07 41 13.pdf

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

SECTI ON 07 41 13

METAL ROOF PANELS

04/17

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.

ALUMI NUM ASSOCI ATI ON ( AA)

AA ADM ( 2015) Al umi num Desi gn Manual

AMERI CAN I NSTI TUTE OF STEEL CONSTRUCTI ON ( AI SC)

AI SC 341 ( 2010) Sei smi c Pr ovi s i ons f or St r uct ur al St eel Bui l di ngs

AMERI CAN I RON AND STEEL I NSTI TUTE ( AI SI )

AI SI S100 ( 2012) Nor t h Amer i can Speci f i cat i on f or t he Desi gn of Col d- For med St eel St r uct ur al Members

AI SI SG03- 3 ( 2002; Suppl 2001- 2004; R 2008) Col d- For med St eel Desi gn Manual Set

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 WELDI NG SOCI ETY ( AWS)

AWS A5. 1/ A5. 1M ( 2012) Speci f i cat i on f or Car bon St eel El ect r odes f or Shi el ded Met al Ar c Wel di ng

AWS D1. 1/ D1. 1M ( 2015; Er r at a 1 2015; Er r at a 2 2016) St r uct ur al Wel di ng Code - St eel

AWS D1. 2/ D1. 2M ( 2014) St r uct ur al Wel di ng Code - Al umi num

ASTM I NTERNATI ONAL ( ASTM)

ASTM A1008/ A1008M ( 2015) St andar d Speci f i cat i on f or St eel , Sheet , Col d- Rol l ed, Car bon, St r uct ur al , Hi gh- St r engt h Low- Al l oy and Hi gh- St r engt h Low- Al l oy wi t h I mpr oved For mabi l i t y , Sol ut i on Har dened, and Bake Har dened

ASTM A123/ A123M ( 2013) St andar d Speci f i cat i on f or Zi nc ( Hot - Di p Gal vani zed) Coat i ngs on I r on and St eel Pr oduct s

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ASTM A36/ A36M ( 2014) St andar d Speci f i cat i on f or Car bon St r uct ur al St eel

ASTM A424/ A424M ( 2009a; R 2016) St andar d Speci f i cat i on f or St eel Sheet f or Por cel ai n Enamel i ng

ASTM A463/ A463M ( 2010; R 2015) St andar d Speci f i cat i on f or St eel Sheet , Al umi num- Coat ed, by t he Hot - Di p Pr ocess

ASTM A653/ A653M ( 2015; E 2016) St andar d Speci f i cat i on f or St eel Sheet , Zi nc- Coat ed ( Gal vani zed) or Zi nc- I r on Al l oy- Coat ed ( Gal vanneal ed) by t he Hot - Di p Pr ocess

ASTM A755/ A755M ( 2016) St andar d Speci f i cat i on f or St eel Sheet , Met al l i c Coat ed by t he Hot - Di p Pr ocess and Pr epai nt ed by t he Coi l - Coat i ng Pr ocess f or Ext er i or Exposed Bui l di ng Products

ASTM A792/ A792M ( 2010) St andar d Speci f i cat i on f or St eel Sheet , 55% Al umi num- Zi nc Al l oy- Coat ed by t he Hot - Di p Pr ocess

ASTM A924/ A924M ( 2016) St andar d Speci f i cat i on f or Gener al Requi r ement s f or St eel Sheet , Met al l i c- Coat ed by t he Hot - Di p Pr ocess

ASTM B117 ( 2016) St andar d Pr act i ce f or Oper at i ng Sal t Spr ay ( Fog) Appar at us

ASTM B209 ( 2014) St andar d Speci f i cat i on f or Al umi num and Al umi num- Al l oy Sheet and Pl at e

ASTM B209M ( 2014) St andar d Speci f i cat i on f or Al umi num and Al umi num- Al l oy Sheet and Pl at e ( Met r i c)

ASTM C286 ( 1999; R 2009) St andar d Ter mi nol ogy Rel at i ng t o Por cel ai n Enamel and Cer ami c- Met al Syst ems

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 C553 ( 2013) St andar d Speci f i cat i on f or Mi ner al Fi ber Bl anket Ther mal I nsul at i on f or Commer ci al and I ndust r i al Appl i cat i ons

ASTM C792 ( 2004; R 2008) Ef f ect s of Heat Agi ng on Wei ght Loss, Cr acki ng, and Chal ki ng of El ast omer i c Seal ant s

ASTM C920 ( 2014a) St andar d Speci f i cat i on f or El ast omer i c Joi nt Seal ant s

ASTM D1056 ( 2014) St andar d Speci f i cat i on f or Fl exi bl e Cel l ul ar Mat er i al s - Sponge or Expanded

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Rubber

ASTM D1308 ( 2013) Ef f ect of Househol d Chemi cal s on Cl ear and Pi gment ed Or gani c Fi ni shes

ASTM D1654 ( 2008) Eval uat i on of Pai nt ed or Coat ed Speci mens Subj ect ed t o Cor r osi ve Environments

ASTM D1667 ( 2005; R 2011) Fl exi bl e Cel l ul ar Mat er i al s

- Pol y ( Vi nyl Chl or i de) Foam ( Cl osed- Cel l )

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 D2244 ( 2015a) Cal cul at i on of Col or Tol er ances and Col or Di f f er ences f r om I nst r ument al l y Measur ed Col or Coor di nat es

ASTM D2247 ( 2015) Test i ng Wat er Resi st ance of Coat i ngs i n 100% Rel at i ve Humi di t y

ASTM D226/ D226M ( 2009) St andar d Speci f i cat i on f or Asphal t - Sat ur at ed Or gani c Fel t Used i n Roof i ng and Wat er pr oof i ng

ASTM D2794 ( 1993; R 2010) Resi st ance of Or gani c Coat i ngs t o t he Ef f ect s of Rapi d Def or mat i on ( I mpact )

ASTM D3359 ( 2009; E 2010; R 2010) Measur i ng Adhesi on by Tape Test

ASTM D3363 ( 2005; E 2011; R 2011; E 2012) Fi l m Har dness by Penci l Test

ASTM D4214 ( 2007; R 2015) St andar d Test Met hod f or Eval uat i ng t he Degr ee of Chal k i ng of Ext er i or Pai nt Fi l ms

ASTM D4587 ( 2011) St andar d Pr act i ce f or Fl uor escent UV- Condensat i on Exposur es of Pai nt and Rel at ed Coat i ngs

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 D522/ D522M ( 2014) Mandr el Bend Test of At t ached Or gani c Coat i ngs

ASTM D523 ( 2014) St andar d Test Met hod f or Specul ar Gloss

ASTM D5894 ( 2016) Cycl i c Sal t Fog/ UV Exposur e of

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Pai nt ed Met al , ( Al t er nat i ng Exposur es i n a Fog/ Dr y Cabi net and a UV/ Condensat i on Cabinet)

ASTM D610 ( 2008; R 2012) Eval uat i ng Degr ee of Rust i ng on Pai nt ed St eel Sur f aces

ASTM D714 ( 2002; R 2009) Eval uat i ng Degr ee of Bl i st er i ng of Pai nt s

ASTM D822 ( 2001; R 2006) Fi l t er ed Open- Fl ame Car bon- Ar c Exposur es of Pai nt and Rel at ed Coatings

ASTM D968 ( 2015) Abr asi on Resi st ance of Or gani c Coat i ngs by Fal l i ng Abr asi ve

ASTM E1592 ( 2005; R 2012) St r uct ur al Per f or mance of Sheet Met al Roof and Si di ng Syst ems by Uni f or m St at i c Ai r Pr essur e Di f f er ence

ASTM E2140 ( 2001; R 2009) St andar d Test Met hod f or Wat er Penet r at i on of Met al Roof Panel Syst ems by St at i c Wat er Pr essur e Head

ASTM E84 ( 2015b) St andar d Test Met hod f or Sur f ace Bur ni ng Char act er i st i cs of Bui l di ng Materials

ASTM G152 ( 2013) Oper at i ng Open Fl ame Car bon Ar c Li ght Appar at us f or Exposur e of Nonmet al l i c Mat er i al s

ASTM G153 ( 2013) Oper at i ng Encl osed Car bon Ar c Li ght Appar at us f or Exposur e of Nonmet al l i c Materials

FM GLOBAL ( FM)

FM 4471 ( 2010) Cl ass I Panel Roof s

METAL BUI LDI NG MANUFACTURERS ASSOCI ATI ON ( MBMA)

MBMA RSDM ( 2000) Met al Roof i ng Syst ems Desi gn Manual

NATI ONAL ROOFI NG CONTRACTORS ASSOCI ATI ON ( NRCA)

NRCA 0420 ( 2010) Ar chi t ect ur al Met al Fl ashi ng, Condensat i on Cont r ol and Rer oof i ng

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

PORCELAI N ENAMEL I NSTI TUTE ( PEI )

PEI 1001 ( 1996) Speci f i cat i on f or Ar chi t ect ur al Por cel ai n Enamel ( ALS- 100)

PEI CG- 3 ( 2005) Col or Gui de f or Ar chi t ect ur al Por cel ai n Enamel

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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

UNDERWRI TERS LABORATORI ES ( UL)

UL 580 ( 2006; Repr i nt Oct 2013) Test s f or Upl i f t Resi st ance of Roof Assembl i es

UL Bl d Mat Di r ( 2012) Bui l di ng Mat er i al s Di r ect or y

1. 2 DESCRI PTI ON OF METAL ROOF SYSTEM

1. 2. 1 Per f or mance Requi r ement s

St eel panel s and accessor y component s must conf or m t o t he f ol l owi ng standards:

ASTM A1008/ A1008M

ASTM A123/ A123M

ASTM A36/ A36M

ASTM A424/ A424M, ASTM C286, PEI 1001, PEI CG- 3 f or Por cel ai n and Cer ami c

Enameling ASTM A463/ A463M f or al umi num coat ed st eel sheet ASTM A755/ A755M f or met al l i c coat ed st eel sheet f or ext er i or coi l pr epai nt ed appl i cat i ons.

ASTM A924/ A924M f or met al l i c coat ed st eel sheet ASTM D522/ D522M f or appl i ed coat i ngs UL Bl d Mat Di r

1. 2. 1. 1 Hydr ost at i c Head Resi st ance

No wat er penet r at i on when t est ed accor di ng t o ASTM E2140. Submi t l eakage t est r epor t upon compl et i on of i nst al l at i on.

1. 2. 1. 2 Wi nd Upl i f t Resi st ance

Pr ovi de met al r oof panel syst em t hat conf or m t o t he r equi r ement s of ASTM E1592 and UL 580. Upl i f t f or ce due t o wi nd act i on gover ns t he desi gn f or panel s. Submi t wi nd upl i f t t est r epor t pr i or t o commenci ng installation.

Roof syst em and at t achment s must r esi st t he wi nd l oads as det er mi ned by ASCE 7, i n pounds per squar e f oot . Met al r oof panel s and component mat er i al s must al so compl y wi t h t he r equi r ement s i n FM 4471 as par t of a panel r oof i ng syst em as l i s t ed i n Fact or y Mut ual Gui de ( FMG) " Appr oval Gui de" f or c l ass 1 or noncombust i bl e const r uct i on, as appl i cabl e.

I dent i f y al l mat er i al s wi t h FMG mar ki ngs.

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:

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SD- 02 Shop Dr awi ngs

Roof i ng Panel s; G

Fl ashi ng and Accessor i es; G

Gut t er / Downspout Assembl y; G

SD- 03 Pr oduct Dat a

Submi t manuf act ur er ' s cat al og dat a f or t he f ol l owi ng i t ems:

Roof Panel s; G

Accessor i es; G

Fast ener s; G

Pr essur e Sensi t i ve Tape; G

Under l ayment s; G

Gasket s and Seal i ng/ I nsul at i ng Compounds; G

Al umi ni zed St eel Repai r Pai nt ;

Enamel Repai r Pai nt ; G

Gal vani z i ng Repai r Pai nt ;

SD- 04 Sampl es

Roof Panel s; G

Fact or y- appl i ed Col or Fi ni sh, Sampl es, 9 i nch l engt hs, f ul l wi dt h;

Accessor i es; G

Fast ener s; G

Gasket s and Seal ant / I nsul at i ng Compounds; G

SD- 05 Desi gn Dat a

Wi nd Upl i f t Resi st ance; G

SD- 06 Test Repor t s

Leakage Test Repor t ; G

Wi nd Upl i f t Test Repor t ; G

Fi r e Rat i ng Test Repor t ; G

Fact or y Fi ni sh and Col or Per f or mance Requi r ement s; G

SD- 07 Cer t i f i cat es

Roof Panel s; G

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Coi l St ock Compat i bi l i t y ; G

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

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

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

I nst al l at i on Manual ; G

SD- 11 Cl oseout Submi t t al s

War r ant i es; G

I nf or mat i on Car d; G

1. 4 QUALI TY ASSURANCE

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

Submi t document at i on ver i f y i ng met al r oof panel manuf act ur er has been i n t he busi ness of manuf act ur i ng met al r oof panel s f or a per i od of not l ess t han 5 year s.

Manuf act ur er must al so pr ovi de engi neer i ng ser vi ces by an aut hor i zed engi neer , cur r ent l y l i censed i n t he geogr aphi c ar ea of t he pr oj ect , wi t h a mi ni mum of f i ve ( 5) year s exper i ence as an engi neer knowl edgeabl e i n r oof wi nd desi gn anal ysi s, pr ot ocol s and pr ocedur es f or MBMA RSDM, ASCE 7, UL 580, and FM 4471. Engi neer must pr ovi de cer t i f i ed engi neer i ng cal cul at i ons f or t he pr oj ect conf or mi ng t o t he st at ed r ef er ences.

1. 4. 1. 1 Manuf act ur er ' s Techni cal Repr esent at i ve

The manuf act ur er ' s t echni cal r epr esent at i ve must be t hor oughl y f ami l i ar wi t h t he pr oduct s t o be i nst al l ed, i nst al l at i on r equi r ement s and pr act i ces, and wi t h any speci al consi der at i ons i n t he geogr aphi cal ar ea of t he pr oj ect . The r epr esent at i ve must per f or m f i el d i nspect i ons and at t end meet i ngs as speci f i ed.

1. 4. 1. 2 Si ngl e Sour ce

Roof i ng panel s, c l i ps, c l osur es, and ot her accessor i es must be st andar d pr oduct s of t he same manuf act ur er , and t he most r ecent desi gn of t he manuf act ur er t o oper at e as a compl et e syst em f or t he i nt ended use.

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

Met al r oof 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 panel manuf act ur er and have a mi ni mum of Fi 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 , appr oved at a l evel capabl e of pr ovi di ng t he speci f i ed war r ant y. Suppl y t he names, l ocat i ons and cl i ent cont act i nf or mat i on of 5 pr oj ect s of s i mi l ar s i ze and scope const r uct ed by appl i cat or 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 year s.

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1. 4. 3 Fi el d Ver i f i cat i on

Pr i or t o t he pr epar at i on of dr awi ngs and f abr i cat i on, ver i f y l ocat i on of r oof f r ami ng, r oof openi ngs and penet r at i ons, and any ot her speci al condi t i ons. I ndi cat e al l speci al condi t i ons and measur ement s on f i nal shop dr awi ngs.

1. 4. 4 Qual i f i cat i ons f or Wel di ng Wor k

Wel di ng pr ocedur es must conf or m t o AWS D1. 1/ D1. 1Mf or st eel or AWS D1. 2/ D1. 2M f or al umi num.

Oper at or s ar e per mi t t ed t o make onl y t hose t ypes of wel dment s f or whi ch each i s speci f i cal l y qual i f i ed.

1. 4. 5 Pr e- r 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 e- r oof i ng conf er ence t o r evi ew t he f ol l owi ng:

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

Submi t , as a mi ni mum; sampl e pr of i l es of r oof i ng panel s, wi t h f act or y- appl i ed col or f i ni sh sampl es, f l ashi ng and accessor i es, gut t er / downspout assembl y sampl es, t ypi cal f ast ener s and pr essur e sensi t i ve t ape, sampl e gasket s and seal ant / i nsul at i ng compounds. Al so i ncl ude dat a f or al umi ni zed st eel r epai r pai nt enamel r epai r pai nt gal vani z i ng r epai r pai nt , and t echni cal dat a on coi l st ock and coi l st ock compat i bi l i t y , and manuf act ur er ' s i nst al l at i on manual .

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 ve;

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 e- r oof i ng conf er ence schedul i ng wi t h t he Cont r act i ng Of f i cer . At t endance i s mandat or y f or t he Cont r act or , t he Cont r act i ng Of f i cer ' s desi gnat ed per sonnel , per sonnel di r ect l y r esponsi bl e f or t he i nst al l at i on of met al r oof syst em, 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 met al r oof i ng 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, HANDLI NG, AND STORAGE

Del i ver , st or e, and handl e panel mat er i al s, bul k r oof i ng pr oduct s, accessor i es, and ot her manuf act ur ed i t ems i n a manner t o pr event damage

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1. 5. 1 Delivery

Package and del i ver mat er i al s t o t he s i t e i n undamaged condi t i on. Pr ovi de adequat e packagi ng t o pr ot ect mat er i al s dur i ng shi pment . Do not uncr at e mat er i al s unt i l r eady f or use, except f or i nspect i on. I mmedi at el y upon ar r i val of mat er i al s at j obsi t e, i nspect mat er i al s f or damage, def or mat i on, dampness, and st ai ni ng. Remove af f ect ed mat er i al s f r om t he si t e and i mmedi at el y r epl ace. Remove moi st ur e f r om wet mat er i al s not ot her wi se af f ect ed, r est ack and pr ot ect f r om f ur t her moi st ur e exposur e.

1. 5. 2 Handling

Handl e mat er i al s i n a manner t o avoi d damage. 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. 5. 3 Storage

St ack mat er i al s st or ed on si t e on pl at f or ms or pal l et s, and cover wi t h t ar paul i ns or ot her weat her t i ght cover i ng whi ch pr event s t r appi ng of wat er or condensat i on under t he cover i ng. St or e r oof panel s so t hat wat er whi ch may have accumul at ed dur i ng t r ansi t or st or age wi l l dr ai n of f . Do not st or e panel s i n cont act wi t h mat er i al s t hat mi ght cause st ai ni ng. Secur e cover i ngs and st or ed i t ems t o pr ot ect f r om wi nd di spl acement .

1. 6 PROJECT CONDI TI ONS

Weat her Li mi t at i ons: Pr oceed wi t h i nst al l at i on onl y when exi st i ng and f or ecast weat her condi t i ons per mi t met al r oof panel wor k t o be per f or med accor di ng t o manuf act ur er ' s wr i t t en i nst r uct i ons and war r ant y r equi r ement s, and speci f i ed saf et y r equi r ement s.

1. 7 FABRICATION

Fabr i cat e and f i ni sh met al r oof panel s and accessor i es on a f act or y st at i onar y i ndust r i al t ypel eased or i nst al l er owned por t abl e r ol l i ng mi l l t o t he gr eat est ext ent possi bl e, per manuf act ur er ' s st andar d pr ocedur es and pr ocesses, and as necessar y t o f ul f i l l i ndi cat ed per f or mance r equi r ement s. Compl y wi t h i ndi cat ed pr of i l es, di mensi onal and st r uct ur al requirements.

Pr ovi de panel pr of i l e, as i ndi cat ed on dr awi ngs i ncl udi ng maj or r i bs and i nt er medi at e st i f f eni ng r i bs f or f ul l l engt h of panel . Fabr i cat e panel s i de l aps wi t h f act or y i nst al l ed capt i ve gasket ssepar at or st r i ps pr ovi di ng a weat her t i ght seal and pr event i ng met al - t o met al cont act , and mi ni mi zi ng noi se f r om movement s wi t hi n t he panel assembl y.

1. 7. 1 Finishes

Fi ni sh qual i t y and appl i cat i on pr ocesses must conf or m t o t he r el at ed st andar ds speci f i ed wi t hi n t hi s sect i on. Not i ceabl e var i at i ons wi t hi n t he same pi ece ar e not accept abl e. Var i at i ons i n appear ance of adj oi ni ng component s ar e accept abl e i f t hey ar e wi t hi n t he r ange of appr oved sampl es and ar e assembl ed or i nst al l ed t o mi ni mi ze any cont r ast i ng var i at i ons.

1. 7. 2 Accessories

Fabr i cat e f l ashi ng and t r i m t o compl y wi t h r ecommendat i ons i n SMACNA 1793

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a. For m exposed sheet met al accessor i es whi ch ar e f r ee f r om excessi ve oi l canni ng, buckl i ng, and t ool mar ks, and ar e t r ue t o l i ne and l evel s i ndi cat ed, wi t h exposed edges f ol ded back t o f or m hems.

b. End Seams: Fabr i cat e nonmovi ng seams wi t h f l at - l ock seams. For m seams and seal wi t h epoxy seam seal er . Ri vet j oi nt s f or addi t i onal strength.

c. Seal ed Joi nt s: For m non- expansi on, but movabl e j oi nt s i n met al t o accommodat e el ast omer i c seal ant t o compl y wi t h SMACNA 1793.

d. Conceal f ast ener s and expansi on pr ovi s i ons wher e possi bl e. Exposed f ast ener s ar e not al l owed on f aces of accessor i es exposed t o v i ew.

e. Fabr i cat e c l eat s and at t achment s devi ces of s i ze and met al t hi ckness r ecommended by SMACNA or by met al r oof panel manuf act ur er f or appl i cat i on, but not l ess t han t he t hi ckness of t he met al bei ng secured.

1. 8 WARRANTIES

Pr ovi de met al 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 manuf act ur er ' s st andar d 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.

1. 8. 1 Met al Roof Panel Manuf act ur er War r ant y

Fur ni sh t he met al r oof panel 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, component s, t r i m, and accessor i es necessar y f or a wat er t i ght r oof syst em const r uct i on. Make war r ant y di r ect l y t o t he Gover nment , commenci ng 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 met al 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, di spl aces, cor r odes, per f or at 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 met al r oof syst em and cor r ect i on of def ect i ve wor kmanshi p i s t he r esponsi bi l i t y of t he met al r oof panel 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 met al r oof panel manuf act ur er .

b. I f 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 48 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.

1. 8. 2 Manuf act ur er ' s Fi ni sh War r ant y

Pr ovi de a manuf act ur er ' s no- dol l ar - l i mi t 20 year war r ant y f or t he r oof i ng syst em. I ssue t he war r ant y di r ect l y t o t he Gover nment at t he dat e of Gover nment accept ance. war r ant i ng t hat t he f act or y col or f i ni sh, under nor mal at mospher i c condi t i ons at t he s i t e, wi l l not cr ack, peel , or

Apr i l 2019 Page 10 SECTI ON 07 41 13 del ami nat e; chal k i n excess of a numer i cal r at i ng of 8 when measur ed i n accor dance wi t h ASTM D4214; or f ade or change col or s i n excess of 5 NBS uni t s as measur ed i n accor dance wi t h ASTM D2244.

1. 8. 3 Met al Roof Syst em I nst al l er War r ant y

1. 8. 4 Cont i nuance of War r ant y

Repai 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 must be appr oved, as r equi r ed, 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 met al r oof syst em 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.

1. 9 CONFORMANCE AND COMPATI BI LI TY

The ent i r e met al 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 wi nd r esi st ance and sei smi c per AI SC 341 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 MBMA RSDM, NRCA Roof Man, t he met al panel manuf act ur er ' s 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.

PART 2 PRODUCTS

2. 1 ROOF PANELS

2. 1. 1 St eel Sheet Panel s

Rol l - f or m st eel sheet r oof panel s t o t he speci f i ed pr of i l e, wi t h f y = 50 ksi , 24 gauge and dept h as i ndi cat ed.

Mat er i al must be pl umb and t r ue, and wi t hi n t he t ol er ances l i s t ed:

a. Gal vani zed st eel sheet conf or mi ng t o ASTM A653/ A653M and AI SI SG03- 3.

b. Al umi num- Zi nc al l oy coat ed st eel sheet conf or mi ng t o ASTM A792/ A792M and AI SI SG03- 3.

c. I ndi v i dual panel s t o have cont i nuous l engt h suf f i c i ent t o cover t he ent i r e l engt h of any unbr oken r oof s l ope wi t h no j oi nt s or seams and f or med wi t hout war pi ng, wavi ness, or r i ppl es t hat ar e not a par t of t he panel pr of i l e and f r ee f r om damage t o t he f i ni sh coat i ng syst em.

d. Pr ovi de panel s wi t h t her mal expansi on and cont r act i on consi st ent wi t h t he t ype of syst em speci f i ed, and t he f ol l owi ng pr of i l e:

( 1) pr of i l e and cover age t o be a mi ni mum hei ght and wi dt h f r om t he manuf act ur er ' s st andar d f or t he i ndi cat ed r oof s l ope.

( 2) pr of i l e t o be a 1- 1/ 2 i nch hi gh r i b at 12 i nches o. c. wi t h smal l st i f f eni ng r i bs, 38 i nch over al l panel wi dt h wi t h 36 i nch exposed panel and exposed f ast ener s.

( 3) pr of i l e t o be a 1- 1/ 2 i nch hi gh r i b at 7. 2 i nches o. c. ; 38- 7/ 8 i nch over al l wi dt h wi t h 36 i nch exposed panel and exposed f ast ener s.

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( 4) pr of i l e t o be a 1 i nch hi gh r i b at 4 i nches o. c. ; 49- 5/ 8 i nch over al l wi dt h wi t h 48 i nch exposed panel and exposed f ast ener s.

( 5) pr of i l e t o be a 1 i nch hi gh r i b at 8 i nches o. c. ; 41- 5/ 8 i nch over al l wi dt h wi t h 40 i nch exposed panel and exposed f ast ener s.

( 6) pr of i l e t o be a 1- 3/ 4 i nch hi gh V- beam r i b at 5 i nches o. c. ;

44- 7/ 8 i nch over al l wi dt h wi t h 42 i nch exposed panel and exposed fasteners.

( 7) pr of i l e t o be a 7/ 8 i nch hi gh cor r ugat ed r i b at 2 i nches o. c. , 38- 7/ 8 i nch over al l wi dt h wi t h 36 i nch exposed panel and exposed fasteners.

( 8) pr of i l e t o be a 1, 1- 3/ 4, 2, 2- 1/ 2, i nch hi gh st andi ng seam, 12, 16, 18, 24, i nch cover age ( per cont r act document s) wi t h mechani cal cr i mpi ng or snap- t oget her seams wi t h conceal ed cl i ps and f ast ener s.

( 9) pr of i l e t o be smoot h, f l at ; embossed pat t er n; t ext ur ed; sur f ace ( as i ndi cat ed i n t he cont r act document s) .

( 10) pr of i l e t o be cust om, as shown on dr awi ngs.

2. 2 FACTORY FI NI SH AND COLOR PERFORMANCE REQUI REMENTS

Al l panel s ar e t o r ecei ve a f act or y appl i ed pol yvi nyl i dene f l uor i deKynar 500/ Hyl ar 5000 f i ni sh consi st i ng of a baked t opcoat wi t h a manuf act ur er ' s r ecommended pr i me coat conf or mi ng t o t he f ol l owi ng:

a. Met al Pr epar at i on: Al l met al i s t o have t he sur f aces car ef ul l y pr epar ed f or pai nt i ng on a cont i nuous pr ocess coi l coat i ng l i ne by al kal i c l eani ng, hot wat er r i nsi ng, appl i cat i on of chemi cal conver si on coat i ng, col d wat er r i nsi ng, seal i ng wi t h an aci d r i nse, and t hor ough drying.

b. Pr i me Coat i ng: A base coat of epoxy pai nt , speci f i cal l y f or mul at ed t o i nt er act wi t h t he t op- coat , i s t o be appl i ed t o t he pr epar ed sur f aces by r ol l coat i ng t o a dr y f i l m t hi ckness of 0. 20 pl us 0. 05 mi l s. The pr i me coat must be oven cur ed pr i or t o appl i cat i on of t he f i ni sh coat .

c. Ext er i or Fi ni sh Coat i ng: Appl y t he ext er i or f i ni sh coat i ng over t he pr i mer by r ol l coat i ng t o a dr y f i l m t hi ckness of 0. 80 pl us 0. 05 mi l s ( 3. 80 pl us 0. 05 mi l s f or Vi nyl Pl ast i sol ) f or a t ot al dr y f i l m t hi ckness of 1. 00 pl us 0. 10 mi l s ( 4. 00 pl us 0. 10 mi l s f or Vi nyl Pl ast i sol ) . Thi s ext er i or f i ni sh coat must be oven- cur ed.

d. I nt er i or f i ni sh coat i ng: Appl y a wash coat on t he r ever se si de over pr i mer by r ol l coat i ng t o a dr y f i l m t hi ckness of 0. 30 pl us 0. 05 mi l s f or a t ot al dr y f i l l t hi ckness of 0. 50 pl us 0. 10 mi l s. The wash coat must be oven cur ed.

e. Col or : The ext er i or f i ni sh chosen f r om t he manuf act ur er ' s st andar d col or char t .

f . Physi cal Pr oper t i es: Coat i ng must conf or m t o t he i ndust r y and manuf act ur er ' s st andar d per f or mance cr i t er i a as l i s t ed by t he f ol l owi ng cer t i f i ed t est r epor t s:

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General: ASTM D5894 and ASTM D4587

Abrasion: ASTM D968

Adhesion: ASTM D3359

Chalking: ASTM D4214

Chemi cal Pol l ut i on: ASTM D1308

Col or Change and Conf or mi t y: ASTM D2244

Creepage: ASTM D1654

Cycl i c Cor r osi on Test : ASTM D5894

Fl ame Spr ead: ASTM E84

Flexibility: ASTM D522/ D522M

Formability: ASTM D522/ D522M

Gl oss at 60 and 85 degr ees: ASTM D523

Humidity: ASTM D2247 and ASTM D714

Oxidation: ASTM D610

Penci l Har dness: ASTM D3363

Rever se I mpact : ASTM D2794

Sal t Spr ay: ASTM B117

Weatherometer: ASTM G152, ASTM G153 and ASTM D822

2. 2. 1 Specul ar Gl oss

Fi ni shed r oof sur f aces t o have a specul ar gl oss val ue of 30 pl us or mi nus 5 at an angl e of 60 degr ees10 or l ess at an angl e of 85 degr ees when measur ed i n accor dance wi t h ASTM D523.

2. 3 MI SCELLANEOUS METAL FRAMI NG

2. 3. 1 General

Pr ovi de col d f or med met al l i c- coat ed st eel sheet conf or mi ng t o ASTM A653/ A653M, AI SI S100, and as speci f i ed i n 05 40 00 COLD- FORMED METAL FRAMI NG unl ess ot her wi se i ndi cat ed.

2. 3. 2 Fast ener s and Mi scel l aneous Met al Fr ami ng

Pr ovi de compat i bl e t ype, cor r osi on r esi st ant , of suf f i c i ent s i ze and l engt h t o penet r at e t he suppor t i ng el ement a mi ni mum of one i nch wi t h ot her r equi r ed pr oper t i es t o f ast en mi scel l aneous met al f r ami ng member s t o

Apr i l 2019 Page 13 SECTI ON 07 41 13 subst r at es i n accor dance wi t h t he r oof panel manuf act ur er ' s and ASCE 7 requirements.

2. 3. 2. 1 Exposed Fast ener s

Fast ener s f or r oof panel s must be cor r osi on r esi st ant coat ed st eel , compat i bl e wi t h t he sheet panel or f l ashi ng mat er i al and of t he t ype and si ze r ecommended by t he manuf act ur er t o meet t he per f or mance r equi r ement s and desi gn l oads. Fast ener s f or accessor i es must be t he manuf act ur er ' s st andar d. Pr ovi de an i nt egr al met al washer , mat chi ng t he col or of at t ached mat er i al wi t h compr essi bl e seal i ng EPDM gasket appr oxi mat el y 3/ 32 i nch t hi ck f or exposed f ast ener s.

2. 3. 2. 2 Screws

Pr ovi de cor r osi on r esi st ant scr ews, coat ed st eel of t he t ype and si ze r ecommended by t he manuf act ur er t o meet t he per f or mance r equi r ement s.

2. 3. 2. 3 Rivets

Pr ovi de cl osed- end t ype r i vet s, cor r osi on r esi st ant coat ed st eel , al umi num wher e wat er t i ght connect i ons ar e r equi r ed.

2. 3. 2. 4 At t achment Cl i ps

Pr ovi de hot - di p gal vani zed, conf or mi ng t o ASTM A653/ A653M, st ai nl ess st eel , ser i es 300 cl i ps. Si ze, shape, t hi ckness and capaci t y must meet t he t hi ckness and desi gn l oad cr i t er i a speci f i ed.

2. 3. 3 El ect r odes f or Manual , Shi el ded Met al Ar c Wel di ng

El ect r odes f or manual , shi el ded met al ar c wel di ng must meet t he r equi r ement s of AWS D1. 1/ D1. 1M, and be cover ed, mi l d- st eel el ect r odes conf or mi ng t o AWS A5. 1/ A5. 1M.

2. 4 ACCESSORIES

Accessor i es must be compat i bl e wi t h t he met al r oof panel s. Sheet met al f l ashi ng, t r i m, met al c l osur e st r i ps, caps, and si mi l ar met al accessor i es must be not l ess t han t he mi ni mum t hi cknesses speci f i ed f or r oof panel s.

Pr ovi de exposed met al accessor i es t o mat ch t he panel s f ur ni shed, except as ot her wi se i ndi cat ed. Mol ded f oam r i b, r i dge and ot her c l osur e st r i ps must be cl osed- cel l or sol i d- cel l synt het i c r ubber or neopr ene pr emol ded t o mat ch conf i gur at i on of t he panel s and not absor b or r et ai n wat er .

2. 4. 1 Pr e- manuf act ur ed Accessor i 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 met al r oof syst em and appr oved f or use by t he met al r oof panel manuf act ur er . Const r uct cur bs t o mat ch r oof s l ope.

2. 4. 2 Met al Cl osur e St r i ps

Pr ovi de f act or y f abr i cat ed st eel c l osur e st r i ps of t he same gauge, t hi ckness, col or , f i ni sh and pr of i l e as t he speci f i ed r oof panel .

2. 4. 3 Rubber Cl osur e St r i ps

Pr ovi de cl osed- cel l , expanded cel l ul ar r ubber c l osur e st r i ps conf or mi ng t o

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ASTM D1056 and ASTM D1667, ext r uded or mol ded t o t he conf i gur at i on of t he speci f i ed r oof panel pr of i l e and i n l engt hs suppl i ed by r oof panel manufacturer.

2. 5 JOI NT SEALANTS

2. 5. 1 Sealants

Seal ant s ar e t o be an appr oved gun t ype f or use i n hand or ai r pr essur e caul k i ng guns at t emper at ur es above 40 degr ees F ( or f r ost - f r ee appl i cat i on at t emper at ur es above 10 degr ees F) wi t h a mi ni mum sol i d cont ent of 85 per cent of t he t ot al vol ume. Seal ant must dr y wi t h a t ough, dur abl e sur f ace ski n whi ch per mi t s i t t o r emai n sof t and pl i abl e under neat h, pr ovi di ng a weat her t i ght j oi nt . No mi gr at or y st ai ni ng, i n conf or mance wi t h t o ASTM C792, i s per mi t t ed on pai nt ed or unpai nt ed met al , st one, gl ass, v i nyl or wood.

Pr i me al l j oi nt s t o r ecei ve seal ant s wi t h a compat i bl e one- component or t wo- component pr i mer as r ecommended by t he r oof panel manuf act ur er .

2. 5. 1. 1 Shop Appl i ed Seal ant s

Seal ant f or shop- appl i ed caul k i ng must be an appr oved gun gr ade, non- sag one- component pol ysul f i de or s i l i cone conf or mi ng t o ASTM C792 and ASTM C920, Type I I , wi t h a cur i ng t i me whi ch ensur es t he seal ant s pl ast i c i t y at t he t i me of f i el d er ect i on. Col or t o mat ch panel col or .

2. 5. 1. 2 Fi el d Appl i ed Seal ant s

Seal ant s f or f i el d- appl i ed caul k i ng must be an appr oved gun gr ade, non- sag on- component pol ysul f i de or t wo component pol yur et hane wi t h an i ni t i al maxi mum Shor e A dur omet er har dness of 25, conf or mi ng t o ASTM C920, Type I I . Col or t o mat ch panel col or .

2. 5. 1. 3 Tape Seal ant s

Pr ovi de pr essur e sensi t i ve, 100 per cent sol i d t ape seal ant wi t h a r el ease paper backi ng; per manent l y el ast i c, non- saggi ng, non- t oxi c and non- st ai ni ng as appr oved by t he r oof panel manuf act ur er .

2. 5. 2 Sheet Met al Fl ashi ng and Tr i m

2. 5. 2. 1 Fabr i cat i on, Gener al

Cust om f abr i cat e sheet met al f l ashi ng and t r i m t o compl y wi t h r ecommendat i ons wi t hi n t he SMACNA 1793 t hat appl y t o desi gn, di mensi ons, met al t ype, and ot her char act er i st i cs of desi gn i ndi cat ed. Shop f abr i cat e i t ems t o t he gr eat est ext ent possi bl e. Obt ai n and ver i f y f i el d measur ement s f or accur at e f i t pr i or t o shop f abr i cat i on. Fabr i cat e f l ashi ng and t r i m wi t hout excessi ve oi l canni ng, buckl i ng, and t ool mar ks, t r ue t o l i ne and l evel s i ndi cat ed, wi t h exposed edges f ol ded back t o f or m hems.

2. 5. 2. 2 Roof Dr ai nage Sheet Met al Fabr i cat i ons

Gut t er s: Fabr i cat e t o cr oss sect i on i ndi cat ed, wi t h r i vet ed and sol der ed j oi nt s, compl et e wi t h end pi eces, out l et t ubes, and ot her speci al accessor i es as r equi r ed. Fabr i cat e i n mi ni mum 96 i nch l ong sect i ons.

Fabr i cat e expansi on j oi nt s and accessor i es f r om t he same met al as gut t er s, Apr i l 2019 Page 15 SECTI ON 07 41 13 unl ess ot her wi se i ndi cat ed.

Downspout s: Fabr i cat e squar e downspout s compl et e wi t h mi t er ed el bows.

Fur ni sh wi t h met al hangar s of same mat er i al as downspout s and anchor s.

2. 6 INSULATION

I nsul at i on, f acer mat er i al and at t achment must be compat i bl e wi t h met al r oof syst em speci f i ed, as appr oved by t he r oof panel manuf act ur er , and conf or m t o ASTM C552 ( cel l ul ar gl ass) or ASTM C553 ( f i ber bl anket s) .

2. 6. 1 Fi r e Rat ed Assembl y Syst em

Pr ovi de semi - r i gi d gl ass- f i ber i nsul at i on boar d conf or mi ng t o ASTM C553, For m A, Cl ass 1, Cl ass A f i r e- hazar d c l assi f i cat i on wi t h a mi ni mum densi t y of 1. 55 pounds per cubi c f oot ( pcf ) and 1- 1/ 2 i nches t hi ck. Ther mal conduct i v i t y ( K) must not exceed 0. 24.

2. 6. 2 Fi r e Rat ed Roof Panel Assembl y

Pr ovi de mat er i al s f or f i r e- r at ed r oof panel const r uct i on as f ol l ows:

I mpal i ng c l i ps, accessor i es, and f ast ener s must be UL l i s t ed 40 U18. 24 UL Bl d Mat Di r gal vani zed st eel sheet or i mpal i ng bol t s wel ded t o each wal l uni t j oi nt and spaced not mor e t han 48 i nches on cent er .

Pr ovi de bar subgi r t s 1- 1/ 2 by 1/ 8 i nch gal vani zed st eel wi t h s l ot t ed hol es f or wel di ng t o end of i mpal i ng c l i p spi kes.

Pr ovi de gal vani zed st eel st r uct ur al angl es and f l ashi ng angl es, gage or t hi ckness as i ndi cat ed, or mat er i al as speci f i ed. Fl ashi ng angl es must be not l ess t han No. 18 U. S. st andar d gage.

Pr ovi de hot - di p gal vani zed st eel met al f aci ng conf or mi ng t o ASTM A653/ A653M, Gr ade A. Coat i ng must conf or m t o, ASTM A653/ A653M and ASTM A924/ A924M.

Met al f aci ng must be as i ndi cat ed and f abr i cat ed of enamel - coat ed hot - di p gal vani zed st eel conf or mi ng t o ASTM A653/ A653M, Gr ade A. Coat i ng must conf or m t o ASTM A653/ A653M and ASTM A924/ A924M. Pr ovi de Cl ass A f i r e hazar d c l assi f i cat i on f i ni sh. Fl ame spr ead, f uel cont r i but ed, or smoke devel oped cannot exceed a val ue of 25.

Submi t f i r e r at i ng t est r epor t t o cont r act i ng of f i cer f or r evi ew and appr oval . Secur e wr i t t en appr oval pr i or t o commencement of i nst al l at i on.

2. 7 UNDERLAYMENTS

2. 7. 1 Sel f - Adher i ng Modi f i ed Bi t umen Under l ayment

Pr ovi de sel f - adher i ng modi f i ed bi t umen membr ane under l ayment mat er i al i n compl i ance wi t h ASTM D1970/ D1970M, sui t abl e f or use as under l ayment f or met al r oof i ng. Use membr ane r esi st ant t o cycl i cal el evat ed t emper at ur es f or ext ended per i od of t i me i n hi gh heat ser vi ce condi t i ons. Pr ovi de membr ane wi t h i nt egr al non- t acki ng t op sur f ace of pol yet hyl ene f i l m or ot her sur f ace mat er i al t o ser ve as separ at or bet ween bi t umi nous mat er i al and met al pr oduct s t o be appl i ed above.

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2. 8 GASKETS AND SEALI NG/ I NSULATI NG COMPOUNDS

Gasket s and seal i ng/ i nsul at i ng compounds must be nonabsor pt i ve and sui t abl e f or i nsul at i ng cont act poi nt s of i ncompat i bl e mat er i al s.

Seal i ng/ i nsul at i ng compounds must be non- r unni ng af t er dr y i ng.

2. 9 FI NI SH REPAI R MATERI AL

Onl y use r epai r and t ouch- up pai nt suppl i ed by t he r oof panel manuf act ur er and i s compat i bl e wi t h t he speci f i ed syst em.

PART 3 EXECUTI ON

3. 1 EXAMINATION

Exami ne subst r at es, ar eas, and condi t i ons, wi t h i nst al l er pr esent , f or compl i ance wi t h r equi r ement s f or i nst al l at i on t ol er ances, met al r oof panel suppor t s, and ot her condi t i ons af f ect i ng per f or mance of t he wor k. Ensur e sur f aces ar e sui t abl e, dr y and f r ee of def ect s and pr oj ect i ons whi ch mi ght af f ect t he i nst al l at i on.

Exami ne pr i mar y and secondar y r oof f r ami ng t o ver i f y t hat r af t er s, pur l i ns, angel s, channel s, and ot her st r uct ur al suppor t member s f or panel s and anchor ages have been i nst al l ed wi t hi n al i gnment t ol er ances r equi r ed by met al r oof panel manuf act ur er , UL, ASTM, and ASCE 7 and appl i cabl e sei smi c r equi r ement s.

Exami ne sol i d r oof sheat hi ng t o ver i f y t hat sheat hi ng j oi nt s ar e suppor t ed by f r ami ng or bl ocki ng; and t hat i nst al l at i on i s wi t hi n f l at ness t ol er ances r equi r ed by met al r oof panel manuf act ur er .

Exami ne r ough- i n f or component s and syst ems penet r at i ng met al r oof panel s t o ver i f y act ual l ocat i ons of penet r at i ons r el at i ve t o seam l ocat i ons of panel s pr i or t o i nst al l at i on.

Submi t a wr i t t en r epor t t o t he Cont r act i ng Of f i cer , endor sed by t he i nst al l er , l i s t i ng condi t i ons det r i ment al t o t he per f or mance of t he wor k.

Pr oceed wi t h i nst al l at i on onl y af t er def ect s have been cor r ect ed.

3. 2 INSTALLATION

I nst al l at i on must meet speci f i ed r equi r ement s and be i n accor dance wi t h t he manuf act ur er ' s i nst al l at i on i nst r uct i ons and appr oved shop dr awi ngs.

Do not i nst al l damaged mat er i al s. Di ssi mi l ar mat er i al s whi ch ar e not compat i bl e when cont act i ng each ot her must be i nsul at ed by means of gasket s or seal i ng/ i nsul at i ng compounds. Keep al l exposed sur f aces and edges cl ean and f r ee f r om seal ant , met al cut t i ngs, hazar dous bur r s, and ot her f or ei gn mat er i al . Remove st ai ned, di scol or ed, or damaged mat er i al s f r om t he si t e.

3. 2. 1 Preparation

Cl ean al l subst r at e subst ances whi ch may be har mf ul t o i nsul at i on, and r oof panel s i ncl udi ng r emovi ng pr oj ect i ons capabl e of i nt er f er i ng wi t h wi t h i nsul at i on, and r oof panel at t achment .

I nst al l sub- pur l i ns, eave angl es, f ur r i ng, and ot her mi scel l aneous r oof

Apr i l 2019 Page 17 SECTI ON 07 41 13 panel suppor t member s and anchor age accor di ng t o met al r oof panel manuf act ur er ' s wr i t t en i nst r uct i ons.

3. 2. 2 Underlayment

I nst al l under l ayment accor di ng t o r oof panel manuf act ur er ' s wr i t t en r ecommendat i ons and r ecommendat i on i n NRCA " The NRCA Roof i ng and Wat er pr oof i ng Manual " .

3. 2. 2. 1 Sel f - Adher i ng Sheet Under l ayment

I nst al l sel f - adher i ng sheet under l ayment ; wr i nkl e f r ee on r oof deck.

Compl y wi t h l ow- t emper at ur e i nst al l at i on r est r i ct i ons of manuf act ur er wher e appl i cabl e. I nst al l at l ocat i ons i ndi cat ed on pr oj ect dr awi ngs, l apped i n a di r ect i on t o shed wat er . Lap si des not l ess t han 3- 1/ 2 i nches.

Lap ends not l ess t han 6 i nches st agger ed 24 i nches bet ween cour ses. Rol l l aps wi t h r ol l er . Cover under l ayment wi t hi n seven days.

3. 3 I NSULATI ON I NSTALLATI ON

I nst al l i nsul at i on concur r ent l y wi t h met al r oof panel i nst al l at i on, i n t hi ckness i ndi cat ed, t o cover ent i r e r oof , accor di ng t o manuf act ur er ' s wr i t t en i nst r uct i ons.

3. 4 PROTECTI ON OF APPLI ED MATERI ALS

Do not per mi t st or i ng, wal k i ng, wheel i ng, and t r ucki ng di r ect l y on appl i ed r oof i ng/ i nsul at i on mat er i al s. Pr ovi de t empor ar y wal kways, r unways, and pl at f or ms of smoot h c l ean boar ds or pl anks as necessar y t o avoi d damage t o appl i ed r oof i ng/ i nsul at i on mat er i al s, and t o di st r i but e wei ght t o conf or m t o i ndi cat ed l i ve l oad l i mi t s of r oof const r uct i on.

3. 5 FASTENER I NSTALLATI ON

Anchor met al r oof panel s and ot her component s of t he Wor k secur el y i n pl ace, usi ng appr oved f ast ener s accor di ng t o manuf act ur er ' s wr i t t en instructions.

3. 5. 1 Welding

Pr ocedur es f or manual , shi el ded met al - ar c wel di ng, t he appear ance and qual i t y of wel ds made, and t he met hods used i n cor r ect i ng wel di ng wor k must be i n accor dance wi t h AWS D1. 1/ D1. 1M.

3. 6 FLASHI NG, TRI M, AND CLOSURE I NSTALLATI ON

3. 6. 1 Gener al Requi r ement s

Compl y wi t h per f or mance r equi r ement s, manuf act ur er ' s wr i t t en i nst al l at i on i nst r uct i ons, and SMACNA 1793. Pr ovi de conceal ed f ast ener s wher e possi bl e. Set uni t s t r ue t o l i ne and l evel as i ndi cat ed. I nst al l wor k wi t h l aps, j oi nt s, and seams t hat wi l l be per manent l y wat er t i ght and weat her r esi st ant . Wor k i s t o be accompl i shed t o f or m weat her t i ght const r uct i on wi t hout waves, war ps, buckl es, f ast eni ng st r esses or di st or t i on, and t o al l ow f or expansi on and cont r act i on. Cut t i ng, f i t t i ng, dr i l l i ng, and ot her oper at i ons i n connect i on wi t h sheet met al r equi r ed t o accompl i sh t he wor k must conf or m t o t he manuf act ur er s wr i t t en i nst r uct i ons.

Apr i l 2019 Page 18 SECTI ON 07 41 13

3. 6. 2 Met al Fl ashi ng

I nst al l exposed met al f l ashi ng at bui l di ng cor ner s, r akes, eaves, j unct i ons bet ween met al s i di ng and r oof i ng, val l eys and changes of f s l ope or di r ect i on i n met al r oof i ng, bui l di ng expansi on j oi nt s and gut t er s.

Exposed met al f l ashi ng must be t he same mat er i al , col or , and f i ni sh as t he speci f i ed met al r oof i ng panel s. Fur ni sh f l ashi ng i n mi ni mum 8 f oot l engt hs. Exposed f l ashi ng must have 1 i nch l ocked and bl i nd sol der ed end j oi nt s, wi t h expansi on j oi nt s at i nt er val s of no gr eat er t han 16 f eet .

Fast en f l ashi ng at not mor e t han 8 i nches on cent er f or r oof s, except wher e f l ashi ng i s hel d i n pl ace by t he same scr ews used t o secur e panel s.

Exposed f l ashi ng and f l ashi ng subj ect t o r ai n penet r at i on must be bedded i n speci f i ed j oi nt seal ant . Fl ashi ng whi ch i s cont act wi t h di ssi mi l ar met al s must be i sol at ed by means of t he speci f i ed asphal t mast i c mat er i al t o pr event el ect r ol yt i c det er i or at i on.

For m dr i ps t o t he pr of i l e i ndi cat ed, wi t h t he edge f ol ded back 1/ 2 i nch t o f or m a r ei nf or ced dr i p edge.

3. 7 ROOF PANEL I NSTALLATI ON

Pr ovi de met al r oof panel s of f ul l l engt h f r om eave t o r i dge or eave t o wal l as i ndi cat ed, unl ess ot her wi se i ndi cat ed or appr oved by BCE. Anchor met al r oof panel s or ot her component s of t he Wor k secur el y i n pl ace, wi t h pr ovi s i ons f or t her mal and st r uct ur al movement i n accor dance wi t h NRCA 0420.

St eel Roof Panel s: Use st ai nl ess st eel f ast ener s f or ext er i or sur f aces and gal vani zed f ast ener s f or unexposed sur f aces.

Al umi num Roof Panel s: Use al umi num or st ai nl ess st eel f ast ener s f or sur f aces exposed t o t he ext er i or and al umi num or gal vani zed st eel f ast ener s f or unexposed sur f aces.

Anchor Cl i ps: Anchor met al r oof panel s and ot her component s of t he Wor k secur el y i n pl ace, usi ng appr oved f ast ener s accor di ng t o manuf act ur er ' s wr i t t en i nst r uct i ons. Pr ovi de al l bl ocki ng and nai l er s as r equi r ed.

Met al Pr ot ect i on: Wher e di ssi mi l ar met al s cont act each ot her or possi bl y cor r osi ve subst r at es, pr ot ect agai nst gal vani c act i on by per manent separ at i on as r ecommended by t he met al r oof panel manufacturer.

Joi nt Seal er s: I nst al l gasket s, j oi nt f i l l er s, and seal ant s wher e i ndi cat ed and r equi r ed f or weat her pr oof per f or mance of met al r oof panel syst em. Pr ovi de t ypes of gasket s, f i l l er s, and seal ant s i ndi cat ed or , i f not i ndi cat ed, t ypes r ecommended by met al r oof panel manufacturer.

3. 7. 1 Handl i ng and Er ect i on

Er ect r oof i ng syst em i n accor dance wi t h t he appr oved er ect i on dr awi ngs, pr i nt ed i nst r uct i ons and saf et y pr ecaut i ons of t he manuf act ur er .

Do not subj ect panel s t o over l oadi ng, abuse, or undue i mpact . Do not appl y bent , chi pped, or def ect i ve panel s. Damaged panel s must be r epl aced and r emoved f r om t he si t e at t he cont r act or s expense. Er ect panel s t r ue, Apr i l 2019 Page 19 SECTI ON 07 41 13 pl umb, and i n exact al i gnment wi t h t he hor i zont al and ver t i cal edges of t he bui l di ng, secur el y anchor ed, and wi t h i ndi cat ed r ake, eave, and cur b over hang. Al l ow f or t her mal movement of t he r oof i ng, movement of t he bui l di ng st r uct ur e, and pr ovi de per manent f r eedom f r om noi se due t o wi nd pressure.

Do not per mi t st or age, wal k i ng, wheel i ng or t r ucki ng di r ect l y on appl i ed r oof i ng mat er i al s. Pr ovi de t empor ar y wal kways, r unways, and pl at f or ms of smoot h c l ean boar ds or pl anks as necessar y t o avoi d damage t o t he i nst al l ed r oof i ng mat er i al s, and t o di st r i but e wei ght t o conf or m t o t he i ndi cat ed l i ve l oad l i mi t s of t he r oof const r uct i on.

Roof panel s must be l ai d wi t h cor r ugat i ons i n t he di r ect i on of t he r oof s l ope. End l aps of ext er i or r oof i ng must not be l ess t han 8 i nches; s i de l aps of st andar d ext er i or cor r ugat ed panel s must not be l ess t han 2- 1/ 2 corrugations.

Fi el d cut t i ng of met al r oof panel s by t or ch i s not per mi t t ed. Fi el d cut onl y as r ecommended by manuf act ur er ' s wr i t t en i nst r uct i ons.

3. 7. 2 Cl osur e St r i ps

I nst al l met al c l osur e st r i ps at open ends of met al r i dge r ol l s; open ends of cor r ugat ed or r i bbed pat t er n r oof s, and at i nt er sect i on of wal l and r oof , unl ess open ends ar e conceal ed wi t h f or med eave f l ashi ng; r ake of met al r oof…