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1、ConsiderationsintheDesignofCladdingSystemswithContinuousExteriorThermalInsulationMarkJ.Klos,SeniorR&DEngineer,CENTRIAABSTRACTThispaperaddressesspecificandseldomdiscusseddetailsofcladdingsystemsandtheimpactcontinuousexteriorinsulationandothercommonbuildingpracticestodayhas
2、hadontheirdesign.Theprimaryissueishowthedesiretoincreaseanyoneaspectinthedesignofthebuildingenvelope,inthiscasethermalinsulation,impactstheperformanceofalltheothercomponentsofthedesign–namely,theweather-resistiveelement,theaircontrolelement,thevaporcontrolelementandthesup
3、portelement.AlargeamountofthediscussionconcernswhatIbelievetobemostneededbythedesignteamtoday–guidelinesforcladdingsupportorsub-framingdesign.Topicsinclude:1.Properorientationofsub-framing2.Providingtheproperloadpath3.Howcladdingsystemsaccommodatebuildingmovement4.Theplac
4、ementtolerancesofprimarystructurematerialsandtheneedforgirtspaceByaddressoftheseissues,theauthorhopestore-establishthefundamentalsneededinanygoodcladdingdesignandspurdevelopmentinareaswherethepresentdesignislacking.KEYWORDS:cladding,supportframing,deflection,continuousins
5、ulation1.IntroductionCreatingaproperbuildingenvelopeisnoteasy;yetallweneedtoworkwithisfivecomponents:1.Weather-resistiveelement(cladding,et.al.)2.Aircontrolelement3.Supportelement(s)(wallstudframing,et.al.)4.Thermalcontrolelement(s)5.Vaporcontrolelement(s)(includingtheint
6、eriorfinish)Withonlyfivecomponentstoworkwith,whatcouldgowrong?Oftenmistakesarisewhenweassemblethecomponentstomeetindividualrequirementsandnotconsidertheirassemblageasasystem:Weaddinsulationtoretardtheflowofheat,weaddanairbarriertocontrolunwantedairleakageandweusethesuppor
7、tstoholdtheothercomponents[1]inplaceagainstexternalforces.Wethenplacetheweather-resistiveelementtotheexteriortoprotectalltheothercomponentsandfinallyweaddthevaporcontrolelementtoprotecttheothercomponentsfrompossibledamagecausedbytheinsulation.Wallsdesignedinthispiece-wise
8、fashioncanhaveproblems;yetthatispreciselyhowtheyareoftenspecifiedbybuildingandenergycodes.Thebui
