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ESR-2642 I Most Widely Accepted and Trusled Page 3 of 5 <br />In attic" Ihe insulation may be spray-applied lo Ihe <br />underside ol roof sheathing or roof rafters, and/or vertical <br />surfaces prowded the assembly conforms to one o( the <br />assemblies descnbed in Table 2. In cravA spaces, the <br />insulalions m�y be spray-applied lo the underside of Floors <br />andlor vertical surfaces prowded �he assembly coniortns to <br />one of Ihe assemblies described in Table 2. Nfien an <br />intumescent coating is used, suriaces to be coated must <br />be tlry, dean, and free of dirt, loose debns and any other <br />substances lhat could inteAere with adheswn of the <br />coating. The intumescent coating must be apphed lo all <br />surfaces m accordance w�th the respedive coaUng <br />manufacturer's installation mslructions The coating must <br />be applied when ambient and subslrate lemperaWres eiz <br />above of 50°F (10°C). The insulations may be mstalled in <br />unvenled aflics as descnbed m this section m accordance <br />wdh IRC Sedion RBO6A. <br />4.4.3 Use on Attic Floors: The SPRAYTITE" (178 and <br />81206�, COMFORT FOAM" 178, and WALLTITE�° (US and <br />US-N) msulations may be installed in actordance vnth this <br />sedion and Tahle 2 at a marzimum Ihickness ol 9'la mches <br />(2J5 mm) betw�en and over the �oists m attic ffoor. The <br />insulation must be separatetl froin Ihe mtenor of lhe <br />building by an approved thertnal barner. The igmhon <br />barrier required in IBC SeIXion 2603.4.1 G and IRC Sedion <br />R316.5.3 may be omitted. . <br />4.5 Water-resislive Bartier: <br />The SPRAYTITE°� (178 and 81206), COMFORT FOAM� <br />178, antl WALLTITEA (US and US-N) insulations may be <br />used as Ihe waler-resislive barrier presc,�ibed in IBC <br />Sedion 7404 2 and IRC Sealon R703 2, when installed on <br />eztenor wails as described in this sedion. The msulalions <br />must be spray-appfied lo Ihe ezlerior side o( the shealhina, <br />masonry cr olher swtable eutenor wall subsirates to fortn a <br />continuous layer of 1 inch (25.A mm) minimum thickness <br />All consiruchon �oiMs and penetraLons must be sealed <br />wilh SPRAYTITE` (178 and 81206), COMFORT FOAMx <br />178, or WAI.LTITE� (US and US-N) msulaUon. <br />4.6 Two-hour Fire•resistance-rated Wall Assemblics <br />(Load•bcaring�: <br />SPRAYTIT[� 158, SPRAYTITE°� 87205 or COMFORT <br />FOAMf 158 may be installed on interior load-beanng two- <br />how firc-resistance-rated walls, provided ihe system is <br />ms�alled in accordance wilh the (ollowing <br />4.6.1 Wood Framing: Two mws on separate plales. <br />1 inches p6 mm) apart, of minimum 2-byd wood sWds <br />(No 2 Douglas fir) spaced a mazlmum of 16 mches <br />(406 mm) on center <br />4.6.2 Wall Finlsh: Base layer of S/n-thich (159 mm), <br />Typ� X gypsum wallboard is apphed honzontally and <br />laslened ro each ouler slde of a double row ol sluds vnth <br />Gd by t'l,�mdrlong (4A mm) coated nads, spaced 2 feet <br />(610 mm) on cenler. Face layer of'l�rinch�lhick (15 9 mm), <br />Typc X gypsum board is applied hori�onlally and faslened <br />to each outer side of studs over the 6ase layer wdh 8A by <br />2�Iq-inch�long (60 mm) coa�etl nails, spaced !3 �nches <br />(203 mm) on cenlers Gypsum wallboard joints must be <br />staggered 24 mches (51G mm) heN+een layers and on <br />opposde s�des of the wall. <br />4.6.3 Insulatlon: SPRAYTITE" 158, SPRl�YTITG`� 81205 <br />or GOMFOR7 FOAM� 158 is apphed in the stud cavities ol <br />bolh rows at a thickness o13 inches (76 mm) <br />4.7 Exterior Walls in Types I, II, III and IV <br />ConcVuction: <br />SPRAYTITE 81206 and WAI.I.TITE (US and US�N) may <br />be mstalled m or on exleno• wails of butldings ol Type I, II, <br />III and N ccr�slrudian comply�ng with I�C Seclion <br />2603 5and as descnbed in this sedwn. The maximum <br />Ihickness of the (oam plashc Is 3 inches (76 mm) when <br />ir,stalled on the vxtenor of the sheathmg or 3-'le mUes <br />(92.1 mm) when installed in stud cavdies The potenfial <br />heat o( SPRAYTITE'A 81206 a��d WALLTITE4' (US and US <br />N) spray-apphed msulations is 1961 Btu/ftI (223 MJIm') <br />per mch ot thickness. 7he wall assembly must be as <br />descnbed in Table 3 or 4. <br />5.0 CONDITIONS OF USE <br />The BASF Corporation spray-applied insulations descnhed <br />in �his report comply with, or are suitable altematives to <br />whal is specified iq lhose codes listed in Seclion 1.0 of <br />this report, sub�ed to the following conditions <br />5.1 The sprey-:.pplied insulations and the iMumescent <br />coaungs must be installed in accordance with the <br />manufacturer's published installation instruciions, this <br />evaluation report and the apphcable code The <br />Inslruclions within �his report govem if there are any <br />conflicts between the manulacturer's pubhshed <br />mstallation insWctions and this report. <br />5.2 The spray-applied msulations must be separated fiom <br />the intenor of the building by an approved iSminu�e <br />thermal bamer, as descnAed m Section 4.3, except <br />where installation 1s in an atlic or crawt space as <br />descnbed in Section 4 4 <br />5.3 The spray-applied insulaUons must nol exceed Ihe <br />thicknesses noted in Sedion 32, 4.3 4 4, 4.5. 4.6, or <br />4] as applicable. <br />5.4 The spray-applied insulations must be protected hom <br />.,, � .vea�her during appiication. <br />5.5 ilie spray-app6ed msulations musl be applied by <br />pmfessional spray polyurMhane foam installers <br />approved by BASF Corporation or by �he Spray <br />Polydrelhane Foam All�ance (SPFA) for the <br />installalion of spray polyurethane foam insulation <br />5.6 Installalion in fire-resistance�aled conslruction musl <br />be as desaibed m Sec6 • i 4.6 <br />5.7 Use of the msulauon in a�eas where the probabillty of <br />lermite infest2lion is 'very high' must be in <br />accordance vnth IBC SeCion 26038 or IRC Sedion <br />R318 4, as apphcable. <br />5.8 Jobstle certfication and labeling of Ihe msula6on must <br />comply rnih IRC Seclions N11014 and N1101 4.1 <br />and I[CC Sections 303 1.1 and 303.1 2 <br />5.9 VJhen used in or on ezterior walls of bwldings ol Type <br />1. II, III and IV construclion, the wa!I assembiy must <br />conlorm to Ihose descnbed in Section 47 <br />5.10 The po�yurethane foam plastic insulalwn components <br />are produced in Houston, Tezas Minn�apolis, <br />Mmnesota unAer a quahty cortrol program wilh <br />mxpections by Underwrders Laboralones Inc <br />(M 668) <br />6.0 EVIDENCE SUBMITTED <br />6J Dala in accordancc wilh Ihe ICGES �cceplance <br />Crilena lor Spray-apP��ed Foam Plastic Insulallon <br />(AC377), dated June ?011, includmg repoAs of tests <br />in accordanw vnth �lppcndix X of AC377. <br />6.2 Data m accordance vnth AS7M E 7 79 <br />6.3 Reports ol water vapor transmission tesis In <br />accprdancc with ASTM [ 96. <br />6A Reports ol aii leakaqe tesling in accortlance with <br />ASTM E 283 <br />6.5 Reports ol fire propagation charadenstics tests in <br />accordance vnlh NFPA 285 <br />6.6 Reporis ol polenlial heal ol foam plastics tests in <br />accordance wiUi NFPA 259 <br />