KiwaLtd.
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SCOPE
ThisAgrémentrelatestoSuperbead33+,areducedCO2emissions(CO2e)CavityWallInsulation(CWI)hereinaftertheSystem.TheSystemisforuseas injectedCWIandimprovesthethermalinsulationofexternalclosedconstructioncavitywallswithmasonryinnerandouterleaves(wheremasonryincludesclay andcalciumsilicatebricks,concreteblocksandnaturalandreconstitutedstoneblocks),masonrypartywallsorexternalmasonryouterleafwithsheathedloadbearingtimberframedstudinternalwalls.TheSystemisforfillingcavitywallsinexistingornew,residentialandnon-residentialbuildingsintheUKandIreland.
DESCRIPTION
TheSystemconsistsofagrey,spherical,closedcell,carbonenhancedexpandedpolystyrene(EPS)beadmanufacturedwithapentaneexpandingagentin accordancewithdraftBSEN16809-1.TheSystemisindependentlyauditedandcertifiedbyREDcerttotheREDcert2schemetoensurethemanufacturing processusesverifiedbiofuelsthatleadto80%lessCO2ethanthegreyEPSbeadproducedusingconventionalfuels.Awater-baseddispersionofacryliccopolymeremulsion,air-drying,contactbondingadhesiveissimultaneouslyinjectedwiththeEPSbeadswithappropriateinjectionmachinery.TheEPSbeadsare coatedwiththebondingadhesiveintheinjectionguntobondandsettheEPSbeadsandmaketheEPSbeadfillstableoverthelong-term.TheSystemis injectedthroughaseriesofholes,drilledinapredeterminedpattern.LayersofEPSbeadsarebuiltupuntilthewholecavitywallisfullyfilledinaccordancewith BSEN16809-2.
SYSTEMILLUSTRATION
THIRD-PARTYACCEPTANCE
NHBC/REDcert-Fordetailedinformationseesection3.3(Third-Partyacceptance)
STATEMENT
ItistheopinionofKiwaLtd.thattheSystemisfitforitsintendeduse,provideditisspecified,installedandusedinaccordancewiththisAgrément.
SUMMARYOFAGRÉMENT
ThisdocumentprovidesindependentinformationtoSpecifiers,buildingcontrolpersonnel,contractors,installersandotherconstructionindustryprofessionals consideringthefitnessfortheintendeduseoftheSystem.ThisAgrémentcoversthefollowing:
Conditionsofuse;
InitialFactoryProductionControl,QualityManagementSystemandtheAnnualVerificationprocedure; PointsofattentionfortheSpecifierandexamplesofdetails; Installation;
IndependentlyassessedSystemcharacteristicsandotherinformation; CompliancewithnationalBuildingRegulations,otherregulatoryrequirementsandThird-Partyacceptance; Sources,includingcodesofpractice,testandcalculationreports.
MAJORPOINTSOFASSESSMENT
Adequacyoffill-walls,includingpartiallyfilledcavitywalls,canbefullyfilledsufficientlywiththeSystem(seesection2.1.10)
Thermalinsulationproperties-theSystemimprovesthethermalinsulationofthewallstructure(seesection2.1.10).
Condensationrisk-theSystemcancontributetolimitingtheriskofinterstitialandsurfacecondensation(seesection2.1.10).
Resistancetoprecipitationincludingwind-drivenrainpenetration-theSystemwillresistthetransferofwateracrossthecavitytotheinnerleaf(see section2.1.10).
Resistancetogroundmoisture-theSystemdoesnotabsorbwaterbycapillaryactionandmaythereforebeusedinsituationswhereitbridgesthedamp proofcourse(DPC)oftheinnerandouterleafofcavitywalls(seesection2.1.10).
Behaviourinrelationtofire-theSystemisclassifiedasEuropeanClassificationE,inaccordancewithBSEN13501-1(seesection2.1.10).
Durability-theSystemisstable,rot-proof,waterresistantanddurableandwillhaveaservicelifeequivalenttothatofthelifeofthecavitywallinwhichitis installed(seesection2.1.8).
CEmarking-theproductmanufacturershavetakenresponsibilityforCEmarkingoftheproductsusedintheSysteminaccordancewithallrelevant harmonisedEuropeanProductStandards.Anasterisk(*)appearinginthisAgrémentindicatesthatdatashownisgivenintherelevantproductmanufacturers DeclarationofPerformance(DoP).
©2022KiwaLtd.
CHAPTER1-GENERALCONSIDERATIONS
1.1-CONDITIONSOFUSE
1.1.1Designconsiderations
Seesection2.1.
1.1.2Application
TheassessmentoftheSystemrelatestoitsuseinaccordancewiththisAgrémentandtheAgrémentholdersrequirements.
1.1.3Assessment
KiwaLtd.hasassessedtheSystemincombinationwithitsrelevantDoPs,testreports,technicalliteratureandfactoryandsitevisitsAlso,theNHBCStandards havebeentakenintoconsiderationFactoryProductionControlhasbeenassessed.
1.1.4Installationsupervision
TheAgrémentholderonlymanufacturesandsuppliestheSystem.TheinstallationcompaniesaretrainedandapprovedbytheAgrémentholder.
Thequalityofinstallationandworkmanshipmustbecontrolledbyacompetentpersonwhoshallbeanemployeeoftheinstallationcompany.Installationwork shallbesubjecttotheKiwaInstallerAssessmentandSurveillanceScheme.
TheSystemshallbeinstalledstrictlyinaccordancewiththerequirementsofthisAgrément.
Seealsosection2.1.6
1.1.5Geographicalscope
ThevalidityofthisdocumentislimitedtoEngland,Wales,Scotland,NorthernIrelandandIreland,withdueregardtochapter3ofthisAgrément(CDM,national BuildingRegulationsandThird-PartyAcceptance)
1.1.6Validity
ThepurposeofthisBDAAgrément®istoprovideforwell-foundedconfidencetoapplytheSystemwithintheScopedescribedThevalidityofthisAgrémentis threeyearsaftertheissuedate,andaspublishedonwww.kiwa.co.uk/bda.Afterthis,thevalidityofthisAgrémentcanbeextendedeverythreeyearsaftera positivereview.
1.2-INITIALFACTORYPRODUCTIONCONTROL(FPC)
KiwaLtd.hasdeterminedthattheAgrémentholderhasfulfilledallprovisionsofthespecificationsdescribedinthisAgrémentinrespectoftheSystem TheinitialFPCauditdemonstratedthattheAgrémentholderhasasatisfactoryQualityManagementSystem(QMS)andiscommittedtocontinuously improvingtheirFPCoperations.
AdetailedProductionQualitySpecification(PQS)hasbeencompiledtoensuretraceabilityandcomplianceunderthetermsofthisAgrément
1.3-QUALITYMANAGEMENTSYSTEM(QMS)
TheAgrémentholder:
o hasaneffectiveandwellmaintainedQMSinoperationwhichcoversthenecessaryclausesrequiredforBDAAgrément®
o iscommittedtocontinuallyimprovingtheirFPC,QMSandassociatedprocedures.
Documentcontrolandproductionlineproceduresweredeemedsatisfactory,withsufficientevidenceprovidedinsupportofBDAAgrément®requirements.
1.4-ANNUALVERIFICATIONPROCEDURE-CONTINUOUSSURVEILLANCE
TodemonstratethattheFPCisinconformitywiththerequirementsofthetechnicalspecificationdescribedinthisAgrément,thecontinuoussurveillance, assessmentandapprovaloftheFPCwillbedoneatafrequencyofnotlessthanonceperyearbyKiwaLtd.
IssueDate:July2022
©2022KiwaLtd.
CHAPTER2-TECHNICALASSESSMENT
2.1-POINTSOFATTENTIONTOTHESPECIFIER
2.1.1Designresponsibility
TheAgrémentholderreviewsalldesignssubmittedandoffersdesignadviceandguidancetoensureacompliantfinalprojectspecificdesign.
2.1.2Appliedbuildingphysics(heat,airmoisture)
ThephysicalbehaviourofthewallincorporatingtheSystemshallbeverifiedassuitablebyacompetentspecialist,whocanbeeitheraqualifiedemployeeofthe Agrémentholderoraqualifiedconsultant.TheSpecialistwillcheckthephysicalbehaviouroftheexternalwalldesignandifnecessarycanofferadvicein respectofimprovementstoachievethefinalspecification.AcondensationriskanalysisshallbecompletedatdesignstageinaccordancewithBS5250.Itis recommendedthattheSpecialistco-operatescloselywiththeAgrémentholder
2.1.3Generaldesignconsiderations
TheSystemmaybeusedinwallsupto12minheight(orabovewheretheAgrémentholderhasissuedasuitablewaiver),innon-residentialbuildingsorwhen installedinacavityconstructioncomprisingtwomasonryleaves,eachatleast75mmthick,subjecttoreactiontofireheightrestrictionsinaccordancewith nationalBuildingRegulations
Considerationshallbegiventothelocalwind-drivenrainindexinaccordancewithBS8104andthesiteexposurezoneinaccordancewithPD6697The Systemshallnotbeusedinareasofverysevereexposuretowind-drivenrainwherefair-facedmasonryistheexternalcladding
Formasonrywalls,minimumcavitywidthstobefilled:
forexistingbuildingsmustbenolessthan40mm; fornewbuildingsmustcomplywiththerelevantnationalBuildingRegulations; onnewbuildingswhereNHBCTechnicalStandardsapplymustbenolessthan50mm,asdefinedinNHBCStandardsChapter6.1.
Fortimberframedwalls:
theminimumcavitywidthtobefilledmustbenolessthan50mm;
the50mmcavitybetweentheinnerfaceoftheexternalmasonrywallandouterfaceofthetimberframedinnerleafmustbefreefromanyobstruction (includinginsulation)toensurethatthereisnotabridgethatallowswatertocrossthecavityfromtheexternalmasonrywalltothetimberframedinnerleaf Alappedandsealedwaterproofmembranemustbeappliedtotheouterfaceofthetimberframedinnerleaf,tofurtherpreventriskofwaterexposuretothe timber;
thetimberframedwallstudcavitywilltypicallybeineither400mmor600mmwidesectionsbetweensolidtimberstudsorjoists,withatypicalvoiddepthof 140mm;
timberframedwallsmayhaveaseparateservicecavityforelectricalwiring,howeverelectricalcablesmaybelaidinthesamecavityastheSystem.Where thisisthecase,carefulconsiderationshouldbegiventoensurethatelectricalwiringmustbeinstalledinconduittoseparateitfromtheSystemandallow easieraccessforfuturework;
avapourcontrollayer(hereinafterVCL)mustbeappliedontheinternalfaceofthetimberframedinnerleaftoensurethatthemoisturecontentofthe timberiskeptatorbelow20%,andtoensuretheairtightnessofthebuilding.
2.1.4Projectspecificdesignconsiderations
Pre-installationsurveyrequirements
Apre-installationsurveymustbeundertakentotheAgrémentholdersspecification;itisamandatoryrequirementtouseatapemeasureandborescope,to assessthewidthofthecavityandtoensureaclearvoidexists.Thefindingsofthissurveymustberecordedonasurveyorsreport.Selectionofanappropriate drillingpatternmusttakeintoconsiderationthenatureofthebuildinganditsconstruction.
2.1.5Permittedapplications
OnlyapplicationsdesignedaccordingtothisAgrémentareallowed,ineachcasetheSpecifiermustcooperatecloselywiththeAgrémentholder.
Existingbuildings:
theSystemshallbespecifiedtocomplywiththerequirementsofthenationalBuildingRegulations
Newbuildings:
externalmasonrywallsshallbeconstructedinaccordancewiththenationalBuildingRegulations; whererequired,dueconsiderationmustbegiventoNHBCStandards;
installationoftheSystemmustnotbeundertakenuntilthecavityisweathertight,i.e.theroofisinplaceandthewindowanddooropeningsaresealed. Partialfill(residualcavitiesandomittedareas);whereverpracticableandpossible,allofthecavityspacefromgroundleveltotherooforgablecopingsshould befilled,withtheexceptionof:
whenasemi-detachedorterracedpropertyistobeinsulatedseparately.Inthiscaseapolypropylenecavitybrushmustbeinsertedatthelinedividingthe propertiestocontaintheinsulation.Thisbrushisleftinplaceuponcompletionoftheworks;
whenfillinguptotheundersideofahorizontalboundaryotherthantheroof,wheretheboundaryisprotectedbyacavitytrayorsimilarwaterproofbarrier; wherethewalltobeinsulatediscoveredbyawaterproofcladding,suchashungtiles,andthiscladdingeitherextendsuptotherooforisprotectedatthe topbyothermeans(suchawindowcills);
insulatingareasofthewallwhereaccessfordrillingmaybelimitedbyfeaturessuchascarportsandconservatories.Theseareasmayhoweverbe accessedusingtheenergystorethermallance;
TheNHBCdoesnotgenerallyacceptexternalmasonrywallsconstructedwithdifferenttypesofcavityinsulationwithinthewallbuildup.Installingblown insulationtonewlycompletedhomesmayinvalidateclaimsmadeagainstthenewhomewarranty.
2.1.6Installercompetencelevel
TheAgrémentholderoperatesanApprovedInstallerSchemefortheSystemunderwhichinstallersareapproved,registeredandregularlyreviewedbythe AgrémentholdertodemonstratethattheyarecompetenttocarryoutinstallationsoftheSysteminaccordancewiththisAgrément.DetailsofApprovedInstallers areavailablefromtheAgrémentholder.ApprovedInstallersarefullyresponsibleforeachinstallationoftheSystemthattheyundertake.Furthermore,installers aretobemonitoredunderanIndependent3rdPartyCWIInstallationAssessment&SurveillanceSchemeoperatedorapprovedbyKiwaLtd.
2.1.7Delivery,storageandsitehandling Seesection2.3
2.1.8Durability
Onceinstalled,theSystemisprotectedinservicefromagentsliabletocausedeteriorationandwillbeeffectiveasinsulationforthelifeofthebuildinginwhichit isinstalled.Ifitisdeemednecessaryforanyreason,theSystemcanbeextractedfromthecavityvoid
2.1.9Maintenanceandrepair
OnceinstalledstrictlyinaccordancewiththerequirementsofthisAgrément,theSystemiscontainedwithinthestructureofthewallandthereforedoesnot requiremaintenanceforaslongasthewallismaintainedinaweathertightcondition.
2.1.10PerformancefactorsinrelationtotheMajorPointsofAssessment
Adequacyoffill(usingspecifiedinstallationmachineryanddrillingpattern)
Acavitywallcanbefullyfilled(withnogapsandaconsistentdensity)withtheSystemEventhemostdifficulttofillareaofacavitywall(theareatobelocated overaconservatorywherenodrillingorinjectionispermitted)canbefilledsufficientlywiththeSystemwhenusingtheenergystorethermallanceinstallation equipmentandtechnique.ThebondingadhesiveensuresthattheSystemremainsstablewithinthecavityandhasadequateresistancetosettlement.
Thermalinsulationproperties
ForthepurposeofU-valuecalculationsandtodetermineiftherequirementsofnationalBuildingRegulationsaremet,thethermalresistanceandU-valueof cavitywallsincorporatingtheSystemshouldbecalculatedinaccordancewithBSENISO10211(takingintoconsiderationBSENISO6946,BSENISO10456, BREReport443,PAS2030andPAS2035),usingtheSystemsdeclaredthermalconductivity(D)value.
Condensationrisk
ExternalwallsincorporatingtheSystemwilladequatelylimittheriskofsurfaceandinterstitialcondensationwhendesignedinaccordancewithBS5250.
Resistancetoprecipitationincludingwind-drivenrainpenetration
AcavitywallincorporatingtheSystem,wheninstalledinaccordancewiththisAgrément,canadequatelyresistrainwaterpenetrationacrossthecavitytothe innerleaf.TheSystemdoesnotaddtotheriskofwaterpenetration.ThegapsthatnaturallyoccurbetweentheEPSbeadsallowanywatertodraindownfreely totheground,ratherthantrackacrossthecavity.
Resistancetogroundmoisture
TheSystemdoesnotabsorbwaterbycapillaryaction.TestsconfirmtheSystemwillnottransmitmoisturebycapillaryactionacrossthecavityorfrombelow damp-proofcourse(DPC)level.TheSystemcanbeusedinsituationswhereitbridgestheDPCoftheinnerandouterleaf.Dampnessfromthegroundwillnot passthroughtotheinnerleafprovidedthewalliscorrectlydetailedinaccordancewiththerequirementsofthenationalBuildingRegulations.
Behaviourinrelationtofire
TheSystemisclassifiedasEuropeanClassificationEinaccordancewithBSEN13501-1.
Fornon-residentialbuildingsinEngland,WalesandNorthernIreland,thefollowingappliesinaccordancewiththenationalBuildingRegulations:
theSystemshallnotbeusedonbuildingswithastoreyof18mormoreabovegroundlevel.RefertotherelevantnationalBuildingRegulationsfortypesof buildingsandanyexclusionsthatmayapply;
boundaryrestrictionswillapply,dependentontheexternalsurfacematerialsoftheexternalwallincorporatingtheSystem,facingtheboundary.
ForresidentialbuildingsinEngland,WalesandNorthernIreland,thefollowingappliesinaccordancewiththenationalBuildingRegulations:
theSystemisrestrictedtobuildingswithnofloormorethan11maboveground.RefertothenationalBuildingRegulationsfortypesofbuildingsandany exclusionsthatmayapply;
boundaryrestrictionswillapply,dependentontheexternalsurfacematerialsoftheexternalwallincorporatingtheSystem,facingtheboundary.
ForallbuildingsinScotland,theSystemisrestrictedtobuildingswithnofloormorethan11mabovegroundandnotlessthan1mfromtheboundary.Insuch cases,theSystemmaybeexcludedfromtheunprotectedareacalculationregardlessofopenings.RefertothenationalBuildingRegulationsfortypesof buildingsandanyexclusionsthatmayapply.
FordwellingsinIreland,theSystemshallnotbeusedonbuildingswithastoreyof15mormoreabovegroundlevel;theSystemcanbeusedwithoutany boundaryrestrictions.RefertotherelevantnationalBuildingRegulationsfortypesofbuildingsandanyexclusionthatmayapply.
ForbuildingsotherthandwellingsinIreland,theSystemshallnotbeusedonbuildingswithastoreyof18mormoreabovegroundlevel;theSystemcanbe usedwithoutanyboundaryrestrictions.RefertothenationalBuildingRegulationsfortypesofbuildingsandanyexclusionthatmayapply.
ForallbuildingsinEngland,Wales,NorthernIreland,ScotlandandIreland,theSystemisunrestrictedforuseintermsofheightabovegroundandproximitytoa boundary,provideditisinstalledinacavityconstructioncomprisingtwomasonryleaves,eachatleast75mmthick,andwithcavitiesclosedaroundopeningsin awallandatthetopofawallhead.
TheSysteminstalledinawallcomprising12mmthickOSBboard,membrane,timberstudsandnogginsand125mmthickplasterboardhasbeentestedina loadbearingtimberframedwallandachievedREI30(seeSection2.4.6).
Toensurethatthefireintegrityofatimberframedwallismaintained,thetimberliningboardmusthavethejointsbetweentheboardsfullysealedandsupported bytimberstudworkorbattens.
Inallconstructions,cavitybarriersshallbeprovidedtocomplywiththerelevantprovisionsofthenationalBuildingRegulations.
Fordetailedconditionsofuseregardingrequirementsforsubstratefireperformance,cavityclosersandbarriers,firestoppingofservicepenetrationsand combustibilitylimitationsforothermaterialsandcomponentsusedintheoverallwallconstruction,designersshallrefertotherelevantnationalBuilding Regulations.
Proximityoffluesandappliances
Non-combustibleinsulationshallseparateorshieldtheinstalledSystemfromanyheat-emittingdevices,fixedcombustionappliances,incinerators,recessed lighting,fireplaces,chimneysorfluepipespassingthroughexternalwalls,andfromanypotentialsourceofignitionwherethetemperatureisinexcessof70°C, inaccordancewiththeprovisionsofthenationalBuildingRegulations.
2.2-EXAMPLESOFDETAILS
2.3-INSTALLATION
2.3.1Installercompetencelevel
TheAgrémentholderonlymanufacturesandsuppliestheSystem.
TheSystemshallbeinstalledstrictlyinaccordancewiththeSystemManualinstructionsoftheAgrémentholderandtherequirementsofthisAgrément.
Installationcanbeundertakenbyoperativestrainedandapprovedbytheinstallingcontractor(whomustbelongtotheKiwaInstallerAssessmentand SurveillanceScheme)
2.3.2Delivery,storageandsitehandling
TheEPSbeads:
aredeliveredtositeinlargebulkcontainerloadsorpolythenebagsandlabelledwiththeSystemname,AgrémentholdersnameandtheBDAAgrément® logoincorporatingthenumberofthisAgrément.TheEPSbeadisotherwiseunprotected; shouldbekeptdryandawayfromheatsourcesandavoidrainexposureandprotectedfromprolongedexposuretosunlight.
Damaged,contaminatedorwetmaterialsmustnotbeused.
Thebondingadhesive:
isdeliveredtositeinplasticdrums/containersandlabelledwiththeSystemname,AgrémentholdersnameandtheBDAAgrément®logoincorporatingthe numberofthisAgrément; hasanoptionalwintermixadhesiveavailablewhichhasaflowadditivetoassistincoldtemperatures; containersshouldbestoredinsideandoffthegroundatatemperaturebetween5°Cand25°Candprotectedfromfrost,directsunlightandhigh temperatures.
2.3.3Generalprocedure
InstallationoftheSystemisundertakenusinginjectionmachinesbasedonacompressedairdeliverysystem.Theinstallerprovidesallnecessaryhoses,drilling tools,equipment,injectiongunandmaterialsformakinggoodthewallsaftertheinstallation.
Wheneverpracticableandpossible,allofthecavityspacefromgroundleveltotherooforgablecopingsshouldbefilled.Installationmustbecarriedouttothe highestpointineachelevation,ortoaleveldeterminedbyanyverticalcavitybarrierbetweenadjacentproperties(whicheveristhelower)
ThetargetmeaninstalleddensityofthisSystemis12kg/m3overtheentirewall.Localareaswithinthewallmustnothaveadensityvariationofmorethan ±2kg/m3fromthetargetmeandensityoveranareaof0.5m2
ApplicationoftheSystemistobeleftuntilthecavityisweather-tight,i.e.thattheexternalmasonrywallandroofisinplaceandthatallcavityopenings,suchas thosearounddoorsandwindows,aresealed,toavoidwateringressontotheSystem.
2.3.4Preparation
Typicalpreparatoryworksinclude: repairstopointing,ifrequired; repairstothetimberframedwall,ifrequired; sleevingorotherwisemodifyingessentialventstopreventblockagebyinstallationoftheSystem; temporarysealingofwindowanddooropenings; temporarysealingofalluncappedcavitywalls; provisionofacavitytray,stopendsandweepholesatlintellevel; removalofanydebrisormortardroppingsleftinthecavity; sealingofdefectsintheopeningsintheinnerorouterleafofwallsespeciallyelectricityandgasmeterboxesusingappropriatematerial; insertionofacavitybrushatthelinedividingsemi-detachedorterracedpropertiestopermanentlycontaintheSystem
2.3.5Standardfillmethod
Masonrydrillingoperation: dependingontheinjectiongunbeingusedforapplication,22mmor26mmdiameterinjectionclearanceholesaredrilledintothemortarjointsintheouter leafatthepointwheretheverticalmortarjointmeetsthehorizontalmortarbed.
Masonrydrillingpattern:
therecommendeddrillingpatternsareillustratedinFigure1andalsogiveninwritingandasdiagramsintheSystemManualfortypicalsituationsthatcan bemetinpractice;
additionaldrillholesmayberequiredtoensurecompletefillingaroundbuildingfeatures,e.g.underwindowcills,aroundairbricks,incolumnareasbetween doorsandwindows,atthetopsofwallsandundergables.Careshouldbetakentoensurethatdrillholesdonotcoincidewithanyintermediatesuspended timberfloor.
Inordertopreventdebrisfallingontotheinsulation,alldrillingmustbecompletedononeelevationandatleast2moftheadjoiningelevationsbeforeinjection commencesonthatelevation.Eachelevationisfilledonlyaftercompletingallthedrillingrequiredinthatelevation
Timberframedrillingoperation:
core(over-drill)holesmustbe75mm
Timberframedrillingpattern:
therecommendeddrillingpatternsareillustratedinwritingandasdiagramsintheSystemManualfortypicalsituationsthatcanbemetinpractice; core(over-drill)holesmustpassonlythroughtheplasterboard;
amaximum22mmslitiscutintheVCLinthecentreofthe75mmcore(over-drill)hole; core(over-drill)holesmustbehorizontal; caremustbetakennottocausedamagetothetimberframedwall
Pre-fillingchecks
Formasonrywalls: borescopeinspectionsmustbecarriedouttoverifytheexistenceofclearcavitiesandtoidentifyanyserviceswithinthecavity.
Fortimberframedwalls:
a360°borescopecheckshouldbecarriedoutineveryvoidbeingfilledtoensurethatthetimberframedwallhasbeenbuiltinlinewiththespecification drawings;
theborescopecheckshouldbecompletedusingthedrillholestominimizethenumberofholesdrilledintheinternalplasterboard; fillingcancommenceoncetheinstallerissatisfiedthatthetimberframedwallhasbeenbuilttospecification,wiringisencasedinconduitandlocationofthe drillholeissuitable.
Checksarecarriedouttodeterminetheinjectionmachinesettingsareoptimised,including: apressureswitchtestwhichensuresthattheinjectionmachinepressureswitchisoperatingcorrectly; EPSbeadandadhesiveflowratecheckwhichensuresthattheSystemwillbeinjectedintothecavitywiththecorrectamountofadhesivebeingappliedfor thevolumeofEPSbeadsrecordedatthedesiredEPSbeaddensity.
Injectionfilling
Formasonrywalls:
TheSystemisinjectedintothecavityunderpressurethroughthedrillholesviaaflexiblepipe,fittedwithadirectionalinjectionnozzle.TheEPSbeadspacktoa uniformdensityinthecavity.TheSystemshouldbeinjectedintoeachdrillholeinturn.Fillingshouldproceedfromthebottomrowofdrillholestothetopofthe wallsandworkingacrossfromsidetosideorfromthemosttotheleastrestrictedareas,ensuringacompleteandevenfill.
SeeFigure1andtheSystemManualforfurtherdetailinrespectofthisprocedure.
Fortimberframedwalls:
injectionoftheSystemshouldbecarriedoutpriortoplasteringoftheinternalfaceofthetimberframedwall,sothatthevoidscanbeclearlyidentifiedby thevisiblelocationoffastenersinintermediatestuds.
ThevoidswithinthetimberframedwallareinjectedwiththeSystemusingadirectionalnozzletopreventdamagetotheplasterboard
SeeFigure5andtheSystemManualforfurtherdetailinrespectofthisprocedure.
2.3.6energystorethermallanceoptionmethod-masonrywalls
Theenergystorethermallanceisusedtoinstallhardtoreachareassuchasaboveconservatoriesorcarports,upto8mfromendofwalls.Theenergystore thermallancecanenabletheSystemtobeinstalledfromthecornersofpropertiesifrequired.
SeeFigures2and3,andtheSystemManualforfurtherdetailonthisprocedure.
2.3.7Partialfilloptionmethod-masonrywalls
Thepartialfillmethodisusedtotopuppre-insulatedcavitywalls.
SeeFigure4andtheSystemManualforfurtherdetailonthisprocedure.
2.3.8Finishing
Masonrywalls:
thedrillholesarefullyfilledwithmortarofasimilarcolour,textureandweathertightnesstothatoftheexistingwall.
SeetheSystemManualforfurtherdetailonthisprocedure.
Timberframedwalls:
theVCLisrepairedandtheoriginalcoreisreplacedusingadrywallrepairclip.Thecoreisthencoveredwithadhesivescrimpriortoplastering.
SeetheSystemManualforfurtherdetailonthisprocedure.
2.3.9Post-installationchecks
Post-installationexternalandinternalchecksarecarriedouttoensure:
thattheinstallationhasbeencompletedandthatnodamagehasoccurredtothebuilding; allareashavebeeninsulated;
alltheexternaldrillholeshavebeensealedwithmortarorrender;checkallinternaldrillholesintimberframedwallsarefinishedaspersection2.3.8; allareasincludingtrunkedairvents,e.g.thoseprovidingunder-floorventilationandcombustionairforheatingappliances,arecheckedandany obstructionsorEPSbeadingressmustbeclearedandthecavitybreachsealedifpossible; allfluesandchimneysmustbecarefullycheckedbyanappropriatetest(e.g.asmoketest)toverifythattheyareclearandunobstructed; EPSbeadsinjectedthroughthetopofthecavityintotheloftspaceareremovedandanypointsofleakagesealed; eavesintheloftareleftfreefromEPSbeadstofacilitateairflow; allelectriccircuitsandapplianceshavebeenreinstated.
2.4-INDEPENDENTLYASSESSEDSYSTEMCHARACTERISTICS
2.4.1AdequacyoffillofinjectedCWI(usingspecifiedinstallationmachineryanddrillingpattern) ThefillingofcavitywallswiththeSystemhasbeenwitnessedin-situduringsitevisits,including: theuseoftheenergystorethermallancetofillacavityofagablewall; thecorrectdrillingpatternandaccuracy; therecommendeddistancesbetweendrillholesanddistanceabovejoistlevel; correctinjectiontechniquebeingused
Thefillinghasalsobeenexaminedinatestrig,showingacavitycanbesufficientlyfullyfilledwiththeSystem.Afterinstalling,novoidswerevisibleinthecavity.
2.4.2Beadsizeanddensity
2.4.5Waterabsorption
Short-termwaterabsorption(24hr)bypartialimmersiontoBSEN1609,methodA,40mmthickness, 23°C,50%rh
2.4.6Behaviourinrelationtofire
Firebehaviourofaloadbearingtimberstudwall,whileunderload(5.5kNperstud)
Fireresistanceclassificationofabovewallmake-uptoBSEN13501-2
^ Testedwallconstruction12mmthickOSBboard,membrane,timberstudsandnoggins(140x39mm),superbeadinjectedbondedbeadcavitywall insulation,membrane,12.5mmthickplasterboard
2.5-ANCILLARYITEMS
AncillaryitemsdetailedinthissectionmaybeusedinconjunctionwiththeSystembutfalloutsidethescopeofthisAgrément: finishingmortarorrender; timberframedwallfinishingmaterials.
CHAPTER3-CDM,NATIONALBUILDINGREGULATIONSANDTHIRD-PARTYACCEPTANCE
3.1-THECONSTRUCTION(DESIGNANDMANAGEMENT)REGULATIONS2015ANDTHECONSTRUCTION(DESIGNAND MANAGEMENT)REGULATIONS(NORTHERNIRELAND)2016
InformationinthisAgrémentmayassisttheclient,PrincipalDesigner/CDMco-ordinator,designerandcontractorstoaddresstheirobligationsunderthese Regulations.
3.2-NATIONALBUILDINGREGULATIONS
IntheopinionofKiwaLtd.,theSystem,ifinstalledandusedinaccordancewithChapter2ofthisAgrément,cansatisfyorcontributetosatisfyingtherelevant requirementsofthefollowingnationalBuildingRegulations.
3.2.1-ENGLAND REQUIREMENTS:THEBUILDINGREGULATIONS2010ANDSUBSEQUENTAMENDMENTS
B3(1)Internalfirespread(structure)-theSystemdoesnotprejudicethestabilityofwalls
B3(4)Internalfirespread(structure)-awallincorporatingtheSystemcaninhibittheunseenspreadoffireandsmokewithinconcealedspaces
C2(a)Resistancetogroundmoisture-theSystemdoesnotabsorbwaterbycapillaryactionandmaythereforebeusedinsituationswhereitbridgesthe dampproofcourse(DPC)oftheinnerandouterleaf
C2(b)Resistancetoprecipitationmoisture-awallincorporatingtheSystemcanresistrainpenetrationtotheinnerleafandsatisfythisRequirement
C2(c)Resistancetocondensationmoisture-theSystemcancontributetosatisfyingthisRequirement
J4Protectionofbuilding-theSystemcanbeseparatedfromheatproducingappliances,fluepipes,chimneysandfireplacestopreventabuildingfrom catchingfire
L1(a)(i)Conservationoffuelandpower-theSystemcancontributetolimitingheatgainsandlossesthroughawall
Regulation7(1)-Materialsandworkmanship-theSystemismanufacturedfromsuitablysafeanddurablematerialsforitsapplicationandcanbeinstalled togiveasatisfactoryperformance
Regulation23-Requirementsrelatingtothermalelements-useoftheSystemcancontributetotheconservationoffuelandpowerinbuildingsbylimiting heatgainsandlossesthroughthermalelementsandotherpartsofthebuildingfabric
Regulation26-CO2emissionratesfornewbuildings-theSystemcancontributetosatisfyingthisRequirement
Regulation26A-Fabricenergyefficiencyratesfornewdwellings-theSystemcancontributetosatisfyingthisRequirement
Regulation26CTargetprimaryenergyratesfornewbuildings-theSystemcancontributetosatisfyingthisRequirement
3.2.2-WALES REQUIREMENTS:THEBUILDINGREGULATIONS2010ANDSUBSEQUENTAMENDMENTS
B3(1)Internalfirespread(structure)-theSystemdoesnotprejudicethestabilityofwalls
B3(4)Internalfirespread(structure)-awallincorporatingtheSystemcaninhibittheunseenspreadoffireandsmokewithinconcealedspaces
C2(a)Resistancetogroundmoisture-theSystemdoesnotabsorbwaterbycapillaryactionandmaythereforebeusedinsituationswhereitbridgesthe dampproofcourse(DPC)oftheinnerandouterleaf
C2(b)Resistancetoprecipitationmoisture-awallincorporatingtheSystemcanresistrainpenetrationtotheinnerleafandsatisfythisRequirement.
C2(c)Resistancetocondensationmoisture-theSystemcancontributetosatisfyingthisRequirement
J4Protectionofbuilding-theSystemcanbeseparatedfromheatproducingappliances,fluepipes,chimneysandfireplacestopreventabuildingfrom catchingfire
L1(a)(i)Conservationoffuelandpower-theSystemcancontributetolimitingheatgainsandlossesthroughawall
Regulation7(1)Materialsandworkmanship-theSystemismanufacturedfromsuitablysafeanddurablematerialsforitsapplicationandcanbeinstalledto giveasatisfactoryperformance
Regulation23-Requirementsrelatingtothermalelements-useoftheSystemcancontributetotheconservationoffuelandpowerinbuildingsbylimiting heatgainsandlossesthroughthermalelementsandotherpartsofthebuildingfabric
Regulation26-CO2emissionratesfornewbuildings-theSystemcancontributetosatisfyingthisRequirement
Regulation26A-Primaryenergyratesfornewbuildings-theSystemcancontributetosatisfyingthisRegulation
Regulation26B-Fabricperformancevaluesfornewdwellings-theSystemcancontributetosatisfyingthisRequirement
Regulation26CMinimumenergyefficiencyrating-theSystemcancontributetosatisfyingthisRequirement
3.2.3-SCOTLAND
3.2.3.1Regulation8(1)(2)Fitnessanddurabilityofmaterialsandworkmanship
TheSystemismanufacturedfromacceptablematerialsandisconsideredtobeadequatelyresistanttodeteriorationandwearundernormalservice conditions,provideditisinstalledinaccordancewiththerequirementsofthisAgrément
3.2.3.2Regulation9BuildingStandards-Construction
2.1Compartmentation-awallincorporatingtheSystemcaninhibitthespreadoffireandsmoke
2.3Structuralprotection-theSystemdoesnotprejudicetheload-bearingcapacityofwalls
2.4Cavities-awallincorporatingtheSystemcaninhibittheunseenspreadoffireandsmokewithinconcealedspaces
3.4Moisturefromtheground-theSystemcancontributetoaconstructionsatisfyingthisstandardwithreferencetoclause3.4.1oftheTechnical Handbooks;theSystemcanbeusedinsituationswhereitbridgestheDPCoftheinnerandouterleaf
3.10Precipitation-theexternalleafofacavitywallpreventsprecipitationfromreachingtheinnerleafofthewallbyallowingwatertodraindownthe resultantcavity;theSystemdoesnotinhibitthisaction
3.15Condensation-awallincorporatingtheSystemcanbedesignedandconstructedtoinhibitcondensation
3.19Combustionappliances-theSystemcanbeseparatedfromheatproducingappliances,fluepipes,chimneysandfireplacestopreventabuildingfrom catchingfire
6.1(b)Carbondioxideemissions-awallincorporatingtheSystemiscapableofreducingthecarbondioxideemissions
6.2Buildinginsulationenvelope-awallincorporatingtheSystemcanreduceheatloss
7.1(a)(b)Statementofsustainability-theSystemismanufacturedfrommaterialsthatcancontributetosatisfyingtherelevantrequirementsof Regulation9,Standards1to6,andthereforewillcontributetoaconstructionmeetingabronzelevelofsustainabilityasdefinedinthisStandard;in addition,theSystemcancontributetoaconstructionmeetingahigherlevelofsustainabilityasdefinedinthisStandard
3.2.3.3Regulation12BuildingStandards-Conversion
AllcommentsgivenunderRegulation9alsoapplytothisregulation,withreferencetoSchedule6ofTheBuilding(Scotland)Regulations2004and subsequentamendments,clause0.12oftheTechnicalHandbook(Domestic)andclause0.12oftheTechnicalhandbook(Non-Domestic)
3.2.4-NORTHERNIRELAND
REQUIREMENTS:THEBUILDINGREGULATIONS(NORTHERNIRELAND)2012ANDSUBSEQUENTAMENDMENTS
23(1)(a)(i)(iii)(b)Fitnessofmaterialsandworkmanship-theSystemismanufacturedfrommaterialswhichareconsideredtobesuitablysafeand acceptableforuseasdescribedinthisAgrément
28(a)Resistancetogroundmoisture-theSystemcancontributetosatisfyingthisRegulation
28(b)Resistancetotheweather-awallprotectstheSystemfromprecipitationtotheinnerface
29Condensation-awallshallbedesignedandconstructedtopreventinterstitialcondensation
35(1)Internalfirespread-Structure-theSystemdoesnotprejudicethestabilityofwalls
35(4)Internalfirespread-Structure-awallincorporatingtheSystemcaninhibittheunseenspreadoffireandsmokewithinconcealedspaces
39(a)(i)Conservationmeasures-theSystemcancontributetolimitingheatgainsandlossesthroughawall
40(2)Targetcarbondioxideemissionrate-awallincorporatingtheSystemshallbedesignedandconstructedasnottoexceeditstargetCO2emissionrate 43Renovationofthermalelements-therenovationworkcarriedouttoensurethewallcomplieswithrequirement39(a)(i)
73(1)Protectionofpeopleandbuildings-theSystemcanbeseparatedfromheatproducingappliances,fluepipes,chimneysandfireplacestopreventa buildingfromcatchingfire
3.2.5-IRELAND REQUIREMENTS:BUILDINGREGULATIONS1997ANDSUBSEQUENTAMENDMENTS
InordertodemonstratecompliancewithIrishBuildingRegulations,thisBDAAgrément®certifiesthattheSystemcomplieswiththerequirementsofa recogniseddocumentandindicatesitissuitableforitsintendedpurposeanduse.
B3(1)Internalfirespread(structure)-theSystemdoesnotprejudicethestabilityofwalls
B3(3)Internalfirespread(structure)-awallincorporatingtheSystemcaninhibittheunseenspreadoffireandsmokewithinconcealedspaces
B8(1)Internalfirespread(structure)-theSystemdoesnotprejudicethestabilityofwalls
B8(3)Internalfirespread(structure)-awallincorporatingtheSystemcaninhibittheunseenspreadoffireandsmokewithinconcealedspaces
C4Resistancetoweatherandgroundmoisture-awallcanpreventthepassageofmoisturetotheinsideofthebuilding
D1Materialsandworkmanship-theSystemismanufacturedfromacceptablematerialsandisconsideredtobeadequatelyresistanttodeterioration andwearundernormalserviceconditions,provideditisinstalledinaccordancewiththerequirementsofthisAgrément
J3Protectionofbuilding-theSystemcanbeseparatedfromheatproducingappliances,fluepipes,chimneysandfireplacestopreventabuildingfrom catchingfire
L1Conservationoffuelandenergy-theSystemcancontributetolimitingheatgainsandlossesthroughwallsandconservefuelandenergy
L2(a)Conservationoffuelandenergy(inexistingdwellings)-theSystemcancontributetolimitingheatgainsandlossesthroughwalls
L4(a)Conservationoffuelandenergy(inexistingbuildingsotherthandwellings)-theSystemcancontributetolimitingheatgainsandlossesthroughwalls
L5(c)Conservationoffuelandenergy(innewbuildingsotherthandwellings)-theSystemcancontributetolimitingheatgainsandlossesthroughwalls
Regulation7Conservationoffuelandenergyinexistingdwellings-theSystemcancontributetosatisfyingthisRequirement
Regulation8(c)Conservationoffuelandenergyinnewdwellings-theSystemcancontributetosatisfyingthisRequirement
33-THIRD-PARTYACCEPTANCE
NHBC-IntheopinionofKiwaLtd.,theSystem,ifinstalledinareasotherthanverysevereexposurezonelocationswithfair-facedmasonry,andusedand maintainedinaccordancewiththisAgrément,cansatisfyorcontributetosatisfyingtherelevantrequirementsinrelationtoNHBCStandards,Chapter6.1 ExternalmasonrywallsandChapter6.2Externaltimberframedwalls.
REDcert-TheSystemisindependentlyauditedandcertifiedbyREDcerttotheREDcert2schemetoensurethemanufacturingprocessusesverifiedbiofuels thatleadto80%lessCO2ethanthegreyEPSbeadproducedusingconventionalfuels.
CHAPTER4-SOURCES
BSENISO6946:2017Buildingcomponentsandbuildingelements.Thermalresistanceandthermaltransmittance.Calculationmethods
BSENISO10211:2017Thermalbridgesinbuildingconstruction.Heatflowsandsurfacetemperatures.Detailedcalculations
BSENISO10456:2007Buildingmaterialsandproducts.Hygrothermalproperties.Tabulateddesignvaluesandproceduresfordeterminingdeclaredand designthermalvalues
BSENISO11925-2:2010Reactiontofiretests.Ignitabilityofproductssubjectedtodirectimpingementofflame.Single-flamesourcetest
BSENISO13788:2012Hygrothermalperformanceofbuildingcomponentsandbuildingelements.Internalsurfacetemperaturetoavoidcriticalsurface humidityandinterstitialcondensation.Calculationmethods
BSEN1363-1:2020Fireresistancetests.Generalrequirements
BSEN1363-2:1999Fireresistancetests.Alternativeandadditionalprocedures
BSEN1365-1:2012Fireresistancetestsforloadbearingelements.Walls
BSEN1602:2013Thermalinsulatingproductsforbuildingapplications.Determinationoftheapparentdensity
BSEN1609:2013Thermalinsulatingproductsforbuildingapplications.Determinationofshorttermwaterabsorptionbypartialimmersion
BSEN12524:2000Buildingmaterialsandproducts.Hygrothermalproperties.Tabulateddesignvalues
BSEN12667:2001Thermalperformanceofbuildingmaterialsandproducts.Determinationofthermalresistancebymeansofguardedhotplateandheat flowmetermethods.Productsofhighandmediumthermalresistance
BSEN13172:2012Thermalinsulationproducts.Evaluationofconformity
BSEN13238:2010Reactiontofiretestsforbuildingproducts.Conditioningproceduresandgeneralrulesforselectionofsubstrates
BSEN13501-1:2018Fireclassificationofconstructionproductsandbuildingelements-Classificationusingdatafromreactiontofiretests
BSEN13501-2:2016Fireclassificationofconstructionproductsandbuildingelements.Classificationusingdatafromfireresistancetests,excluding ventilationservices
BSEN15026:2007Hygrothermalperformanceofbuildingcomponentsandbuildingelements.Assessmentofmoisturetransferbynumericalsimulation DraftBSEN16809-1.Thermalinsulationproductsforbuildings.In-situformedproductsfromloose-fillexpandedpolystyrene(EPS)beadsandbonded expandedpolystyrenebeads.Part1.Specificationforthebondedandloosefilledproductsbeforeinstallation
BSEN16809-2:2017Thermalinsulationproductsofbuildings.In-situformedproductsfromloose-fillexpandedpolystyrene(EPS)beadsandbonded expandedpolystyrenebeads.Specificationforthebondedandloose-fillproductsafterinstallation
BS476-21:1987Firetestsonbuildingmaterialsandstructures.Methodsfordeterminationofthefireresistanceofloadbearingelementsofconstruction BS5250:2011+A1:2016Codeofpracticeforcontrolofcondensationinbuildings
BS8104:1992Codeofpracticeforassessingexposureofwallstowind-drivenrain
BREReport262:2002Thermalinsulation:avoidingrisks
BREReport443:2006ConventionsforU-valuecalculations
BREReport497:2016Conventionsforcalculatinglinearthermaltransmittanceandtemperaturefactors
BREInformationPaperIP1/06:2006Assessingtheeffectsofthermalbridgingatjunctionsandaroundopenings
BREGBG44-2:2000Insulatingmasonrycavitywalls:principalrisksandguidance
BREGG33:2015Buildingdamp-freecavitywalls
CIGATechniciansguidetobestpractice:2002Installingcavitywallinsulation
CIGACWI-Guidetobestpractice:2008WorkingatheightintheretrofitCWIindustry
CIGATechniciansguidetobestpractice:2016Flues,chimneysandcombustionairventilators
NHBCStandards2019
PAS2030:2019+A1:2022Specificationfortheinstallationofenergyefficiencymeasuresinexistingdwellings
PAS2035:2019+A1:2022Retrofittingdwellingsforimprovedenergyefficiency.Specificationandguidance
PD6697:2019RecommendationsforthedesignofmasonrystructurestoBSEN1996-1-1andBSEN1996-2
REDcert2Certificationsystemforthepurposeofmassbalancedproducts
Remark:apartfromthesesourcesconfidentialreportsmayalsohavebeenassessed;anyrelevantreportsareinthepossessionofKiwaLtdandkeptin theTechnicalAssessmentFileofthisAgrément;theInstallationGuidesarecurrentatthetimeofpublicationandmaybesubjecttochange,theAgrément holdershouldbecontactedforclarificationofrevision