Specs_07_92_00.pdf

ACA Al er t Ai r cr af t Shel t er s WYTD079031 Tol edo Expr ess Ai r por t , OH

SECTI ON 07 92 00

JOI NT SEALANTS

08/16

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.

ASTM I NTERNATI ONAL ( ASTM)

ASTM C1193 ( 2013) St andar d Gui de f or Use of Joi nt Sealants

ASTM C1521 ( 2013) St andar d Pr act i ce f or Eval uat i ng Adhesi on of I nst al l ed Weat her pr oof i ng Seal ant Joi nt s

ASTM C920 ( 2018) 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 Rubber

ASTM D2452 ( 2015) St andar d Test Met hod f or Ext r udabi l i t y of Oi l - and Resi n- Base Caul k i ng Compounds

ASTM D2453 ( 2015) St andar d Test Met hod f or Shr i nkage and Tenaci t y of Oi l - and Resi n- Base Caul k i ng Compounds

1. 2 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 . ] [ f or i nf or mat i on onl y. When used, a desi gnat i on f ol l owi ng t he " G" desi gnat i on i dent i f i es t he of f i ce t hat wi l l r evi ew t he submi t t al f or t he Gover nment . ] Submi t t al s wi t h an " S" ar e f or i ncl usi on i n t he Sust ai nabi l i t y eNot ebook, i n conf or mance wi t h Sect i on 01 33 29 SUSTAI NABI LI TY REPORTI NG. Submi t t he f ol l owi ng i n accor dance wi t h Sect i on

01 33 00 SUBMI TTAL PROCEDURES:

SD- 03 Pr oduct Dat a

Seal ant s; G[ , [ _____] ]

Pr i mer s; G[ , [ _____] ]

Bond Br eaker s; G[ , [ _____] ]

Backst ops; G[ , [ _____] ]

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SD- 06 Test Repor t s

Fi el d Adhesi on; G[ , [ _____] ]

SD- 07 Cer t i f i cat es

I ndoor Ai r Qual i t y; G[ , [ _____] ]

SD- 11 Cl oseout Submi t t al s

I ndoor Ai r Qual i t y For I nt er i or Seal ant s; S

I ndoor Ai r Qual i t y For I nt er i or Fl oor Joi nt Seal ant s; S

I ndoor Ai r Qual i t y For I nt er i or Acoust i cal Seal ant s; S

I ndoor Ai r Qual i t y For I nt er i or Caul k i ng; S

1. 3 PRODUCT DATA

I ncl ude st or age r equi r ement s, shel f l i f e, cur i ng t i me, i nst r uct i ons f or mi xi ng and appl i cat i on, and accessor i es. Pr ovi de manuf act ur er ' s Saf et y Dat a Sheet s ( SDS) f or each sol vent , pr i mer and seal ant mat er i al pr oposed.

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[ 1. 4 CERTIFICATIONS

1. 4. 1 I ndoor Ai r Qual i t y Cer t i f i cat i ons

Submi t r equi r ed i ndoor ai r qual i t y cer t i f i cat i ons i n one submi t t al package.

1. 4. 1. 1 Adhesi ves and Seal ant s

Pr ovi de pr oduct s cer t i f i ed t o meet i ndoor ai r qual i t y r equi r ement s by UL 2818 ( Gr eenguar d) Gol d, SCS Gl obal Ser vi ces I ndoor Advant age Gol d or pr ovi de val i dat i on by ot her t hi r d- par t y pr ogr am t hat pr oduct s meet t he r equi r ement s of t hi s par agr aph. Seal ant s and non- aer osol adhesi ve pr oduct s used on t he i nt er i or of t he bui l di ng ( def i ned as i nsi de of t he weat her pr oof i ng syst em) must meet ei t her emi ssi ons r equi r ement s of CDPH SECTI ON 01350 ( l i mi t r equi r ement s f or ei t her of f i ce or c l assr oom spaces r egar dl ess of space t ype) or VOC cont ent r equi r ement s of SCAQMD Rul e 1168. Pr ovi de cur r ent pr oduct cer t i f i cat i on document at i on f r om cer t i f i cat i on body.

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1. 4 ENVI RONMENTAL CONDI TI ONS

Appl y seal ant when t he ambi ent t emper at ur e i s bet ween 40 and 90 degr ees F.

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1. 5 DELI VERY AND STORAGE

Del i ver mat er i al s t o t he j obsi t e i n unopened manuf act ur er s ' seal ed shi ppi ng cont ai ner s, wi t h br and name, dat e of manuf act ur e, [ color, ] and mat er i al desi gnat i on c l ear l y mar ked t her eon. Label el ast omer i c seal ant cont ai ner s t o i dent i f y t ype, c l ass, gr ade, and use. Handl e and st or e mat er i al s i n

SECTI ON 07 92 00 Page 2 accor dance wi t h manuf act ur er ' s pr i nt ed i nst r uct i ons. Pr event exposur e t o f or ei gn mat er i al s or subj ect i on t o sust ai ned t emper at ur es exceedi ng 90 degr ees F or l ower t han 0 degr ees F. Keep mat er i al s and cont ai ner s c l osed and separ at ed f r om absor pt i ve mat er i al s such as wood and i nsul at i on.

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1. 6 QUALI TY ASSURANCE

1. 6. 1 Compat i bi l i t y wi t h Subst r at e

Ver i f y t hat each seal ant i s compat i bl e f or use wi t h each j oi nt subst r at e i n accor dance wi t h seal ant manuf act ur er ' s pr i nt ed r ecommendat i ons f or each application.

1. 6. 2 Joi nt Tol er ance

Pr ovi de j oi nt t ol er ances i n accor dance wi t h manuf act ur er ' s pr i nt ed instructions.

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1. 6. 3 Mock-Up

Pr ovi de a mock- up of each t ype of seal ant usi ng mat er i al s, col or s, and t echni ques appr oved f or use on t he pr oj ect . Appr oved mock- ups may be i ncor por at ed i nt o t he Wor k.

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1. 6. 3 Adhesion

Pr ovi de i n accor dance wi t h ASTM C1193 or ASTM C1521.

PART 2 PRODUCTS

2. 1 PRODUCT SUSTAI NABI LI TY CRI TERI A

For pr oduct s i n t hi s sect i on, wher e appl i cabl e and t o ext ent al l owed by per f or mance cr i t er i a, pr ovi de and document t he f ol l owi ng:

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2. 1. 1 Reduce Vol at i l e Or gani c Compounds ( VOC) ( Low- Emi t t i ng Mat er i al s) f or Products

Reduced VOC cont ent i s i dent i f i ed f or some pr oduct s i n t hi s sect i on;

pr ovi de document at i on i n accor dance wi t h Sect i on 01 33 29 SUSTAI NABI LI TY REPORTI NG par agr aph REDUCE VOLATI LE ORGANI C COMPOUNDS ( VOC) ( LOW- EMI TTI NG MATERI ALS) . Ot her pr oduct s l i s t ed i n t hi s sect i on may be avai l abl e wi t h r educed VOC cont ent ; i dent i f y t hose pr oduct s t hat meet pr oj ect r equi r ement s f or r educed VOC cont ent , and pr ovi de document at i on i n accor dance wi t h Sect i on 01 33 29 SUSTAI NABI LI TY REPORTI NG par agr aph REDUCE VOLATI LE ORGANI C

COMPOUNDS ( VOC) ( LOW- EMI TTI NG MATERI ALS) .

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2. 2 SEALANTS

Pr ovi de seal ant pr oduct s t hat have been t est ed, f ound sui t abl e, and document ed as such by t he manuf act ur er f or t he par t i cul ar subst r at es t o whi ch t hey wi l l be appl i ed.

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2. 2. 1 I nt er i or Seal ant s

Provide [ ASTM C834] [ ASTM C920, Type S or M, Gr ade NS, Cl ass 12. 5, Use NT] .

Pr ovi de cer t i f i cat i on of i ndoor ai r qual i t y f or i nt er i or seal ant s.

Locat i on( s) and col or ( s) of seal ant f or t he f ol l owi ng. Not e, col or " as sel ect ed" r ef er s t o manuf act ur er ' s f ul l r ange of col or opt i ons

LOCATION COLOR

a. Smal l voi ds bet ween wal l s or par t i t i ons and adj acent l ocker s, casework, shel v i ng, door f r ames, bui l t - i n or sur f ace mount ed equi pment and f i xt ur es, and si mi l ar i t ems.

[ As sel ect ed] [ Gr ay] [ Whi t e] [_____] Match wal l col or

b. Per i met er of f r ames at door s, wi ndows, and access panel s whi ch adj oi n exposed i nt er i or concr et e and masonr y sur f aces.

c. Joi nt s of i nt er i or masonr y wal l s and par t i t i ons whi ch adj oi n col umns, pi l ast er s, concr et e wal l s, and ext er i or wal l s unl ess ot her wi se det ai l ed.

db. Joi nt s bet ween edge member s f or acoust i cal t i l e and adj oi ni ng ver t i cal sur f aces.

[_____] Match wal l col or ec . I nt er i or l ocat i ons, not ot her wi se i ndi cat ed or speci f i ed, wher e smal l voi ds exi st bet ween mat er i al s speci f i ed t o be pai nt ed.

[_____] Match wal l col or f . Joi nt s bet ween bat ht ubs and cer ami c t i l e; j oi nt s bet ween shower r ecept or s and cer ami c t i l e; j oi nt s f or med wher e non- pl anar t i l e sur f aces meet .

g. Joi nt s f or med bet ween t i l e f l oor s and t i l e base cove; j oi nt s bet ween t i l e and di ssi mi l ar mat er i al s; j oi nt s occur r i ng wher e subst r at es change.

h. Behi nd escut cheon pl at es at val ve pi pe penet r at i ons and shower heads i n shower s.

i . [ _____] [_____]

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2. 2. 2 Ext er i or Seal ant s

For j oi nt s i n ver t i cal sur f aces, pr ovi de ASTM C920, Type S or M, Gr ade NS, Cl ass 25, Use NT. For j oi nt s i n hor i zont al sur f aces, pr ovi de ASTM C920, Type S or M, Gr ade P, Cl ass 25, Use T. Pr ovi de l ocat i on( s) and col or ( s) of seal ant as f ol l ows. Not e, col or " as sel ect ed" r ef er s t o manuf act ur er ' s f ul l r ange of col or opt i ons:

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LOCATION COLOR

a. Joi nt s and r ecesses f or med wher e f r ames and subsi l l s of windows, door s, l ouver s, and vent s adj oi n masonr y, concr et e, metal wal l panel s or met al f r ames. Use seal ant at bot h ext er i or and i nt er i or sur f aces of ext er i or wal l penet r at i ons.

[ Mat ch adj acent sur f ace col or ] [ As sel ect ed] [ Gr ay] [ Whi t e] [_____] Surrey Beige

b. Joi nt s bet ween new and exi st i ng ext er i or masonr y wal l s.

c. Masonr y j oi nt s wher e shel f angl es occur . [_____]

d. Joi nt s i n wash sur f aces of st onewor k. [_____]

e. Expansi on and cont r ol j oi nt s. [_____] f . I nt er i or f ace of expansi on j oi nt s i n ext er i or concr et e or masonr y wal l s wher e met al expansi on j oi nt cover s ar e not required.

gb. Voi ds wher e i t ems pass t hr ough ext er i or wal l s.

[_____] Surrey Beige

h. Met al r egl et s, wher e f l ashi ng i s i nser t ed i nt o masonr y j oi nt s, and wher e f l ashi ng i s penet r at ed by copi ng dowel s.

i c . Met al - t o- met al j oi nt s wher e seal ant i s i ndi cat ed or speci f i ed.

[_____] Surrey Beige j . Joi nt s bet ween ends of gr avel st ops, f asci ae, copi ngs, and adj acent wal l s.

k. [ _____] [_____]

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2. 2. 3 Fl oor Joi nt Seal ant s

ASTM C920, Type S or M, Gr ade P, Cl ass 25, Use T. Pr ovi de cer t i f i cat i on of i ndoor ai r qual i t y f or i nt er i or f l oor j oi nt seal ant s. Pr ovi de l ocat i on( s) and col or ( s) of seal ant as f ol l ows. Not e, col or " as sel ect ed" r ef er s t o manuf act ur er ' s f ul l r ange of col or opt i ons:

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LOCATION COLOR

a. Seat s of met al t hr eshol ds f or ext er i or doors.

[ As sel ect ed] [ Gray ] [ Whi t e] [ _____

b. Cont r ol and expansi on j oi nt s i n f l oor s, s l abs . , cer ami c t i l e, and wal kways.

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2. 2. 4 Acoust i cal Seal ant s

[ _____] Rubber or pol ymer based acoust i cal seal ant i n accor dance wi t h ASTM C919 t o have a f l ame spr ead of 25 or l ess and a smoke devel oped r at i ng of 50 or l ess when t est ed i n accor dance wi t h ASTM E84. Pr ovi de non- st ai ni ng acoust i cal seal ant wi t h a consi st ency of 250 t o 310 when t est ed i n accor dance wi t h ASTM D217. Acoust i cal seal ant must r emai n f l exi bl e and adhesi ve af t er 500 hour s of accel er at ed weat her i ng as speci f i ed i n ASTM C734. Pr ovi de cer t i f i cat i on of i ndoor ai r qual i t y f or i nt er i or acoust i cal seal ant s.

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2. 2. 4 Pr ef or med Seal ant s

Pr ovi de pr ef or med seal ant s of pol ybut y l ene or i sopr ene- but y l ene based pr essur e sensi t i ve weat her r esi st ant t ape or bead seal ant s capabl e of seal i ng out moi st ur e, ai r and dust when i nst al l ed as r ecommended by t he manuf act ur er . At t emper at ur es f r om mi nus 30 t o pl us 160 degr ees F, seal ant s must be non- bl eedi ng and have no l oss of adhesi on.

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2. 2. 4. 1 Tape

[ _____] Tape seal ant : Pr ovi de cr oss sect i on di mensi ons of [ _____] .

2. 2. 4. 2 Bead

[ _____] Bead seal ant : Pr ovi de cr oss sect i on di mensi ons of [ _____] .

2. 2. 4. 3 Foam St r i p

Pr ovi de [ _____] f oam st r i p of pol yur et hane f oam wi t h cr oss sect i on di mensi ons of [ _____] . Pr ovi de f oam st r i p capabl e of seal i ng out moi st ur e, ai r , and dust when i nst al l ed and compr essed i n accor dance wi t h manuf act ur er ' s pr i nt ed i nst r uct i ons. Ser vi ce t emper at ur e must be mi nus 40 t o pl us 275 degr ees F. Fur ni sh unt r eat ed st r i ps wi t h adhesi ve t o hol d t hem i n pl ace. Do not al l ow adhesi ve t o st ai n or bl eed ont o adj acent f i ni shes.

Sat ur at e t r eat ed st r i ps wi t h but y l ene wat er pr oof i ng or i mpr egnat e wi t h asphalt.

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2. 3 PRIMERS

Non- st ai ni ng, qui ck dr y i ng t ype and consi st ency as r ecommended by t he

SECTI ON 07 92 00 Page 6 seal ant manuf act ur er f or t he par t i cul ar appl i cat i on. Pr ovi de pr i mer s f or i nt er i or appl i cat i ons t hat meet t he i ndoor ai r qual i t y r equi r ement s of t he par agr aph SEALANTS above.

2. 4 BOND BREAKERS

Type and consi st ency as r ecommended by t he seal ant manuf act ur er t o pr event adhesi on of t he seal ant t o t he backi ng or t o t he bot t om of t he j oi nt .

Pr ovi de bond br eaker s f or i nt er i or appl i cat i ons t hat meet t he i ndoor ai r qual i t y r equi r ement s of t he par agr aph SEALANTS above.

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2. 5 BACKSTOPS

Pr ovi de gl ass f i ber r ovi ng, neopr ene, but y l , pol yur et hane, or pol yet hyl ene f oams f r ee f r om oi l or ot her st ai ni ng el ement s as r ecommended by seal ant manuf act ur er . Pr ovi de 25 t o 33 per cent over si zed backi ng f or c l osed cel l and 40 t o 50 per cent over si zed backi ng f or open cel l mat er i al , unl ess ot her wi se i ndi cat ed. Pr ovi de backst op mat er i al t hat i s compat i bl e wi t h seal ant . Do not use oakum[ , [ _____] ] or ot her t ypes of absor pt i ve mat er i al s as backst ops.

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2. 5. 1 Rubber

Pr ovi de i n accor dance wi t h ASTM D1056, [ Type 1, open cel l , ] [ or ] [ Type 2, c l osed cel l , ] Cl ass [ A] [ B] [ D] , Gr ade [ _____] , [ r ound] [ _____] cr oss sect i on f or [ _____] cel l ul ar r ubber sponge backi ng.

2. 5. 2 PVC

Pr ovi de i n accor dance wi t h ASTM D1667, Gr ade [ VO 12] [ _____] , open- cel l f oam, [ r ound] [ _____] cr oss sect i on f or [ _____] pol yvi nyl chl or i de ( PVC) backing.

2. 5. 3 Synt het i c Rubber

Pr ovi de i n accor dance wi t h ASTM C509, Opt i on [ I ] [ I I ] , Type [ I ] [ I I ] pr ef or med [ r ods] [ or ] [ t ubes] f or [ _____] synt het i c r ubber backi ng.

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2. 5. 1 Neoprene

Pr ovi de i n accor dance wi t h ASTM D1056, [ c l osed cel l expanded neopr ene cor d Type 2, Cl ass C, Gr ade [ 2C2] [ _____] ] [ open cel l neopr ene sponge Type 1, Cl ass C, Gr ade [ 1C3] [ _____] ] f or [_____] neopr ene backi ng.

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2. 5. 2 But y l Rubber Based

Pr ovi de i n accor dance wi t h ASTM C1311, f r om a s i ngl e component , wi t h sol vent r el ease. col or [ as sel ect ed f r om manuf act ur er ' s f ul l r ange of col or choi ces] [ _____] .

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2. 5. 3 Si l i cone Rubber Base

Pr ovi de i n accor dance wi t h ASTM C920, f r om a s i ngl e component , wi t h sol vent r el ease, Non- sag, Type [ _____] , Gr ade [ _____] , Cl ass [ 25] [ _____] . Col or [ as sel ect ed f r om manuf act ur er ' s f ul l r ange of col or choi ces] [ _____] .

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2. 6 CAULKING

For i nt er i or use and onl y wher e t her e i s l i t t l e or no ant i c i pat ed j oi nt movement . Pr ovi de i n accor dance wi t h ASTM D2452 and ASTM D2453, Type [_____] 1, f or [_____] oi l and r esi n- based caul k i ng. Pr ovi de cer t i f i cat i on of i ndoor ai r qual i t y f or i nt er i or caul k i ng.

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2. 7 CLEANI NG SOLVENTS

Pr ovi de t ype( s) r ecommended by t he seal ant manuf act ur er and i n accor dance wi t h envi r onment al r equi r ement s her ei n. [ Pr ot ect adj acent al umi num and br onze sur f aces f r om sol vent s] . Pr ovi de sol vent s f or i nt er i or appl i cat i ons t hat meet t he i ndoor ai r qual i t y r equi r ement s of t he par agr aph SEALANTS above.

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PART 3 EXECUTI ON

3. 1 FI ELD QUALI TY CONTROL

Per f or m a f i el d adhesi on t est i n accor dance wi t h manuf act ur er ' s i nst r uct i ons and ASTM C1193, Met hod A or ASTM C1521, Met hod A, Tai l Pr ocedur e. Remove seal ant s t hat f ai l adhesi on t est i ng; c l ean subst r at es, r eappl y seal ant s, and r e- t est . Test seal ant s adj acent t o f ai l ed seal ant s.

Submi t f i el d adhesi on t est r epor t i ndi cat i ng t est s, l ocat i ons, dat es, r esul t s, and r emedi al act i ons t aken.

3. 2 SURFACE PREPARATI ON

Pr epar e sur f aces accor di ng t o manuf act ur er ' s pr i nt ed i nst al l at i on i nst r uct i ons. Cl ean sur f aces f r om di r t , f r ost , moi st ur e, gr ease, oi l , wax, l acquer , pai nt , or ot her f or ei gn mat t er t hat woul d dest r oy or i mpai r adhesi on. Remove oi l and gr ease wi t h sol vent ; t hor oughl y r emove sol vent s pr i or t o seal ant i nst al l at i on. Wi pe sur f aces dr y wi t h c l ean cl ot hs. When r eseal i ng an exi st i ng j oi nt , r emove exi st i ng caul k or seal ant pr i or t o appl y i ng new seal ant . For sur f ace t ypes not l i s t ed bel ow, pr ovi de i n accor dance wi t h seal ant manuf act ur er ' s pr i nt ed i nst r uct i ons f or each speci f i c sur f ace.

3. 2. 1 St eel Sur f aces

Remove l oose mi l l scal e by sandbl ast i ng or , i f sandbl ast i ng i s i mpr act i cal or woul d damage f i ni shed wor k, scr api ng and wi r e br ushi ng. Remove pr ot ect i ve coat i ngs by sandbl ast i ng or usi ng a r es i due f r ee sol vent .

Remove r esul t i ng debr i s and sol vent r esi due pr i or t o seal ant i nst al l at i on.

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3. 2. 2 Al umi num or Br onze Sur f aces

Remove t empor ar y pr ot ect i ve coat i ngs f r om sur f aces t hat wi l l be i n cont act wi t h seal ant . When maski ng t ape i s used as a pr ot ect i ve coat i ng, r emove t ape and any r esi dual adhesi ve pr i or t o seal ant appl i cat i on. For r emovi ng pr ot ect i ve coat i ngs and f i nal c l eani ng, use non- st ai ni ng sol vent s r ecommended by t he manuf act ur er of t he i t em( s) cont ai ni ng al umi num or br onze sur f aces.

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3. 2. 2 Concrete and Masonr y Sur f aces

Wher e sur f aces have been t r eat ed wi t h cur i ng compounds, oi l , or ot her such mat er i al s, r emove mat er i al s by sandbl ast i ng or wi r e br ushi ng. Remove l ai t ance, ef f l or escence and l oose mor t ar f r om t he j oi nt cavi t y. Remove r esul t i ng debr i s pr i or t o seal ant i nst al l at i on.

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3. 2. 3 Wood Sur f aces

Ensur e wood sur f aces t hat wi l l be i n cont act wi t h seal ant s ar e f r ee of spl i nt er s, sawdust and ot her l oose par t i c l es.

[ 3. 2. 4 Removi ng Exi st i ng Hazar dous Seal ant s

For seal ant s appl i ed pr i or t o 1979, or t hat have been t est ed and f ound t o cont ai n pol ychl or i nat ed bi phenyl s ( PCBs) , r emove and di spose of t hese seal ant s i n accor dance wi t h Sect i on 02 84 33 REMOVAL AND DI SPOSAL OF POLYCHLORI NATED BI PHENYLS ( PCBs) .

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3. 3 SEALANT PREPARATI ON

Do not add l i qui ds, sol vent s, or powder s t o seal ant s. Mi x mul t i component el ast omer i c seal ant s i n accor dance wi t h manuf act ur er ' s pr i nt ed i nst r uct i ons.

3. 4 APPLICATION

3. 4. 1 Joi nt Wi dt h- To- Dept h Rat i os

Accept abl e Rat i os:

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JOI NT WI DTH JOI NT DEPTH

Minimum Maximum

For met al , gl ass, or ot her nonpor ous sur f aces:

1/ 4 i nch ( mi ni mum) 1/ 4 i nch 1/ 4 i nch

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JOI NT WI DTH JOI NT DEPTH

Minimum Maximum over 1/ 4 i nch 1/ 2 of wi dt h Equal t o wi dt h

For wood, concr et e: , masonr y, st one, or [ _____] :

1/ 4 i nch ( mi ni mum) 1/ 4 i nch 1/ 4 i nch over 1/ 4 i nch t o 1/ 2 i nch 1/ 4 i nch Equal t o wi dt h over 1/ 2 i nch t o 1 i nch 1/ 2 i nch 5/ 8 i nch

Over 1 i nch prohibited

Unaccept abl e Rat i os: Wher e j oi nt s of accept abl e wi dt h- t o- dept h r at i os have not been pr ovi ded, c l ean out j oi nt s t o accept abl e dept hs and gr i nd or cut t o accept abl e wi dt hs wi t hout damage t o t he adj oi ni ng wor k. Gr i ndi ng i s pr ohi bi t ed at met al sur f aces.

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3. 4. 2 Unaccept abl e Seal ant Use

Do not i nst al l seal ant s i n l i eu of ot her r equi r ed bui l di ng encl osur e weat her pr oof i ng component s such as f l ashi ng, dr ai nage component s, and j oi nt c l osur e accessor i es, or t o c l ose gaps bet ween wal l s, f l oor s, r oof s, wi ndows, and door s, t hat exceed accept abl e i nst al l at i on t ol er ances. Remove seal ant s t hat have been used i n an unaccept abl e manner and cor r ect bui l di ng encl osur e def i c i enci es t o compl y wi t h cont r act document s r equi r ement s.

3. 4. 3 Maski ng Tape

Pl ace maski ng t ape on t he f i ni shed sur f ace on one or bot h s i des of j oi nt cavi t i es t o pr ot ect adj acent f i ni shed sur f aces f r om pr i mer or seal ant smear s. Remove maski ng t ape wi t hi n 10 mi nut es of j oi nt f i l l i ng and t ool i ng.

3. 4. 4 Backstops

Pr ovi de backst ops dr y and f r ee of t ear s or hol es. Ti ght l y pack t he back or bot t om of j oi nt cavi t i es wi t h backst op mat er i al t o pr ovi de j oi nt s i n speci f i ed dept hs. Pr ovi de backst ops wher e i ndi cat ed and wher e backst ops ar e not i ndi cat ed but j oi nt cavi t i es exceed t he accept abl e maxi mum dept hs speci f i ed i n JOI NT WI DTH- TO- DEPTH RATI OS Tabl e.

3. 4. 5 Primer

Cl ean out l oose par t i c l es f r om j oi nt s i mmedi at el y pr i or t o appl i cat i on of .

Appl y pr i mer t o j oi nt s i n concr et e masonr y uni t s, wood, and ot her por ous sur f aces i n accor dance wi t h seal ant manuf act ur er ' s pr i nt ed i nst r uct i ons.

Do not appl y pr i mer t o exposed f i ni shed sur f aces.

3. 4. 6 Bond Br eaker

Pr ovi de bond br eaker s t o sur f aces not i nt ended t o bond i n accor dance wi t h, seal ant manuf act ur er ' s pr i nt ed i nst r uct i ons f or each t ype of sur f ace and

SECTI ON 07 92 00 Page 10 seal ant combi nat i on speci f i ed.

3. 4. 7 Sealants

Pr ovi de seal ant s compat i bl e wi t h t he mat er i al ( s) t o whi ch t hey ar e appl i ed.

Do not use a seal ant t hat has exceeded i t s shel f l i f e or has j el l ed and cannot be di schar ged i n a cont i nuous f l ow f r om t he seal ant gun. Appl y seal ant s i n accor dance wi t h t he manuf act ur er ' s pr i nt ed i nst r uct i ons wi t h a gun havi ng a nozzl e t hat f i t s t he j oi nt wi dt h. Wor k seal ant i nt o j oi nt s so as t o f i l l t he j oi nt s sol i dl y wi t hout ai r pocket s. Tool seal ant af t er appl i cat i on t o ensur e adhesi on. Appl y seal ant uni f or ml y smoot h and f r ee of wr i nkl es. Upon compl et i on of seal ant appl i cat i on, r oughen par t i al l y f i l l ed or unf i l l ed j oi nt s, appl y addi t i onal seal ant , and t ool smoot h as speci f i ed. Appl y seal er over seal ant s i n accor dance wi t h t he seal ant manuf act ur er ' s pr i nt ed i nst r uct i ons.

3. 5 PROTECTI ON AND CLEANI NG

3. 5. 1 Protection

Pr ot ect ar eas adj acent t o j oi nt s f r om seal ant smear s. Maski ng t ape may be used f or t hi s pur pose i f r emoved 5 t o 10 mi nut es af t er t he j oi nt i s f i l l ed and no r esi dual t ape mar ks r emai n.

3. 5. 2 Fi nal Cl eani ng

Upon compl et i on of seal ant appl i cat i on, r emove r emai ni ng smear s and st ai ns and l eave t he wor k i n a c l ean and neat condi t i on.

a. Masonr y and Ot her Por ous Sur f aces: I mmedi at el y r emove f r esh seal ant t hat has been smear ed on adj acent masonr y, r ub c l ean wi t h a sol vent , and r emove sol vent r esi due, i n accor dance wi t h seal ant manuf act ur er ' s pr i nt ed i nst r uct i ons. Al l ow excess seal ant t o cur e f or 24 hour t hen r emove by wi r e br ushi ng or sandi ng. Remove r esul t i ng debr i s.

b. Met al and Ot her Non- Por ous Sur f aces: Remove excess seal ant wi t h a sol vent moi st ened cl ot h. Remove sol vent r esi due i n accor dance wi t h sol vent manuf act ur er ' s pr i nt ed i nst r uct i ons.

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