechanically Fastened

Application

3.2.3.2 Fully Adhered Membrane Application

3.2.3.3 Mechanically Fastened Membrane Application

3.2.3.4 Ballasted Membrane Application

3.2.4 Tape Seams / Lap Splices

3.2.5 Adhesive Seams / Lap Splices

3.2.6 Perimeter Attachment

3.2.7 Securement at Base Tie-In Conditions

3.3 FLASHINGS

3.3.1 General

3.3.2 Membrane Flashing

3.3.3 Flashing at Roof Drain

3.3.4 PRE-FABRICATED CURBS

3.3.5 Set-On Accessories

3.3.6 Lightning Protection

3.4 ROOF WALKPADS

3.4.1 Elevated Metal [Walkways] [and] [Platforms]

3.4.2 Isolated Paver Blocks

3.4.3 [Stone][Paver] Ballast [Paver System]

3.5 CORRECTION OF DEFICIENCIES

3.6 CLEAN UP

3.7 PROTECTION OF APPLIED ROOFING

3.7.1 Water Cutoffs

3.7.2 Temporary Flashing for Permanent Roofing

3.7.3 Temporary Walkways, Runways, and Platforms

SECTION 07 53 23 Page 2

3.8 FIELD QUALITY CONTROL

3.8.1 Construction Monitoring

3.8.2 Manufacturer's Inspection

3.8.3 Roof Drain Test

3.9 INSTRUCTIONS TO GOVERNMENT PERSONNEL

3.10 INFORMATION CARD

-- End of Section Table of Contents --

SECTION 07 53 23 Page 3

USACE / NAVFAC / AFCEC / NASA UFGS- 07 53 23 ( May 2012) Change 2 - 08/ 18 Pr epar i ng Act i v i t y: NAVFAC Super sedi ng UFGS- 07 53 23 ( November 2008)

UNI FI ED FACI LI TI ES GUI DE SPECI FI CATI ONS

Ref er ences ar e i n agr eement wi t h UMRL dat ed Januar y 2021

SECTION 07 53 23

ETHYLENE-PROPYLENE-DIENE-MONOMER ROOFING

05/ 12, CHG 2: 08/ 18

NOTE: Thi s gui de speci f i cat i on cover s t he r equi r ement s f or et hyl ene pr opyl ene di ene t er pol ymer ( EPDM) el ast omer i c sheet r oof i ng, wi t h associ at ed el ast omer i c sheet f l ashi ng, f or i nst al l at i ons wi t h t he i nsul at i on bel ow t he membr ane on bot h exi st i ng and new r oof syst ems wi t h s l opes f r om 6 mm t o 76 mm 1/ 4 i nch t o 3 i nches per f oot .

Adher e t o UFC 1-300-02 Uni f i ed Faci l i t i es Gui de Speci f i cat i ons ( UFGS) For mat St andar d when edi t i ng t hi s gui de speci f i cat i on or pr epar i ng new pr oj ect speci f i cat i on sect i ons. Edi t t hi s gui de speci f i cat i on f or pr oj ect speci f i c r equi r ement s by addi ng, del et i ng, or r evi s i ng t ext . For br acket ed i t ems, choose appl i cabl e i t em( s) or i nser t appr opr i at e i nf or mat i on.

Remove i nf or mat i on and r equi r ement s not r equi r ed i n r espect i ve pr oj ect , whet her or not br acket s ar e present.

Comment s, suggest i ons and r ecommended changes f or t hi s gui de speci f i cat i on ar e wel come and shoul d be submi t t ed as a Criteria Change Request (CCR) .

NOTE: St andar d appl i cat i on met hods i ncl ude l oose- l ai d bal l ast ed, f ul l y adher ed, and mechani cal l y f ast ened syst ems. Al so i ncl uded i s a speci al combi ned f ul l y adher ed and mechani cal l y f ast ened syst em f or excessi ve wi nd l oadi ng condi t i ons. Thi s gui de speci f i cat i on does not i ncl ude t he st r uct ur al r oof deck, i nsul at i on, sheet met al f asci as, gr avel st ops, f l ashi ngs, nor use of el ast omer i c sheet s f or r oof i ng l ocat ed adj acent t o k i t chen or f ood ser vi ce exhaust syst em di schar ge duct s. Gr ease and oi l at t ack EPDM. Exhaust f umes must be di r ect ed away f r om t he r oof i ng syst em.

SECTION 07 53 23 Page 4

Coor di nat e t hi s sect i on wi t h ot her r oof syst em component s speci f i cat i ons such as r ough car pent r y, i nsul at i on and sheet met al f l ashi ng. Al so coor di nat e t hi s sect i on wi t h t he cr i t er i a cont ai ned i n UFC 3- 110- 03, " Roof i ng" as i t r el at es t o t he speci f i c pr oj ect and Ser vi ce Except i ons i ndi cat ed therein.

Speci f y membr ane at t achment s t hat ar e compat i bl e wi t h t he i nsul at i on speci f i ed. Do not adher e membr ane di r ect l y t o pol yst yr ene, per l i t e or st andar d wood f i ber , i nsul at i on. Ensur e f acer on pol y i socyanur at e i nsul at i ons i s compat i bl e wi t h t he adhesi ve of a f ul l y adher ed membr ane appl i cat i on.

Gl ass mat , moi st ur e r esi st ant gypsum r oof boar d can be used as an under l ayment over i nsul at i on f or adhesi ve appl i cat i on of r oof membr ane wi t h appr oval of t he membr ane manuf act ur er . Ut i l i ze wood f i ber boar d, per l i t e, or gl ass mat , moi st ur e r esi st ant gypsum r oof boar d as t op i nsul at i on l ayer under bal l ast ed r oof i ng syst ems.

PART 1 GENERAL

1.1 REFERENCES

NOTE: Thi s par agr aph i s used t o l i s t t he publ i cat i ons c i t ed i n t he t ext of t he gui de speci f i cat i on. The publ i cat i ons ar e r ef er r ed t o i n t he t ext by basi c desi gnat i on onl y and l i s t ed i n t hi s par agr aph by or gani zat i on, desi gnat i on, dat e, and t i t l e.

Use t he Ref er ence Wi zar d' s Check Ref er ence f eat ur e when you add a Ref er ence I dent i f i er ( RI D) out si de of t he Sect i on' s Ref er ence Ar t i c l e t o aut omat i cal l y pl ace t he r ef er ence i n t he Ref er ence Ar t i c l e. Al so use t he Ref er ence Wi zar d' s Check Ref er ence f eat ur e t o updat e t he i ssue dat es.

Ref er ences not used i n t he t ext wi l l aut omat i cal l y be del et ed f r om t hi s sect i on of t he pr oj ect speci f i cat i on when you choose t o r econci l e r ef er ences i n t he publ i sh pr i nt pr ocess.

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.

AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE)

ASCE 7-16 (2017; Errata 2018; Supp 1 2018) Minimum Design Loads and Associated Criteria for Buildings and Other Structures

SECTION 07 53 23 Page 5

ASTM INTERNATIONAL (ASTM)

ASTM D448 (2012; R 2017) Standard Classification for Sizes of Aggregate for Road and Bridge Construction

ASTM D4637/D4637M (2015) EPDM Sheet Used in Single-Ply Roof Membrane

ASTM D4811/D4811M (2016) Standard Specification for Nonvulcanized (Uncured) Rubber Sheet Used as Roof Flashing

ASTM D6369 (1999; R 2006) Design of Standard Flashing Details for EPDM Roof Membranes

ASTM E108 (2020a) Standard Test Methods for Fire Tests of Roof Coverings

FM GLOBAL (FM)

FM 4470 (2016) Single-Ply, Polymer-Modified Bitumen Sheet, Built-up Roof (BUR), and Liquid Applied Roof Assemblies for Use in Class 1 and Noncombustible Roof Deck Construction

FM APP GUIDE (updated on-line) Approval Guide http://www.approvalguide.com/

NATIONAL ROOFING CONTRACTORS ASSOCIATION (NRCA)

NRCA RoofMan (2020) The NRCA Roofing Manual

SINGLE PLY ROOFING INDUSTRY (SPRI)

ANSI/SPRI RD-1 (2014) Performance Standard for Retrofit Drains

U.S. DEPARTMENT OF ENERGY (DOE)

Energy Star (1992; R 2006) Energy Star Energy Efficiency Labeling System (FEMP)

UNDERWRITERS LABORATORIES (UL)

UL 790 (2004; Reprint Jul 2014) Standard Test Methods for Fire Tests of Roof Coverings

UL RMSD (2012) Roofing Materials and Systems Directory

1.2 DESCRIPTION OF ROOF MEMBRANE SYSTEM[S]

NOTE: Coor di nat e wi t h Par t 2 mat er i al s specification.

Sel ect t he appl i cat i on met hod r equi r ed. Del et e

SECTION 07 53 23 Page 6 ot her opt i ons.

Wher e EPDM syst ems ar e ut i l i zed, f ul l y adher ed syst ems appl i ed over mi ni mum t wo l ayer s of r i gi d boar d r oof i nsul at i on i s t he pr ef er r ed nor m.

Do not speci f y st one bal l ast ed syst ems al ong f l i ght l i nes, i n wi nd zones exceedi ng 160 km/ h 100 mph, within 8 km 5 mi l es of coast l i ne, wi t hi n 457 m 1500 feet of open body of wat er , and on or adj acent t o cr i t i cal f aci l i t i es such as hospi t al s. Wher e bal l ast ed syst ems ar e r equi r ed, ut i l i ze i nt er l ocki ng paver s desi gned t o r esi st t he r equi r ed wi nd l oads.

Bal l ast ed syst ems on ai r per meabl e decks ( e. g. , met al decks, pr ecast concr et e panel s or pl anks) must i ncor por at e an ai r bar r i er i n t he assembl y.

Al so i ncor por at e an ai r bar r i er i n t he r oof assembl y f or mechani cal l y f ast ened syst ems. Use r ei nf or ced membr ane i n wi nd zones exceedi ng 160 km/ h 100 mph, within 8 km 5 mi l es of coast l i ne or wi t hi n 457 m 1500 f eet of open body of wat er .

Speci f y combi nat i on at t achment onl y f or i sol at ed geogr aphi c l ocat i ons t hat exper i ence ext r eme and ext ended wi nd condi t i ons such as por t i ons of Al aska and I cel and, or as ot her wi se r equi r ed by t he Government.

Wher e one membr ane syst em i s r equi r ed f or al l r oof ar eas, use t he f i r st par agr aph. Wher e di f f er ent syst ems ar e r equi r ed, use t he second par agr aph successi vel y and r epl ace t he open br acket s wi t h a descr i pt i on of t he subst r at e( s) or ar ea of t he bui l di ng or pr oj ect wher e each syst em i s t o be applied.

[Fully adhered][Mechanically fastened][Ballasted][Combination fully adhered and mechanically fastened] EPDM roof membrane system applied over [insulation][recovery board][concrete roof deck] substrate.

[_____]: [Fully adhered][Mechanically fastened][Ballasted][Combination fully adhered and mechanically fastened] EPDM roof membrane system applied over [insulation][recovery board][concrete roof deck] substrate.

1.3 SUBMITTALS

NOTE: Revi ew Submi t t al Descr i pt i on ( SD) def i ni t i ons i n Sect i on 01 33 00 SUBMI TTAL PROCEDURES and edi t t he f ol l owi ng l i s t , and cor r espondi ng submi t t al i t ems i n t he t ext , t o r ef l ect onl y t he submi t t al s r equi r ed f or t he pr oj ect . The Gui de Speci f i cat i on t echni cal edi t or s have cl assi f i ed t hose i t ems t hat r equi r e Gover nment appr oval , due t o t hei r compl exi t y or cr i t i cal i t y, wi t h a " G. " Gener al l y, ot her submi t t al i t ems can be r evi ewed by t he Cont r act or ' s Qual i t y Cont r ol Syst em. Onl y add a " G" t o an i t em

SECTION 07 53 23 Page 7 i f t he submi t t al i s suf f i c i ent l y i mpor t ant or compl ex i n cont ext of t he pr oj ect .

For Ar my pr oj ect s, f i l l i n t he empt y br acket s f ol l owi ng t he " G" c l assi f i cat i on, wi t h a code of up t o t hr ee char act er s t o i ndi cat e t he appr ovi ng aut hor i t y. Codes f or Ar my pr oj ect s usi ng t he Resi dent Management Syst em ( RMS) ar e: " AE" f or Ar chi t ect - Engi neer ; " DO" f or Di st r i ct Of f i ce ( Engi neer i ng Di v i s i on or ot her or gani zat i on i n t he Di st r i ct Of f i ce) ; " AO" f or Ar ea Of f i ce; " RO" f or Resi dent Of f i ce; and " PO" f or Pr oj ect Of f i ce. Codes f ol l owi ng t he " G" t ypi cal l y ar e not used f or Navy, Ai r For ce, and NASA pr oj ect s.

The " S" c l assi f i cat i on i ndi cat es submi t t al s r equi r ed as pr oof of compl i ance f or sust ai nabi l i t y Gui di ng Pr i nci pl es Val i dat i on or Thi r d Par t y Cer t i f i cat i on and as descr i bed i n Sect i on 01 33 00 SUBMI TTAL

PROCEDURES.

Choose t he f i r st br acket ed i t em f or Navy, Ai r For ce, and NASA pr oj ect s, or choose t he second br acket ed i t em f or Ar my pr oj ect s.

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are [for Contractor Quality Control approval.][for information only. When used, a code following the "G" classification identifies the office that will review the submittal for the Government.] Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Roof Plan Drawing

Wind Load Calculations

Boundaries of Enhanced Perimeter

Corner Attachments of Roof System Components

Location of Perimeter Half-Sheets

Spacing of Perimeter, Corner, and Infield Fasteners

Slopes and Drain Locations

SD-03 Product Data

Cement

EPDM Sheet ; G[, [_____]]

[ Heat Island Reduction ; S

][ Energy Star Label for Top Coating ; S

SECTION 07 53 23 Page 8

] Seam Tape

Bonding Adhesive

Lap Splice Adhesive

Water Cutoff Mastic/Water Block

Lap Cleaner, Lap Sealant, and Edge Treatment

Flashings

Flashing Accessories

Flashing Tape

Fasteners and Plates

[ Ballast

] Roof Insulation

[ Protection Mat

][ Pre-Manufactured Accessories

] Sample Warranty Certificate; G[, [_____]]

Submit all data required together with requirements of this section. Include a written acceptance by the roof membrane manufacturer of the insulation and other products and accessories to be provided. List products in the applicable wind uplift and fire rating classification listings, unless approved otherwise by the Contracting Officer.

SD-05 Design Data

NOTE: I ncor por at e t hi s par agr aph f or bal l ast ed syst ems and anyt i me non- FM r at ed syst ems ar e per mi ssi bl e. Coor di nat e wi t h r equi r ement s of " Wi nd Upl i f t " par agr aph.

Wind Uplift Calculations ; G[, [_____]]

[ Engineering calculations validating the wind resistance of roof system.

] SD-07 Certificates

Qualification of Manufacturer

Certify that the manufacturer of the roof membrane meets requirements specified under paragraph entitled "Qualification of Manufacturer."

Qualification of Applicator

SECTION 07 53 23 Page 9

Certify that the applicator meets requirements specified under paragraph entitled "Qualification of Applicator."

Wind Uplift Resistance classification, as applicable; G[, [_____]]

Fire Resistance classification; G[, [_____]]

Submit the roof system assembly [wind uplift and] fire rating classification listings.

SD-08 Manufacturer's Instructions

NOTE: Edi t t he manuf act ur er s i nst r uct i ons submi ssi on r equi r ement s as necessar y f or t he syst em speci f i ed. I ncl ude br acket ed r equi r ement s onl y as appl i cabl e t o t he syst em bei ng speci f i ed.

Application ; G[, [_____]]

Application Method ; G[, [_____]] , including pattern and frequency of mechanical attachments required in the field of roof, corners, and perimeters to provide for the specified wind resistance

Membrane Flashing ; G[, [_____]]

Seam Tape

Tape Seams / Lap Splices

Adhesive Seams / Lap Splices

Perimeter Attachment

Primer

Fasteners

[ Pavers

][ Protection Mat

][ Pre-Manufactured Accessories

] Cold Weather Installation; G[, [_____]]

Include detailed application instructions and standard manufacturer drawings altered as required by these specifications.

Explicitly identify in writing, differences between manufacturer's printed instructions and the specified requirements.

SD-11 Closeout Submittals

Warranty

Information Card

Instructions To Government Personnel

SECTION 07 53 23 Page 10

Include copies of Safety Data Sheets (SDS) for maintenance/repair materials.

1.3.1 Shop Drawings

Roof plan drawing depicting wind load calculations and boundaries of enhanced perimeter and corner attachments of roof system components , [ location of perimeter half-sheets ][, spacing of perimeter, corner, and infield fasteners ,] as applicable. Include the project roof plan of each roof level and conditions indicated. Provide all slopes and drain locations .

1.4 QUALITY ASSURANCE

NOTE: Al l pr oj ect s wi t h mor e t han 15, 000 squar e f eet 1400 squar e met er s of r oof ar ea or t hat i s def i ned as cr i t i cal use or mi ssi on cr i t i cal i n t he pr oj ect DD For m 1391 must have a Regi st er ed Roof Consul t ant ( RRC) or a r egi st er ed pr of essi onal engi neer ( PE) or r egi st er ed ar chi t ect ( RA) t hat der i ves hi s or her pr i nci pal i ncome f r om r oof i ng desi gn on t he qual i t y cont r ol st af f of t he desi gn t eam.

1.4.1 Qualification of Manufacturer

NOTE: Speci f y 5 year s manuf act ur er exper i ence unl ess di r ect ed ot her wi se by t he Gover nment

EPDM sheet roofing membrane manufacturer must have at least [5][_____] years experience in manufacturing EPDM roofing products.

1.4.2 Qualification of Applicator

NOTE: Speci f y 3 year s as an appr oved Cont r act or unl ess di r ect ed ot her wi se by t he Gover nment

Roofing system applicator must be approved, authorized, or licensed in writing by the roof membrane manufacturer and must have a minimum of [three][_____] 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 5 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.

1.4.3 Qualifications of Photovoltaics (PV) Rooftop Applicator

The PV rooftop applicator must be approved, authorized, or certified by a Roof Integrated Solar Energy (RISE) Certified Solar Roofing Professional (CSRP), and comply with applicable codes, standards, and regulatory requirements to maintain the weatherproofing abilities of both the integrated roof system and photovoltaic system.

SECTION 07 53 23 Page 11

1.4.4 Fire Resistance

Complete roof covering assembly must:

a. Be Class A rated in accordance with ASTM E108, FM 4470 , or UL 790 ; and

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

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

1.4.5 Wind Uplift Resistance

NOTE: Det er mi ne t he r equi r ed wi nd upl i f t r esi st ance based on ASCE 7- 16 wi nd l oadi ng cal cul at i ons or appl i cabl e bui l di ng code r equi r ement s.

The speci f i ed FM appr oval r at i ng i ncor por at es a saf et y f act or of 2 over t he maxi mum cal cul at ed upl i f t pr essur e i n i nch- pound uni t s. Ther ef or e, a FM appr oval r at i ng of 1- 90 cor r el at es t o a maxi mum upl i f t cal cul at i on of 2. 2 kPa 45 psf . When speci f y i ng an FM r at ed syst em, ensur e t he desi gned r oof syst em i s capabl e of pr ovi di ng t he speci f i ed FM appr oval r at i ng. Wher e non- r at ed syst ems may be per mi ssi bl e, i ncl ude t he br acket ed por t i on of t he second sent ence and t he t hi r d sent ence.

Desi gn bal l ast f or l oose- l ai d bal l ast ed appl i cat i on i n accor dance wi t h ANSI / RMA/ SPRI RP- 4. Wher e bal l ast ed syst ems ar e speci f i ed i ncl ude t he br acket ed opt i on at t he end of t he par agr aph.

Del i neat e cal cul at ed val ues i n t he r oof speci f i cat i on or dr awi ngs. Ut i l i ze i ndependent l y t est ed and r at ed r oof syst ems, such as Fact or y Mut ual ( FM) , Under wr i t er s Labor at or i es ( UL) , and Si ngl e Pl y Roof i ng I ndust r y ( SPRI ) .

Provide a complete roof system assembly that is rated and installed to resist wind loads [indicated][calculated in accordance with ASCE 7-16 ] and validated by uplift resistance testing in accordance with Factory Mutual (FM) test procedures. Do not install non-rated systems except as approved by the Contracting Officer. Submit licensed engineer's wind uplift calculations and substantiating data to validate any non-rated roof system. Base wind uplift measurements based on a design wind speed of [_____] km/h [_____] mph in accordance with ASCE 7-16 and other applicable building code requirements

1.4.6 Preroofing Conference

After approval of submittals and before performing roofing [and insulation] system installation work, hold a preroofing conference to review the following:

SECTION 07 53 23 Page 12

a. Drawings, specifications and submittals related to the roof work;

b. Roof system components installation;

c. Procedure for the roof manufacturer's technical representative's onsite inspection and acceptance of the 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 representative;

d. 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; and

e. Quality control plan for the roof system installation;

f. Safety requirements.

Coordinate preroofing conference scheduling with the Contracting Officer.

The conference must be attended by the Contractor, the Contracting Officer's designated personnel, 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, 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

1.5.1 Delivery

Deliver materials in their original, unopened containers or wrappings with labels intact and legible. Where materials are covered by a referenced specification number, the labels must bear the specification number, type, class, and shelf life expiration date where applicable. Deliver materials in sufficient quantity to allow continuity of work.

1.5.2 Storage

Store and protect materials from damage and weather in accordance with manufacturer's printed instructions, except as specified otherwise. Keep materials clean and dry. Store and maintain adhesives, sealants, primers and other liquid materials above 15 degrees C 60 degrees F . Utilize insulated hot boxes or other enclosed warming devices in cold weather.

Mark and remove damaged materials from the site. Use pallets to support and canvas tarpaulins to completely cover material materials stored outdoors. Do not use polyethylene as a covering. Locate materials temporarily stored on the roof in approved areas, and distribute the load to stay within the live load limits of the roof construction. Remove unused materials from the roof at the end of each days work.

1.5.3 Handling

Prevent damage to edges and ends of roll materials. Do not install damaged materials in the work. Select and operate material handling equipment so as not to damage materials or applied roofing. Do not use materials contaminated by exposure or moisture. Remove contaminated materials from the site. When hazardous materials are involved, adhere to

SECTION 07 53 23 Page 13 the special precautions of the manufacturer. Adhesives may contain petroleum distillates and may be extremely flammable; prevent personnel from breathing vapors, and do not use near sparks or open flame.

1.6 ENVIRONMENTAL REQUIREMENTS

Do not install EPDM sheet roofing during high winds or inclement weather, or when there is ice, frost, moisture, or visible dampness on the substrate surface, or when condensation develops on surfaces during application. Unless recommended otherwise by the EPDM sheet manufacturer and approved by the Contracting Officer, do not install EPDM sheet when air temperature is below 4 degrees C 40 degrees F or within 3 degrees C 5 degrees F of the dewpoint. Follow manufacturer's printed instructions for installation during cold weather conditions.

1.7 SEQUENCING

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 counterflashing are installed as the work progresses. Ensure temporary protection measures are in place to preclude moisture intrusion or damage to installed materials.[ Apply roofing immediately following 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.]

1.8 WARRANTY

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. Provide a manufacturer's warranty that has no dollar limit, covers full system water-tightness and has a minimum duration of 20 years.

1.8.1 Roof Membrane Manufacturer Warranty

NOTE: I nsul at ed and r out i nel y occupi ed f aci l i t i es or f aci l i t i es cont ai ni ng sensi t i ve equi pment or oper at i ons r equi r e a war r ant y of not l ess t han 15 year s. Desi gner may speci f y 5 or 10 year manuf act ur er war r ant y on f aci l i t i es of smal l r oof ar ea and of mi nor i mpor t ance wher e i nt er i or s and cont ent s ar e not sever el y i mpact ed by pot ent i al wat er i nt r usi on. Envi r onment al l y cont r ol l ed i nt er i or s r equi r e mi ni mum 10 year war r ant y r egar dl ess of smal l s i ze.

Furnish the roof membrane manufacturer's 20 year no dollar limit roof system materials and installation workmanship warranty, including flashing, insulation, and accessories necessary for a watertight roof system construction. Write the warranty directly to the Government and commence 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

SECTION 07 53 23 Page 14 the facility, becomes non-watertight, shows evidence of moisture intrusion within the assembly, splits, tears, cracks, delaminates, separates at the seams, shrinks to the point of bridging or tenting membrane at transitions, 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 is the responsibility of the roof membrane manufacturer. The roof membrane manufacturer is responsible for all costs associated with the repair or replacement work.

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.

1.8.2 Roofing System Installer Warranty

The roof system installer must warrant for a period of two 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. Write the warranty directly to the Government. The roof system installer is responsible for correction of defective workmanship and replacement of damaged or affected materials. The roof system installer is responsible for all costs associated with the repair or replacement work.

1.8.3 Continuance of Warranty

Approve repair or replacement work that becomes necessary within the warranty period and accomplish 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.

1.9 CONFORMANCE AND COMPATIBILITY

Provide the entire roofing and flashing system in accordance with specified and indicated requirements, including fire and wind resistance requirements. Work not specifically addressed and any deviation from specified requirements must be in general accordance with recommendations of the NRCA RoofMan, membrane manufacturer published recommendations and details, ASTM D6369, and compatible with surrounding components and construction. Submit any deviation from specified or indicated requirements to the Contracting Officer for approval prior to installation.

1.10 ELIMINATION, PREVENTION OF FALL HAZARDS

NOTE: Any par t or component of t he bui l di ng, f aci l i t y , st r uct ur e, or equi pment r equi r i ng f ut ur e mai nt enance wor k must i ncor por at e i n t he desi gn f al l pr event i on met hods or t echni ques t o el i mi nat e f al l hazar ds, i n accor dance wi t h ANSI / ASSE A1264. 1. Fal l pr event i on met hods may i ncl ude i dent i f y i ng, desi gni ng, and i nst al l i ng anchor ages ( har d poi nt s) f or saf e use of f al l ar r est equi pment and syst ems.

Sel ect mat er i al s f or met al compat i bi l i t y i n or der t o mi ni mi ze cor r osi on, t ype 316 st ai nl ess st eel i s recommended.

SECTION 07 53 23 Page 15

1.10.1 Fall Protection

PART 2 PRODUCTS

2.1 MATERIALS

Coordinate with other specification sections related to the roof work.

Furnish a combination of specified materials that comprise a roof system acceptable to the roof membrane manufacturer and meeting specified requirements. Protect materials provided from defects and make suitable for the service and climatic conditions of the installation.

2.1.1 EPDM Sheet

NOTE: Ref er t o Desi gner Not e i n PART 1 - DESCRI PTI ON OF ROOF MEMBRANE SYSTEM f or gui dance r egar di ng membr ane at t achment met hod and i n edi t i ng t he membr ane mat er i al s r equi r ement s.

Speci f y mi ni mum 2. 3 mm 0. 090 i nch membr ane f or al l appl i cat i on. Rei nf or ced membr ane f or mechani cal l y f ast ened appl i cat i ons i n wi nd zones exceedi ng 160 km/h 100 mph, wi t hi n 8 km 5 mi l es of coast l i ne or within 457 m 1500 f eet of open body of wat er .

Typi cal l y speci f y 2. 3 mm 0. 090 i nch non- r ei nf or ced membr ane f or f ul l y adher ed or bal l ast ed appl i cat i on. When Type I I I membr ane i s r equi r ed t he adhesi ve i s t ypi cal l y a spr ay appl i ed compound, spr ay f oam adhesi ve, or hot asphal t . Modi f y r el at ed por t i ons of t hi s speci f i cat i on f or pr oper adhesi ve and appl i cat i on par amet er s when Type I I I membr ane i s specified.

Ethylene Propylene Diene Terpolymer (EPDM), ASTM D4637/D4637M , [Type I, non-reinforced][Type II, scrim or fabric reinforced][Type III, fabric or fleece backed], 2.3 mm 0.090 inch nominal thickness for [mechanically fastened] [fully adhered] [loose-laid ballasted] [combined fully adhered and mechanically fastened] application. Provide membrane with minimum thickness not less than minus 10 percent of the specified thickness value. EPDM membrane thickness specified is exclusive of backing material on the EPDM membrane. Principal polymer used in manufacture of the membrane sheet must be greater than 95 percent EPDM. Width and length of sheet must be [as recommended by the manufacturer.][maximum width attainable as recommended by the manufacturer to minimize field formed seams in the field of the roof.]

2.1.2 Energy [and Cool Roof] Performance

NOTE: St andar ds such as UFC 1- 200- 02 pr omot e t he use of cool r oof i ng, and i ncr eased ener gy conser vat i on t hr ough addi t i onal i nsul at i on. Desi gn

SECTION 07 53 23 Page 16 cool r oof s f ol l owi ng t he r equi r ement s i n UFC 3- 110- 03 " Roof i ng" Chapt er 1, Cool Roof s. Consi der t hat when cool r oof i ng i s used wi t h i nsul at i on R val ues gr eat er t han 24, t he ' cool r oof ' sur f ace has l i t t l e i f no i nf l uence on t he ener gy per f or mance of t he bui l di ng. Addi t i onal l y, desi gner s shoul d be awar e of t he possi bl e negat i ve i mpact s of usi ng cool r oof i ng t hat may r esul t i n uni nt ended consequences.

Desi gn mechani cal l y- f ast ened si ngl e- pl y r oof syst ems i n accor dance wi t h UFC 3- 110- 03 Roof i ng, Chapt er 2.

Condensat i on on t he under si de of mechani cal l y- f ast ened syst ems can r esul t i n i ce bui l d- up i n wi nt er , mol d gr owt h on t he f acer s, moi st ur e dr i ppi ng i nt o t he i nt er i or , and r epl acement of t he r oof s wi t h l ess t han f our year s of ser vi ce.

See Appendi x B of UFC 3- 110- 03 f or mor e i nf or mat i on. I nadequat e desi gn of cool r oof s i n ASHRAE cl i mat e zones 4 and hi gher have r esul t ed i n t he uni nt ended consequence of condensat i on bel ow t he membr ane- a r esul t of t he mat er i al ' s i nabi l i t y t o war m and dr i ve moi st ur e downwar d. Roof s t hat exper i ence t hi s condensat i on have had t o be r epl aced. Ot her uni nt ended consequences i ncl ude t he over heat i ng of masonr y wal l s, i nt er i or spaces, r oof t op pi pi ng and mechani cal equi pment as a r esul t of t he r ef l ect ed UV r ays.

NOTE: Desi gner t o speci f y t he r oof per f or mance by R- Val ue on t he dr awi ngs or st at ed i n ot her speci f i cat i on sect i ons.

NOTE: Faci l i t i es wi t h domi nant cool i ng l oads or i n mi l d or war m cl i mat e zones ar e r equi r ed t o meet " cool r oof i ng" r equi r ement s of FEMP. Desi gn cool r oof s f ol l owi ng t he r equi r ement s i n UFC 3- 110- 03 Roof i ng, Appendi x B and ASHRAE 90. 1 Chapt er 5, f or t he desi gn of i nsul at i on and ener gy per f or mance of t he bui l di ng.

NOTE: I f a cool r oof i s not sel ect ed i n ASHRAE zones 1 t hr u 3, desi gn must meet one of t he except i on r equi r ement s l i s t ed i n ASHRAE 90. 1 Chapt er 5 or pr ovi de t her mal i nsul at i on above t he deck wi t h an R val ue of 33 or gr eat er . Coor di nat e t hese r equi r ement s wi t h i nsul at i on desi gn and specifications.

Ret ai n t he next t o l ast br acket ed not e f or pr oj ect wi t h cool r oof r equi r ement . Ret ai n t he l ast br acket ed sent ence f or pr oj ect wi t h sust ai nabl e t hi r d par t y cer t i f i cat i on cr edi t r equi r ement f or r educed heat i s l and ef f ect

Install a roof system that meets an overall performance as specified on the drawings or by insulation specified in other sections.[ The roofing system will need to include a top surface finish that meets the criteria

SECTION 07 53 23 Page 17 for Cool Roof Products.[ Provide emittance and reflectance percentages, solar reflectance index values, [and] slopes [_____], to meet sustainable third party certification requirements for Heat Island Reduction .]]

2.1.3 Seam Tape

NOTE: Seam t apes have pr oven most ef f ect i ve i n mai nt ai ni ng l ong t er m seal of f i el d seams of r oof membr ane. Seam t apes can be di f f i cul t t o appl y t o membr ane f l ashi ng si t uat i ons. As such, l ap spl i ce adhesi ve or sel f - adher i ng f l ashi ng membr ane ar e used as al t er nat i ves i n di f f i cul t membr ane f l ashi ng ar eas.

Seam t apes must be mi ni mum 75 mm 3 i nch wi de. Some speci f i c s i t uat i ons may r equi r e wi der seam t apes as r ecommended by t he membr ane manuf act ur er .

Double-sided synthetic rubber tape, minimum 0.76 mm 0.03 inch thick, minimum 75 mm 3 inch wide. Utilize seam tape as recommended by the manufacturer's printed data for forming watertight bond of EPDM sheet materials to each other for the application specified and conditions encountered. 150 mm 6 inch wide tape is required for seam seals along lines of mechanical attachment of membrane.

2.1.4 Lap Splice Adhesive

NOTE: Lap spl i ce adhesi ve i s used f or some membr ane t o membr ane bond appl i cat i ons.

I ncl ude br acket ed opt i ons as appl i cabl e.

Low VOC mat er i al s may be r equi r ed i n some geogr aphi c l ocat i ons and on occupi ed bui l di ngs t o mi ni mi ze pot ent i al i r r i t at i on t o occupant s.

I ncl ude second and t hi r d br acket s opt i ons at end of par agr aph when l ap spl i ce adhesi ve i s pr ohi bi t ed f or f i el d seams of r oof membr ane.

[Low volatile organic compound (VOC)] synthetic rubber adhesive as supplied by roof membrane manufacturer and recommended by the manufacturer's printed data for forming watertight bond of EPDM sheet membrane materials to each other [in areas of membrane flashing]. [Do not use splice adhesive to form membrane seams in field of roof or at standard base flashing conditions.]

2.1.5 Bonding Adhesive

NOTE: Bondi ng adhesi ve i s used f or adher i ng EPDM membr ane t o mat er i al s ot her t han EPDM.

Low VOC mat er i al s may be r equi r ed i n some geogr aphi c l ocat i ons and on occupi ed bui l di ngs t o mi ni mi ze pot ent i al i r r i t at i on t o occupant s.

SECTION 07 53 23 Page 18

When Type I I I ( f l eece- backed) membr ane i s speci f i ed, i ncl ude t he f i r st br acket ed opt i on as appl i cabl e, del et e t he second br acket ed opt i on, and wr i t e i n a descr i pt i on of t he adhesi ve r equi r ed as t he t hi r d br acket ed opt i on. When hot asphal t i s t he speci f i ed adhesi ve, i n Par t 3, i ncl ude par amet er s f or heat i ng of asphal t and appl i cat i on s i mi l ar t o t hose f ound i n Section 07 51 13 BUI LT- UP ASPHALT ROOFI NG.

[Low volatile organic compound (VOC)] [synthetic rubber][_____] adhesive as supplied by roof membrane manufacturer and recommended by the manufacturer's printed data for bonding EPDM membrane materials to insulation, wood, metal, concrete or other substrate materials. Do not use bonding adhesive to bond membrane materials to each other.

2.1.6 Lap Cleaner, Lap Sealant, and Edge Treatment

As supplied by the roof membrane manufacturer and recommended by the manufacturer's printed data.

2.1.7 Water Cutoff Mastic/Water Block

As supplied by the roof membrane manufacturer and recommended by the manufacturer's printed data.

2.1.8 Membrane Flashings and Flashing Accessories

Provide membrane flashing, including self-adhering membrane flashing, perimeter flashing, flashing around roof penetrations, and prefabricated pipe seals, that is minimum 1.1 mm 0.045 inch cured EPDM, as recommended by the roof membrane manufacturer or minimum 1.4 mm 0.055 inch thick uncured EPDM sheet in compliance with ASTM D4811/D4811M , Type I. Use cured EPDM membrane to the maximum extent recommended by the roof membrane manufacturer. Limit uncured flashing material to reinforcing inside and outside corners and angle changes in plane of membrane, and to flash scuppers, pourable sealer pockets, and other formed penetrations or unusually shaped conditions as recommended by the roof membrane manufacturer where the use of cured material is impractical.

2.1.8.1 Flashing Tape

EPDM-backed synthetic rubber tape, minimum 150 mm 6 inch wide as supplied by the roof membrane manufacturer and recommended by the manufacturer's printed data.

2.1.9 Membrane Fasteners and Plates

Coated, corrosion-resistant fasteners as recommended by the roof membrane manufacturer and meeting the requirements of FM 4470 and FM APP GUIDE for Class I roof deck construction and the wind uplift resistance specified.

As supplied and warranted for the substrate type(s) by EPDM sheet manufacturer and recommended by EPDM sheet manufacturer's printed data.

2.1.9.1 Stress Plates for Fasteners

Flat corrosion-resistant round stress plates as recommended by the roof membrane manufacturer's printed instructions and meeting the requirements

SECTION 07 53 23 Page 19 of FM 4470 ; not less than 50 mm 2 inch in diameter. Provide pre-formed discs to prevent dishing or cupping.

2.1.9.2 Auxiliary Fasteners

Corrosion resistant screws, nails, or anchors suitable for intended attachment purpose and as recommended by the roof membrane manufacturer.

2.1.9.3 Powder-Driven Fasteners

Powder-driven fasteners may be used only when approved in writing.

2.1.9.4 Metal Disks

Provide flat metal disks of minimum 25 mm 1 inch in diameter, made of nonferrous material compatible with the nails or fasteners.

[ 2.1.10 Ballast

NOTE: Del et e t hese par agr aphs unl ess l oose- l ai d bal l ast ed syst em i s speci f i ed. Nor mal l y speci f y st one bal l ast f or a bal l ast ed syst em. Speci f y paver bal l ast when:

a. Ther e i s danger of aggr egat e bei ng dr awn i nt o ai r i nt akes of j et ai r cr af t .

b. Ther e i s danger of wi nd- bl own aggr egat e j eopar di z i ng pr oper t y and l i f e saf et y.

c. I n wi nd zones exceedi ng 160 km/ h 100 mph, wi t hi n 8 km 5 mi l es of coast l i ne, wi t hi n 457 m 1500 f eet of open body of wat er , and on or adj acent t o cr i t i cal f aci l i t i es such as hospi t al s.

d. Heavy f oot t r af f i c over l ar ge ar eas of r oof i s expected.

[ 2.1.10.1 Stone Ballast

Smooth, rounded, river-washed stone graded in accordance with ASTM D448, sizes 1, 2, 24, 3, and 4, nominal 19 mm to 38 mm 3/4 inch to 1-1/2 diameter, except as recommended otherwise by the roof membrane manufacturer and approved by the Contracting Officer.

][ 2.1.10.2 Ballast Pavers

NOTE: Speci f y paver wei ght based on cal cul at ed wi nd l oad condi t i ons and ANSI / RMA/ SPRI RP- 4.

Li ght wei ght i nt er l ocki ng paver bal l ast may be used i n l i eu of heavi er wei ght non- i nt er l ocki ng paver s i n wi nd zones i n excess of 160 km/ h 100 mph, wi t hi n 8 km 5 mi l es of coast l i ne or wi t hi n 457 m 1500 f eet of open body of wat er . Non- i nt er l ocki ng paver s shoul d wei gh not l ess t han 88 kg per squar e met er 18 pounds

SECTION 07 53 23 Page 20 per squar e f oot .

El evat ed paver syst ems and paver s i nt ended t o suppor t pedest r i an t r af f i c , such as pl aza decks or obser vat i on decks, shoul d be mi ni mum 50 mm 2 i nch thick, 600 mm 24 i nch squar e, and mi ni mum 51, 700 kPa 7500 psi compr essi ve st r engt h.

Speci f y paver pedest al s f or paver s wi t hout dr ai nage channel s. Speci f y adj ust abl e pedest al s f or syst ems r equi r ed t o be el evat ed t o a l evel pl ane such as a pl aza or obser vat i on deck.

Provide weather resistant, precast [interlocking] concrete roof pavers [with drainage channels on the underside], and as recommended by the roof membrane manufacturer. Provide pavers of minimum 20,680 kPa 3000 psi 51,700 kPa 7500 psi compressive strength, weigh not less than 58 kg per square meter 12 pounds per square foot 88 kg per square meter 18 pounds per square foot [_____], not less than 30 mm 1-1/4 inch 50 mm 2 inch thick and nominal 600 mm 24 inch [_____] in length and width and without sharp edges and projections. [Elevate pavers above the roof membrane surface with paver manufacturer's recommended [adjustable] pedestal system [to provide for level walking surface] as required by the roof membrane manufacturer.]

] ][ 2.1.11 Protection Mat / Slip Sheet

NOTE: Speci f y pr ot ect i on mat f or appl i cat i on bet ween r oof membr ane and bal l ast when bal l ast ed syst ems ar e speci f i ed.

Minimum 154 gram per square meter 4.5 ounce per square yard 200 gram per square meter 6 ounce per square yard ultraviolet resistant polypropylene, non-woven, needle punched fabric for use as protection mat under ballast system and as recommended by the roof membrane manufacturer.

][ 2.1.12 Pre-Manufactured Accessories

NOTE: Edi t , del et e, and i nser t accessor y mat er i al s r equi r ement s as r equi r ed f or t he speci f i c pr oj ect and component s t o be i nst al l ed.

Pre-manufactured accessories must be manufacturer's standard for intended purpose,[ comply with applicable specification section,] compatible with the membrane roof system and approved for use by the roof membrane manufacturer.

[ 2.1.12.1 Pre-fabricated Curbs

Provide [_____] gauge [G90 galvanized][AZ55 galvalume][_____] curbs with minimum 100 mm 4 inch flange for attachment to roof nailers. Provide minimum height of 250 mm 10 inch above the finished roof membrane surface.

SECTION 07 53 23 Page 21

] ][ 2.1.13 [Rubber Walkboards] [and] [Precast Concrete Paver Block Walkways]

NOTE: Use paver s or r ubber wal kboar ds as wal kways wher e t he r oof or ar eas of t he r oof ar e i nt ended t o bear f oot t r af f i c f or mai nt enance or ot her pur poses once per mont h or mor e f r equent l y.

Provide [either of] the following:

[ 2.1.13.1 Rubber Walkboards

Preformed reprocessed rubber, compatible with the EPDM sheet, 6 mm 1/4 inch minimum thickness, and weighing not less than .68 kg per square meter 1-1/2 pounds per square foot .

][ 2.1.13.2 Precast Concrete Paver Block

Precast concrete blocks, 450 mm by 450 mm 18 inch by 18 inch 600 mm by 600 mm 24 inch by 24 inch , without sharp edges and projections, and weighing no more than 20 kg 45 pounds 36 kg 80 pounds each.

] ] 2.1.14 Roof Insulation Below EPDM Sheet

NOTE: I f t he r oof i ng syst em cont ai ns i nsul at i on, coor di nat e wi t h t he appr opr i at e i nsul at i on speci f i cat i on sect i on. The i nsul at i on speci f i cat i on shoul d i ncl ude mat er i al s and i nst al l at i on up t o t he subst r at e on whi ch t he r oof membr ane i s appl i ed.

Do not f ul l y adher e s i ngl e pl y membr ane t o per l i t e, pol yst yr ene, or st andar d wood f i ber i nsul at i on boar d. Hi gh densi t y wood f i ber boar d i s accept abl e i f appr oved by t he r oof membr ane manuf act ur er f or t he wi nd r esi st ance condi t i on speci f i ed.

Coor di nat e i nsul at i on syst em at t achment wi t h t he wi nd r esi st ance r equi r ement s. I n many i nst ances, i nsul at i on syst em must be adher ed or mechani cal l y f ast ened t o deck i n cor ner and per i met er ar eas, i f not t hr oughout t he f i el d of t he r oof , when speci f y i ng a bal l ast ed r oof syst em.

Ensure insulation system and facer material is compatible with membrane application specified and as approved by the roof membrane manufacturer.

[ 2.1.15 Top Coating

NOTE: Top coat i ngs can pr ovi de Ener gy St ar c l assi f i cat i on when appl i ed as f i nal sur f ace.

Typi cal col or s ar e whi t e, t an, and ot her l i ght col or s. I n r evi ew of t he over al l per f or mance of t he r oof , col or and mat er i al s speci f i ed ear l i er i n t hi s speci f i cat i on, t he desi gner has t he opt i on t o i ncl ude Ener gy St ar r at i ng by i ncl udi ng t he

SECTION 07 53 23 Page 22 par agr aph bel ow.

Provide a top coating product that is Energy Star labeled and is produced and compatible with the roof material of this specification. Provide data identifying Energy Star label for top coating product. Install to the manufacturer's written installation methods. Provide written confirmation that installation of a top coat will not modify or void the required roof warranty.

] 2.1.16 Photovoltaic (PV) Systems - Rack Mounted Systems

NOTE: The i nst al l at i on of a PV r oof syst em over exi st i ng r oof syst ems shoul d be under t aken wi t h ext r eme caut i on. Do not i nst al l PV syst ems on r oof s wi t h a shor t er expect ed ser vi ce l i f e t han t he new PV syst em. Pr i or t o t he desi gn of such syst ems t he f ol l owi ng must be under t aken:

a. Det er mi ne i f t he exi st i ng r oof st r uct ur e can handl e t he ant i c i pat ed r oof l oad i ncr ease.

b. I nspect and det er mi ne t hat t he exi st i ng Page 20 r oof syst em has at l east 10 year s of ser vi ce l i f e r emai ni ng. I f not , r emove t he exi st i ng r oof and desi gn a new r epl acement r oof syst em i n t andem wi t h t he phot ovol t ai c syst em.

c. I f 10 year s r emai ni ng ser vi ce l i f e r emai ns, ensur e t he desi gn of t he i nt er sect i ng det ai l s, r equi r ed r oof pr ot ect i on, r e- i nspect i ons, and war r ant y r equi r ement s f or mai nt ai ni ng t he r oof syst em has been coor di nat ed wi t h t he i nst al l at i on and manuf act ur er s ' war r ant i es.

d. Desi gn t he r oof r el at ed det ai l s f or ant i c i pat ed r oof r epl acement wor k. Coor di nat e wi t h t he PV syst em desi gner t o ant i c i pat e and pl an f or f ut ur e r oof r epl acement .

e. PV equi pment on a r oof t op cr eat es addi t i onal r oof pr ot ect i on r equi r ement s dur i ng i ni t i al i nst al l at i on and t hr oughout t he PV l i f e- cycl e.

Ensur e a r oof pr ot ect i on pr ogr am i s speci f i ed dur i ng t he PV syst em i nst al l at i on.

f . Per manent l y af f i x PV suppor t s t o st anchi ons whi ch ar e anchor ed t o t he bui l di ng st r uct ur e.

Adhere to the following guidelines:

a. Building Owners Guide to Roof-mounted PV Systems, published by NRCA.

b. Guidelines for Roof-Mounted PV Systems, published by NRCA.

SECTION 07 53 23 Page 23

2.1.17 Wood Products

NOTE: Coor di nat e wi t h Sect i on 06 10 00 ROUGH CARPENTRY. Some f i r e r et ar dant t r eat ment ( FRT) chemi cal s may af f ect EPDM mat er i al s. Submi t SDS l i st i ng act i ve i ngr edi ent s f or t he FRT wood t o EPDM manuf act ur er pr i or t o appl y i ng EPDM mat er i al s i n cont act wi t h FRT wood.

Do not allow fire retardant treated materials be in contact with EPDM membrane or EPDM accessory products, unless approved by the membrane manufacturer and the Contracting Officer.

2.1.18 Membrane Liner

[Self-adhering ]EPDM membrane liner conforming to ASTM D4637/D4637M , or other waterproof membrane liner material as approved by the…