fellert acoustical plaster acoustical plaster installation guide 5.1 fellert acoustical ceilings ab...

FELLERT ACOUSTICAL PLASTERINSTALLATION GUIDE 5.1

Fellert Acoustical Ceilings ABKyrkängsgatan 6503 38 Borås, SwedenTel: 46 33 4302202

www.fellert.com

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© All Rights Reserved Fellert Acoustical Ceilings AB2 09/30/14

INTRODUCTION 3

GENERAL CONDITIONS FOR INSTALLATION Limitations & Guidelines 4 Job Conditions 4 Control Joints 5 Effects Of Lighting 5

MOCK UP CONDITIONS 6

STANDARD FINISHES 7

INSTALLATION TYPES 8 MATERIALS 9

TOOLS & EQUIPMENT 13

CHECKLIST 19

PRINCIPLES OF INSTALLATION OF FELLERT EVEN BETTER PLASTER SYSTEMS (EB1 & EB2) FellertAcousticalBoard&SubstratePreparation 20 A. GWB B.Plasteronly(noFellertAcousticalboard) C.CeilingGrid400mmc/c(16”o.c.)(noGWB) Coverage and Mixing Guide 30 ApplicationofStandardFinishes 31 A.EB1“Basecoat”Plaster B.EB1“Finish”PlasterforSecern(formerlyknownasNatural) C.EB2“Finish”PlasterforSahara(formerlyknownasTroweled) D.EB2“Finish”PlasterforSilk(formerlyknownasUltra) VerticalSurfaces 39 CurvedSurfaces 41 CustomColorsandTechniques 42 KEY INSTALLATION NOTES 43

HEALTH & SAFETY GUIDELINES 44

FINAL APPEARANCE 45

DRY STAINS - ALL FELLERT FINISHES 46

SOLUBLE STAINS - ALL FELLERT FINISHES 47

HOLES, DAMAGES, & WATER DAMAGED AREAS 48

CONSTRUCTION DETAILS 51

TABLEOFCONTENTS

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INTRODUCTION

Fellertisaseamlessacousticalplastersystemwithaestheticdesigncapabilities.Themaincomponentsareacousticalboardandacousticalplaster.Boththesecomponentsindividuallycontributetowardssoundabsorption. ThepurposeofthisinstallationguideistoprovidethereaderwiththebasicfundamentalsofhowtoinstallFellert.Theguideconsistsofmainlypictures,descriptions,andnotes.

Thisdocumentservesasaguideandnotaspecificinstructionmanual.Asalmostnoconstructionprojectisidentical,eachFellertinstallationwillhavedifferentcircumstances;however,thebasicprinciplesofinstallingtheproductremainthesame.

AllFellertapplicatorsarerequiredtoattendatrainingclasspriortopurchasingmaterialsandapplyingtheFellertsystem.ApplicatorsarerequiredtoperformqualityinstallationsoftheFellertsystemoneveryproject.

TheFellertspecificationsandpolicydocumentsstatetherequirementofaprojectmockup.Applicatorsneedtoobtainapprovalofaprojectmockuppriortocommencingwiththeinstallation.Theapplicatoris100%responsibleforthequalityoftheprojectinstallation.

Notice: Fellert retains the right to edit, modify, or delete the contents of this document and other related installation information without the consent or approval from any other party. Please contact Fellert to ensure you have the latest installation and/or technical information on the Fellert system.

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GENERALCONDITIONSFORINSTALLATION

LIMITATIONS & GUIDELINES

Aswithanyhand-craftedplaster,thefinalappearanceoftheFellertacousticalsystemmayvaryslightlythroughouttheexpanseofthesurfaceareaespeciallyundercriticallightingconditions.Theinstallershouldalwaysfollowlocalbuildingcodesandregulationsandisfullyresponsibleforthequalityoftheinstallation.

JOB CONDITIONS

• Allwindowsandexteriordoorsshallbeinplaceandglazed.Thebuildingshallbewater-tightpriortothestartoftheinstallation.Thisconditionshouldbemaintainedduringandaftertheinstallation.AllGWBsubstratesmustbe“sealedairtight”toalevelonefinish.AllHVAC,electrical,firesprinklerandotherpenetrationsshallbesealedwithtraditionaldrywalltapeoraself-adhesivefire-tapetopreventairmovementbetweentheoccupiedspaceandtheplenum.FordirectattachmenttoceilinggridapplicationsensurethattheHVACsystemintheoccupiedspaceisproperlybalanced.• FixturessuchasMEP,lighting,sprinklers,ventilation,etc.,shouldbeinplacepriortothestartoftheinstallation.• TheFellertacousticalmaterialsareforinterioruseonly.Theinstallationshouldbedonewithintypicaloccupancytemperaturerangesof15–32°C(60–90°F)andatamaximumof70%relativehumidity.• Acousticalboardsshallbeprotectedfromexposuretosunlight.Keeptheboardsinthepackaginguntilreadyforuse.EnsurethatthetherearenodelaysinsprayingthefirstcoatofFellertacousticalplastertotheboards.• Itisnotrecommendedtohavecoldjointsinthefinishplaster.ThefinalapplicationoftheFellertacousticalplasterhastobecompletedinasingleworkstep—donecorner-to-cornerortoabreakstoppingpoint.

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GENERALCONDITIONSFORINSTALLATION

CONTROL JOINTS

Fundamentallyspeaking,theelasticnatureoftheFellertplastersystemmeansthatthereisnoengineeringrequirementofcontroljointsexceptwhenabuildingisunderexcessivestructuralstress.Structuralexpansionsjointsareobservedhowever.TherearepracticallimitationsofhowlargeofanexpansetheFellertcontractorcancompleteinasingleworkday.

Thefollowingareguidelines:• Upto232M2(2,500sqft)achievablewithaFellertcontractorundernormalworkingconditions.• Upto465M2(5,000sqft)achievablewithanexperiencedFellertcontractor;however,additionalspraycrewswillberequired.Additionalworkinghoursmayberequired.• Over465M2(5,000sqft)achievablewithanexperiencedFellertcontractor;however,additionalspraycrewswillberequired.Additionalworkinghourswillberequired.Properplanningisrequiredwhenattemptingverylargeexpanses.

EFFECTS OF LIGHTING

Itisadvisabletoconsiderthatthelightingselectedbecomplementarytotheceilingfinish.Themostcriticalfactoristhedirectionofthelightsource.Acriticalhorizontallightthatstrikesanyceilingsurfaceatanacuteangleaccentuatesnormalceilingirregularities,affectingthefinalappearanceofanyfinish.Exteriorlightingfromwindowscanhighlightthenaturalvariationsofhand-craftedplaster.

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MOCKUPCONDITIONS

MOCKUP CHECKLIST:Per the Fellert specifications and installation guide a mockup must be approved by the architect or client prior to the commencement of the installation. The mockup can be part of the scope of work. The contractor is fully responsible for ensuring a quality installation of the Fellert system.

□ InstallerhasattendedaFellerttrainingseminarandiscurrentlylistedasanauthorizedinstallerwithFellert.

□ InstallerhascontactedFellertatleastthreeweeksinadvanceifonsitelaborassistanceifneededforthemockup.

□ SamplesoftheFellertfinish,colorandthicknesshavebeenapproved.

□ LocationofFellertmockuphasbeenconfirmedwithgeneralcontractorwhichshouldbeatleast9m2(100sqft)insize.Themockupshallremainintactthroughouttheproject.

Ensurethefollowingsiteconditionshavebeenmetpriortomockupinstallation:□ Allwindowsandexteriordoorsshallbeinplaceandglazed.Thebuildingshallbewatertightpriortothestartoftheinstallation.AllGWBsubstratesmustbe“sealedairtight”toalevelonefinish.AllHVAC,electrical,firesprinklerandotherpenetrationsshallbesealedwithtraditionaldrywalltapeoraself-adhesivefire-tapetopreventairmovementbetweentheoccupiedspaceandtheplenum.FordirectattachmenttoceilinggridapplicationsensurethattheHVACsystemintheoccupiedspaceisproperlybalanced.□ Theinstallationshouldbedonewithintypicaloccupancytemperaturerangesof15–32°C(60–90°F)andatamaximumof70%relativehumidity.□ Allpermanentfixturessuchaslights,diffusers,speakers,etc.aretobeincludedinthemockup.□ Theintendedlightingconditionsforthebuildingaretobeusedorsimulatedinthemockup.□ EnsurethatthebuildingisventilatedtoassistwiththedryingprocessiftheHVACisnotoperational.

□ Delivermaterialstoprojectsiteinoriginal,unopenedpackagesandstoretheminafullyenclosedspacewheretheywillbeprotectedagainstdamagefrommoistureandotherharmfulconditions.Protectmaterialsfromfreezing.

□ Installerhasrecommendedtoolsandequipmentonsite

□ Installerhasaccesstopotablewater.

□ InstallthemockuppertherecommendationslistedintheFellertinstallationguide.

□ Mockupapprovedbyarchitect/client.

AnyadditionalcostsincurredtoFellertasaresultofchangestothemockupscheduleand/orscopeofworkwillbebornebytheinstallingcontractor.TheFellertsystemmustbeinstalledperthespecificationsandmanufacturer’sinstallationguideinordertoqualifyfortheproductwarranty.

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STANDARDFINISHES

SILK (Smooth)

Thisfinishresemblesasmoothmonolithichand-craftedfinish.

Two-coatapplication:1xEB1(basecoat)1xEB2(finishcoat)

SAHARA (Fine Textured)

Thisfinishresemblesalightlytexturedmonolithichand-craftedfinish.


SECERN (Textured)

Thisfinishresemblesatexturedmonolithichand-craftedfinish.


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INSTALLATIONTYPES

A. New GWB (FullyAdheredSystem)

Thisisthepredominantapplicationmethod.TheFellertAcousticalBoardisadheredtoGWBsubstratethatmustbe“sealedairtight”toalevelonefinish.AllHVAC,electrical,firesprinklerandotherpenetrationsshallbesealedwithtraditionaldrywalltapeoraself-adhesivefiretapetopreventairmovementbetweentheoccupiedspaceandtheplenum.MeshtapeandFellertPrimerareappliedtotheplasticCchannel,GWBrippers,cornerbeads,etc.TheFellertAcousticalBoardisthensprayedwiththeFellertacousticalplaster.

AlternativesubstratestheFellertmaybeappliedtoare:concrete,existingplaster,GFRGsurfaces,andpreviouslypaintedGWB.Thesesubstrateswillneedtobetestedforbondstrength,cleanedandsandedsmooth.TheFellertAcousticalBoardisattachedtothesubstrateswiththeFellertAdhesiveandsecuredwithaminimalamountofFellertSpringWashersifrequired.

B. Ceiling Grid (DirecttoFraming–NoGWB)

TheFellertacousticalplastersystemcanbeinstalledto406mmc/c(16”o.c.)drywallgrid.ThesubstrateisconstructedwithoutalayerofGWB.TheFellertacousticalboardsaremechanicallyattachedtodrywallgridtherebyeliminatingtheneedandcostforalayerofGWB.Thereisanincreaseinsoundabsorptionperformanceinthelowfrequencyrangewiththedirect-togridinstallationmethodwhichiscommonlyreferredtoastheE-400mountand/orairgapbehind.TherearelimitationstowhattypesofsubstratedesignsthatcanbedonewiththeFellertdirect-to-gridmethod.Thefollowingareguidelines:

• FlatshapesareachievablewiththenormalFellertdirect-togridinstallationmethod.Thisincludesangledceilingsandwalls1.82M(6ft)aboveFFL.ThisisthestandardFellertdirect-to-gridapplicationmethodandisexpectedfromalltrainedinstallers.• Barrelvaultedceilingsarepossibleprovidingthedrywallgridis406mmc/c(16”o.c.).However,notethatthisinstallationmethodwillbemoretimeconsumingasmoreFellertSpringWasherswillbeneeded.ConsultwithyourlocalFellertagentpriortospecifyingtheFellertdirect-to-gridsystemonabarrelshapedceiling.• Domesandvaultedceilingsarenotpossiblewiththedirect-to-gridsystem.• NotethattheHVACsystemintheoccupiedspaceistobeproperlybalanced.

C. Plaster only (NoFellertAcousticalBoard)

FellertPrimerisappliedtoadrywallsubstratepreparedtoalevel4standard.TheprimedsurfaceisthensprayedwiththeFellertacousticalplaster.Alternativesubstratessuchasconcrete,existingplasterandpreviouslypaintedGWBwillneedtobepreppedaccordinglyandensuretheyaresoundandfreefromcracking.

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MATERIALS

USE ONLY PROPRIETARY MATERIALS AND ACCESSORIES DISTRIBUTED OR RECOMMENDED BY FELLERT.

Plastic C Channel

ThisproductisusedtofinishtheFellertAcousticalBoardandFellertPlastertoanadjacentsurface.Theproductcanbecuttoflexandfitaroundgradualshapesandangles.

TheCchannelisnotdesignedtobeaself-finishedexposededgedetail,e.g.cloudsorexposedreturnangles:soldin3M(10ft)lengths.

Fellert Acoustical Board

The25mm(1”)or39mm(1.5”)122x122cm(4’x4’)FellertAcousticalBoardisthemaincomponentoftheFellertsystemthatabsorbssound.Donotremovefromthepackagingorexposetosunlightuntilreadytoapply.AlwaysapplythefirstlayerofFellertplasterwithin24hoursofinstallingtheacousticalboardprovidinganyapplicationofFellertprimerhasfullydried.Alwaysstoreflat,donotstackonedge.The25mm(1”)sizehas8boardsperboxand39mm(1.5”)sizehas6boardsperbox.

Coverage:1.5M2(16sqft)perpanel

Fellert Spring Washers

OnlytheFellertSpringWashersandthe50mm(2”)FellertZincotecZNscrewsaretobeusedtoanchortheacousticalboardsinthedirect-to-gridapplicationon406mmc/c(16”o.c.)drywallgrid.TheFellertSpringWashers(andotherflatdisc-shapedwashers)arealsousedtotemporarilyholdthefiberglassboardinpositiononcurvedsurfaces.

Coverage:approx.8washersper1M2(10sqft)

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Fellert Caparol Adhesive

UsedforbondingtheFellertAcousticalBoardtodrywall,existingplaster,concreteorpreviouslypaintedsurfaces.AdhesiveisappliedonbackoftheFellertAcousticalBoardwith6.35mmx6.35mm(1/4”x1/4”)notchedtrowel.

Coverage:10M2(110sqft)Soldin25kg(55lb)bags

50 mm (2”) self-adhesive mesh tape

TheGrabberGMT200self-adhesivemeshtapeorequivalent,isusedtobridgethejoiningoftheCchannelandanydrywall“rippers”totheFellertAcousticalBoard:soldinsinglerolls.

Useonlywhiteorclearcoloredmeshtape.

Coverage:90linearmeters(300linearfeet)

MATERIALS

Fellert Styrobond Adhesive - North America only

UsedforbondingtheFellertAcousticalBoardtodrywall,existingplaster,concreteorpreviouslypaintedsurfaces.AdhesiveisappliedonbackoftheFellertAcousticalBoardwith6.35mmx6.35mm(1/4”x1/4”)notchedtrowel.

Coverage:7M2(75sqft)Soldin23kg(50lb)bags

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Fellert Alcro Primer

Theproductismixedwithone(1)containerofthesandadditive.UsedforprimingthemeshtapejoiningofthewallchanneltrimandFellertAcousticalBoardanddrywallinitsentiretywhendoingnonacousticalboardinstallations.Theprimerisalsousedtocoatplasticbeadsandanydrywallrippers.

Primercoverage:56LM(185lft)fortrimtransitionsor24M2(260sqft)forgeneralapplication

MATERIALS

Fellert Sand Finish Additive

TheFellertPrimerandsandadditivearealwayspurchasedtogether.

Primerwithsandcoverage:101LM(366lft)fortrimtransitionsor16M2(180sqft)forgeneralapplication

Fellert Sand Finish Additive - North America only

Thisproductismixedonsitewithone4Lcontainerofprimer.TheFellertPrimerandsandadditivearealwayspurchasedtogether.

Primerwithsandcoverage:101LM(366lft)fortrimtransitionsor16M2(180sqft)forgeneralapplication

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MATERIALS

Fellert Even Better 2 (EB2)

TheFellertEB2plasterismadefromrecycledcottonfibersandperlite.ThisisthefinishcoatfortheSilkandSaharafinishsystems.Itissprayedonapprox.1.5mm(1/16”)wetthickness:Soldin5kg(11pounds)bags.

SilkFinishCoverage:20M2(200sqft)perbagSaharaFinishCoverage:40M2(430sqft)perbag-notethatahigherconsumptionratemayoccurwhendoingmidtodarkcolors.

Calculatedwaste:5%

Fellert Even Better 1 (EB1)

Madefromrecycledcottonfibersandperlite.Useasbasecoatforallthefinishes.UseasthefinishcoatfortheSecernfinish.Theplasterissprayedonapprox.3mm(1/8”)wetthickness:soldin5kg(11pounds)bags.

BasecoatCoverage:10M2(100sqft)perbagSecernFinishCoverage:15-30M2(150-300sqft)perbagCalculatedwaste:5%

PROPRIETARYMATERIALSLISTEDABOVEAREONLYAVAILABLETOORDERVIAFELLERT. USEONLYMATERIALSLISTEDINMANUALINORDERTOCOMPLYWITHWARRANTY.

Sanding Pads

Fullsized(hook&loop)sandingpadsanddiscsthatareusedwiththe#7800orbitalstylevacuumsander.Usedinthesandingoftheacousticalboardandthebasecoat.Soldinfive(5)sandingdiscsperpack.Thepowerpadstheysticktoaresoldindividually.

80grade:sandingtheacousticalboard220grade:sandingthebasecoats

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TOOLS&EQUIPMENT

Listed below are typically the tools and equipment you will need to install the Fellert system. USE ONLY TOOLS AND EQUIPMENT AS DISTRIBUTED OR RECOMMENDED BY FELLERT.

Tools for attaching C channel:A. Screw gun B.Straightcuttingsnippers(belowpictureforexamplepurposesonly)

Tools for mixing and applying Fellert Adhesive:C. Bucket D.PaddleE. Drill F.6mm(¼”)notchedtrowelG.Scoop

Tools for cutting Fellert Acoustical Board:H.Knife-IdealforcuttingandtrimmingFellertAcousticalBoard,soldbyFellert.

A B

C D E F

G

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TOOLS&EQUIPMENT

Tools for detailed cutting & installation of Fellert Acoustical Board:I.TapemeasureJ.T-squareK.Scissors(notpictured)L.SmallutilityknifeM.Sprayadhesive(mayusedouble-sidedtapewhenapplicable)N.SandingspongeO.PuttyknifeP.JointknifeQ.TapeR.Chalklinereel

I J L M

N O P Q

R

Tools for applying Fellert Primer:S.PaintBrush

S

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TOOLS&EQUIPMENT

Fellert Whisk

OnlytheFellertMixingPaddlecanbeusedtomixtheFellertPlaster.Theproductmustbemixed to an even consistency.

DonotleavethepaddleintheFellertPlasterafterinitialmixing,removeandrinseoff.

FellertWhiskissoldbyFellert.

Flat Base Mixing Container

Usewhiteornaturalcoloredplasticmixingcontainerswithaflatbase.

200L(55gal)containerssoldbyFellert.

Graco RTX 1500

TheonlyrecommendedspraymachineforinstallingtheFellertsystemistheGracoRTX1500.Theunitisportableandrelativelysimpletouse.Thisselfcompressingportableelectricunithasa55L(15gal)capacityhopper.TheGracoRTX1500comeswith7.5M(25ft)ofhoselengthandastandardspraygun.

GracoRTX1500issoldbyFellert.

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TOOLS&EQUIPMENT

Fellert Trowel

UsedforapplyingtheFellertPlaster.TheFellertTrowelisalsousedininstallingtheFellertAcousticalBoard.Usuallyapplicatorshavetwosetsoftrowels:onefortheboardinstallationandonefortheplasters.

TheFellertTrowelissoldbyFellert.

Flexible Finishing Trowel

This1mmthickplastictrowelisalotmoreflexibleallowingthefinishingtrowelpassestocloseintheplastersurfacewithlesseffortonthefinishingpasses.Thesewillbeextremelyhelpfuloncurvedandradiussurfaces.TheFellertTrowelisstillusedtocloseintheplastersurfaceoncesprayedandtoremovetheexcessplasteronthesurface.

280mmlongx120mmwidex1mmthick

*different colors but same trowel

Flexogrip Trowel

Availablein800mmand1200mm.

UsedforapplyingtheFellertplaster.ItisimperativethatyouonlyusetheFellertFlexogripTroweland/orthestandardFellertTrowelshownbelow.

TheFlexogripTrowelissoldbyFellert

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TOOLS&EQUIPMENT

Usedmixingdrillsthatcanoperateataminimumof300rpm.

Suitabledrills:

Makita DA4031DeWalt DWD460KMilwaukee 1676 (Holehawg)Flex R 500 FR Festool MX 1000

Porter Cable 7800 “Orbital” Vacuum Sander - North America Only

UsedforsandingtheFellertAcousticalBoardsubstrateandtheFellertAcousticalPlasterbasecoat.Youmustusethefullsizehookandloopsandingdiscsandpadscompatibleforthe7800modeltoensureconsistentsanding.

SanderandvacuumaresoldbyFellert.

Festool Long-reach sander PLANEX LHS

UsedforsandingtheFellertAcousticalBoardsubstrateandtheFellertAcousticalPlasterbasecoat.Youmustusethefullsizehookandloopsandingdiscsandcompatiblepadstoensure consistent sanding.

SanderandvacuumaresoldbyFellert.

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TOOLS&EQUIPMENT

Graco Fine Finish Kit

Consistofanextendernozzle,4outerspraytips(A,B,C,D),andacovercap.TheattachmentsarenecessarytocreateacontrolledfanspraypatternforthefinishcoatsofFellertplaster.Partialcontentofthekitispicturedright.Theextendernozzlekit“FineFinishKit”screwsontothestandardGracospraygun,picturerightbelow.GenerallyyouwillusethefinefinishkitonlywhensprayingtheFellertfinishcoat.

Graco Spray Gun

AttachsprayguntospraymachineforinstallingFellertsystem.Sixstandardsizeorifices(Sizes 3, 4, 6, 8, 10, & 12) areincludedwiththeGracospraygun.

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CHECKLIST

Sold Only by Fellert• PlasticCChannel• FellertAcousticalBoard• FellertSpringWashers• FellertBoardAdhesive• FellertAlcroPrimer• FellertEvenBetter1-basecoatforall

andfinishcoatforSecern• FellertEvenBetter2-finishcoatforSahara&Silk• FellertMixingPaddle• FlexogripTrowel• Fellert Trowel• FlexibleFinishingTrowel• Knife

Available to order by Fellert• SandingPads–80&220grit• 6mm(¼”)notchedtrowel• FellertMixingPaddle• PorterCable7800“giraffe”vacuum

sander • MakatiDA4031Drillwith300rpm• 200L(55gal)whiteornaturalplastic

mixing containers • GracoRTX1500Spraymachine• Finefinishspraykit• 50mm(2”)Self-Adhesivemeshtape• 122cm(48”)mesh(forvertical

applicationsbelow3M(10ft))• Powerpad

PRIORTOSTARTINGANYINSTALLATIONVERIFYTHATYOUHAVETHECORRECTMATERIALS,TOOLSANDEQUIPMENTFORYOURPROJECT.

Sundry items• maskingtape• plasticmaskingfilm• floorprotectionifapplicable• rags(usewhitecoloredragsonly)• 400gritsandpaper/sandingsponges• brushesforprimer• dustmasksandrespirators• trashbags• drywallscrewstoattachplasticC

channeltostudwork

Typical tools and equipment• Screw gun• Straightcuttingsnippers• Smallplasticbreakawayutilityknifes• tapemeasure• ChalkLine• straightedge• Measuringbuckets• Fivegallonbuckets

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PRINCIPLESOFINSTALLATIONFellert Acoustical Board & Substrate Preparation

1. GWB -TheGWBsubstratemustbe“sealedairtight”toalevelonefinish.AllHVAC,electrical,firesprinklerandotherpenetrationsshallbesealedwithtraditionaldrywalltapeoraself-adhesivefiretapetopreventairmovementbetweentheoccupiedspaceandtheplenum.

ScrewtheplasticCchanneltrimintotheperimeterwall400mmc/c(16”o.c.)studdingandnottheceiling.

It’snotrecommendedtousetheCChanneltrimonexposededgedetails.(i.e.soffits)

Usethestraight-edgedsnipperstobendtheplasticCchannelaroundanycurvesandangles.

Fortightercurvesaplasticflexiblearchwaybeadmaybeused.

FortheFellertCaparolAdhesive,mixcontentsofbagwithapproximately5-6litersofwater.Allowtosetfor5minutesandremixpriortouse.

FortheFellertStyrobondAdhesivemixcontentsofbagwithapproximately1.5gallonsofwater.Allowtosetfor5minutesandremixpriortouse.

Youmustremixtheadhesiveafterthesettimeaswithmostcementbasedproducts.

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WhereverpossibleinstalltheFellertacousticalboardssothelongestrunsofjointlinesflowintoandawayfromthestrongestsourceoflight.Thisprocessisdeemeda“bestpractice”onlyandnotanabsoluterule.Itisasimpleandalogicalapproachtohelpminimizeanyshadowingeffectswhichcanbeexacerbatebycriticallighting.

Markastraightlineforyourstartingpointtoensurethatthefirstrunofacousticalboardswillbestraightaspossible.

OnanyboardsthatwillslotintotheplasticCchannelyouneedtobeveltheedgebytrimmingthebackedgeofthefiberglassboardasthiswillenableiteaseintothechannel;keepthesesliversforjointpreparationwork.

EnsurethepresslinesonthebackoftheFellertacousticalboardallflowinthesamedirectionduringtheinstallation.Theselineswillflowperpendiculartothelongrunsofjointlinesasdepicted.

ApplytheFellertAdhesivetothebackoftheboardevenly.Donotleaveanyspotsuncoveredandensureyouapplytheadhesiveallthewaytotheedges.

strongest source of light

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Finishofftheadhesiveapplicationbystraighteningthe6mm(¼”)notchedlines.Thiswillensureanevenlayerofadhesiveonthedrywallceiling.

Ensurenoadhesivegetsontothesidesorthefaceoftheacousticalboard.

SlottheFellertacousticalboardintotheCchannelwithoutexertinganysignificantpressureandusetheFellertTroweltosteadytheboardasyoupositionitcorrectly.

UsetheFellertTroweltoapplyfirmpressuretosecuretheacousticalboardintoplacefor1-2minutesastheadhesivebeginstoset.

WhenapplyingadhesivetotheboardensurenottogetanyFellertAdhesiveonthefaceoftheboard.

Useroundtemporarywashers,asshown,toholdtheboardinplaceuntiladhesivecures.WashersareoftenusedonsitebyapplicatorstotemporaryleveloffanyunevennessinthejoiningoftheFellertAcousticalBoard,especiallyoncurvedsurfaces.

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Asyouprogresswiththeinstallationoftheacousticalboardsyoumayhavetoperiodically“straightentheline”asdepicted.TheFellertAcousticalBoardsaremanufacturedtoatoleranceof3mm(1/8”);therefore,thisstraighteningprocessis normal.

Useastraightedgetoensureacutisstraightaspossible.Thisinsuresagoodboardinstallation.

Applythe50mm(2”)self-adhesivemeshtapetobridgetheplasticCchannel,plastictrims,drywallrippersandboardtransitionstoothersubstrates.

MixtheFellertAlcoPrimerwiththesandadditive.Ensuretocoverallofthechannel,plastictrim,drywallripperorboardtransitionincludingthemeshtapewiththeprimer.ItisrecommendedtobrushapplytheFellertprimerinacontinuousdirection.Removeanysandgrainsfromtheplasterstopflangeofanytrimpieces.

ImportantFellertAlcoPrimerapplicationinstructions:EnsurethattheAlcroprimerdries12hourspriortotheplasterapplication.

ForGWBorlevel4preppedsubstrate:Usea½”naprollertoapplytheAlcroPrimertothelevel4preppedsubstrate.Ensurethe Primercovers100%ofthesurface.

Fortrim/substratetransitions: Usea2”½naprollerora2”longbristlebrush.Whenusingabrushensuretoonlybrushinone directiontopreventthemeshtapefrommovingandbubbling.Covertheentiretrimandmesh tapesurfacetoensuretheplasterwillbondadequatelyandprovideasecuretransition.Always wipethesandadditiveofftheplasterflangetoprovideacleanappearancewhencompleted.

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Removemaskingtapewhencomplete.LeavetheFellertPrimertodryovernight.NeverapplyFellertPlasterandPrimerthesame day.

Fillinwhereyouhaveanygapsbetweentheacousticalboardswithwasteoffcuts.AnygapsbetweentheFellertAcousticalBoardsthatexceed0.8mm(1/32”)shouldbesplicedwithacousticalboard.

Ensurethesplicedmaterialiswedgedverytightlyintoanygapandcutflushinpreparationforsanding.YoucanusethebeveledcutshavingsfromtheboardsthatwereinsertedintotheCchannel.Itiscriticalthattheboardsareinstalledandpreppedcorrectly.

Removethebristleguardfromthevacuumsandersothatthebristlesdonotrestrictanysandingtothesurfacesandpreventsdamagetotheboardandbasecoatlayers.

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Sandtheentiresurfaceoftheacousticalboardinagradualcircularmotiontoensuretheboardjointsaresandedflushand all variances are sanded out, i.e.eliminatingvalleys,“lowpointsorlines”intheboardsubstrate.Use80gritfullsizesandingdiscpads.Thecompletedboardinstallationshouldappeartobeconsistentwithnovariancesinthickness.Ensurethecriticallightingisinplacepriortosandingtoensure any variances are sanded.

AlwaysapplythefirstlayerofFellertplasterwithin24hoursofinstallingtheacousticalboardprovidinganyapplicationofFellertprimerhasfullydried.

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B. Ceiling Grid 400mmc/c(16”o.c.)(noGWB)Thistypeofsystemiscommonlyreferredtoasthedirect-to-gridapplication.YoueliminatetherequirementofaGWBsubstratebyattachingtheacousticalboarddirectlytothe400mmc/c(16”o.c.)drywallgrid.

02/06/14

*General Notes: Not to Scale. This detail should be included in the project mock-up.

Fellert ABKyrkängsgatan 6, 50338 Borås, SwedenPhone: +46 33 430 23 10Fax: +46 33 430 22 19Email: [email protected]: www.fellert.com

5.2 Direct Attachment to Ceiling Grid with Air Gap (No GWB)

5.2

DIR

EC

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GW

B)

Drywall ceiling grid (for typical GWB application) @ 400 mm c/c (16” o.c.) (by others)

Fellert Acoustical Board 25 mm (1”) or 39 mm (1.5”)

Fellert Stainless Steel “Spring” Washer 50 mm (2”) Fellert Zincotech ZN screw

Fellert Acoustical Plaster approx. 3 mm (1/8”) thick

Fellert C Channel

GWB (by others)

6 mm (1/4”) Air Gap for proper air flow (insert backer during installation to allow constistent gap)


Fellert Primer

Fellert C Channel

Fellert Acoustical Plaster approx. 3 mm (1/8”) thick

A

A

Hanger Wire (by others)

Splay Wire (by others)

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WheninstallingtheFellertsystemdirect-to-grid,itisrecommendedtoleavea6mm(¼”)airgapalongthewallperimeter.Thisisaccomplishedbyinsertinga6mm(¼”)solidspaceralongthewallperimeter.Typically,apieceof6mm(¼”)GWB(orwoodtrim)actingasaspacer,willcreateanconsistentgap.ThenattachtheFellertC-Channeltotheceilingframingagainstthespacer.InstalltheFellertsystemandremovetheGWBspacerwhencomplete.

AnalternativeoptiontotheCChannel,wouldbetouseaselffinishedLtrimaftertheboardisinstalled.ReferenceTrim-Tex3510for25mm(1”)boardor3650for39mm(1.5”)board.

Basic Installation Steps

1.Screwwashertogridsoheadisjustbelowsurface.Alternateboardedgeswhenscrewingintoframingattheboardjointstokeeptensionconsistent(notinthejoint).

2.CutaroundFellertSpringWasher.Donotcuttoodeeporwasherswilllosetension.

3.Pullandtuckboardflushtothesurface.

4.Applyapre-fillofbasecoatwithahandtooltotheFellertSpringWashercutslitsandleavetodry.Spraythebasecoatasnormal.

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16’ x 16 (256sqft)4.9m x 4.9m (24m2)

ceiling grid at 16” o.c.400mm

example of Fellert Spring Washer layout

(washer size enlarged for viewing purposes)

ceiling grid

spring washer

C channel

206 washers used in 256sqft.23.75m2

1 washer every 1.24 sqft avg.0.12m2

Fellert Spring Washer Layout(washersizeenlargedforviewingpurposes)

ceilinggridat400mmc/c(16”o.c.)

256sqft(16’x16’)24M2(4.9Mx4.9M)

206washersusedin24M2(256sqft)

1washerevery0.12M2avg(1.24sqft)

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ApplytheFellertPrimertothedrywallsubstratewithashortnaproller.

C. Plaster onlyNoFellertAcousticalBoard

WhenyouareapplyingtheFellertEvenBetter1directlytoadrywallsubstratetherearefollowingrecommendationstonote:

• Ensurethedrywallsubstrateispreparedtoatleastalevel4standard.• ApplytheFellertPrimer(withsandadditive)withabrushandroller.• Leaveovernighttodrypriortoapplyingthebasecoat.• Spraythenextplasterlayerasnormal.

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PRINCIPLESOFINSTALLATIONCoverage Rates & Mixing Guide

Product Size Coverage WaterFellertCaparolAdhesive 25 kg

(55lb)10M2

(110sqft)5-6L

(1.3-1.6gal)FellertNorthAmericaAdhesive(StyrobondII)

23 kg(50lb)

7M2(75sqft)

5.7L(1.5gal)

FellertPrimer(Cchanneledging) 4 L 56 LM(185lft)

N/A

FellertPrimer(directdrywall) 4 L 24 M2 (260sqft)

N/A

FellertEvenBetter1(basecoat)calculated waste: 5%

5 kg 10M2(100sqft)

9gal(34L)

FellertEvenBetter1Finish(Secern)calculated waste: 5%

5 kg 15-30M2(150-300sqft)

9gal(34L)

FellertEvenBetter2Finish(Sahara)calculated waste: 5%

5 kg 40 M2(430sqft)

7gal(26.5L)

FellertEvenBetter2Finish(Silk)calculated waste: 5%

5 kg 20 M2 (200sqft)

8 gal(30.2L)

COVERAGERATESAREAVERAGESANDMAYVARYACCORDINGTOPROJECTCONDITIONS. 1.Put34L(9gal)ofwaterintoalargecleanmixingcontainerforFellertEvenBetter1.Use30.2L(8gal)fortheFellertEvenBetter2.Recommendusingaclearorwhitecoloredplasticcon-tainerformixingtheplaster.Youcanadd1.9L(½gal)ofwaterifdeemednecessaryfordesiredconsistency.

2.Ifacustomcoloredfinishisrequiredaddcolorantvialtothewaterinthemixingcontainer,rinsethecolorantvialcleanandmixwellwiththewater.Fellertrecommendsthatbothcoatsofplasterbetinted.However,insomecasesitispossibletoonlytintthefinishcoatonverylightcolors.YourFellertagentwilladviseyouifthebasecoatshouldbetintedornot.

3.AddFellertPlastertowaterandmixuntildesired(oatmeal)consistency.Donotovermixasthismaycauseexcessiveclumpingofthematerial.Shouldonlytake3-4minutestomixtheplaster.

4.Leaveplastersetfor30minutes;thisistoletthecottonfibersexpandsoyoucanspraythematerialwithoutexcessiveclogging.

5.Remixtheplasterafterthesettimepriortospraying.

6.UsetheFellertWhiskwithmixingdrillspeednotexceeding300rpm.

7.NotethatahigherconsumptionrateofEB2plastermayoccurwhendoingtheSaharafinishinmid to dark colors.

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PRINCIPLESOFINSTALLATIONApplication of Standard Finishes

Forthebasecoatapplication,use#10Gracoorifice. Youwillnotusetheextendernozzleandouterspraytipwhensprayingthebasecoat.

SetthematerialflowcontrolontheGracoRTX1500spraymachinetothefollowingsettings:

• The4thdotforthebasecoat.• The3rddotforthefinishes.

Adjusttheairflowvalveasneeded.

A. EB1 “Basecoat” PlasterColoredfinishes:addandmixtintvialtothewaterinthemixingcontainerpriortoaddingandmixingthebaseplaster.Usetintguidelinesoutlinedonpage27.

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UsesandpapertoslightlyroundthecornersandsmooththeedgesoftheFellertTrowel.

TheobjectiveistosprayandtrowelthebasecoatontotheFellertAcousticalBoardat3mm(1/8”)wetthicknessasthedrythicknesswillbeapprox.1.5mm(1/16”).

Sprayinasmallcircularmotionapproximately3M2(30sqft)andhaveapplicatorsstarttotroweltheplaster.

Startsmoothingofftheplasterinneartheedges.

PositiontheFellertTrowelatalowangleandfirmbutnotexcessivepressureonthebasecoat.

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Itiscriticalyouonlytrowelthebasecoatplasternomorethan3–4timesasdepictedonthepicture.

Themoreyoutrowelthemoreuneventheplastersurfacebecomes.Donotexcessivelytrowelthebasecoatplaster.

Thisisthebasecoatbeinghandtroweled.

Leavetheminortrowellinesorimperfectionsonthesurfaceastheywillbesandedsmoothwhendry.

Allowthebasecoattofullydry.Thiswilltakeanaverageof2-3daysinmildconditions.UsefansinthedryingprocessandensuretheHVACisoperationalortheairintheareaisbeingrecirculated.

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Resin Spots: MustbetreatedbycuttingintotheaffectedbasecoatandFellertAcousticalBoardtoremovetheresindeposit.Filltheextractedareawithnewboard,basecoatandsandwhendry.

“Quick Patch” method: SprayasingleFellertAcousticalBoardatthesametimeyouapplythebasecoat.Oncedry,plug-intheextractedareawiththepre-sprayedboard.Lightlysand,fillwithbaseplasterandproceedwiththefinishcoat.

ThisisNOTaresinspot.

AnypotentialresinspottingmatterwillnotbevisibleontheFellertAcousticalBoardsurface.

Pre-fillingofanyjointsorvariancesinthebasecoatisveryimportant.SpotapplyEB1toanyrippers,beads,boardjoints,etc.asneededandletdry.Whendry,sandoutanyridgelinesorsurfaceunevennessfromthebasecoatapplication.Sandtheentiresurfaceofthebasecoatwith220gradesanding discs.

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Thematerialflowwouldnormallybesetthe3rdascendingdotontheGracoRTX1500.MixuptheEB1finishcoatinthesamemannerasthebasecoat.

Theobjectiveistospraythefinishdesiredtextureapprox.1.5mm(1/16”).Completetheentiresurfacecorner-to-cornerwiththeEB1finishinoneapplication.Leavetodry1-2days.

FortheEB1finishcoatuse#8orificewiththesecondlargestouterfanspraytip(C)nearright.Youmayneedtoadjustthecomponentstomatchthedesiredtexture.SomeapplicatorsprefernottousethefinefinishkitwhencreatingaNaturalfinish—the golden rule is to match the mock-up.

CompletedSecernfinish-the golden rule is to match the mock-up.

Drythicknessoftheplasterfinishwillbeapprox.3mm(1/8”).

B. EB1 “Finish” Plaster for SecernColoredfinishes:addandmixtintvialtothewaterinthemixingcontainerpriortoaddingandmixingthefinishplaster.Usetintguidlinesoutlinedonpage28.Useplasterthesamedayofmixing.

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TheobjectiveistospraytheEB2finishontothebasecoatleavingafinesprayedtexture,at1.5mm(1/16”)wetthickness.

Sprayconsistentandeliminatespatteringonplastersurfaceleavetodry1-2days.Drythicknessoftheplasterfinishwillbeapproximately3mm(1/8”).

FortheEB2finishcoatusesize3orificewiththesmallestouterfantip(A).Thematerialflowwouldnormallybesettothe4thascendingdotforfinetextureand5thascendingdotformediumtexture.Theairventisfullyopenandthematerialflowcontrolonthespraygun(seepicture)issettobealmostclosed.(Whenitisinaccuratepositionyouwillonlygetaspraymist,withoutanysplattering.)

C. EB2 “Finish” Plaster for SaharaColoredfinishes:addandmixtintvialtothewaterinthemixingcontainerpriortoaddingandmixingthebaseandfinishplaster.Usetintguidlinesoutlinedonpage28.Useplasterthesamedayofmixing.

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FortheSilkfinishusesize6orificewiththesecondlargestouterfanspraytip(C)nearright.ThematerialflowontheGracoRTX1500wouldtypicallybesettothe3rdascending dot.

MixtheSilkwith34L(8gal)ofwater.

SpraytheEB2Silkplasterontothesurfaceapprox.3mm(1/8”)wetthicknessandtrowelsmoothaspossible.Donotovertroweltheplaster.HavetwoapplicatorstrowelingtheSilkplastersmoothimmediatelyuponspraying.Closinginthesurfaceandremovingtheexcessplaster.Astheplastertakesup(surfacemoisturedecreases)youmayneed2-3separatepasseswiththetroweloverthesurfaceinordertoachieveaconsistentfinish,approx.4-5minuteinbetweenpasses.

TheSilkfinishconsistsofabaselayerofEB1andafinishcoatofEB2plaster.Sandthebaselayerapplicationwitha220gritsandingdiscandsandingsponges.Oncesandingiscompleteallimperfectionsshouldbeeliminatedincludinganyboardjoints,holes,ortrimdetails.

D. EB2 “Finish” Plaster for Silk Coloredfinishes:addandmixtintvialtothewaterinthemixingcontainerpriortoaddingandmixingthefinishplaster.Usetintguidlinesoutlinedonpage28.Useplasterthesamedayofmixing.

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CompletedSilkfinish—the golden rule is to match the mock-up.

DrythicknessofFellertSilkfinishwillbeapproximately3mm(1/8”)thick.TheSilkfinishisintendednottobesanded.

HavethirdapplicatormakeafinalpassovertheEB2Silkplasterwithin15–20minutesoftheinitialapplication.

Thiswillensureaconsistentlysmoothhand-craftedfinish

EnsuretokeepyourtrowelscleanatalltimesduringthetrowelingoftheSilkplasterbyconstantlywipingwithdamprags.

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PRINCIPLESOFINSTALLATIONVertical Surfaces

Asanoptionfiberglassmeshcanbeusedforverticalsurfacesorareaswhereimpactisaconcern.

PropertiesofthemeshthatFellertsuppliesare:• 1.22M(48”)widefiberglassmesh• 128grams(4.5oz)persquareyard• clear in color • .08mm(1/32”)thickness

Belowisanexampleofhowtoemploythe1.22M(48”)meshwithFellertonaverticalapplication.

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PRINCIPLESOFINSTALLATIONVertical Surface

Troweltheplaster1–2times.Youwillvisuallynoticethemeshwithinthebasecoat.

Sprayapproximately30%ofthebasecoatoverthemeshimbeddedbasecoatandlightlytrowel.

Youstillmaynoticethemeshstillatthispointespeciallyasthebasecoatproductisstillwet.

Leavethebasecoattofullydry,lightlysandandproceedwiththefinishcoatasnormal.

Applyapproximately70%ofthebasecoatasnormaltothesurface.Placeeachverticallengthofmeshasyouproceedalongthelengthofawallsprayingbasecoat.Donotoverlapthemesh.Tryandbuttthelengthsastightaspossible.Asmallgapof1.3cm(1/2”)isacceptable.

Sprayadditionalbasecoatplasteroverthesurfaceofthemeshtocompletetheappropriatethickness.

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PRINCIPLESOFINSTALLATIONCurved Surfaces

Whenestimatingprojectsthathavecurvedshapes,itisadvisabletoallowfortheapplicationofanadditionalbasecoatofFellertplaster,EB1basecoatforallfinishes.Thisadditionalcoatwillassistinachievingarelativelyevenbaselayer.

AnexampleofacurvedceilingdonewiththeFellertisdepictedbelow.Anapplicationoftwo(2)coatsofFellertAcousticalPlasterEB1BasecoatwasundertakenpriortotheapplicationoftheFellertSaharafinish.

Youwillachieveslightlymoreflexintheboardbycutting1.3cm(½”)every5cm–7.5cm(2”–3”)intotheboardfromtherear.UsetheFellertSpringWashersorotherdiscshapedwasherstoassistyouwithtemporarysecuringtheacousticalboardtothedrywallsubstrate.

InstallationofcurvedsurfacesistobedonewiththeadheredtoGWBmethod.

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PRINCIPLESOFINSTALLATIONCustom Color and Techniques

Multi-Color

Severalcolorscanbeincorporatedintotheacousticalfinishtocreatecustomdesigns.

TheSecern,Sahara,andSilkfinishesareavailableincustomcolors.AllcustomfinishesmustbemadeandapprovedbyFellert.

Duringthemixingprocessthecolorantismixedintothewaterpriortotheadditionoftheplasterproduct.Forapplicationswithcolorsofmoreintenseordeepcolorsitwilltendtohavemoremottlingoracolorvariancethroughouttheceilingsinceitisahandappliedplaster.Ifalighterormoremediumtoneofblueischosenthemottlingwillbeconsiderablylessbutwillalwayshaveaslightcolorvariance.Allcustomfinishtechniquesneedtobeapprovedbyallpartieswithamock-uppriortoinstallation.

AllcustomsamplesmustbemadebyFellert.

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PRINCIPLESOFINSTALLATIONKey Installation Notes

• Obtaintheapprovalofamock-uppriortocommencingwiththeinstallation—thegoldenrule of Fellert.Mock-upapprovalisFellertpolicyandisintheproductspecifications.

• Alwaysstagesufficientlightingtoilluminateworkareaasifduplicatingthetruecriticallightingenvironment.

• KeeptheFellertAcousticalBoardintheboxesuntiltheyreadyforinstallationtoensureedgesareprotectedfromdamageandexposuretosunlight.Alwaysstoreflat,donotstackon edge.

• Applytheadhesiveevenlytothebackoftheboard.

• Ensurethemanufacturingpresslinesonthebackoftheboardremainincontinuityonthesubstrate.

• IfpossiblealignthecontinuousjoinlinesofFellertAcousticalBoardstowardsthestrongestsourceoflight.

• Fillinboardjointgapsmorethan0.8mm(1/32”)widewithFellertAcousticalBoardsplices.

• SandtheentiresurfaceoftheFellertAcousticalBoard,notjustthejoints.

• Removetheprotectivemaskingtapeafterprimingthetransitionsandre-maskaccordingly.

• AlwaysleavetheFellertPrimertodryovernight.

• Donotovermixtheplaster.Addthecorrectamountofwatertoachievedesired consistency.

• AlwaysusetheFlexogriporFellertTrowel.

• Donotexcessivelytrowelthebasecoat,lessisbetter.

• SpotapplyEB1toanyrippers,beads,boardjoints,etc.asneededandletdry.

• Leavebasecoatuntilfullydrywhichisapprox.2-3daysbutmaybequickerwithforcedair.

• Alwaysspraythefinishplastercorner-to-cornerandsprayinanirregularpatterntoeliminateplastercoldjoints.

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HEALTH&SAFETYRECOMMENDATIONS

• Whenmixinganyofthedrypowderproductsweararespirator.

• WhenhandlingandinstallinganyFellertacousticalpanelsorothersystemcomponentsfollowregionalgovernmentenforcedhealthandsafetycodesincludingOSHA.

• WhenusinganyoftheFellertproductswearprotectiveclothingandavoidcontactwithyourskinwheneverpossible.

• Weareyeprotectionatalltimes.Ifeyecontactoccursirrigateeyewithcleanwaterandseekimmediatemedicalattention.

• Ifanyofthematerialsareswallowed,seekimmediatemedicalattention.

AllcurrentMSDSdocumentsareavailableonline.

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FINALAPPEARANCESTATEMENT

TheFellertAcousticalPlastersystemisdesignedtobeanacousticalsoundabsorptionsystemwitharchitecturalaestheticdesigncapabilities.Thevisualappearanceisintendedtobeamonolithicandnaturallookinghand-craftedplaster.

Astheplasterissprayedandhandtroweledproduct,itallowssoundtobeabsorbedwhileretaininganattractive,wall-to-wallseamlessappearance.

ThefinalappearanceofanyTextured,FineTextured,orSmoothfinisheswillvaryslightlythroughouttheexpanseofthesurfaceaswithanyhand-craftedplaster,especiallyundercriticallightingconditions.Theproductshouldbemonolithicandnaturalplasterlookinginfinalappearance.

AsperFellertpoliciesandspecifications,anapprovedprojectmockupisrequired.

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DRYSTAINS-ALLFELLERTFINISHES(NON-SOLUBLE)

Commence with step 1. Proceed to the other steps if needed.

Step #1Trybrushingthestainwithasoftuncoloredbrush.

Step #3Spraywatermist.

Step #4SaharaandSecern-formthesurfacetothedesiredappearancebyusingafirmbrush.

Silk-formthesurfacetothedesiredappearancebyusingasoftspongeoraplastictrowel.

Step #2Vacuumwithsoftbrushnozzle.Ifthereareremainingstains,lightlyscrapecarefullywithasharpedge.

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SOLUBLESTAINS-ALLFELLERTFINISHES

Step #1Dampasoftspongewithfreshwater.Pressthespongeonthestainandletthewatersoakintothesurface.Releasethepressure,lettingthewatersoakbackintothesponge.Rinsespongeandrepeatifnecessary.

Step #2SaharaandSecern-formthesurfacetothedesiredappearancebyusingafirmbrush.

Silk-formthesurfacetothedesiredappearancebyusingasoftspongeoraplastictrowel.

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HOLES,DAMAGES,&WATERDAMAGEDAREAS1. SILK

Step #1Cutoutthedamagedarea.Replacedamagedacousticalboard.Ifpossible,useanacousticalboardpreparedinadvancewithEvenBetter1plaster.Ifnot,buildupanEvenBetter1layerandleavetodry,byfillingthescratchwithasmallamountofEvenBetter1plaster.Moistenedgeofexistingplasterpriortoapplication.Useplasterwithsamebatchnumberastheoneusedfortheceiling.

Step #2SprayEvenBetter2plasterontherepairedareatothedesiredappearance.Moistenedgeofexistingplasterpriortoapplication.Handtroweltheplasterifnecessary.Leavetodry.Lightlysandwith400gritsandpaperandsoftsponge(moistenplasterwithwater),ifnecessarytoblend.

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HOLES,DAMAGES,&WATERDAMAGEDAREAS2. SAHARA


Step #2Inacircularmotion,sprayEvenBetter2plasterontherepairedareatothedesiredappearance.Moistenedgeofexistingplasterpriortoapplication.Leavetodry.Lightlysandwith400gritsandpaperandbrush(moistenplasterwithwater),ifnecessarytoblend.

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HOLES,DAMAGES,&WATERDAMAGEDAREAS3. SECERN


Step #2SprayEvenBetter1plasterontherepairedareatothedesiredappearance.Sprayincircularmovements,thinnerandthinnertoconnectthenewandtheoldsurfaces.Leaveto dry.

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TYPICALCONSTRUCTIONDETAIL

Customdetailsareavailableuponrequest.Installerisresponsibleforinstallationandtoensurerelevantdetailsareincludedintheprojectmock-up.Visitwww.fellert.comtoaccessallFellertconstructiondetails.

02/06/14

*General Notes: Not to Scale. This detail should be included in the project mock-up.

Fellert ABKyrkängsgatan 6, 50338 Borås, SwedenPhone: +46 33 430 23 10Fax: +46 33 430 22 19Email: [email protected]: www.fellert.com

Ceiling to Wall Interface with GWBFully Adhered System

5.1

5.1

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Fellert PrimerFellert C Channel Fellert Acoustical Plaster

approx. 3 mm (1/8”) thick

Drywall ceiling grid (for typical GWB application) @ 400 mm c/c (16” o.c.) (by others)

Fellert Acoustical Board 25 mm (1”) or 39 mm (1.5”)

GWB (by others)

GWB (by others)

Fellert Adhesive

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NOTES

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fellert acoustical plaster acoustical plaster installation guide 5.1 fellert acoustical ceilings ab...

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