07 52 00.pdf

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

SECTI ON 07 52 00

MODI FI ED BI TUMI NOUS MEMBRANE 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

AMERI CAN SOCI ETY OF HEATI NG, REFRI GERATI NG AND AI R- CONDI TI ONI NG

ENGI NEERS ( ASHRAE)

ASHRAE 90. 1 - I P ( 2010) Ener gy St andar d f or Bui l di ngs Except Low- Ri se Resi dent i al Bui l di ngs

ASHRAE 90. 1 - SI ( 2010) Ener gy St andar d f or Bui l di ngs Except Low- Ri se Resi dent i al Bui l di ngs

AMERI CAN SOCI ETY OF SAFETY ENGI NEERS ( ASSE/ SAFE)

ASSE/ SAFE A10. 24 ( 2014) Roof i ng - Saf et y Requi r ement s of Low- Sl oped Roof s

ASPHALT ROOFI NG MANUFACTURER' S ASSOCI ATI ON ( ARMA)

ARMA 410BUR88 ( 2001) Manual of Roof Mai nt enance and Repair

ARMA PMBRG98 ( 1998) Qual i t y Cont r ol Gui del i ne f or t he Appl i cat i on of Pol ymer Modi f i ed Bi t umen Roofing

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 C1289 ( 2016) St andar d Speci f i cat i on f or Faced Ri gi d Cel l ul ar Pol y i socyanur at e Ther mal I nsul at i on Boar d

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

ASTM C552 ( 2016) St andar d Speci f i cat i on f or Cel l ul ar Gl ass Ther mal I nsul at i on

ASTM C578 ( 2015b) St andar d Speci f i cat i on f or Ri gi d, Apr i l 2019 Page 1 SECTI ON 07 52 00

Cel l ul ar Pol yst yr ene Ther mal I nsul at i on

ASTM C726 ( 2012) Mi ner al Fi ber Roof I nsul at i on Boar d

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

ASTM D1668/ D1668M ( 1997a; R 2014; E 2014) Gl ass Fabr i cs ( Woven and Tr eat ed) f or Roof i ng and Waterproofing

ASTM D1863/ D1863M ( 2005; R 2011; E 2012) 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 D2824/ D2824M ( 2013) Al umi num- Pi gment ed Asphal t Roof Coat i ngs, Non- Fi ber ed, Asbest os Fi ber ed, and Fi ber ed wi t hout Asbest os

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

ASTM D4073 ( 2006; R 2013) St andar d Test Met hod f or Tensi l e- Tear St r engt h of Bi t umi nous Roof i ng 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 at El evat ed Temper at ur es Usi ng a Rot at i onal Vi scomet er

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 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 D5147/ D5147M ( 2014) St andar d Test Met hods f or Sampl i ng and Test i ng Modi f i ed Bi t umi nous Sheet Material

ASTM D6162/ D6162M ( 2000a; R 2015; E 2015) St andar d

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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 D6222/ D6222M ( 2011) At act i c Pol ypr opyl ene ( ARP) 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 D6223/ D6223M ( 2002; E 2009; R 2009) St andar d Speci f i cat i on f or At act i c Pol ypr opyl ene ( ARP) 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 D6298 ( 2013) Fi ber gl ass Rei nf or ced St yr ene- But adi ene- St yr ene ( SBS) Modi f i ed Bi t umi nous Sheet wi t h Fact or y Appl i ed Met al Sur f ace

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/

I NTERNATI ONAL CODE COUNCI L ( I CC)

I CC I BC ( 2015) I nt er nat i onal Bui l di ng Code

I NTERNATI ONAL SAFETY EQUI PMENT ASSOCI ATI ON ( I SEA)

ANSI / I SEA Z87. 1 ( 2015) Occupat i onal and Educat i onal Per sonal Eye and Face Pr ot ect i on Devi ces

MI DWEST ROOFI NG CONTRACTORS ASSOCI ATI ON ( MRCA)

CERTA ( 2003) NRCA/ MRCA Cer t i f i ed Roof i ng Tor ch Appl i cat or Pr ogr am

NATI ONAL FI RE PROTECTI ON ASSOCI ATI ON ( NFPA)

NFPA 241 ( 2013; Er r at a 2015) St andar d f or

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Saf eguar di ng Const r uct i on, Al t er at i on, and Demol i t i on Oper at i ons

NFPA 58 ( 2014; TI A 13- 1; TI A 13- 2; Er r at a 13- 1;

TI A 13- 3; Er r at a 14- 2) Li quef i ed Pet r ol eum Gas Code

NATI ONAL ROOFI NG CONTRACTORS ASSOCI ATI ON ( NRCA)

NRCA C3701 ( 2002) Repai r Manual f or Low Sl ope Membr ane Roof Syst ems

NRCA Det ai l s ( 2003) NRCA Roof Per i met er Fl ashi ng Syst ems Const r uct i on Det ai l s f or Cl ass 1 Roof Const r uct i on

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

SHEET METAL AND AI R CONDI TI ONI NG CONTRACTORS' NATI ONAL ASSOCI ATI ON

(SMACNA)

SMACNA 1793 ( 2012) Ar chi t ect ur al Sheet Met al Manual , 7t h Edi t i on

SI NGLE PLY ROOFI NG I NDUSTRY ( SPRI )

ANSI / SPRI / FM 4435/ ES- 1 ( 2011) Wi nd Desi gn St andar d f or Edge Syst ems Used wi t h Low Sl ope Roof i ng Syst ems

U. S. NATI ONAL ARCHI VES AND RECORDS ADMI NI STRATI ON ( NARA)

29 CFR 1910 Occupat i onal Saf et y and Heal t h St andar ds

29 CFR 1910. 12 Const r uct i on Wor k

29 CFR 1926 Saf et y and Heal t h Regul at i ons f or Construction

29 CFR 1926. 16 Rul es of Const r uct i on

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 SYSTEMS

Mi ni mum t hr ee- pl y f i ber gl ass f el t and one pl y cap sheet . Modi f i ed bi t umen r oof membr ane must be set i n hot asphal t .

Al l wor k must f ol l ow t he NRCA Roof Man gui del i nes and st andar ds st at ed wi t hi n t hi s Sect i on.

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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- 02 Shop Dr awi ngs

Roof pl an; G dr awi ng depi ct i ng wi nd l oads and boundar i es of enhanced per i met er and cor ner at t achment s of r oof syst em component s, as appl i cabl e

SD- 03 Pr oduct Dat a

Modi f i ed Bi t umen Sheet s; G

Asphalt

Fi ber gl ass Fel t ; G

Primer

Modi f i ed Bi t umen Roof Cement

Pr e- Manuf act ur ed Accessor i es

Fast ener s And Pl at es; G

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

Submi t al l dat a r equi r ed by Sect i on 07 22 00 ROOF AND DECK I NSULATI ON, t oget her 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. Pr oduct s must be as l i s t ed 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- 05 Desi gn Dat a

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

Pr ovi de Engi neer i ng cal cul at i ons, s i gned, seal ed, and dat ed by a qual i f i ed Engi neer val i dat i ng t he wi nd r esi st ance per ASCE 7, ASTM D4073, and ANSI / SPRI / FM 4435/ ES- 1 of non- r at ed r oof syst em.

SD- 07 Cer t i f i cat es

Pr ovi de evi dence t hat pr oduct s used wi t hi n t hi s speci f i cat i on ar e manuf act ur ed i n t he Uni t ed St at es.

Qual i f i cat i on of Manuf act ur er

Cer t i f y t hat t he manuf act ur er of t he modi f i ed bi t umen membr ane meet s r equi r ement s speci f i ed under par agr aph ent i t l ed " Qual i f i cat i on of Manuf act ur er . "

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Qual i f i cat i on of Appl i cat or

Cer t i f y t hat t he appl i cat or meet s r equi r ement s speci f i ed under par agr aph ent i t l ed " Qual i f i cat i on of Appl i cat or . "

Qual i f i cat i on of Engi neer of Recor d

Cer t i f y t hat t he Engi neer of Recor d i s f ul l y qual i f i ed, compet ent , and cur r ent l y l i censed t o pr act i ce i n t he pr oj ect j ur i sdi ct i on.

Bi l l of Ladi ng

Submi t bi l l of l adi ng when l abel s of asphal t cont ai ner s do not bear t he f l ash poi nt ( FP) , f i ni shed bl owi ng t emper at ur e ( FBT) , and equi v i scous t emper at ur e ( EVT) .

Wi nd Upl i f t Resi st ance; G cl assi f i cat i on, as appl i cabl e

Fi r e Resi st ance cl assi f i cat i on; G

Submi t t he r oof syst em assembl y 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.

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

Modi f i ed Bi t umen Membr ane Appl i cat i on; G

Fl ashi ng; G

Temper at ur e Li mi t at i ons f or Asphal t

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.

Primer

Fasteners

Vent i l at i ng Base Sheet s

Col d Weat her 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.

I ncl ude membr ane manuf act ur er r equi r ement s f or nai l er s and backnai l i ng of r oof membr ane on st eep sl opes. 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

Warranty

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I nf or mat i on Car d

I nst r uct i ons To Gover nment Per sonnel

I ncl ude copi es of Mat er i al Saf et y Dat a Sheet s f or mai nt enance/ r epai r mat er i al s.

Submi t 20 year " No- Dol l ar - Li mi t " war r ant y f or l abor and mat er i al s.

1. 4 QUALI TY ASSURANCE

1. 4. 1 Qual i f i cat i on of Manuf act ur er

Modi f i ed bi t umen sheet r oof i ng syst em manuf act ur er must have a mi ni mum of 5 year s exper i ence i n manuf act ur i ng modi f i ed bi t umen r oof i ng pr oduct s.

1. 4. 2 Qual i f i cat i on of Appl i cat or

Roof 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 modi f i ed bi t umen sheet r oof i ng syst em manuf act ur er and have a mi ni mum of f i ve 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 hat 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. The appl i cat or must suppl y t he names, l ocat i ons and cl i ent cont act i nf or mat i on of f i ve pr oj ect s of s i mi l ar s i ze and scope t hat t he appl i cat or has const r uct ed usi ng t he manuf act ur er ' s r oof i ng pr oduct s submi t t ed f or t hi s pr oj ect wi t hi n t he pr evi ous t hr ee years.

1. 4. 3 Qual i f i cat i ons of Phot ovol t ai cs ( PV) Roof t op Appl i cat or

The PV r oof t op appl i cat or must be appr oved, aut hor i zed, or cer t i f i ed by a Roof I nt egr at ed Sol ar Ener gy ( RI SE) Cer t i f i ed Sol ar Roof i ng Pr of essi onal ( CSRP) , and compl y wi t h appl i cabl e codes, st andar ds, and r egul at or y r equi r ement s t o mai nt ai n t he weat her pr oof i ng abi l i t i es of bot h t he i nt egr at ed r oof syst em and phot ovol t ai c syst em.

1. 4. 4 Qual i f i cat i on of Engi neer of Recor d

Engi neer of Recor d must be cur r ent l y l i censed wi t hi n t he j ur i sdi ct i on of t he pr oj ect .

1. 4. 5 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.

FM or UL appr oved component s of t he r oof cover i ng assembl y must bear t he appr opr i at e FM or UL l abel .

1. 4. 6 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

Apr i l 2019 Page 7 SECTI ON 07 52 00 pr ocedur es. Non- r at ed syst ems must not be i nst al l ed, 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 7and/ or ot her appl i cabl e bui l di ng code r equi r ement s.

1. 4. 7 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 and i nsul at i on 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 following:

a. Dr awi ngs, i ncl udi ng Roof Pl an, speci f i cat i ons and submi t t al s r el at ed t o t he r oof wor k

Fi el d i nspect i on and ver i f i cat i on of al l exi st i ng condi t i ons, i ncl udi ng al l f i r e saf et y i ssues, exi st i ng st r uct ur e, and exi st i ng mat er i al s, i ncl udi ng conceal ed combust i bl es, whi ch may r equi r e addi t i onal pr ot ect i on dur i ng i nst al l at i on.

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 st r uct ur e, and 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

e. Qual i t y cont r ol , ( ARMA PMBRG98) 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 .

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, desi gnat ed saf et y per sonnel t r ai ned t o enf or ce and compl y wi t h ASSE/ SAFE A10. 24, 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 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 t he 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, t he cont ai ner must bear t he speci f i cat i on number , t ype, and cl ass, as appl i cabl e. Label s or bi l l of l adi ng f or r oof i ng asphal t must i ndi cat e asphal t t ype, FP, FBT, and 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

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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 and 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 or pal l et s one l evel hi gh i n dr y l ocat i ons wi t h adequat e vent i l at i on, such as an encl osed bui l di ng or c l osed t r ai l er . 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 i s f i ni shed and dr y. Mai nt ai n r ol l mat er i al s at t emper at ur es above 50 degr ees F f or 24 hour s i mmedi at el y bef or e appl i cat i on. 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 . Pr ovi de suf f i c i ent vent i l at i on t o pr event condensat i on. Do not st or e mor e mat er i al s on r oof t han can be i nst al l ed t he same day and r emove unused mat er i al s at end of each days wor k. Di st r i but e mat er i al s t empor ar i l y st or ed on r oof t o st ay wi t hi n l i ve l oad l i mi t s of t he r oof const r uct i on.

Mai nt ai n a mi ni mum di st ance of 35 f oot f or al l s t or ed f l ammabl e mat er i al s, i ncl udi ng mat er i al s cover ed wi t h shr i nk wr aps, cr af t paper and/ or t ar ps f r om al l t or ch/ wel di ng appl i cat i ons.

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 t o pr event damage t o mat er i al s or appl i ed r oof i ng.

1. 6 ENVI RONMENTAL REQUI REMENTS

Do not i nst al l r oof i ng syst em when ai r t emper at ur e i s bel ow 40 degr ees F, dur i ng any f or m of pr eci pi t at i on, i ncl udi ng f og, or when t her e i s i ce, f r ost , moi st ur e, or any ot her v i s i bl e dampness on t he r oof deck. Fol l ow manuf act ur er ' s pr i nt ed i nst r uct i ons f or Col d Weat her I nst al l at i on.

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, per NRCA Det ai l s, and 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 r oof membr ane i nst al l at i on t he same day.

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

Apr i l 2019 Page 9 SECTI ON 07 52 00 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 as r equi r ed 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 years.

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 i n compl i ance wi t h ASTM C1289, and accessor i es necessar y f or a wat er t i ght r oof syst em const r uct i on. Pr ovi de war r ant y di r ect l y t o t he Gover nment and commence war r ant y ef f ect i ve dat e at t i me of Gover nment ' s accept ance of t he r oof wor k. The war r ant y must st at e t hat :

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. 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 not i f i cat i on, emer gency t empor ar y r epai r s per f or med by ot her s does not voi d t he war r ant y.

c. Upon compl et i on of i nst al l at i on, and accept ance by t he Cont r act i ng Of f i cer , Const r uct i on Manager and Roof i ng Syst em Engi neer of Recor d, t he manuf act ur er must suppl y t he appr opr i at e war r ant y t o t he Owner .

d. I nst al l er must submi t a mi ni mum t wo year war r ant y t o t he membr ane manuf act ur er f r om t he dat e of accept ance, wi t h a copy t o t he Cont r act i ng Of f i cer , Const r uct i on Manager and Roof i ng Syst em Engi neer of Recor d.

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 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 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

Repai r or r epl acement wor k, ARMA 410BUR88, NRCA C3701 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 per i od.

Apr i l 2019 Page 10 SECTI ON 07 52 00

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 ( ANSI / SPRI / FM 4435/ ES- 1) 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 i ng and Wat er pr oof i ng Manual , 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 COOL ROOFS

Meet t he ASHRAE 90. 1 - I P Chapt er 5 val ues f or cool r oof i ng. I f a cool r oof i s not sel ect ed i n zones 1- 3, meet one of t he except i on r equi r ement s l i s t ed i n ASHRAE 90. 1 - I P 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 .

1. 11 SUSTAI NABI LI TY REPORTI NG

Coor di nat e wi t h Sect i on 01 33 29 LEED( t m) DOCUMENTATI ON.

1. 11. 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/

1. 11. 2 Local / Regi onal Mat er i al s

Cont r act or shal l sel ect mat er i al s so t hat a mi ni mum of 10 per cent ( by dol l ar val ue) of mat er i al s and pr oduct s f or t he pr oj ect ar e ext r act ed, har vest ed, or r ecover ed, as wel l as manuf act ur ed, r egi onal l y wi t hi n a 500 mi l e r adi us of t he pr oj ect s i t e. PART 2 PRODUCTS

2. 1 MODI FI ED BI TUMEN SHEETS AND FI BERGLASS FELT MATERI ALS

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 modi f i ed bi t umen 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 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. Modi f i ed bi t umen sheet s must be wat er t i ght and vi sual l y f r ee of pi nhol es, par t i c l es of f or ei gn mat t er , non- di sper sed r aw mat er i al , f act or y spl i ces, or ot her condi t i ons t hat mi ght af f ect ser vi ceabi l i t y . Pol ymer modi f i er must compl y wi t h ARMA PMBRG98 and be uni f or ml y di sper sed t hr oughout t he sheet . Edges of sheet must be st r ai ght and f l at .

b. Fi ber gl ass Fel t Base Sheet : ASTM D4601/ D4601M, ASTM D1668/ D1668M Type I I , wi t hout per f or at i ons and as appr oved by t he modi f i ed bi t umen r oof membr ane manuf act ur er .

e. SBS Cap Sheet : ASTM D6162/ D6162M ASTM D6164/ D6164M ; Type I I , Gr ade G, mi ni mum 145 mi l s t hi ck, and as r equi r ed t o

Apr i l 2019 Page 11 SECTI ON 07 52 00 pr ovi de speci f i ed f i r e saf et y r at i ng.

2. 2 BASE FLASHI NG MEMBRANE

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 r oof membr ane speci f i ed and as r ecommended i n membr ane manuf act ur er ' s publ i shed l i t er at ur e. Fl ashi ng membr anes must meet or exceed t he pr oper t i es of t he mat er i al st andar ds speci f i ed f or t he modi f i ed bi t umen base and cap sheet , except t hat f l ashi ng membr ane t hi ckness must be as r ecommended by t he membr ane manufacturer..

2. 3 ASPHALT

ASTM D312/ D312M, Type I I I or I V, i n accor dance wi t h modi f i ed bi t umen 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. 4 PRIMER

ASTM D41/ D41M, or ot her pr i mer compat i bl e wi t h t he appl i cat i on and as appr oved i n wr i t i ng by t he modi f i ed bi t umen membr ane manuf act ur er .

2. 5 MODI FI ED BI TUMEN ROOF CEMENT

ASTM D4586/ D4586M, Type I I f or ver t i cal sur f aces, Type I f or hor i zont al sur f aces, compat i bl e wi t h t he modi f i ed bi t umen r oof membr ane and as r ecommended by t he modi f i ed bi t umen membr ane manuf act ur er .

2. 6 CANT AND TAPERED EDGE STRI PS

Pr ovi de st andar d cant s and t aper ed edge st r i ps of t he same mat er i al as t he r oof i nsul at i on 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. Cant st r i ps must be mi ni mum 4 i nch ver t i cal hei ght wi t h 45 degr ee cant angl e, except wher e c l ear ance r est r i ct s hei ght t o l esser di mensi on. Taper edge st r i ps at a r at e of one t o 1- 1/ 2 i nch per f oot t o a mi ni mum of 1/ 8 i nch of t hi ckness. Pr ovi de ki l n- dr i ed pr eser vat i ve- t r eat ed wood cant s, i n compl i ance wi t h r equi r ement s of Sect i on 06 10 00 ROUGH CARPENTRY at base of wood nai l er s set on edge and wood cur bi ng and wher e ot her wi se i ndi cat ed.

2. 7 FASTENERS AND PLATES

Pr ovi de coat ed, cor r osi on- r esi st ant f ast ener s 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 and FM APP GUI DE f or Cl ass I r oof deck const r uct i on and t he wi nd upl i f t r esi st ance speci f i ed. For f ast eni ng of membr ane or f el t s t o wood mat er i al s, pr ovi de f ast ener s dr i ven t hr ough 1 i nch di amet er 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 cor ner s.

2. 7. 1 Masonr y or Concr et e Wal l s and Ver t i cal Sur f aces

Use 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

Apr i l 2019 Page 12 SECTI ON 07 52 00 f el t s, modi f i ed bi t umen sheet s, met al i t ems, and accessor i es t o masonr y or concr et e wal l s and ver t i cal sur f aces. Use power - dr i ven f ast ener sonl y when appr oved i n wr i t i ng by t he Cont r act i ng Of f i cer .

2. 7. 2 Met al Pl at es

Pr ovi de f l 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; not l ess t han 2 i nch i n di amet er . For m di scs t o pr event di shi ng or cuppi ng.

2. 8 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, compat i bl e wi t h t he membr ane r oof syst em and appr oved f or use by t he modi f i ed bi t umen membr ane manuf act ur er .

2. 8. 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. Cur bs must be mi ni mum hei ght of 10 i nch above t he f i ni shed r oof membr ane sur f ace.

2. 9 WALKPADS

Roof wal kpads must be pol yest er r ei nf or ced, gr anul e- sur f aced modi f i ed bi t umen membr ane mat er i al , mi ni mum 197 mi l s t hi ck, compat i bl e wi t h t he modi f i ed bi t umen sheet r oof i ng and as r ecommended by t he modi f i ed bi t umen sheet r oof i ng manuf act ur er . Panel s must not exceed 4 f oot i n l engt h. 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. 10 ROOF I NSULATI ON BELOW MODI FI ED BI TUMEN 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 and meet i ng al l t he r equi r ement s speci f i ed i n Sect i on 07 22 00 ROOF AND DECK I NSULATI ON.

PART 3 EXECUTI ON

3. 1 EXAMINATION

Ensur e t hat t he f ol l owi ng condi t i ons exi st pr i or t o appl i cat i on of t he r oof i ng mat er i al s:

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 place.

b. Sur f aces ar e r i gi d, c l ean, dr y, smoot h, and f r ee f r om cr acks, hol es, and shar p changes i n el evat i on. Joi nt s i n t he subst r at e ar e seal ed t o pr event dr i ppi ng of bi t umen i nt o bui l di ng or down ext er i or wal l s.

c. The pl ane of t he subst r at e does not var y mor e t han 1/ 4 i nchwi t hi n an ar ea 10 by 10 f oot when checked wi t h a10 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 posi t i ve dr ai nage.

Apr i l 2019 Page 13 SECTI ON 07 52 00

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 materials.

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. Pr ot ect al l combust i bl e mat er i al s and sur f aces whi ch may cont ai n conceal ed combust i bl e or f l ammabl e mat er i al s. Al l f i r e ext i ngui shi ng equi pment has been pl aced as speci f i ed.

h. Ver i f y al l Fi r e Wat ch per sonnel assi gnment s.

i . 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 membr ane, 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 t he same t hi ckness as t he r oof insulation.

j . 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 45 degr ees and t he hei ght of t he ver t i cal l eg i s not l ess t han 3- 1/ 2 i nch.

l . 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 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 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 or ot her wi se seal ed t o pr event ai r l eakage f r om t he under si de.

m. 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.

n. Cast - i n- pl ace 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 .

o. Joi nt s bet ween pr ecast concr et e deck uni t s ar e gr out ed, l evel ed, and st r i pped i n wi t h f el t or 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 area.

p. Roof deck and f r ami ng ar e s l oped as i ndi cat ed t o pr ovi de posi t i ve drainage.

3. 2 PREPARATION

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 6 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

Apr i l 2019 Page 14 SECTI ON 07 52 00 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.

3. 2. 2 Equipment

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

Mount mechani cal appl i cat i on devi ces on pneumat i c- t i r ed wheel s. Use devi ces desi gned and mai nt ai ned t o 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.

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 El ect r i c- Heat ed Equi pment

Pr ovi de adequat e el ect r i cal ser vi ce as r equi r ed by manuf act ur er of el ect r i cal equi pment t o ensur e agai nst damage t o equi pment and pr oper t y and t o ensur e pr oper appl i cat i on of r oof i ng mat er i al s.

3. 2. 3 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 . Ket t l es must have 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 speci f i ed her ei n.

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 1. 8 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 mums 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 asphal t .

3. 2. 3. 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 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) but not l ess t han 400 degr ees F. 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. 2. 4 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 0. 75 gal l on per 100 sq. f t . or as r ecommended by modi f i ed bi t umen sheet manuf act ur er ' s pr i nt ed i nst r uct i ons t o pr omot e

Apr i l 2019 Page 15 SECTI ON 07 52 00 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 appl i cat i ons.

3. 2. 4. 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 membr ane mat er i al s uni f or ml y wi t h primer.

3. 2. 4. 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 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. 5 Membr ane Pr epar at i on

Unr ol l modi f i ed bi t umen membr ane mat er i al s and al l ow t o r el ax a mi ni mum of 30 mi nut es pr i or t o i nst al l at i on. I n col d weat her , adher e t o membr ane manuf act ur er ' s addi t i onal r ecommendat i ons f or pr e- i nst al l at i on membr ane handl i ng and pr epar at i on. I nspect f or damage, pi nhol es, par t i c l es of f or ei gn mat t er , non- di sper sed r aw mat er i al , f act or y spl i ces, or ot her condi t i ons t hat mi ght af f ect ser vi ceabi l i t y . Edges of seams must be st r ai ght and f l at so t hat t hey may be seamed t o one anot her wi t hout f or mi ng f i sh mout hs or wr i nkl es. Di scar d damaged or def ect i ve mat er i al s.

3. 2. 6 Subst r at e Pr epar at i on

Appl y membr ane t o c l ean, dr y sur f aces onl y. Do not appl y membr ane t o sur f aces t hat have been wet by r ai n or f r ozen pr eci pi t at i on wi t hi n t he pr evi ous 12 hour s. 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 as necessar y t o ensur e c l ean, dr y sur f ace pr i or t o membr ane appl i cat i on.

3. 3 APPLICATION

Appl y r oof i ng mat er i al s as speci f i ed her ei n 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. 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 es 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.

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 unl ess ot her wi se appr oved by t he Cont r act i ng Of f i cer and suppor t ed by t he membr ane manuf act ur er ' s wr i t t en appl i cat i on i nst r uct i ons. I f cap sheet i nst al l at i on i s del ayed, t hor oughl y c l ean t he appl i ed membr ane mat er i al sur f ace and dr y 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 i nst al l at i on.

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

Apr i l 2019 Page 16 SECTI ON 07 52 00 weat her condi t i ons r equi r e pr ot ect i on of t he bui l di ng' s 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 t he per manent r oof i ng syst em.

3. 3. 3 Appl i cat i on Met hod

3. 3. 3. 1 Hot Asphal t Appl i cat i on of Modi f i ed Bi t umen Membr ane

Appl y membr ane i mmedi at el y f ol l owi ng appl i cat i on of hot asphal t . Appl y hot asphal t wi t hi n 6 f oot of r ol l . Do not wor k ahead wi t h asphal t .

Asphal t must be compl et el y f l ui d, wi t h mop t emper at ur es wi t hi n t he asphal t ' s EVT r ange, but not l ess t han 400 degr ees F, at t he i nst ant membr ane comes i nt o cont act wi t h asphal t . Appl i cat i on of bi t umen bet ween l ayer s must be such as t o pr ovi de f ul l , cont i nuous, uni f or m cover age and compl et e cont act of hot asphal t wi t h t he sheet above and bel ow. Embed sheet s i n asphal t . As sheet s ar e bei ng r ol l ed i nt o hot asphal t , i mmedi at el y and t hor oughl y appl y uni f or m posi t i ve pr essur e by squeegee, r ol l , or br oom t o ensur e f ul l adhesi on and l ap seal , 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. Avoi d excessi ve ext r usi on of asphal t at l ap ar eas. Cont r ol asphal t bl eed out t o appr oxi mat el y 1 i nch maximum.

3. 3. 4 Vent i l at i ng Base Sheet s

Appl y vent i l at i ng base sheet s wi t h 3 i nch si de l aps and 6 i nch end l aps i n accor dance wi t h manuf act ur er ' s pr i nt ed appl i cat i on i nst r uct i ons f or subst r at e and wi nd upl i f t condi t i ons speci f i ed. Mechani cal at t achment s must be as r equi r ed f or wi nd r esi st ance speci f i ed and t o i ncl ude i ncr eased f r equency of at t achment at 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. Top mop per f or at ed sheet wi t h a f ul l , cont i nuous moppi ng of hot asphal t .

3. 3. 5 Fi ber gl ass Fel t Base Sheet

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 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, mechani cal l y f ast en base sheet 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 st agger ed a mi ni mum of 36 i nch. Appl y sheet s 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 . Appl i cat i on must be f r ee of r i dges, wr i nkl es, and buckles.

Apr i l 2019 Page 17 SECTI ON 07 52 00

3. 3. 6 Modi f i ed Bi t umen Membr ane Appl i cat i on

Ensur e pr oper sheet al i gnment pr i or t o i nst al l at i on. Appl y membr ane l ayer s par al l el t o s l ope of r oof . Bucki ng or backwat er l aps ar e pr ohi bi t ed. Ful l y adher e membr ane sheet s t o under l y i ng subst r at e mat er i al s. Pr ovi de mi ni mum 3 i nch si de l aps and mi ni mum 6 i nch end l aps and as ot her wi se r equi r ed by membr ane manuf act ur er . St agger end l aps mi ni mum 36 i nch. Of f set s i de l aps bet ween membr ane l ayer s a mi ni mum of 12 i nch. Of f set end l aps bet ween membr ane l ayer s a mi ni mum of 36 i nch.

I nst al l al l membr ane l ayer s t he same wor kday, unl ess suppor t ed ot her wi se by r oof membr ane manuf act ur er appl i cat i on i nst r uct i ons and appr oved by t he Cont r act i ng Of f i cer . Pr ovi de t i ght smoot h l ami nat i ons of each membr ane l ayer wi t hout wr i nkl es, r i dges, buckl es, k i nks, f i shmout hs, or voi ds.

Ensur e f ul l membr ane adhesi on and f ul l l ap seal s. Rewor k t o seal any open l aps pr i or t o appl i cat i on of subsequent membr ane l ayer s. The compl et ed membr ane appl i cat i on must be f r ee of sur f ace abr asi ons, ai r pocket s, bl i s t er s, r i dges, wr i nkl es, buckl es, k i nks, f i shmout hs, voi ds, or open seams.

3. 3. 6. 1 Cap Sheet I nst al l at i on

Under l y i ng appl i ed membr ane must be i nspect ed and r epai r ed 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. Do not appl y cap sheet i f r ai n or f r ozen pr eci pi t at i on has occur r ed wi t hi n t he pr evi ous 24 hour s. Al i gn cap membr ane and appl y by t he speci f i ed met hod wi t h t he pr oper s i de and end l ap wi dt hs. Set cap sheet i n hot asphal t as r ecommended by t he modi f i ed bi t umen membr ane manuf act ur er . Cut at a 45 degr ee angl e acr oss sel vage edge of cap membr ane t o be over l apped i n end l ap ar eas pr i or t o appl y i ng over l appi ng cap membr ane. Appl y mat chi ng gr anul es i n any ar eas of bi t umen bl eed out whi l e t he asphal t i s st i l l hot . Mi ni mi ze t r af f i c on newl y i nst al l ed cap sheet membr ane.

3. 3. 6. 2 Backnai l i ng of Cap Sheet

Unl ess ot her wi se r ecommended by t he modi f i ed bi t umen membr ane manuf act ur er and appr oved by t he Cont r act i ng Of f i cer , pr ovi de mi ni mum 3- 1/ 2 i nch wi de nai l i ng st r i ps mat chi ng i nsul at i on t hi ckness and appl i ed per pendi cul ar t o r oof s l ope f or backnai l i ng of r oof membr ane. Space nai l i ng st r i ps as r ecommended by t he membr ane manuf act ur er , but not exceedi ng 16 f oot on cent er unl ess appr oved ot her wi se by t he Cont r act i ng Of f i cer . Coor di nat e t he nai l er i nst al l at i on wi t h i nsul at i on r equi r ement s. I nst al l t he modi f i ed bi t umen cap sheet t o pr ovi de f or end l aps at nai l er l ocat i ons.

Nai l t he modi f i ed bi t umen cap sheet at t he end l ap ar ea acr oss t he wi dt h of t he sheet .