07 51 13.pdf

Ti nker AFB, OK TAFB Techni cal Spr ci f i cat i ons 2019

SECTI ON 07 51 13

BUI LT- UP ASPHALT ROOFI NG

PART 1 GENERAL

1. 1 REFERENCES

The publ i cat i ons l i s t ed bel ow f or m a par t of t hi s speci f i cat i on t o t he ext ent r ef er enced. The publ i cat i ons ar e r ef er r ed t o wi t hi n t he t ext by t he basi c desi gnat i on onl y.

AMERI CAN SOCI ETY OF CI VI L ENGI NEERS ( ASCE)

ASCE 7 ( 2010; Er r at a 2011; Supp 1 2013) Mi ni mum Desi gn Loads f or Bui l di ngs and Ot her Structures

ASTM I NTERNATI ONAL ( ASTM)

ASTM C1153 ( 2010) St andar d Pr act i ce f or Locat i on of Wet I nsul at i on i n Roof i ng Syst ems Usi ng I nf r ar ed I magi ng

ASTM C208 ( 2012) Cel l ul osi c Fi ber I nsul at i ng Boar d

ASTM C728 ( 2016) Per l i t e Ther mal I nsul at i on Boar d

ASTM D1863/ D1863M ( 2005; R 2011; E 2012) Mi ner al Aggr egat e Used on Bui l t - Up Roof s

ASTM D1864/ D1864M ( 1989; E 2009; R 2009) Moi st ur e i n Mi ner al Aggr egat e Used on Bui l t - Up Roof s

ASTM D1970/ D1970M ( 2015a) Sel f - Adher i ng Pol ymer Modi f i ed Bi t umi nous Sheet Mat er i al s Used as St eep Roof i ng Under l ayment f or I ce Dam Pr ot ect i on

ASTM D2170/ D2170M ( 2010) Ki nemat i c Vi scosi t y of Asphal t s (Bitumens)

ASTM D2178/ D2178M ( 2015a) Asphal t Gl ass Fel t Used i n Roof i ng and Wat er pr oof i ng

ASTM D312/ D312M ( 2016) St andar d Speci f i cat i on f or Asphal t Used i n Roof i ng

ASTM D3617 ( 2007; R 2015; E 2015) Sampl i ng and Anal ysi s of New Bui l t - Up Roof Membr anes

ASTM D41/ D41M ( 2011) Asphal t Pr i mer Used i n Roof i ng, Damppr oof i ng, and Wat er pr oof i ng

ASTM D4263 ( 1983; R 2012) I ndi cat i ng Moi st ur e i n Concr et e by t he Pl ast i c Sheet Met hod

ASTM D4402/ D4402M ( 2015) Vi scosi t y Det er mi nat i on of Asphal t

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ASTM D448 ( 2012) Si zes of Aggr egat e f or Road and Br i dge Const r uct i on

ASTM D4586/ D4586M ( 2007; E 2012; R 2012) Asphal t Roof Cement , Asbest os- Fr ee

ASTM D4601/ D4601M ( 2004; R 2012) Asphal t - Coat ed Gl ass Fi ber Base Sheet Used i n Roof i ng

ASTM D4637/ D4637M ( 2015) EPDM Sheet Used i n Si ngl e- Pl y Roof Membrane

ASTM D4869/ D4869M ( 2016) St andar d Speci f i cat i on f or Asphal t - Sat ur at ed Or gani c Fel t Under l ayment Used i n St eep Sl ope Roof i ng

ASTM D4897/ D4897M ( 2001; R 2009) St andar d Speci f i cat i on f or Asphal t - Coat ed Gl ass- Fi ber Vent i ng Base Sheet Used i n Roof i ng

ASTM D517 ( 1998; R 2008) Asphal t Pl ank

ASTM D6162/ D6162M ( 2000a; R 2015; E 2015) St andar d Speci f i cat i on f or St yr ene But adi ene St yr ene ( SBS) Modi f i ed Bi t umi nous Sheet Mat er i al s Usi ng a Combi nat i on of Pol yest er and Gl ass Fi ber Rei nf or cement s

ASTM D6163/ D6163M ( 2000; R 2015; E 2015) St andar d Speci f i cat i on f or St yr ene But adi ene St yr ene ( SBS) Modi f i ed Bi t umi nous Sheet Mat er i al s Usi ng Gl ass Fi ber Rei nf or cement s

ASTM D6164/ D6164M ( 2011) St yr ene But adi ene St yr ene ( SBS) Modi f i ed Bi t umi nous Sheet Mat er i al s Usi ng Pol yest er Rei nf or cement s

ASTM D6757/ D6757M ( 2016) St andar d Speci f i cat i on f or Under l ayment Fel t Cont ai ni ng I nor gani c Fi ber s Used i n St eep- Sl ope Roof i ng

ASTM E108 ( 2011) Fi r e Test s of Roof Cover i ngs

FM GLOBAL ( FM)

FM 4470 ( 2010) Si ngl e- Pl y, Pol ymer - Modi f i ed Bi t umen Sheet , Bui l t - up Roof ( BUR) , and Li qui d Appl i ed Roof Assembl i es f or Use i n Cl ass 1 and Noncombust i bl e Roof Deck Construction

FM APP GUI DE ( updat ed on- l i ne) Appr oval Gui de http://www.approvalguide.com/

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NATI ONAL ROOFI NG CONTRACTORS ASSOCI ATI ON ( NRCA)

NRCA Roof Man ( 2011 t hr u 2014) The NRCA Roof i ng Manual

SI NGLE PLY ROOFI NG I NDUSTRY ( SPRI )

ANSI / SPRI RD- 1 ( 2009) Per f or mance St andar d f or Ret r of i t Drains

UNDERWRI TERS LABORATORI ES ( UL)

UL 790 ( 2004; Repr i nt Jul 2014) St andar d Test Met hods f or Fi r e Test s of Roof Cover i ngs

UL RMSD ( 2012) Roof i ng Mat er i al s and Syst ems Directory

1. 2 DESCRI PTI ON OF ROOF MEMBRANE SYSTEM

Asphal t appl i ed, t hr ee- pl y f el t wi t h gr anul e- sur f aced modi f i ed bi t umen cap sheet bui l t - up r oof membr ane syst em.

1. 3 SUBMITTALS

Gover nment appr oval i s r equi r ed f or submi t t al s wi t h a " G" desi gnat i on;

submi t t al s not havi ng a " G" desi gnat i on ar e f or Cont r act or Qual i t y Cont r ol appr oval . Submi t t he f ol l owi ng i n accor dance wi t h Sect i on 01 33 00

SUBMI TTAL PROCEDURES:

SD- 03 Pr oduct Dat a

Wi nd Upl i f t Cal cul at i ons; G

Asphalt

Fel t s, i ncl udi ng pl y f el t , base sheet and vent i l at i ng f el t as appl i cabl e; G

Gr anul e Sur f ace Modi f i ed Bi t umen Cap Sheet ; G

FLASHI NG MEMBRANE; G

Fasteners

Primer

Asphal t Roof Cement

Wal kpad Mat er i al sCant St r i ps

Cer t i f i cat e at t est i ng t hat t he f i ber boar d f ur ni shed f or t he pr oj ect cont ai ns r ecover ed mat er i al , and showi ng an est i mat ed per cent of such r ecover ed mat er i al .

Pr e- Manuf act ur ed Accessor i es t o be i ncor por at ed i n t he syst em i nst al l at i on; G

Roof Wal kways

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Sampl e War r ant i es cer t i f i cat es; G

Submi t al l dat a r equi r ed wi t h r equi r ement s of t hi s sect i on.

I ncl ude i n Dat a wr i t t en accept ance by t he r oof membr ane manuf act ur er of t he pr oduct s and accessor i es pr ovi ded. Li st pr oduct s i n t he appl i cabl e wi nd upl i f t and f i r e r at i ng c l assi f i cat i on l i s t i ngs, unl ess appr oved ot her wi se by t he Cont r act i ng Of f i cer .

SD- 06 Test Repor t s

Sampl es of Bui l t - Up Roof i ng

Submi t t est r esul t s on r oof i ng f i el d sampl es as r equi r ed, ver i f y i ng composi t i on of sampl e. Submi t s i x copi es of l abor at or y anal ysi s wi t hi n 30 cal endar days af t er sampl es ar e t aken. Submi t r epor t s i n accor dance wi t h ASTM D3617.

SD- 07 Cer t i f i cat es

Bi l l of Ladi ng

Submi t when l abel s of asphal t cont ai ner s do not i ndi cat e t he f i ni shed bl owi ng t emper at ur e, f l ash poi nt and equi v i scous temperature.

Qual i f i cat i ons of Appl i cat or

Submi t evi dence of t he r oof i ng syst em manuf act ur er ' s appr oval .

SD- 08 Manuf act ur er ' s I nst r uct i ons

Fel t s; G

Fl ashi ngs; G

Modi f i ed Bi t umen Cap Sheet ; G

Base Sheet at t achment , i ncl udi ng pat t er n and f r equency of mechani cal at t achment s r equi r ed i n f i el d of r oof , cor ner s, and per i met er s t o pr ovi de f or t he speci f i ed wi nd r esi st ance.

Asphalt

Primer

Roof Cement

Fasteners

Col d Weat her Condi t i ons i nst al l at i on; G

I ncl ude det ai l ed appl i cat i on i nst r uct i ons and st andar d manuf act ur er dr awi ngs al t er ed as r equi r ed by t hese speci f i cat i ons.

Expl i c i t l y i dent i f y i n wr i t i ng, di f f er ences bet ween manuf act ur er ' s i nst r uct i ons and t he speci f i ed r equi r ement s.

SD- 11 Cl oseout Submi t t al s

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WARRANTY

I NFORMATI ON CARD

1. 4 QUALI TY ASSURANCE

1. 4. 1 Qual i f i cat i ons of Appl i cat or

The r oof i ng syst em appl i cat or must be appr oved, aut hor i zed, or l i censed i n wr i t i ng by t he r oof i ng syst em manuf act ur er and must have a mi ni mum of 3 year s exper i ence as an appr oved, aut hor i zed, or l i censed appl i cat or wi t h t he manuf act ur er and be appr oved at a l evel capabl e of pr ovi di ng t he speci f i ed war r ant y.

1. 4. 2 Fi r e Resi st ance

Compl et e r oof cover i ng assembl y must :

a. Be Cl ass A r at ed i n accor dance wi t h ASTM E108 , FM 4470, or UL 790; and

b. Be l i s t ed as par t of Fi r e- Cl assi f i ed r oof deck const r uct i on i n UL RMSD, or Cl ass I r oof deck const r uct i on i n FM APP GUI DE.

1. 4. 3 Wi nd Upl i f t Resi st ance

The compl et e r oof syst em assembl y shal l be r at ed and i nst al l ed t o r esi st wi nd l oads cal cul at ed i n accor dance wi t h ASCE 7 and val i dat ed by upl i f t r esi st ance t est i ng i n accor dance wi t h Fact or y Mut ual ( FM) t est pr ocedur es. Do not i nst al l non- r at ed syst ems except as appr oved by t he Cont r act i ng Of f i cer . Submi t l i censed engi neer ' s wi nd upl i f t cal cul at i ons and subst ant i at i ng dat a t o val i dat e any non- r at ed r oof syst em. Base wi nd upl i f t measur ement s on a desi gn wi nd speed of 90 mph i n accor dance wi t h

ASCE 7

and/ or ot her appl i cabl e bui l di ng code r equi r ement s.

1. 4. 4 Pr er oof i ng Conf er ence

Af t er appr oval of submi t t al s and bef or e per f or mi ng r oof i ng syst em i nst al l at i on wor k, hol d a pr er oof i ng conf er ence t o r evi ew t he f ol l owi ng:

a. Dr awi ngs and speci f i cat i ons and submi t t al s r el at ed t o t he r oof wor k;

b. Roof syst em component s i nst al l at i on;

c. Pr ocedur e f or t he r oof manuf act ur er ' s t echni cal r epr esent at i ve' s onsi t e i nspect i on and accept ance of t he r oof i ng subst r at e, t he name of t he manuf act ur er ' s t echni cal r epr esent at i ves, t he f r equency of t he onsi t e v i s i t s, di st r i but i on of copi es of t he i nspect i on r epor t s f r om t he manuf act ur er ' s t echni cal r epr esent at i ves t o r oof manuf act ur er ;

d. Cont r act or ' s pl an f or coor di nat i on of t he wor k of t he var i ous t r ades i nvol ved i n pr ovi di ng t he r oof i ng syst em and ot her component s secur ed t o t he r oof i ng; and

e. Qual i t y cont r ol pl an f or t he r oof syst em i nst al l at i on;

f . Saf et y r equi r ement s.

Coor di nat e pr er oof i ng conf er ence schedul i ng wi t h t he Cont r act i ng Of f i cer .

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The conf er ence must be at t ended by t he Cont r act or , t he Cont r act i ng Of f i cer ' s desi gnat ed per sonnel , and per sonnel di r ect l y r esponsi bl e f or t he i nst al l at i on of r oof i ng and i nsul at i on, f l ashi ng and sheet met al wor k, mechani cal and el ect r i cal wor k, ot her t r ades i nt er f aci ng wi t h t he r oof wor k, and r epr esent at i ve of t he r oof i ng mat er i al s manuf act ur er . Bef or e begi nni ng r oof i ng wor k, pr ovi de a copy of meet i ng not es and act i on i t ems t o al l at t endi ng par t i es. Not e act i on i t ems r equi r i ng r esol ut i on pr i or t o st ar t of r oof wor k.

1. 5 DELI VERY, STORAGE, AND HANDLI NG

1. 5. 1 Delivery

Del i ver mat er i al s i n manuf act ur er s ' or i gi nal unopened cont ai ner s and r ol l s wi t h manuf act ur er ' s l abel s i nt act and l egi bl e. Mar k and r emove wet or damaged mat er i al s f r om si t e. Wher e mat er i al s ar e cover ed by a r ef er enced speci f i cat i on, cont ai ner must bear speci f i cat i on number , t ype, and cl ass, as appl i cabl e. I ndi cat e on l abel s or bi l l of l adi ng f or r oof i ng asphal t t he asphal t t ype, f i ni shed bl owi ng t emper at ur e ( FBT) , f l ash poi nt ( FP) , and equi v i scous t emper at ur e ( EVT) , t hat i s , t he t emper at ur e at whi ch t he vi scosi t y i s ei t her 125 cent i st okes when t est ed i n accor dance wi t h ASTM D2170/ D2170M or 75 cent i poi se when t est ed i n accor dance wi t h ASTM D4402/ D4402M. Del i ver mat er i al s i n suf f i c i ent quant i t y t o al l ow wor k t o pr oceed wi t hout i nt er r upt i on.

1. 5. 2 Storage

Pr ot ect mat er i al s agai nst moi st ur e absor pt i on, cont ami nat i on, or ot her damage. Avoi d cr ushi ng or cr i nkl i ng of r ol l mat er i al s. St or e r ol l mat er i al s on end on cl ean r ai sed pl at f or ms i n dr y l ocat i ons i n encl osed bui l di ngs or t r ai l er s wi t h adequat e vent i l at i on. Do not st or e r ol l mat er i al s i n bui l di ngs under const r uct i on unt i l concr et e, mor t ar , and pl ast er wor k ar e f i ni shed and dr y. Do not st or e mat er i al s out door s unl ess appr oved by t he Cont r act i ng Of f i cer . Compl et el y cover f el t s st or ed out door s, on and of f r oof , wi t h wat er pr oof canvas pr ot ect i ve cover i ng. Do not use pol yet hyl ene sheet as a cover i ng. Ti e cover i ng secur el y t o pal l et s t o make compl et el y weat her pr oof and yet pr ovi de suf f i c i ent vent i l at i on t o pr event condensat i on. Mai nt ai n r ol l mat er i al s at t emper at ur e above 50 degr ees F f or a 24- hour per i od i mmedi at el y pr i or t o appl i cat i on. Keep aggr egat e dr y as def i ned by ASTM D1863/ D1863M. Pl ace onl y t hose mat er i al s t o be used dur i ng one day' s wor k on t he r oof at one t i me. Remove unused mat er i al s f r om t he r oof at t he end of each day' s wor k. I mmedi at el y r emove wet , cont ami nat ed or ot her wi se damaged or unsui t abl e mat er i al s f r om t he si t e. Damaged mat er i al s may be mar ked by t he Cont r act i ng Of f i cer .

1. 5. 3 Handling

Pr event damage t o edges and ends of r ol l mat er i al s. Do not i nst al l damaged mat er i al s i n t he wor k. Sel ect and oper at e mat er i al handl i ng equi pment so as not t o damage mat er i al s or appl i ed r oof i ng.

1. 6 ENVI RONMENTAL CONDI TI ONS

Do not i nst al l r oof i ng dur i ng pr eci pi t at i on, or f og, or when ai r t emper at ur e i s bel ow 40 degr ees F, or when t her e i s i ce, f r ost , moi st ur e or v i s i bl e dampness on r oof deck. Rest r i ct i on on appl i cat i on of r oof i ng mat er i al s bel ow 40 degr ees F may be wai ved i f Cont r act or devi ses a means, sat i sf act or y t o Cont r act i ng Of f i cer , of : ( 1) mai nt ai ni ng sur r oundi ng

Apr i l 2019 Page 6 SECTI ON 07 51 13 t emper at ur e above 40 degr ees F; ( 2) mai nt ai ni ng appl i cat i on t emper at ur e of heat ed mat er i al s wi t hout exceedi ng maxi mum speci f i ed heat i ng t emper at ur e;

and f ol l ows ot her r ecommendat i ons of t he membr ane manuf act ur er f or appl i cat i on i n col d weat her condi t i ons.

1. 7 SEQUENCING

Coor di nat e t he wor k wi t h ot her t r ades t o ensur e t hat component s whi ch ar e t o be secur ed t o or st r i pped i nt o t he r oof i ng syst em ar e avai l abl e and t hat per manent f l ashi ng and count er f l ashi ng ar e i nst al l ed as t he wor k pr ogr esses. Ensur e t empor ar y pr ot ect i on measur es ar e i n pl ace t o pr ecl ude moi st ur e i nt r usi on or damage t o i nst al l ed mat er i al s. Appl i cat i on of r oof i ng must i mmedi at el y f ol l ow appl i cat i on of i nsul at i on as a cont i nuous oper at i on. Coor di nat e r oof i ng oper at i ons wi t h i nsul at i on wor k so t hat al l r oof i nsul at i on appl i ed each day i s cover ed wi t h compl et e f el t pl y i nst al l at i on t he same day and i s wat er t i ght .

1. 8 WARRANTY

Pr ovi de r oof syst em mat er i al and wor kmanshi p war r ant i es meet i ng speci f i ed r equi r ement s. Pr ovi de r evi s i on or amendment t o st andar d membr ane manuf act ur er war r ant y t o compl y wi t h t he speci f i ed r equi r ement s. Mi ni mum manuf act ur er war r ant y shal l have no dol l ar l i mi t , cover f ul l syst em wat er - t i ght ness, and shal l have a mi ni mum dur at i on of 20 year s.

1. 8. 1 Roof Membr ane Manuf act ur er War r ant y

Fur ni sh t he r oof membr ane manuf act ur er ' s 20- year no dol l ar l i mi t r oof syst em mat er i al s and i nst al l at i on wor kmanshi p war r ant y, i ncl udi ng f l ashi ng, i nsul at i on, and accessor i es necessar y f or a wat er t i ght r oof syst em const r uct i on. Wr i t e t he war r ant y di r ect l y t o t he Gover nment commenci ng at t he t i me of Gover nment ' s accept ance of t he r oof wor k.

Pr ovi de t he f ol l owi ng st at ement f or such war r ant y:

a. I f wi t hi n t he war r ant y per i od t he r oof syst em, as i nst al l ed f or i t s i nt ended use i n t he nor mal c l i mat i c and envi r onment al condi t i ons of t he f aci l i t y , becomes non- wat er t i ght , shows evi dence of moi st ur e i nt r usi on wi t hi n t he assembl y, bl i s t er s, spl i t s, t ear s, del ami nat es, separ at es at t he seams, or shows evi dence of excessi ve weat her i ng due t o def ect i ve mat er i al s or i nst al l at i on wor kmanshi p, t he r epai r or r epl acement of t he def ect i ve and damaged mat er i al s of t he r oof syst em assembl y and cor r ect i on of def ect i ve wor kmanshi p ar e t he r esponsi bi l i t y of t he r oof membr ane manuf act ur er . Al l cost s associ at ed wi t h t he r epai r or r epl acement wor k ar e t he r esponsi bi l i t y of t he r oof membr ane manuf act ur er .

b. The war r ant y must r emai n i n f ul l f or ce and ef f ect , i ncl udi ng emer gency t empor ar y r epai r s per f or med by ot her s, when t he manuf act ur er or hi s appr oved appl i cat or f ai l t o per f or m t he r epai r s wi t hi n 72 hour s of notification.

1. 8. 2 Roof i ng Syst em I nst al l er War r ant y

The r oof syst em i nst al l er must war r ant f or a mi ni mum per i od of t wo year s t hat t he r oof syst em, as i nst al l ed, i s f r ee f r om def ect s i n i nst al l at i on wor kmanshi p, t o i ncl ude t he r oof membr ane, f l ashi ng, i nsul at i on, accessor i es, at t achment s, and sheet met al i nst al l at i on i nt egr al t o a compl et e wat er t i ght r oof syst em assembl y. Wr i t e t he war r ant y di r ect l y t o t he Gover nment . The r oof syst em i nst al l er i s r esponsi bl e f or cor r ect i on

Apr i l 2019 Page 7 SECTI ON 07 51 13 of def ect i ve wor kmanshi p and r epl acement of damaged or af f ect ed mat er i al s. The r oof syst em i nst al l er i s r esponsi bl e f or al l cost s associ at ed wi t h t he r epai r or r epl acement wor k.

1. 8. 3 Cont i nuance of War r ant y

Appr ove r epai r or r epl acement wor k t hat becomes necessar y wi t hi n t he war r ant y per i od and accompl i shed i n a manner so as t o r est or e t he i nt egr i t y of t he r oof syst em assembl y and val i di t y of t he r oof membr ane manuf act ur er war r ant y f or t he r emai nder of t he manuf act ur er war r ant y period.

1. 9 CONFORMANCE AND COMPATI BI LI TY

The ent i r e r oof i ng and f l ashi ng syst em must be i n accor dance wi t h speci f i ed and i ndi cat ed r equi r ement s, i ncl udi ng f i r e and wi nd r esi st ance r equi r ement s. Wor k not speci f i cal l y addr essed and any devi at i on f r om speci f i ed r equi r ement s must be i n gener al accor dance wi t h r ecommendat i ons of t he NRCA Roof Man, membr ane manuf act ur er publ i shed r ecommendat i ons and det ai l s, and compat i bl e wi t h sur r oundi ng component s and const r uct i on.

Submi t any devi at i on f r om speci f i ed or i ndi cat ed r equi r ement s t o t he Cont r act i ng Of f i cer f or appr oval pr i or t o i nst al l at i on.

1. 10 SUSTAI NABI LI TY REPORTI NG

1. 10. 1 Recycl ed Mat er i al s

Cont r act or shal l sel ect mat er i al s so t hat t he sum of post - consumer r ecycl ed cont ent val ue pl us one- hal f of post - i ndust r i al r ecycl ed cont ent val ue const i t ut es at l east 10 per cent of t he t ot al mat er i al s cost f or t he pr oj ect . EPA Compr ehensi ve Pr ocur ement Gui del i nes has a suppl i er dat abase: http://www.epa.gov/cpg/products/

PART 2 PRODUCTS

2. 1 GENERAL

Fur ni sh a combi nat i on of speci f i ed mat er i al s t hat compr i se t he membr ane manuf act ur er ' s st andar d syst em of t he number and t ype of pl i es speci f i ed.

Mat er i al s pr ovi ded must be appr oved by t he r oof membr ane manuf act ur er and sui t abl e f or t he ser vi ce and cl i mat i c condi t i ons of t he i nst al l at i on.

2. 2 FI BERGLASS FELT MATERI ALS

a. Vent i ng Base Sheet : ASTM D4897/ D4897M, Type I I , wi t hout per f or at i ons and as appr oved by t he r oof membr ane manuf act ur er .

b. Fi ber gl ass Fel t Base Sheet : ASTM D4601/ D4601M, Type I I , wi t hout and as appr oved by t he r oof membr ane manuf act ur er .

c. Pl y Fel t : ASTM D2178/ D2178M, Type I V .

2. 3 BASE FLASHI NG MEMBRANE

ASTM D6163/ D6163M. Membr ane manuf act ur er ' s st andar d, mi ni mum t wo- pl y modi f i ed bi t umen membr ane f l ashi ng syst em compat i bl e wi t h t he bui l t - up r oof membr ane and as r ecommended i n membr ane manuf act ur er ' s publ i shed l i t er at ur e. Pr ovi de a mi ni mum base pl y of f l ashi ng membr ane of 70 mi l s t hi ck. Pr ovi de a mi ni mum gr anul e sur f ace modi f i ed bi t umen f l ashi ng cap

Apr i l 2019 Page 8 SECTI ON 07 51 13 sheet of 120 mi l s t hi ck on t he sel vage edge.

2. 4 ASPHALT

ASTM D312/ D312M, Type I I I , or I V, i n accor dance wi t h membr ane manuf act ur er r equi r ement s and compat i bl e wi t h t he s l ope condi t i ons of t he i nst al l at i on.

2. 5 SURFACI NG MATERI AL

2. 5. 1 Gr anul e Sur f ace Modi f i ed Bi t umen Cap Sheet

ASTM D6164/ D6164M; Type I I , Gr ade G, mi ni mum 3 mm ( 120 mi l s) t hi ck at sel vage edge, and as r equi r ed t o pr ovi de speci f i ed f i r e saf et y r at i ng.

2. 6 PRIMER

ASTM D41/ D41M f or asphal t r oof i ng syst ems and as appr oved by t he membr ane manufacturer.

2. 7 ASPHALT ROOF CEMENT

ASTM D4586/ D4586M f or use wi t h asphal t r oof i ng syst ems, Type I I f or ver t i cal sur f aces and bui l t - up bi t umi nous f l ashi ngs; Type I f or hor i zont al sur f aces and as r ecommended by t he membr ane manuf act ur er .

2. 8 CANT STRI PS

St andar d cant st r i ps must be of per l i t e conf or mi ng t o ASTM C728 t r eat ed wi t h bi t umi nous i mpr egnat i on, s i z i ng, or waxi ng and f abr i cat ed t o pr ovi de maxi mum 45 degr ee change i n di r ect i on of membr ane. Pr ovi de mi ni mum 1- 1/ 2 i nch t hi ck cant st r i ps and pr ovi de f or mi ni mum 5 i nch f ace and 3- 1/ 2 i nch ver t i cal hei ght when i nst al l ed at 45 degr ee f ace angl e, except wher e c l ear ance r est r i ct s hei ght t o l esser di mensi on.

2. 9 UNSATURATED FELT OR ROSI N- SI ZED BUI LDI NG PAPER

Pr ovi de r osi n- si zed sheat hi ng paper wei ghi ng mi ni mum 5 pounds per 100 squar e f eet or unsat ur at ed f el t wei ghi ng appr oxi mat el y 7- 1/ 2 pounds per 100 squar e f eet .

2. 10 FASTENERS AND PLATES

Coat ed, cor r osi on r esi st ant f ast ener s compat i bl e wi t h component s bei ng at t ached and cont act sur f aces. Conf or m t o FM 4470 f or f ast ener s f or at t achment t o deck subst r at e of Cl ass I r oof deck const r uct i on and FM APP GUI DE f or t he wi nd r esi st ance speci f i ed. Use har d copper f ast ener s i n cont act wi t h copper ; al umi num or st ai nl ess st eel f ast ener s i n cont act wi t h al umi num; and st ai nl ess st eel f ast ener s i n cont act wi t h st ai nl ess st eel . For f ast eni ng onl y r oof i ng f el t s, use f ast ener s dr i ven t hr ough met al di scs, or one- pi ece composi t e f ast ener s wi t h heads not l ess t han 1 i nch i n di amet er or 1 i nch squar e wi t h r ounded or 45- degr ee t aper ed corners.

2. 10. 1 Wood Subst r at es and Nai l er s

Pr ovi de 11 gage annul ar t hr eaded shank nai l s wi t h 7/ 16 t o 5/ 8 i nch di amet er heads; or one- pi ece composi t e nai l s wi t h annul ar t hr eaded shanks not l ess t han 11 gage f or secur i ng f el t s and met al i t ems. Pr ovi de f ast ener s l ong enough t o penet r at e mi ni mum 1 i nch i nt o or mi ni mum 1/ 4 i nch

Apr i l 2019 Page 9 SECTI ON 07 51 13 t hr ough wood subst r at e mat er i al s. Do not penet r at e wood decki ng exposed t o v i ew on t he under si de.

2. 10. 2 Masonr y or Concr et e Wal l s and Ver t i cal Sur f aces

Pr ovi de har dened st eel nai l s or scr ews wi t h f l at heads, di amond shaped poi nt s, and mechani cal l y def or med shanks not l ess t han 1 i nch l ong f or secur i ng f el t s, met al i t ems, and accessor i es. Use power - dr i ven f ast ener s onl y when appr oved i n wr i t i ng by Cont r act i ng Of f i cer .

2. 10. 3 Met al Pl at es

Fl at cor r osi on- r esi st ant r ound st r ess pl at es as r ecommended by t he modi f i ed bi t umen sheet manuf act ur er ' s pr i nt ed i nst r uct i ons and meet i ng t he r equi r ement s of FM 4470; mi ni mum 2 i nch i n di amet er . For m di scs t o pr event di shi ng or cuppi ng.

2. 11 PRE- MANUFACTURED ACCESSORI ES

Pr e- manuf act ur ed accessor i es must be manuf act ur er ' s st andar d f or i nt ended pur pose, compl y wi t h appl i cabl e speci f i cat i on sect i on, compat i bl e wi t h t he membr ane r oof syst em and appr oved f or use by t he r oof membr ane manufacturer.

2. 11. 1 Pr e- f abr i cat ed Cur bs

Pr ovi de 18 gauge G90 gal vani zed cur bs wi t h mi ni mum 4 i nch f l ange f or at t achment t o r oof nai l er s. Pr ovi de mi ni mum hei ght of 10 i nch above t he f i ni shed r oof membr ane sur f ace.

2. 12 WALKPADS

Pr ovi de pol yest er r ei nf or ced r oof wal kpads, gr anul e- sur f aced modi f i ed bi t umen membr ane mat er i al , ASTM D6162/ D6162M or ASTM D6164/ D6164M, mi ni mum 200 mi l s t hi ck, compat i bl e wi t h t he r oof membr ane and as r ecommended by t he r oof membr ane manuf act ur er . Do not exceed 4 f eet i n l engt h f or each panel . Ot her wal kpad mat er i al s r equi r e appr oval of t he Cont r act i ng Of f i cer pr i or t o i nst al l at i on.

2. 13 ROOF I NSULATI ON BELOW MEMBRANE SYSTEM

I nsul at i on must be compat i bl e wi t h t he r oof membr ane, appr oved by t he membr ane manuf act ur er .

2. 14 MEMBRANE LI NER

Sel f - adher i ng modi f i ed bi t umen under l ayment conf or mi ng t o ASTM D1970/ D1970M, EPDM membr ane l i ner conf or mi ng t o ASTM D4637/ D4637M, or ot her wat er pr oof membr ane l i ner mat er i al conf or mi ng t o ASTM D4869/ D4869M, or ASTM D6757/ D6757M, and as appr oved by t he Cont r act i ng Of f i cer .

PART 3 EXECUTI ON

3. 1 VERI FI CATI ON OF CONDI TI ONS

Bef or e appl y i ng r oof i ng mat er i al s, ensur e t hat t he f ol l owi ng exi st :

a. Dr ai ns, cur bs, cant s, cont r ol j oi nt s, expansi on j oi nt s, per i met er wal l s, r oof penet r at i ng component s, and equi pment suppor t s ar e i n

Apr i l 2019 Page 10 SECTI ON 07 51 13 place.

b. Sur f aces ar e r i gi d, c l ean, dr y, smoot h, and f r ee of cr acks, hol es, and shar p changes i n el evat i on. Joi nt s i n subst r at e ar e seal ed t o pr event dr i ppage of bi t umen i nt o bui l di ng or down ext er i or wal l s. I nspect sur f aces and appr ove i mmedi at el y bef or e appl i cat i on of r oof i ng and f l ashi ngs. Appl y t he r oof i ng and f l ashi ngs t o a smoot h and f i r m sur f ace f r ee f r om i ce, f r ost , v i s i bl e moi st ur e, di r t , pr oj ect i ons, and f or ei gn mat er i al s.

c. The pl ane of t he subst r at e does not var y mor e t han 1/ 4 i nch wi t hi n an ar ea 10 by 10 f eet when checked wi t h a 10 f oot st r ai ght edge pl aced anywher e on t he subst r at e.

d. Subst r at e i s s l oped as i ndi cat ed t o pr ovi de dr ai nage.

e. Wal l s and ver t i cal sur f aces ar e const r uct ed t o r ecei ve count er f l ashi ng and wi l l per mi t mechani cal f ast eni ng of t he base f l ashi ng mat er i al s.

f . Tr eat ed wood nai l er s ar e i n pl ace on non- nai l abl e sur f aces, t o per mi t nai l i ng of base f l ashi ng at mi ni mum hei ght of 8 i nch above f i ni shed r oof i ng sur f ace.

g. Tr eat ed wood nai l er s ar e f ast ened i n pl ace at eaves, gabl e ends, openi ngs, and i nt er sect i ons wi t h ver t i cal sur f aces f or secur i ng of f el t s, edgi ng st r i ps, at t achment f l anges of sheet met al , and r oof f i x t ur es. Sur f ace- appl i ed nai l er s ar e same t hi ckness as r oof insulation.

h. Cant s ar e secur el y f ast ened i n pl ace i n t he angl es f or med by wal l s and ot her ver t i cal sur f aces. The angl e of t he cant i s appr oxi mat el y 45 degr ees and t he hei ght of t he ver t i cal l eg i s not l ess t han nomi nal 3- 1/ 2 i nch. Lay cant s i n a sol i d asphal t moppi ng or coat of asphal t cement j ust pr i or t o l ayi ng t he r oof i ng pl i es.

i . Vent i ng i s pr ovi ded i n accor dance wi t h t he f ol l owi ng:

( 1) Edge Vent i ng: Per i met er nai l er s ar e ker f ed acr oss wi dt h of t he nai l er s t o per mi t escape of gaseous pr essur e at r oof edges.

( 2) Under si de Vent i ng: Vent openi ngs ar e pr ovi ded i n st eel f or m decki ng f or cast - i n- pl ace concr et e subst r at e.

j . Exposed nai l heads i n wood subst r at es ar e pr oper l y set . War ped and spl i t boar ds and sheet s have been r epl aced. Ther e ar e no cr acks or end j oi nt s 1/ 4 i nch i n wi dt h or gr eat er . Knot hol es ar e cover ed wi t h sheet met al and nai l ed i n pl ace. Wood, Pl ywood decks ar e cover ed wi t h r osi n paper or unsat ur at ed f el t pr i or t o base sheet or r oof membr ane appl i cat i on. Joi nt s i n pl ywood subst r at es ar e t aped wi t h 2 i nch wi de maski ng t ape t o pr event ai r l eakage f r om t he under si de.

k. I nsul at i on boar ds ar e i nst al l ed smoot hl y and evenl y, and ar e not br oken, cr acked, or cur l ed. Ther e ar e no gaps i n i nsul at i on boar d j oi nt s exceedi ng 1/ 4 i nch i n wi dt h. I nsul at i on i s bei ng r oof ed over on t he same day t he i nsul at i on i s i nst al l ed.

l . Cast - i n- pl ace concr et e subst r at es have been al l owed t o cur e and t he sur f ace dr yness r equi r ement s speci f i ed under par agr aph ent i t l ed " Fi el d Qual i t y Cont r ol " have been met . No vi abl e moi st ur e pr esent when

Apr i l 2019 Page 11 SECTI ON 07 51 13 conducting ASTM D4263

m. Joi nt s bet ween pr ecast concr et e deck uni t s, i ncl udi ng wel d pl at es, ar e gr out ed, l evel ed, and cover ed wi t h 4 i nch wi de pl y f el t or ot her bi t umi nous st r i ppi ng membr ane set i n bi t umi nous cement pr i or t o appl y i ng ot her r oof i ng mat er i al s over t he ar ea. Pr i or t o appl i cat i on of pr i mer on pr ecast concr et e decks, cover j oi nt s wi t h a mi ni mum 4 i nch st r i p of f el t or bi t umi nous st r i ppi ng membr ane set i n bi t umi nous cement.

3. 2 PREPARATION

Ver i f y t hat wor k of ot her t r ades t hat penet r at es t he r oof deck or r equi r es men and equi pment t o t r aver se t he r oof deck i s compl et e.

Exami ne deck sur f aces f or i nadequat e anchor age, f or ei gn mat er i al , moi st ur e, and unevenness whi ch woul d pr event t he execut i on and qual i t y of application.

Pr oceed wi t h t he r oof i ng appl i cat i on onl y af t er def ect s have been corrected.

St ar t i ng wor k desi gnat es accept ance of t he sur f aces by t he Cont r act or .

3. 2. 1 Pr ot ect i on of Pr oper t y

3. 2. 1. 1 Pr ot ect i ve Cover i ngs

I nst al l pr ot ect i ve cover i ngs at pavi ng and bui l di ng wal l s adj acent t o hoi st s and ket t l es pr i or t o st ar t i ng t he wor k. Lap pr ot ect i ve cover i ngs not l ess t han si x i nch, secur e agai nst wi nd, and vent t o pr event col l ect i on of moi st ur e on cover ed sur f aces. Keep pr ot ect i ve cover i ngs i n pl ace f or t he dur at i on of t he r oof i ng wor k.

3. 2. 1. 2 Bi t umen St ops

Pr ovi de f el t bi t umen st ops or ot her means t o pr event bi t umen dr i ppage at r oof edges, openi ngs, and ver t i cal pr oj ect i ons bef or e hot mopped appl i cat i on of t he r oof i ng membr ane. For m f el t bi t umen st ops wi t h t wo 12 i nch wi de st r i ps of or gani c pl y f el t . Lami nat e wi t h and set st r i ps i nt o a coat i ng of asphal t r oof cement wi t h one- hal f of t he wi dt h over hangi ng t he edge of t he r oof or openi ng. Wher e nai l er s ar e pr ovi ded, nai l t he st r i ps wi t h r oof i ng nai l s spaced 12 i nch on cent er i n addi t i on t o embeddi ng i n asphal t r oof cement . Pr ot ect t he f r ee por t i on of each st r i p f r om damage t hr oughout t he r oof i ng per i od. Af t er t he pl i es of f el t ar e i n pl ace, f ol d f r ee por t i on of t he st r i ps back over t he r oof i ng membr ane and embed i n a cont i nuous coat i ng of asphal t r oof cement . Secur e wi t h r oof i ng nai l s spaced 3 i nch on cent er .

3. 2. 2 Equipment

3. 2. 2. 1 Mechani cal Appl i cat i on Devi ces

Pr ovi de and mai nt ai n mechani cal appl i cat i on devi ces wi t h pneumat i c t i r es t hat oper at e wi t hout damagi ng t he i nsul at i on, r oof i ng membr ane, or st r uct ur al component s.

Apr i l 2019 Page 12 SECTI ON 07 51 13

3. 2. 2. 2 Fl ame- Heat ed Equi pment

Do not pl ace f l ame- heat ed equi pment on r oof . Pr ovi de and mai nt ai n a f i r e ext i ngui sher adj acent t o f l ame- heat ed equi pment and on t he r oof .

3. 2. 2. 3 Open Fl ame Appl i cat i on Equi pment

Use onl y open f l ame equi pment r ecommended by t he r oof i ng mat er i al s manuf act ur er . Do not i gni t e open f l ame equi pment when l ef t unat t ended.

Pr ovi de and mai nt ai n a f i r e ext i ngui sher adj acent t o open f l ame equi pment on t he r oof .

3. 2. 3 Pr i mi ng of Sur f aces

Pr i me al l sur f aces t o be i n cont act wi t h adher ed membr ane mat er i al s.

Appl y pr i mer at t he r at e of 3 l i t er s per 0. 75 gal l on per 100 sq. f t . or as r ecommended by r oof membr ane manuf act ur er ' s pr i nt ed i nst r uct i ons t o pr omot e adhesi on of membr ane mat er i al s. Al l ow pr i mer t o dr y pr i or t o appl i cat i on of membr ane mat er i al s t o pr i med sur f ace. Avoi d f l ammabl e pr i mer mat er i al condi t i ons i n t or ch appl i ed membr ane base f l ashi ng applications.

3. 2. 3. 1 Pr i mi ng of Concr et e and Masonr y Sur f aces

Af t er sur f ace dr yness r equi r ement s have been met , coat concr et e and masonr y sur f aces whi ch ar e t o r ecei ve r oof i ng and base f l ashi ng uni f or ml y wi t h pr i mer . Al l ow pr i mer t o dr y bef or e appl i cat i on of r oof i ng and f l ashi ng mat er i al s.

3. 2. 3. 2 Pr i mi ng of Met al Sur f aces

Pr i me f l anges of met al component s t o be embedded i nt o t he r oof i ng syst em pr i or t o set t i ng i n bi t umi nous mat er i al s or st r i ppi ng i nt o r oof i ng syst em.

3. 2. 4 Cover i ng of Wood Subst r at e

Cover wood subst r at e wi t h a l ayer of unsat ur at ed f el t or r osi n- si zed bui l di ng paper l apped 2 i nch at s i des and 4 i nch at ends. Nai l t o hol d i n pl ace pr i or t o appl i cat i on of r oof i ng syst em.

3. 2. 5 Heat i ng of Asphal t

Br eak up sol i d asphal t on a sur f ace f r ee of di r t and debr i s. Heat asphal t i n ket t l e desi gned t o pr event cont act of f l ame wi t h sur f aces i n cont act wi t h t he asphal t . Pr ovi de vi s i bl e wor ki ng t her momet er and t her most at i c cont r ol s set t o t he t emper at ur e l i mi t s. Keep cont r ol s i n wor ki ng or der and cal i br at ed. Use i mmer si on t her momet er , accur at e wi t hi n a t ol er ance of pl us or mi nus 2 degr ees F, t o check t emper at ur es of t he asphal t f r equent l y. When t emper at ur es exceed maxi mum speci f i ed, r emove asphal t f r om t he si t e. Do no per mi t cut t i ng back, adul t er at i ng, or f l uxi ng of asphalt.

3. 2. 5. 1 Temper at ur e Li mi t at i ons f or Asphal t

Heat and appl y asphal t at t he t emper at ur es speci f i ed bel ow unl ess speci f i ed ot her wi se by manuf act ur er ' s pr i nt ed appl i cat i on i nst r uct i ons.

Use t her momet er t o check t emper at ur e dur i ng heat i ng and appl i cat i on. Have ket t l e at t ended const ant l y dur i ng heat i ng pr ocess t o ensur e speci f i ed t emper at ur es ar e mai nt ai ned. Do not heat asphal t above i t s f i ni shed

Apr i l 2019 Page 13 SECTI ON 07 51 13 bl owi ng t emper at ur e ( FBT) . Do not heat asphal t bet ween 500 and 525 degr ees F f or l onger t han f our consecut i ve hour s. Do not heat asphal t t o t he f l ash poi nt ( FP) . Appl y asphal t and embed membr ane sheet s when t emper at ur e of asphal t i s wi t hi n pl us or mi nus 25 degr ees F of t he equi v i scous t emper at ur e ( EVT) . Bef or e heat i ng and appl i cat i on of asphal t r ef er t o t he asphal t manuf act ur er ' s l abel or bi l l of l adi ng f or FP, FBT, and EVT of t he asphal t used.

3. 3 APPLICATION

Appl y r oof i ng mat er i al s as speci f i ed unl ess appr oved ot her wi se by t he Cont r act i ng Of f i cer . Keep r oof i ng mat er i al s dr y bef or e and dur i ng appl i cat i on. Except f or aggr egat e sur f aci ng, compl et e appl i cat i on of r oof i ng i n a cont i nuous oper at i on. Begi n and appl y onl y as much r oof i ng i n one day as can be compl et ed t hat same day. Mai nt ai n speci f i ed t emper at ur e f or asphal t . Pr ovi de t empor ar y r oof i ng and f l ashi ng as speci f i ed her ei n pr i or t o appl i cat i on of per manent r oof i ng syst em. Do not appl y aggr egat e sur f aci ng unt i l t he ot her r oof i ng appl i cat i on pr ocedur es speci f i ed her ei n ar e compl et ed.

3. 3. 1 Phased Membr ane Const r uct i on

Phased appl i cat i on of membr ane pl i es i s pr ohi bi t ed. Any del ay i n modi f i ed bi t umen cap sheet i nst al l at i on wi l l r esul t i n t hor ough cl eani ng of t he appl i ed membr ane mat er i al sur f ace and dr yi ng i mmedi at el y pr i or t o cap sheet i nst al l at i on. Pr i mi ng of t he appl i ed membr ane sur f ace may be r equi r ed at t he di scr et i on of t he Cont r act i ng Of f i cer pr i or t o cap sheet installation.

3. 3. 2 Tempor ar y Roof i ng and Fl ashi ng

Pr ovi de wat er t i ght t empor ar y r oof i ng and f l ashi ng wher e consi der abl e wor k by ot her t r ades, such as i nst al l i ng cool i ng t ower s, ant ennas, pi pes, duct s, i s t o be per f or med on t he r oof or wher e const r uct i on schedul i ng or weat her condi t i ons r equi r e pr ot ect i on of bui l di ng i nt er i or bef or e per manent r oof i ng syst em can be i nst al l ed. Do not i nst al l t empor ar y r oof i ng over per manent l y i nst al l ed i nsul at i on. Pr ovi de r i gi d pads f or t r af f i c over t empor ar y r oof i ng.

3. 3. 2. 1 Removal

Compl et el y r emove t empor ar y r oof i ng and f l ashi ng bef or e cont i nui ng wi t h appl i cat i on of per manent r oof i ng syst em.

3. 3. 3 Base Sheet Appl i cat i on - Gener al

Ful l y adher e base sheet s i n accor dance wi t h membr ane manuf act ur er ' s pr i nt ed i nst r uct i ons. Rol l and br oom i n t he base sheet t o ensur e f ul l cont r act wi t h t he hot asphal t appl i cat i on. On nai l abl e subst r at es, mechani cal l y f ast en base sheet i n conf or mance wi t h speci f i ed wi nd r esi st ance r equi r ement s and membr ane manuf act ur er ' s pr i nt ed i nst r uct i ons, and t o i ncl ude i ncr eased f ast eni ng f r equency i n cor ner and per i met er ar eas. Dr i ve f ast ener s f l ush wi t h no di shi ng or cuppi ng of f ast ener pl at e. Wher e appl i cabl e, base sheet may be mechani cal l y f ast ened i n conj unct i on wi t h i nsul at i on t o t he subst r at e, i n accor dance wi t h membr ane manuf act ur er s pr i nt ed i nst r uct i ons. Appl y sheet s i n a cont i nuous oper at i on. Appl y sheet s wi t h s i de l aps at a mi ni mum of 2 i nch unl ess gr eat er s i de l ap i s r ecommended by t he manuf act ur er ' s st andar d wr i t t en appl i cat i on i nst r uct i ons. Pr ovi de end l aps of not l ess t han 6 i nch and

Apr i l 2019 Page 14 SECTI ON 07 51 13 st agger ed a mi ni mum of 36 i nch. Appl y sheet s at r i ght angl es t o t he r oof s l ope so t hat t he di r ect i on of wat er f l ow i s over and not agai nst t he l aps par al l el t o t he r oof s l ope . Ext end base sheet s appr oxi mat el y 2 i nch above t he t op of cant st r i ps at ver t i cal sur f aces and t o t he t op of cant st r i ps el sewher e. Tr i m base sheet t o a neat f i t ar ound vent pi pes, r oof dr ai ns, and ot her pr oj ect i ons t hr ough t he r oof . Ret r of i t r oof dr ai ns must conf or m t o ANSI / SPRI RD- 1. Appl i cat i on must be f r ee of r i dges, wr i nkl es, and buckl es.

3. 3. 3. 1 Vent i l at i ng Base Sheet s

Appl y vent i l at i ng base sheet mat er i al r ecommended by t he r oof membr ane manuf act ur er . Ext end sheet s over r oof cant s, up ver t i cal sur f aces, and t er mi nat e under cap f l ashi ng; at r oof edges t er mi nat e sheet s under out si de edge of per i met er edge nai l er s or under gr avel st op.

3. 3. 4 Pl y Fel t s

Ensur e pr oper al i gnment of f el t s pr i or t o i nst al l at i on. Appl y pl y f el t s shi ngl e f ashi on per pendi cul ar t o s l ope of r oof , i ncl udi ng appl i cat i on on ar eas of t aper ed i nsul at i on t hat change sl ope di r ect i on. Appl y pl y f el t s par al l el t o s l ope of r oof so t hat pl i es of f el t ext end f r om eave l i ne on one si de of bar r el - t ype r oof and 18 i nch over cent er l i ne of t he cr own of r oof . Appl y f el t s on ot her s i de i n same manner , r esul t i ng i n t wi ce nor mal amount of r oof i ng f el t s and asphal t at cr own. Bucki ng or backwat er l aps ar e pr ohi bi t ed. Appl y f el t s i n a cont i nuous oper at i on. Pr ovi de st ar t er sheet s of f el t t o mai nt ai n t he speci f i ed number of pl i es t hr oughout t he r oof i ng. Appl y f el t s wi t h s i de l aps i n accor dance wi t h t he mat er i al manuf act ur er ' s pr i nt ed i nst r uct i ons f or t he number of pl i es t o be i nst al l ed and i n uni f or m al i gnment . Lap ends not l ess t han 6 i nch and st agger 36 i nch mi ni mum. Pl ace t he f ul l wi dt h of each pl y i n hot bi t umen i mmedi at el y behi nd t he bi t umen appl i cat or . Pl i es must be l ai d f r ee of wr i nkl es, cr eases, r i dges, or f i shmout hs. Ext end f el t s appr oxi mat el y 2 i nch above t op of cant st r i ps at ver t i cal sur f aces and t o t op of cant st r i ps el sewher e. Tr i m f el t s t o a neat f i t ar ound vent pi pes, r oof dr ai ns, and ot her pr oj ect i ons. Avoi d t r af f i c on mopped sur f aces when t he bi t umen i s f l ui d and f or a mi ni mum of one hour af t er pl y appl i cat i on.

3. 3. 4. 1 Hot - Moppi ng of Pl y Fel t s

Bond pl i es t o each ot her and t o t he base sheet s subst r at e wi t h hot asphal t . Appl y f el t s i mmedi at el y f ol l owi ng appl i cat i on of asphal t . Do not wor k ahead wi t h asphal t . At t he i nst ant f el t s come i nt o cont act wi t h asphal t , asphal t must be compl et el y f l ui d, wi t h asphal t t emper at ur es wi t hi n speci f i ed EVT r ange. Appl y asphal t uni f or ml y i n a f ul l , cont i nuous moppi ng and f i r ml y bondi ng f i l m. Appl y asphal t at t he r at e of appr oxi mat el y 25 pounds per 100 sq. f eet pl us or mi nus 25 per cent .

Requi r e appl i cat i on r at e on t he hi gh end of t he appl i cat i on r ange when moppi ng di r ect l y t o absor pt i ve i nsul at i on subst r at es of per l i t e and woodf i ber . As f el t s ar e r ol l ed i nt o t he hot asphal t , i mmedi at el y squeegee, r ol l or br oom down t o el i mi nat e t r apped ai r and t o pr ovi de t i ght , smoot h l ami nat i ons wi t hout wr i nkl es, buckl es, k i nks, or f i sh mout hs. Bi t umen must be vi s i bl e beyond al l edges of each pl y as i t i s bei ng i nst al l ed. I ndi v i dual pl y i nst al l at i on and t he compl et ed r oof membr ane syst em must be f r ee of ai r pocket s, f el t del ami nat i ons, r i dges, cr eases, f i shmout hs, dr y l aps, or bl i st er s. Do not l ay f el t s dr y or t ur n back l aps f or moppi ng bet ween pl i es.

Apr i l 2019 Page 15 SECTI ON 07 51 13

3. 3. 4. 2 Val l eys and Ri dges

Val l eys: Appl y r oof i ng at val l eys and wat er ways i n t he f ol l owi ng manner :

Cont i nue base sheet s acr oss val l eys and t er mi nat e 18 i nchf r om t he val l ey.

Cont i nue f el t pl i es acr oss val l eys and t er mi nat e 12 i nch f r om t he val l ey.

Ter mi nat e exposed l aps on a l i ne 12 i nch f r om, and par al l el t o, t he gut t er val l ey. Pr ovi de t wo pl i es of f el t , 9 and 12 i nch wi de, successi vel y mop i n over each f el t l i ne of t he t er mi nat i on.

I f t he appl i cat i on can be compl et ed wi t hout wr i nkl es, buckl es, or f i shmout hs and i f s i de l aps do not f ace t he di r ect i on of dr ai nage, r oof i ng f el t s and base sheet s may be l ai d cont i nuousl y acr oss or par al l el t o shal l ow val l eys such as t hose f or med by r ever se- sl ope r oof s. For t hi s appl i cat i on, r ei nf or ce val l eys wi t h one pl y of f el t , wi de, cent er on t he val l ey gut t er and l ay i n a sol i d moppi ng of asphal t over t he t op pl y of r oof i ng.

3. 3. 5 Membr ane Fl ashi ng

Pr ovi de t wo pl i es of modi f i ed bi t umen membr ane st r i p f l ashi ng and sheet f l ashi ng i n t he angl es f or med wher e t he r oof deck abut s wal l s, cur bs, vent i l at or s, pi pes, and ot her ver t i cal sur f aces, and wher e necessar y t o make t he wor k wat er t i ght . Top pl y of f l ashi ng must be gr anul e- sur f aced modi f i ed bi t umen membr ane. I nst al l f l ashi ng af t er pl i es of r oof membr ane f el t have been appl i ed but bef or e aggr egat e sur f aci ng i s appl i ed. Cut at a 45 degr ee angl e acr oss t er mi nat i ng end l ap ar ea of cap membr ane pr i or t o appl y i ng adj acent over l appi ng cap membr ane. Pr ess f l ashi ng i nt o pl ace t o ensur e f ul l adhesi on and avoi d br i dgi ng. Ensur e f ul l l ap seal i n al l l ap ar eas. Mechani cal l y f ast en t op edge of base f l ashi ng 6 i nch on cent er t hr ough mi ni mum 1 i nch di amet er t i n caps wi t h f ast ener s of suf f i c i ent l engt h t o embed mi ni mum 1 i nch i nt o at t achment subst r at e. Appl y mat chi ng gr anul es i n any ar eas of asphal t bl eed out whi l e t he asphal t i s st i l l hot .

Appl y membr ane l i ner over t op of exposed nai l er s and bl ocki ng and t o over l ap t op edge of base f l ashi ng i nst al l at i on at cur bs, par apet wal l s, expansi on j oi nt s and as ot her wi se i ndi cat ed t o ser ve as wat er pr oof l i ni ng under sheet met al f l ashi ng component s.

3. 3. 5. 1 St r i p Fl ashi ng

Set pr i med f l anges of sheet met al f l ashi ngs t o be i ncor por at ed i nt o r oof i ng syst em i n a uni f or m coat i ng of asphal t r oof cement not l ess t han 1/ 16 i nch t hi ck appl i ed over t he pl y f el t s. St r i p- i n wi t h one l ayer of smoot h sur f ace modi f i ed bi t umen membr ane and cap wi t h gr anul e- sur f aced modi f i ed bi t umen membr ane. Set st r i p f l ashi ng i n hot asphal t or cement t o t he t ops of t he f l anges, r oof i ng membr ane, and t o each ot her . Use coat i ngs of asphal t r oof cement not l ess t han 1/ 16 i nch t hi ck f or pl y f el t . Use hot asphal t or modi f i ed bi t umen cement f or modi f i ed bi t umen sheet s. Ext end f i r st st r i ppi ng pl y not l ess t han 4 i nch beyond out er edge of f l ange ont o r oof membr ane. Ext end each addi t i onal pl y 4 i nch beyond t he edge of t he pr evi ous pl y.

3. 3. 5. 2 Membr ane Fl ashi ng at Roof Dr ai n

Ext end r oof i ng pl i es t o edge of dr ai n bowl openi ng at r oof dr ai n deck f l ange. Neat l y f i t and pr ess pr i med r oof dr ai n f l ashi ng i nt o heavy coat of asphal t r oof cement appl i ed t o t op of r oof i ng pl i es. St r i p i n and compl et el y cover f l ashi ng wi t h t wo l ayer s of modi f i ed bi t umen sheet , Apr i l 2019 Page 16 SECTI ON 07 51 13 ext endi ng t he f i r st sheet 6 i nch on t he r oof i ng beyond t he edge of f l ashi ng. Ext end t he cap sheet 6 i nch beyond t he pr evi ous f l ashi ng pl y.

Bond t he t wo l ayer s t o t he met al f l ashi ng and t o each ot her wi t h hot asphal t . Secur el y c l amp membr ane, met al f l ashi ng, and st r i p f l ashi ng i n t he f l ashi ng cl ampi ng r i ng. Secur e c l amps so t hat st r i p f l ashi ng and met al f l ashi ng ar e f r ee f r om wr i nkl es and f ol ds. Tr i m membr ane, f l ashi ng, and st r i ppi ng f l ush wi t h i nsi de of c l ampi ng r i ng.

3. 3. 5. 3 Pr e- f abr i cat ed Cur bs

Anchor pr ef abr i cat ed cur bs secur el y t o nai l er or ot her base subst r at e as i ndi cat ed and f l ash wi t h modi f i ed bi t umen f l ashi ng membr ane.

3. 3. 5. 4 Set - On Accessor i es

Wher e pi pe or condui t bl ocki ng, suppor t s and si mi l ar r oof accessor i es ar e set on t he membr ane, adher e wal kpad mat er i al t o bot t om of accessor i es pr i or t o set t i ng on r oof i ng membr ane. Speci f i c met hod of i nst al l i ng set - on accessor i es must per mi t nor mal movement due t o expansi on, cont r act i on, v i br at i on, and si mi l ar occur r ences wi t hout damagi ng r oof i ng membr ane. Do not mechani cal l y secur e set - on accessor i es t hr ough r oof i ng membr ane i nt o r oof deck subst r at e.

3. 3. 5. 5 Li ght ni ng Pr ot ect i on

Fl ash or at t ach l i ght ni ng pr ot ect i on syst em component s t o t he r oof membr ane i n a manner accept abl e t o t he r oof membr ane manuf act ur er .

3. 3. 6 Roof Wal kpads

I nst al l wal kpads at r oof access poi nt s and wher e ot her wi se i ndi cat ed f or t r af f i c ar eas and f or access t o mechani cal equi pment , i n accor dance wi t h t he modi f i ed bi t umen sheet r oof i ng manuf act ur er ' s pr i nt ed i nst r uct i ons.

Pr ovi de mi ni mum 6 i nch separ at i on bet ween adj acent wal kpads t o accommodat e dr ai nage. Pr ovi de wal kpad or an addi t i onal l ayer of cap sheet under pr ecast concr et e paver bl ocks t o pr ot ect t he r oof i ng.

3. 3. 7 Gr anul e- Sur f aced Modi f i ed Bi t umen Cap Sheet

I nspect under l y i ng appl i ed membr ane and r epai r f r ee of damage, hol es, punct ur e, gouges, abr asi ons, and any ot her def ect s, and f r ee of moi st ur e, l oose mat er i al s, debr i s, sedi ment s, dust , and any ot her condi t i ons r equi r ed by t he membr ane manuf act ur er pr i or t o cap sheet i nst al l at i on.

Pr ovi de cl eani ng and ar t i f i c i al dr y i ng wi t h heat ed bl ower s or t or ches t o ensur e c l ean, dr y sur f ace pr i or t o cap sheet appl i cat i on.