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1、ExteriorInsulationFinishingSystemExteriorInsulationandFinishingSystem(EIFS)isatypeofbuildingexteriorwallcladdingsystemthatprovidesexteriorwallswithaninsulatedfinishedsurfaceandwaterproofinginanintegratedcompositematerialsystem.Contents·1Terminology·2HowEI
2、FSisinstalled·3CompositionandtypesofEIFS·4HistoryofEIFS·5Legalissues·6MarketingofEIFSandTheEIFSIndustry·7EIFSArchitecturalDetails·8ReferencesTerminologyAlthoughoftencalled"syntheticstucco",EIFSisnotstucco.Traditionalstucco,otherwiseknownasPortlandCementPl
3、aster,isacenturies-oldnon-insulatingmaterial.Stuccoconsistsofsand,PortlandCement,andwater,andisahard,dense,thick,non-insulatingmaterial.EIFSisalightweightsyntheticwallcladdingthatincludesfoamplasticinsulationandthinsyntheticcoatings.Therearealsospecialtys
4、tuccosthatusesyntheticmaterialsbutnoinsulation,andthesearealsonotEIFSeither.Acommonexampleiswhatiscalledone-coatstucco,whichisathick,syntheticstuccoappliedinasinglelayer(traditionalstuccoisappliedin3layers).ThereisalsoanEIFS-likeproductcalledaDirect-Appli
5、edFinishSystem(orDAFS),whichisessentiallyanEIFSbutwithouttheinsulation,andhasquitedifferentcharacteristics.EIFSareproprietarysystemsofaparticularEIFSproducerandconsistofspecificcomponents.EIFSarenotgenericproductsmadefromcommonseparatematerials.Tofunction
6、properly,EIFSneedstobearchitecturallydesignedandinstalledasasystem.ThereareanumberofversionsofEIFS.ThemostbasicandcommonEIFSiscalledabarrierEIFS(alsoknownasatraditionalorconventionalEIFS).AnothertypeiscalledanEIFSwithDrainage,whichisabarrierEIFStowhichawa
7、terdrainagecapabilityhasbeenadded.AbasicEIFSincludesonlytheinsulationandEIFSmaterials(coatings,adhesives,etc.).OthertypesofEIFSmayalsoincludeplasticedgetrim,water-resistivebarriers,adrainagecavity,andotheraccessories.Thetechnicaldefinitionof"anEIFS"doesno
8、tincludewallframing,sheathing,flashings,caulking,waterbarriers,windows,doors,andotherwallcomponents.However,asofrecently,architectshavebegunspecifyingflashings,sealants,andwiringfasteners(suchasViperstrap)asbeingapa
