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 Style,PerformanceandValue
Whenselectingtherightsidingforyourhome,youwillwanttotakeinto considerationthearchitecturalstylingofyourhome,environmental conditionssuchaswindandhailthatyoursidingwillneedtoendure,and yourbudget.

Gauge
Thisisthethicknessofthepanel.Thehigherthegauge(orpanel thickness),thebetterthepanel.Thickerpanelsoffergreaterimpactand weatherresistance.Thickerpanelsalsoaremorerigidsotheywillhang straighterandflatteragainstthewallforamoreattractivefinished installation.OwensCorningofferssidingingaugesfromeconomical.040"to premium.048".

Grain
Vinyl sidingismoldedwithdifferentwoodgrainstoofferdifferentexterior looks.Smoothgrainstendtoworkwellwithhomeswithmoretraditional designs,butalsoworkwellwithcontemporaryarchitecturalstyles.More pronouncedgrainstendtogivehomesamorerusticappearance.





Profiles
Similarto thegrain,vinylsidingsaremadewithdifferentprofilestocreate differentexteriorlooks.Whetheryou’relookingforatraditionalclapboard style,thebeveledlookofadutchlappanel,ortheold-fashionedcharmofa beadedpanel,you’llfinditintheOwensCorningline.Tolearnmoreabout howdifferentsidingprofilesinfluenceexteriordesign,goto  

R"-valueofFullback®

Asnewbuildingandinsulationmaterialshaveenteredthe market,confusionoverthenatureandmeaningof"R"-valuehasraised questionsamongbuildingprofessionalsandconsumersalike.Whatexactlyis "R"-value?Isitaneffectiveandobjectivemeasureofthethermal performanceofaninsulationproductorconstructionsystem?Andhowshould themarketplaceuseittocomparethebenefitsofoneinsulationmaterial overanother?

Defining"R"-value

Duringthe1970s,asdemandforqualitybuilding insulationsoared,anoilcrisissentheatingandcoolingcostsskyward. Withmanynewproductsonthemarket–andwithsomanyconflictingclaims pertainingtotheinsulatingabilitiesofthoseproducts–theFederalTrade Commission,withtheparticipationandsupportoftheinsulationindustry, createdanobjectivemethodforreportingtheperformanceofresidential insulationmaterials.Thismethodiscalledthe"R"-valueRule.

TheRuleprovidesrequirementsforproductlabeling ("R"-value)andadvertising,andmandatesspecificASTMmethodsforthermal testing.The"R"-valueRulehasbeenhelpfulincomparingdifferentbrands ofthesametypeofinsulatingmaterial.However,asmoresophisticated materialsandhighertechnologyconstructionsystemsareintroducedintothe buildingindustry,wefindthatthe"R"-valueofamaterialdoesnottell thewholestory.

"R"-valueisbasedonamathematicaltermknownas "R"-factor.Theterm"R"-valuewasdevelopedtorepresenttheabilityofan insulationmaterialtorestrictheatflow.Itisdeterminedbyplacingtest specimensbetweentwoplatesinalaboratoryapparatusand heat-flowthroughtheinsulation.Thetestspecimenusuallyconsistsofa squarefootofmaterialexactlyoneinchthickwhosesurfaceshavea temperaturedifferentialof1degreeFahrenheit.Thethermalconductivity (k)ofamaterialisexpressedastherateofheatflowinBTUsperhour.

Thermalresistance(R)ofamaterialisitsresistanceto heatflow,and"R"-valueisexpressedasthereciprocalofthematerial’s thermalconductivity.Simplyput,thegreaterthe"R"-valuethebetterthe insulation.

WhyStandard"R"-valueTestingisInsufficient

FullbackcontouredEPSfoamproductscannotbetested underASTMC177or518,whichareprescribedfortestingonlyflat (consistentthickness)sheets.Fullbackmustbetestedusingthe"Guarded HotBoxTest"outlinedinASTMC236.Thissametestmethodisusedtotest windows,etc.,wherevariousthicknessesandcomponentsareinvolved.

Thesetestscanonlybeconductedbyagovernment approved,thirdparty,testinglaboratory.ProgressiveusesATI,locatedin York,Pennsylvania.

GuardedHotBoxTest

 

Bywayofexplanation,when"R"-valuesare required,ATI,withProgressive’sinput,buildsaspecificbasewallto depictanewconstructionorresidingwallandmountsitinan8'x8'test fixture.Thefixtureisclosedandsealed.Aheatsourceislocatedonthe inputsideofthewallandacoolingchamberislocatedontheoutputside ofthewalltocontroltemperature.

Priortosealingthefixture,thelab personnelaffixalargenumberofthermocouplestodesignatedlocationson bothsidesofthetestwall.Thesethermocouplesareusedtomeasurethe surfacetemperatureintheirimmediatearea.Thisandotherbitsof informationaretransmittedintoacomputer.Itreadsthedata,storesit andlaterprocessesitthroughaprogramwhichmeasuresthewall’s resistancetoheatflow.

Theheatingandcoolingsystemsarethen turnedon.Thecoldsideisbroughtto0°Fandthewarmsideisbroughtto 70°F.Thesetemperaturesareallowedtostabilizeforaperiodof twenty-four(24)hours.Thecomputerprogramisthenstartedandthe measurementofenergyinputismeasuredagainstthetimetheheattakesto passthroughthewallandbemeasuredontheoutputside.

Thistestproducesan"R"-valueforthebase wall.Forexplanationpurposes,let’ssaythatthewallproducesan "R"-valueof5.0.Thefixtureisopenedontheinputside,thethermocouples areremovedandourFullbackproductisinstalledwiththerespectivevinyl siding,exactlyasitwouldbeonthehouse.Thermocouplesareonceagain affixedtotheinputsideandthefixtureisclosedandsealed.

Thetemperaturestabilizationprocess referredtoaboveisagaincompleted.Thetestisthenrunonthe combinationoftheoldwallandthenewproduct.Forexample,let’ssaythat the"R"-valueproducedfromthistestisanR-9.Inordertodeterminethe system"R"-valueyousimplysubtractthebasewall5.0fromthecomposite wallof9.0andyouhaveasystem"R"-valueof4.0.

Thesystem"R"-valuetakesinto considerationthedifferencesinthicknessofthefoamandgivesyouan averagewhichisfullyacceptedbytheinsulationindustryandthe government.

TheProblemwithSomeOtherFoamInsulatingMaterials

Thereareotherfactorsthataffectthe performanceofinsulationproductsaftertheyareinstalledinabuilding, includingthermaldrift.

Dependingontheinsulationmaterialused, the"R"-valuecanslowlybereducedovertimeasthematerialages.Some foamplasticinsulationmaterialsuseblowingagentsthathaveahigh resistancetoheatflow,causingtheinsulationtohaveanabnormallyhigh "R"-valueatthetimeofmanufacture.Itisnowknownthattheseblowing agentsdiffusethecellularstructureofthefoamuntilalevelof equilibriumisreachedmanyyearsafteritismanufactured.Asthehigh "R"-valuegasesdiffuseoutofthecellularstructure,theabilityofthe insulationtopreventthermalflowisreduced,losingupto30percentof itsoriginalinsulatingability.

Fullbackdoesnotusethesetypesofblowing agents;therefore,itsinsulationperformanceremainsstableoveritsentire life.

WallSystem"R"-value Whenthe"R"-valueRulewasinstituted,most homesandbuildingswereconstructedandinsulatedusingdimensionallumber, two-by-fours,andfiberglassinsulation.Toahome’sinsulation, generally,abuilderwouldhaveselectedafiberglassinsulationproduct thathadahigher"R"-value,buttodaywehavelearnedthatitisn’t necessarilythe"R"-valueoftheinsulationthatmakesthewallmore efficient.Itisacombinationofinsulationmaterials,constructiondetails andinstallationcarethatprovideultimatethermalperformance.

Todayweunderstandthattoinsulatethe spacebetweenthestudswithfiberglassisnotthesameasinsulatingan entireexteriorwall.Wemustconsiderthewallasasystem.Thelumber createsthermalbridgingandairinfiltrationwithinthewall.Nowweknow thatitisimportanttoinsulatetheentire"WallSystem"andnotjustthe areabetweentheframingmembers.

EnergyEfficiency Fullback®ThermalSupportSystems providethelong-termefficiencynowdemandedbytheconstructionindustry. Heatingandcoolingahomeaccountfor50to70percentoftheenergycosts experiencedintheaveragehome.Inmonetaryterms,theU.S.consumesalmost $40billioninairconditioningaloneaccordingtotheEPA.Thestable thermalperformanceofEPSinsulationresultsinheatingandcoolingsavings thataddupoverthelifeofthestructure.Inaddition,areductionof energyusealsohelpstoconservenonrenewablefuelsupplies.

Thedecreaseduseoffuelandenergy translatesintoreducedairpollution.TheEPAalsoreportsthathousehold electricityaccountsfor35percentofallU.S.emissionsofcarbon dioxides,75percentofsulfurdioxideand38percentofnitrogenoxides.By utilizingmoreenergyefficientmaterialsandproductsinourhomes,wecan reducetheamountofairpollution. *****************
Updated6/13/201010:38:10AM



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