section 4 - barbour product search...ground loors 41 technical advice and support centre 0144 66666...

Section 4.1Ground Floors

Below slab

Product: Polyfoam ECO Floorboard Gf01

Suspended concrete floor

Product: Polyfoam ECO Floorboard

Above slab

Product: Polyfoam ECO Floorboard

Gf03

Gf04

Above slab

Product: Earthwool Thermal Floor Slab Plus

Gf02

Suspended concrete floor

Product: Earthwool Thermal Floor Slab Plus

Gf05

Suspended timber floor

Product: Earthwool Loft Roll 44 / 40

Gf06

Underfloor heating - Standard system

Product: Polyfoam ECO Floorboard Gf07

Suspended timber floor

Product: Earthwool Flexible Slab

Gf08

4.1 Ground Floors

Technical Advice and Support Centre 01744 766666 www.knaufinsulation.co.uk204

Ground floorsGround floor design

GeneralWhen designing a ground floor the following should be considered in addition to the achievement of the desired U-value.

• Appliedfloorloading

• Positionoftheinsulationwithinthe floor structure

• Minimisingthermalbridging,airleakageandpreventingcondensationforming

IntroductionGround bearing floors can include insulationeitherbeloworabovetheconcreteslab,dependingonthechoiceofthedesigner.Iftheinsulationisinstalledbelowtheslab,thisincreasesthethermalcapacityofthebuilding,helpingtomaintainsteadyinternaltemperatures.Ifinsulationisinstalledabovetheslab,thebuildingwillrespondmuchmorequicklytotheheatingsystem.Suspendedfloorsareusuallyinsulatedinsuchawaythattheyofferreducedthermalmassandrespondquicklytotheheatingsystem.Inthecaseofsuspendedconcrete,theinsulationisinstalledabovethedeck,eitherunderascreedortimberboarding.Suspendedtimberfloorsarenormallyinsulatedbetweenthejoists.Floorinsulationisofparticularimportanceif installing underfloor heating. The use ofchannelled rigid insulation boards cancombine the function of floor insulation andhousingfortheheatingpipes.

AppliedfloorloadingAllmaterialsarecompressedunderload.Insulationmaterialsusedunderslabs,screedsandchipboardshouldbecapableofaccommodatingtheappliedloadswiththeminimumofcompression.

Standardised values are available to the designerforthedeadloadsappliedbybuildingcomponentsandtheestimatedactiveloadsforvarioustypesofbuildinguse.Theseformthestructuraldesignrequirementsofthefloor,butare of less value when considering the compressionresistancerequirementsofthefloorastheactiveloadsarelikelytobelocalisedorpointloads,notuniformlydistributedloads.

Position of InsulationAswaspreviouslystated,thepositionoftheinsulation in the floor has an influence over the thermal characteristics that the floor brings to thebuilding,howeveritalsohasrelevancewhenconsideringtheactiveloadsthatapplyduetotheuseofthefloor.Obviously,intimberjoistfloorswheretheinsulationmaterialisplacedbetweenthejoiststheentireloadiscarriedbythejoistsandthereisnoloadontheinsulation.However,wheretheinsulationisbelowaslab,screedortimberboardstheentireload is acting on the insulation.

Pointloadsarespreadbythelayersabovetheinsulation so that the load acting on the insulationislowerthantheloadappliedtothefloorsurface.Thespreadofaloadisafunctionofthedepthofthelayerabovetheinsulation.Thismeansthatapointloadappliedtoafloorwheretheinsulationispositionedbelowathinscreedwillresultinahigherappliedloadonthe insulation than where the insulation was positionedbelowathickerfloorslabbecausethe load is bearing on a smaller area of insulation under the screed. Of course the differingdeadloadappliedbythescreedandthe floor slab should also be allowed for when calculatingthetotalloadappliedtotheinsulation.

Active and dead loadsTheactualappliedfloorloadactingontheinsulationmaterialhastwocomponents:

• Thedeadload,whichisduetotheweightofthematerialslaidontheinsulant,and

• Thedesignloadassociatedwiththeuseofthe floor

Forspecificapplicationstheguidanceandrecommendations contained in BS EN 1991-1-1:2002andBSEN1990:2002+A1:2005shouldbefollowed,andthiswillhelpthedesigner ensure that the strength of the floor will besufficienttosupportanyappliedloadsoverthe loaded area.

Thedesignermustalsoconsiderthedynamicloadsandhowtheyareapplied.

Inrealitytheloadsassociatedwiththeuseofthefloorwillnotbeapplieduniformly.Infactmanyloadsareappliedinalocalisedwayorevenaspointloadssothatwhilsttheoverallload on a floor is in line with the relevant standardsthelocalisedloadingmaybemanytimeshigher.Forexample,acupboardraisedonfeethasasignificantlyincreasedpointloadingcomparedtoonesatonthewholebase. This results in increased localised loading acting on the insulation.

4.1Ground Floors

Technical Advice and Support Centre 01744 766666 www.knaufinsulation.co.uk 205

4.1

Compression resistanceTheinsulationmaterialwillbecompressedbythetotalloadappliedtoit.Itisvitallyimportantthat the insulation material has sufficient compressionresistancetorestricttheeffectsofthecompressiveload.Compressionresistanceismeasuredintwoways,mostcommonlytheimmediateeffectofcompressiveloadismeasuredandthisisquotedasacompressionresistanceinkPa.Theapplicationssectionshowsthecompressionresistanceofindividualinsulationmaterials,thisisusefulinidentifyingthegeneralsuitabilityofamaterialfortheapplicationintended.Thesecondmeasurementofcompressionresistancemeasuresthelongterm effects of loading on a material and is describedascompressivecreep.Wherehigherloadsareappliedthisfigurehashighrelevanceas long term loading will result in greater progressivecompressionofthicknessinsomeinsulation materials than others.

Compressive creepCompressivecreepisthemeasuredvalueofthelong term behaviour of a material under load. Highresistancetocompressivecreepiscriticalforlong-termstructuralperformance.Theidealinsulation material used in flooring needs to be strong without being brittle over the long term asthiswillminimiseanybuildingmovement.Amaterialwithsuperiorresistancetocompressivecreepenablesdesignerstotrulyoptimisetheirdesigntomaximisethepotentialusesofthestructurewithouttheriskoffailureinthemediumto long term.

Compressivecreeptestsarenecessarilylongtermprojectsastheypredicttheeffectofloadingover50years.PolyfoamECOextrudedpolystyrene(XPS)insulationhasbeentestedforcompressivecreepandachievedtheresultsshown in Table 1.

Thermal Bridging and Air LeakageThermal bridges are a significant source of heat lossandtheymayalsocauselocalisedcondensation and mould growth. The details on thefollowingpagesillustratebestpractice.

CalculationofU-valuesUnlikewallsandroofs,theheatlossthrough agroundfloorvarieswithitssizeandshape.TheBuildingRegulationsrequirethatwhenground floor U-values are calculated the methodologyinBSENISO13370:1998shouldbeemployed.

Thisstandardusestheratiooftheexposedfloorperimetertothefloorareatotakeaccountofthe variation in heat loss due to floor size and shape.

Themeasurementoftheperimeterandareashould be to the finished inside surfaces of the perimeterwallsthatenclosetheheatedspace.Projectingbaysshouldbeincluded,butunheatedspacessuchasporchesorgaragesshould be excluded.

When considering extensions to existing buildingsthefloordimensionsmaybetakenasthoseofthecompletebuildingincludingtheextension.

Table 1 - Compressive creep results for Polyfoam ECO Floorboards

Product Load applied kPa

Initial compression % Further compression after 50 years %

PolyfoamECOFloorboard Standard

60 2 1.5

PolyfoamECOFloorboard Extra

120 2 1.5

PolyfoamECOFloorboardSuper

175 2 1.5

WorkedexampleThefollowingworkedexampleillustrateshow toestablishtheP/Aratio.

ExampleAsemi-detachedhouseasshownbelow

Perimeter (P) = 8+4+3+6+5 = 26m

Area (A) = (10x8)-(6x3) = 62m2

Ratio (P/A) = 26/62 = 0.42

AgroundfloorwithaP/Aratioof0.42wouldachieveaU-valueof0.25W/m2K if insulated with75mmPolyfoamECOFloorboardStandardin a ground bearing concrete slab.

Determining the U-valueThe tables for each ground floor solution show typicalU-valuesforarangeoffloorconstructions,assumingaconductivityof1.50W/mKforthegroundbelowthefloor.

The high number of variables that have to be takenintoaccountcansignificantlyaffectthe U-valueforaparticularsetofconditions. ProjectspecificU-valuecalculationscanbesuppliedbyourTechnicalAdviceandSupportCentre.

CondensationAvapourcontrollayerisnotnormallyrequiredformostgroundfloorconstructions.However, avapourcontrollayerisrecommendedbetweentheinsulationandachipboardfloor,especiallyifthereisariskofexcessivemoisturefromthefloorslabdryingout.

4.1 Ground Floors


Ground floors

Above slabProduct:EarthwoolThermalFloorSlabPlus

Seepage:210

Below slabProduct:PolyfoamECOFloorboard Seepage:208

Knauf Insulation solution

Solutionoptimiserandpathfinder

U-values 0.25 0.20 0.15 0.09

Gf01

Gf02

Above slabProduct:PolyfoamECOFloorboard

Seepage:212

Gf03

Suspended concrete floor Product:PolyfoamECOFloorboard

Seepage:214

Gf04

Suspended concrete floorProduct:EarthwoolThermalFloorSlabPlus

Seepage:216

Gf05

0.300.33

4.1Ground Floors


4.1

Suspended timber floorProduct: Earthwool LoftRoll44/40

Seepage:218

Gf06

Suspended timber floor Product: Earthwool Flexible Slab

Seepage:218

Gf08

Underfloor heating - Standard system Product:PolyfoamECOFloorboard

Seepage:220

Gf07

Knauf Insulation solution U-values

Key

Thermalinsulationachievablebyconstructionswithinthisdocument.

Findonline.Visitknaufinsulation.co.ukandkeyinconstructioncodetofindthe

mostuptodateinformationonyourchosensolution.Pb01

0.25 0.20 0.15 0.090.300.33

4.1 Ground Floors


Ground floorsBelow slab

Polyfoam ECO Floorboard

PerformanceThermal performanceThethermalconductivitiesofPolyfoamECOFloorboardproductsare:-

StandardandExtra–0.033W/mK

Super–0.034-0.036W/mK

Unlikemostotherinsulants,moisturehasanegligibleeffectonthermalperformance.

Fire performanceWhenPolyfoamECOFloorboardisinstalledinaconcretefloorconstruction,itwillnotcontributetothedevelopmentstagesofafire.

Moisture resistanceMoistureresistanceofPolyfoamECOFloorboardenablesittobelaidexposedtogroundwater,withnegligibleimpactonperformance.Theboardsthemselvesdonotperformthefunctionofadampproofmembrane,butcanbelaidindampconditionsorupagainstwetconcretewithoutcompromisingthermalperformance.

Compression resistancePolyfoamECOFloorboardishighlyresistanttocompressionandwithstandsbothoccasionaland long term static loads. Load bearing construction elements should be designed to adequatelysupportthecombinationofimposedand dead loads without creating excessive deflection.

InstallationLevel the sand blinding over the hardcore to receive the insulation.

LaythePolyfoamECOFloorboarddirectlyonthesandblindingandthenlaythedpmovertheinsulationandlapwiththewalldampproofcourse.Alternatively,layPolyfoamECOFloorboardoverthedpminastretcherbrickbondpatterntocoverthewholefloorarea.Thejointsshouldbetightlybuttedtogether.Wheninstallingtheinsulationboardsinlayers,staggerthelayoutoftheboardstoavoidcoincidentverticaljointsrunningthroughthetotalinsulationthickness.Usespreaderboards,asnecessary,topreventpointloadspuncturingthedpm.Asliplayerisrequiredbetweentheinsulation and the concrete slab.

Placeastripofinsulation,minimum25mmthick,verticallyattheslabperimetertominimisethermalbridging.Theheightoftheperimeterinsulationtoequaltheslabthickness.Ensuretheperimeterinsulationboardsaresecurelyheldinplacetopreventdislodgementbyfollowingwork,e.g.bytapingthemtothemainfloorinsulation.

Laytheconcreteslab.Theconcreteslabmaybescreededoralternativelyhaveapowerfloatfinish.

ProductsPolyfoam ECO Floorboard is a range of rigid extrudedpolystyreneinsulationboards.

Theyarelightweight,haveexcellentstructuralstrength and long term effectiveness and are availableinthreegrades:

Polyfoam ECO Floorboard Standard – domestic and light commercial loading

Polyfoam ECO Floorboard Extra–commercial,industrial flooring and cold storage

Polyfoam ECO Floorboard Super–veryhighloadcommercial,industrialandcoldstoragefloors.

Typical constructionAsolidconcretegroundfloorslabcastoninsulationonadampproofmembrane(dpm)laidoverblindedhardcore.Alternativelyconcretefloorslabcastonadampproofmembrane laid over the insulation. The wall insulationshouldstartaminimumof150mmbelowthetopofthefloorinsulation.Thereshould be a flexible sealant between the wall finishandthefloorslabtominimiseairleakageatthisjunction.

• Moistureresistant-longterm exposure to water has negligible impact on thermal performance

• Highcompressivestrength-protects damp proof membrane from damage

• Robust and can tolerate traffic from following trades without damage prior to floor finish being laid


• BBAcertified

• ZeroOzoneDepletionPotential(ODP)

• GlobalWarmingPotential(GWP)<5

04/4186

PolyfoamECOFloorboard


Dampproofmembrane

25mmPolyfoamECOFloorboardatperimeterofslab

Concretefloorslab

Wall insulation takendownatleast150mm belowtopoffloorinsulation

Sliplayer,oralternativepositionfordampproofmembrane

Sand blinding

Flexible sealantGf01

NEW BUILD REFURB

4.1Ground Floors


4.1

Cavitywallinsulation

Minimum150mmoverlapbetween wall and floor insulation

to minimise thermal bridging

Flexible seal between wall finish and floor

Continuousribbonofplasterboardadhesive

PolyfoamECOFloorboard Dampproofmembrane

25mm(min)PolyfoamECOFloorboardatslabperimeter

TypicalspecificationThe whole of the ground floor area between brick,blockorconcretewallstobeinsulatedwithPolyfoamECOFloorboardStandard*/Extra/*Super*…...mmthickandlaiddirectlyoverblindedhardcore.PolyfoamECOFloorboardStandard*/Extra/*Super*atleast25mmthick,tobecutandplacedverticallyagainstthewallstothedepthoftheconcreteslab.

Theinsulationtobelaidabove*/below*dampproofmembrane,whichshouldlaptheperimeterwalldampproofcourse.Concreteslabandfloorfinishasspecifiedbythedesigner. (*deleteasappropriate)

Alternatively,consulttheNationalBuildingSpecifications,Standardversionclause/clauses…E20/30or

E20/200……………

KnaufInsulationspecificationclausescanbedownloadedfromknaufinsulation.co.uk/nbs

Typicalwall/floorjunction

Table 2 - U-values for concrete ground floors insulated below slab

U-values(W/m2K)

Thickness(mm) Ratioofperimeter(m)toarea(m2)

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Polyfoam ECO Floorboard Standard and Extra

165 (100+65)* 0.09 0.12 0.14 0.15 0.15 0.16 0.16 0.17

150 (75+75) 0.10 0.13 0.15 0.16 0.17 0.18 0.18 0.18

140 (75+65) 0.10 0.14 0.16 0.17 0.18 0.18 0.19 0.19

125 (75+50) 0.11 0.15 0.17 0.18 0.19 0.20 0.20 0.21

110 (75+35) 0.11 0.16 0.18 0.19 0.21 0.22 0.22 0.23

100 (1x100)** 0.11 0.16 0.19 0.20 0.21 0.22 0.23 0.24

90 (65+25) 0.12 0.17 0.20 0.22 0.24 0.25 0.26 0.26

75 (1x75) 0.13 0.19 0.23 0.25 0.27 0.28 0.29 0.30

65 (1x65) 0.13 0.20 0.24 0.27 0.29 0.30 0.32 0.33

U Value Competency SchemeCERTIFICATE CS/1001-2

Note: The U-values have been calculated assuming a clay subsoil with a thermal conductivity of 1.50 W/mK.

U-values for Polyfoam ECO Floorboard Super available on request - contact Technical Advice and Support Centre

* Polyfoam ECO Floorboard Extra - 2x50+65

** Polyfoam Floorboard ECO Extra - 2x50


Product Load applied(kPa)

Initial compression

(%)

Further compressionafter50years(%)


60 2 1.5


120 2 1.5

PolyfoamECOFloorboard Super

175 2 1.5

4.1 Ground Floors


Ground floorsAboveslab

Earthwool Thermal Floor Slab Plus

Screed finishPlaceaminimum30mmthickverticalpieceofEarthwoolThermalFloorSlabPlus,tothefulldepthofthescreedaroundtheperimetertominimisethermalbridging.Tapetheperimeterinsulationsecurelyinplacetopreventdislodgementbyfollowingwork.

LaytheEarthwoolThermalFloorSlabPlusandcoverwithavapourcontrol/sliplayerandturnupatthejunctionwiththewalls.Ifthisisarefurbishmentprojectandsecondarydampproofingisrequired,useasuitabledampproofmembranethatwillalsoactasasliplayer.

Laythescreed,eitherreinforcedsand/cementscreed,minimum65mmthick,oraproprietaryscreed,minimum35mmthick.Thesand/cementscreedshouldbereinforcedtoBS8204-1:2003+A1:2009.Itisimportanttocompactthescreedwelltoproduceadurablefloorsurface.

InstallationLayEarthwoolThermalFloorSlabPlusdirectlyoverthewholeoftheconcretefloor,thesurfaceofwhichtobesmoothandflattowithin5mmwhen measured with a two metre straight-edge. ThenatureofEarthwoolThermalFloorSlabPlusenables small irregularities in the concrete slab surface to be accommodated. When installing theinsulationslabsinlayers,staggerthelayoutoftheslabstoavoidcoincidentverticaljointsrunningthroughthetotalinsulationthickness.

Chipboard finishLayavapourcontrollayer(suchas1000gaugepolythene)betweentheinsulationandthechipboarddeckandturnitupatthejunctionwith the walls.

LaythechipboardinastaggeredpatternandgluealljointsusingawaterproofPVAadhesive.Leaveanexpansiongapofatleast10mmor2mmpermetrerunoffloorattheroomperimeter.Atdoorways,roomperimetersandaccesstrapstopipeworkruns,supportthecutedgesofchipboardonpreservativetreatedbattens.Ifindoubtrefertothechipboardmanufacturer’sinstructions.Sealthegapbetweenthefloorfinishandthesliplayerwithaflexiblesealanttominimiseairleakage.

ProductsEarthwool Thermal Floor Slab Plusisarigid,compressionresistantslabofnon-combustiblerockmineralwooldesignedforuseindomesticordomestictypeapplications.

Typical constructionAsolidconcretegroundfloorslabonadampproofmembraneonblindedhardcore.EarthwoolThermalFloorSlabPlusislaidoverthe whole of the concrete floor slab and finished with either a screed or flooring grade chipboard.

• Tolerancefriendly,accommodates slight imperfections in the sub-floor

• Productknitstogetherandcloses joints to ensure thermal performance is achieved avoiding localised cold spots


• Non-combustible with a Euroclass A1 reaction to fire rating

• BBAcertified


• ZeroGlobalWarmingPotential(GWP)

Flooringgradechipboard

Vapourcontrollayer

Dampproofmembrane

EarthwoolThermalFloorSlabPlus

Concretefloorslab


Flexible sealant to maintain air barrier

Gf02 NEW BUILD REFURB

4.1Ground Floors


4.1


Minimum150mmoverlapbetween wall and floor insulation to minimise thermal bridging

Flexiblesealbetweenskirtingboard and floor


Vapourcontrollayerbelowchipboard

TypicalspecificationInsulation below screedEarthwoolThermalFloorSlabPlus......mmthick,tobeclosebuttedandplacedoverthewhole area of the floor. Earthwool Thermal FloorSlabPlus,30mmthick,tobecutandplacedtofulldepthofscreedandfloorinsulationatthefloorperimeter.

Theinsulationtobeoverlaidwith1000gaugepolythene,takenupandovertheperimeterinsulation.A65mmthicksand/cement screed reinforced in accordance with BS8204-1:2003+A1:2009.Alternatively,installaproprietaryliquidscreed(minimumthickness35mm)laidinaccordancewithmanufacturers instructions. Floor finish as specifiedbythedesigner.

(*deleteasappropriate)

Alternatively,consulttheNationalBuildingSpecifications,Standardversionclause/clauses…M10/40orM10/290……………


Insulation below chipboardThe whole area of the concrete floor to be covered with Earthwool Thermal Floor Slab Plus,…...mmthick.Allslabstobeclosebutted.

The insulation to be overlaid with avapourcontrollayerof1000gaugepolytheneandcoveredwith18mmtandgflooringgradechipboard.

Alternatively,consulttheNationalBuildingSpecifications,Standardversionclause/clauses…K11/25orK11/225……………


PerformanceThermal performanceEarthwoolThermalFloorSlabPlushasathermalconductivityof0.038W/mK.

Fire performanceEarthwoolThermalFloorSlabPlusisclassifiedasEuroclassA1toBSEN13501-1.



Table 4 - Earthwool Thermal Floor Slab Plus compressive strength

Thickness(mm) Compressivestrength(kPa)

60,70 60

80,90,100 70

Table 5 - U-valuesforconcretegroundfloors,insulationbelowchipboard

U-values(W/m2K)


0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8


160(2x80) 0.10 0.13 0.15 0.16 0.17 0.17 0.18 0.18

150(80+70) 0.10 0.14 0.15 0.17 0.17 0.18 0.19 0.19

140(2x70) 0.10 0.14 0.16 0.17 0.18 0.19 0.20 0.20

130(70+60) 0.11 0.15 0.17 0.18 0.19 0.20 0.21 0.21

120(2x60) 0.11 0.15 0.18 0.19 0.20 0.21 0.22 0.22

100 0.12 0.17 0.20 0.21 0.23 0.24 0.25 0.25

90 0.12 0.18 0.21 0.23 0.24 0.25 0.26 0.27



4.1 Ground Floors




• Highcompressivestrength-protects damp proof membrane from damage


• BBAcertified



Ground floorsAboveslab

Polyfoam ECO Floorboard04/4186


PVAadhesive.Leaveanexpansiongapofatleast10mmor2mmpermetrerunoffloorattheroomperimeter.Atdoorwaysoraccesstrapstopipeworkruns,supportthecutedgesofchipboardonpreservativetreatedbattens.Ifindoubtrefertothechipboardmanufacturer’sinstructions. Seal between the wall and floor air barrierwithaflexiblesealant,orsealthespacebetweentheskirtingboardandthefloorusingaflexiblesealanttominimiseairleakage.

PerformanceThermal performanceThethermalconductivitiesofPolyfoamECOFloorboardproductsare:-

StandardandExtra-0.033W/mK

Super-0.034-0.036W/mK

Fire performance

WhenPolyfoamECOFloorboardisinstalledina floor construction it will not contribute to the developmentstagesofafire.

Compression resistancePolyfoamECOFloorboardishighlyresistanttocompressionandwithstandsbothoccasionaland long term static loads. Load bearing construction elements should be designed to adequatelysupportthecombinationofimposedand dead loads without creating excessive deflection.

boardstoavoidcoincidentverticaljointsrunningthroughthetotalinsulationthickness.

Screed finishPlaceaminimum25mmthickverticalpieceofPolyfoamECOFloorboardtothefulldepthofthescreedaroundtheperimetertominimisethermalbridging.Tapetheperimeterinsulationboardssecurelyinplacetopreventdislodgementbyfollowingwork.

CoverthePolyfoamECOFloorboardwithaseparating/sliplayerandturnupatthejunctionwiththewalls.Ifthisisarefurbishmentprojectandsecondarydampproofingisrequired,useasuitabledampproofmembranethatwillalsoactasasliplayer.

Laythescreed,eitherreinforcedsand/cementscreed,minimum65mmthickindwellingsand75mminothertypesofbuildings,oraproprietaryscreed,minimum35mmthick.Thesand/cementscreedshouldbereinforcedinaccordancewithBS8204-1:2003+A1:2009.Itisimportanttocompactthescreedwelltoproduceadurablefloorsurface.

Chipboard finishLayavapourcontrollayer(suchas1000gaugepolythene)betweentheinsulationandthechipboarddeckandturnitupatthejunctionwiththewalls.Laythechipboardinastaggeredpatternandgluealljointsusingawaterproof



Polyfoam ECO Floorboard Standard – domestic and light commercial loading

Polyfoam ECO Floorboard Extra–commercial,industrial flooring and cold storage

Polyfoam ECO Floorboard Super–veryhighloadcommercial,industrialandcoldstoragefloors.

Typical constructionAsolidconcretegroundfloorslabonadampproofmembraneonblindedhardcore.PolyfoamECOFloorboardslaidoverthewholeof the concrete floor slab and finished with eitherflooringgradechipboardorafloatingscreed,eithersand/cementbased,oraproprietaryflowingscreed.

InstallationLaythePolyfoamECOFloorboarddirectlyoverthe whole of the concrete floor. The surface of the floor should be smooth and flat to within 5mmwhenmeasuredwitha2metrestraight-edge. Irregularities greater than this mustbelevelledout.Thejointsshouldbetightlybutted together. When installing the insulation boardsinlayers,staggerthelayoutofthe

25mmPolyfoamECOFloorboard at screed perimeter

Gf03

Floating screed

Separating/sliplayer

Dampproofmembrane


Concretefloorslab



NEW BUILD REFURB

4.1Ground Floors


4.1





Separating/sliplayerbelow floating screed

TypicalspecificationInsulation below screedPolyfoamECOFloorboardStandard*/Extra......mmthick,tobeclosebuttedandplacedoverthewholeareaofthefloor.PolyfoamECOFloorboardStandard*/Extra,25mmthick,tobecutandplacedtofulldepthofscreedatthefloorperimeter.

The insulation to be overlaid with a separatinglayer*/1000gaugepolythene*takenupandovertheperimeterinsulation.A65*/75*mmthicksand/cementscreedreinforcedinaccordancewithBS8204-1:2003+A1:2009.Alternativelyinstallaproprietaryliquidscreed(minimumthickness35mm)laidinaccordancewithmanufacturers instructions. (*deleteasappropriate)



Insulation below chipboard

The whole area of the concrete floor to be linedwithPolyfoamECOFloorboardStandard*/Extra…...mmthick.Allboardstobe close butted.

Theinsulationtobe(overlaidwithavapourcontrollayerof1000gaugepolytheneand)*coveredwith18mmtandgflooringgradechipboard.(*deleteasappropriate)



Typicalwall/floorjunctionFlexible sealant to maintain air barrier

Table 6 - U-values for concrete ground floors insulated below slabU-values(W/m2K)

Thickness(mm) Ratioofperimeter(m)toarea(m2)0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Polyfoam ECO Floorboard Standard and Extra165 (100+65)* 0.09 0.12 0.14 0.15 0.15 0.16 0.16 0.17150 (75+75) 0.10 0.13 0.15 0.16 0.17 0.18 0.18 0.18140 (75+65) 0.10 0.14 0.16 0.17 0.18 0.18 0.19 0.19125 (75+50) 0.11 0.15 0.17 0.18 0.19 0.20 0.20 0.21110 (75+35) 0.11 0.16 0.18 0.19 0.21 0.22 0.22 0.23100 (1x100)** 0.11 0.16 0.19 0.20 0.21 0.22 0.23 0.2490 (65+25) 0.12 0.17 0.20 0.22 0.24 0.25 0.26 0.2675 (1x75) 0.13 0.19 0.23 0.25 0.27 0.28 0.29 0.3065 (1x65) 0.13 0.20 0.24 0.27 0.29 0.30 0.32 0.33



U-values for Polyfoam ECO Floorboard Super available on request - contact Technical Advice and Support Centre

* Polyfoam ECO Floorboard Extra - 2x50+65

** Polyfoam Floorboard ECO Extra - 2x50


Product Loadapplied(kPa)

Initialcompression(%)

Furthercompressionafter50years(%)

PolyfoamECOFloorboardStandard 60 2 1.5

PolyfoamECOFloorboardExtra 120 2 1.5

PolyfoamECOFloorboardSuper 175 2 1.5

4.1 Ground Floors


Ground floorsSuspendedconcretefloor

Polyfoam ECO Floorboard04/4186


preventdislodgementbyfollowingwork.

Laythesliplayer/vclovertheinsulationandturnupatthejunctionwiththewalls.


Chipboard finish

The insulation should be laid over the whole ofthebeamandblockfloor.

LaythechipboardinastaggeredpatternwithalljointsgluedusingawaterproofPVA adhesive.Leaveanexpansiongapofatleast10mmor2mmpermetrerunoffloorattheroomperimeter.Atdoorwaysoraccesstrapstopipeworkruns,supportthecutedgesofchipboardonpreservativetreatedbattens.Ifindoubt,refertothechipboardmanufacturer’sinstructions. Seal between the wall and floor air barrierwithaflexiblesealant,orsealthespacebetweentheskirtingboardandthefloorusingaflexiblesealanttominimiseairleakage.

InstallationPolyfoamECOFloorboardscanbeusedonabeamandblocksuspendedconcretefloorthatisthesubjectofacurrentBritishBoardofAgrementCertificateandinstalledinaccordancewith,andwithinthelimitationsof,thatcertificate.Thesurfaceofanyfloorshouldbesmoothandflattowithin5mmwhenmeasuredwitha2metrestraight-edge.Providedthesurfaceissmoothandflat,theinsulationmaybelaiddirectlyontotheflooringsystem.Otherwiselayathinlevellingscreed(thismaybethegroutwithbeamandblocksystems)priortolayingtheinsulation.Irregularities greater than those detailed above mustberemoved.Thejointsshouldbetightlybutted together. When installing the insulation inlayers,staggerthelayoutoftheboardstoavoidcoincidentverticaljointsrunningthroughthetotalinsulationthickness.

Whereabeamandblockfloorhasacamberorunevenuppersurface,alevellingscreedisrecommended.

Screeded finishPlaceaminimum25mmthickverticalpieceofPolyfoamECOFloorboardtothefulldepthofthescreed,aroundtheperimetertominimisethermalbridging.Ensuretheseperimeterinsulationboardsaresecurelyheldinplaceto



Standard – domestic and light commercial loading

Extra–commercial,industrialflooringand cold storage

Super–veryhighloadcommercial,industrialand cold storage floors.

Typical constructionAsuspendedconcretefloorofeitherbeamandblockconstructionorprecastconcreteplanks,overlaidwithPolyfoamECOFloorboardandfinishedwitheitherflooringgradechipboardorafloatingscreed,eithersand/cementbased, oraproprietaryflowingscreed.

Whereascreedisused,astripofPolyfoamECOFloorboardinsulation,minimum25mmthick,shouldbeplacedverticallyattheperimeterofthescreedtominimisethermalbridging.Asliplayer/vclof1000gaugepolythenesheetshouldbeplacedbetweentheinsulation and the screed.

The wall insulation should start a minimum of 150mmbelowthetopofthefloorinsulation.



• Lightweight,robustproduct,quick and easy to install


• BBAcertified



Screedorchipboard

Sliplayer/vcl


Wall insulation takendownatleast150mmbelowtopoffloor insulation

Gf04NEW BUILD REFURB

4.1Ground Floors


4.1





Vapourcontrollayerbelowchipboard

Levellingscreed(whererequired)

TypicalspecificationInsulation below screedPolyfoamECOFloorboardStandard*/Extra*Super*......mmthick,tobeclosebuttedandplacedoverthewholeareaofthefloor.PolyfoamECOFloorboardStandard*/Extra*Super*......mmthick,tobecutandplacedtofulldepthofscreedatthefloorperimeter.

Theinsulationtobeoverlaidwith1000gaugepolythene,takenupandovertheperimeterinsulation. A65*/75*mmthicksand/cementscreedreinforcedinaccordancewithBS8204-1:2003+A1:2009.Alternativelyinstallaproprietaryliquidscreed(minimumthickness35mm)laidinaccordancewithmanufacturersinstructions.Floorfinishasspecifiedbythedesigner. (*deleteasappropriate)



Insulation below chipboardThe whole area of the concrete floor to be overlaidwithPolyfoamECOFloorboardStandard*/Extra,*/Super*…...mmthick.Allboards to be close butted.

Theinsulationtobe(overlaidwithavapourcontrollayerof1000gaugepolytheneand)*coveredwith18mmtandgflooringgradechipboard.(*deleteasappropriate)


KnaufInsulationspecificationclauses can be downloaded from knaufinsulation.co.uk/nbs

PerformanceThermal performance

ThethermalconductivitiesofPolyfoamECOFloorboardproductsare:-

StandardandExtra-0.033W/mK

Super-0.034-0.036W/mK

Fire performanceWhenPolyfoamECOFloorboardisinstalledina floor construction it will not contribute to the developmentstagesofafire.


Compression resistance

PolyfoamECOFloorboardsishighlyresistanttocompressionandwithstandsbothoccasionaland long term static loads. Load bearing construction elements should be designed to adequatelysupportthecombinationofimposedand dead loads without creating excessive deflection.

Table 8 - U-values for beam and block ground floors insulated below chipboard deck

U-values(W/m2K)


0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8


165(100+65) 0.11 0.13 0.14 0.15 0.15 0.16 0.16 0.16

150(75+75) 0.12 0.15 0.16 0.17 0.17 0.17 0.18 0.18

140(75+65) 0.12 0.15 0.17 0.17 0.18 0.18 0.19 0.19

125(75+50) 0.13 0.16 0.18 0.18 0.19 0.20 0.20 0.20

110(75+35) 0.14 0.17 0.19 0.20 0.21 0.22 0.22 0.22

100 0.14 0.18 0.20 0.21 0.22 0.22 0.23 0.23

90(65+25) 0.15 0.19 0.21 0.23 0.24 0.25 0.25 0.26

75 0.16 0.21 0.24 0.26 0.27 0.28 0.29 0.29

65 0.17 0.22 0.26 0.28 0.29 0.30 0.31 0.32


Notes: The U-values have been calculated assuming a clay subsoil with a thermal conductivity of 1.50 W/mK. The thermal conductivity of concrete blocks – 1.13 W/mK. For project specific calculations contact our Technical Advice and Support Centre on 01744 766666.


Product Load applied(kPa)

Initial compression

(%)



60 2 1.5


120 2 1.5

PolyfoamECOFloorboard Super

175 2 1.5

4.1 Ground Floors


Screedorchipboard

Vapourcontrollayer


Ventilated sub floor

Wall insulation takendownatleast 150mmbelowtopoffloorinsulation

Ground floorsSuspendedconcretefloor


Chipboard finishThe insulation should be laid over the whole of the concrete floor.

LaythechipboardinastaggeredpatternwithalljointsgluedusingawaterproofPVAadhesive.Leaveanexpansiongapofatleast10mmor2mmpermetrerunoffloorattheroomperimeter.Atdoorways,roomperimetersandaccesstrapstopipework,runssupportthecutedgesofchipboardonpreservativetreatedbattens.Ifindoubt,refertothechipboardmanufacturer’sinstructions.Sealbetween the wall and floor air barrier with a flexiblesealant,andsealthespacebetweentheskirtingboardandthefloorusingaflexiblesealanttominimiseairleakage.

Performance

Thermal performanceEarthwoolThermalFloorSlabPlushasathermalconductivityof0.038W/mK.

Fire performanceEarthwoolThermalFloorSlabPlusisclassifiedasEuroclassA1toBSEN13501-1.

Wheninstallingtheinsulationinlayers,staggerthelayoutoftheslabstoavoidcoincidentverticaljointsrunningthroughthetotalinsulationthickness.

Screed finishPlaceaminimum30mmthickverticalpieceofEarthwoolThermalFloorSlabPlustothefulldepthofthescreed,aroundtheperimetertominimisethermalbridging.Ensuretheperimeterinsulationissecurelyheldinplacetopreventdislodgementbyfollowingwork.

Laythevapourcontrollayer/sliplayerovertheinsulationandturnupatthejunctionwiththewalls.


ProductsEarthwool Thermal Floor Slab Plusisarigid,compressionresistantslabofnon-combustiblerockmineralwooldesignedforuseindomesticordomestictypeapplications.

Typical constructionAsuspendedconcretefloorofeitherbeamandblockconstructionorprecastconcreteplanks,overlaidwithEarthwoolThermalFloorSlabPlusand finished with either flooring grade chipboardorafloatingscreed,eithersand/cementbased,oraproprietaryflowingscreed.

Avapourcontrollayer/sliplayerof1000gaugepolythenesheetshouldbeplacedbetween the insulation and the screed.

The wall insulation should start a minimum of 150mmbelowthetopofthefloorinsulation.

InstallationEarthwoolThermalFloorSlabPlusmaybelaiddirectlyontotheflooringsystem.Thesurfaceofanyfloorshouldbesmoothandflattowithin5mmwhenmeasuredwitha2metrestraight-edge. Irregularities greater than those detailed above must be removed.

Thejointsshouldbetightlybuttedtogether.

• Tolerancefriendly,accommodates slight imperfections in sub-floor

• Productknitstogetherandcloses joints to ensure thermal performance is achieved and avoid localised cold spots


• Non-combustiblewithaEuroclassA1 reaction to fire rating

• BBAcertified



Gf05NEW BUILD REFURB

4.1Ground Floors


4.1




Earthwool Thermal Floor SlabPlus

Vapourcontrol/sliplayerbelowscreedorchipboard

Levellingscreedwhererequired

TypicalspecificationInsulation below screedEarthwoolThermalFloorSlabPlus......mmthick,tobeclosebuttedandplacedoverthewhole area of the floor. Earthwool Thermal FloorSlabPlus,30mmthick,tobecutandplacedtofulldepthofscreedatthefloorperimeter.

Theinsulationtobeoverlaidwith1000gaugepolythene,takenupandovertheperimeterinsulation.A65*/75*mmthicksand/cementscreedreinforcedinaccordancewithBS8204-1:2003+A1:2009.Alternativelyinstallaproprietaryliquidscreed(minimumthickness35mm)laidin accordance with manufacturers instructions.Floorfinishasspecifiedbythedesigner.




Insulation below chipboardThe whole area of the concrete floor to be overlaid with Earthwool Thermal Floor Slab Plus,…...mmthick.Allslabstobeclosebutted.

Theinsulationtobeoverlaidwithavapourcontrollayerof1000gaugepolytheneandcoveredwith18mmtandgflooringgradechipboard.




Table 10 - Earthwool Thermal Floor Slab Plus compressive strength

Thickness(mm) Compressivestrength(kPa)

60,70 60

80,90,100 70


U-values(W/m2K)


0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8


160(2x80) 0.12 0.14 0.15 0.16 0.16 0.17 0.17 0.17

150(80+70) 0.12 0.15 0.16 0.17 0.17 0.17 0.18 0.18

140(2x70) 0.12 0.15 0.16 0.17 0.18 0.18 0.19 0.19

130(70+60) 0.13 0.16 0.17 0.18 0.19 0.19 0.20 0.20

120(2x60) 0.13 0.16 0.18 0.19 0.20 0.20 0.21 0.21

100 0.14 0.18 0.20 0.21 0.22 0.23 0.23 0.24

90 0.15 0.19 0.21 0.22 0.23 0.24 0.25 0.25

80 0.15 0.20 0.22 0.24 0.25 0.26 0.26 0.27


Note: The U-values have been calculated assuming a 0.16 W/mK aircrete block between concrete beams.

4.1 Ground Floors


Flexible seal

EarthwoolLoftRoll44/40orEarthwoolFlexibleSlab

Supportnetting

Ventilated floor void

Wall insulation takendownatleast 200mmbelowtopoffloorinsulation

Chipboarddeck

Ground floorsSuspendedtimberfloor

Earthwool Loft Roll or Earthwool Flexible Slab

Whenfixingtheskirtingboard,applyaself-adhesivefoamstriptotheundersideoftheskirtingandtwobeadsofsealanttothebacksurface.Applypressuretoensurethefoamstripiscompressedimmediatelybeforefixingtheskirtinginplace.

PerformanceThermal performanceEarthwoolLoftRoll40hasathermal conductivityof0.040W/mK.

EarthwoolLoftRoll44hasathermal conductivityof0.044W/mK.

Earthwool Flexible Slab has a thermal conductivityof0.037W/mK,except140mmthicknesswhichhasathermalconductivityof0.035W/mK.

Fire performanceEarthwoolLoftRoll44/40andEarthwoolFlexibleSlabareclassifiedasEuroclassA1toBSEN13501-1.

InstallationIftheinsulationisthefulldepthofthefloorjoists,staplethesupportnettingtotheundersideofthefirstjoistandunrollthenetting,staplingtotheunderside(orside)ofeachjoistasthenetting is unrolled.

Wherethejoistisdeeperthanthefloorinsulation,markthedepthoftheinsulationonthesideofthejoists.Staplethesupportnettingalongthislineandpulltauttotheadjacentjoistandstapleagain.Pullthenettingoverthetopofthejoistandstapletothedepthofthefloorinsulation.Repeattheprocessuntilthereisnettingsupporttothewholefloor.

InstallEarthwoolLoftRoll44/40ensuringtherearenoairgapsbetweentheinsulationandtheundersideofthefloordeck.

Fixthechipboardfloordeckintheusualway,usingwaterproofPVAglueatthejoints,andallowaminimum10mmgapattheroom perimeter.Ifindoubtrefertothechipboardmanufacturers instructions.

ProductsEarthwool Loft Rolls 44 / 40 are made from glass mineral wool and formed into rolls which arelightweight,flexible,resilientand non-combustible.

Earthwool Flexible Slabisamulti-use,flexible,rockmineralwoolslabdesignedforfriction-fittinginarangeofacoustic,thermalandfireresistantapplications.

Typical constructionAsuspendedandventilatedtimbergroundfloor.Theinsulationisplacedbetweenthejoistsandsupportedonpolypropylenenetting.

Thenettingshouldbepositionedtosupporttheinsulationsothatthereisnogapbetweentheinsulationandtheundersideofthefloordeck.

Thefloorjoistsrunningparallelwithmasonrywallsshouldbespacedatleast35mmawayfromthewalltoallowinsulationtobeplacednext to the wall.

The wall insulation should start a minimum of 200mmbelowthetopofthefloorinsulationtominimise thermal bridging.

• Frictionfittingbetweentimber joistsclosesjoints,preventingair movement and infiltration

• Flexibleproductswhich accommodates movements in floor ensuring all joints remain closed

Earthwool Loft Roll and Earthwool Flexible Slab

• Non-combustiblewithaEuroclass A1 reaction to fire rating

• A+GenericBREGreenGuideRating



Gf06 Gf08NEW BUILD REFURB

4.1Ground Floors


4.1

Table 12 - U-values of suspended timber ground floors insulated between joists

Thickness (mm)

Productcombination

Product U-values(W/m2K)

Ratioofperimeter(m)toarea(m2)

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

300- EarthwoolLoftRoll40 - - - - - - - -

150+150 EarthwoolLoftRoll44 0.10 0.12 0.13 0.13 0.14 0.14 0.14 0.14

250 150+100EarthwoolLoftRoll40 0.10 0.13 0.14 0.14 0.15 0.15 0.15 0.15

EarthwoolLoftRoll44 0.11 0.13 0.14 0.15 0.16 0.16 0.16 0.16

200 1x200EarthwoolLoftRoll40 0.12 0.15 0.16 0.17 0.17 0.18 0.18 0.18






250 100+90+60 Earthwool Flexible Slab 0.10 0.12 0.13 0.14 0.14 0.14 0.14 0.15

200 100+100 Earthwool Flexible Slab 0.11 0.14 0.15 0.16 0.17 0.17 0.17 0.18

140 Earthwool Flexible Slab 0.13 0.17 0.19 0.20 0.21 0.21 0.22 0.22

100 Earthwool Flexible Slab 0.15 0.20 0.23 0.25 0.26 0.27 0.28 0.29


Note: The U-values have been calculated assuming that the timber joists are 48mm wide at 600mm centres.



EarthwoolLoftRoll44/40orEarthwoolFlexibleSlabfullyfillingthespacebetweenthefloorjoists

Nettingsupportforinsulation

35mmgapfilledwithEarthwoolLoftRoll44/40orEarthwool Flexible Slab

TypicalspecificationPolypropylenenettingtobe(drapedoverandbetweenthejoistsandstapledtothesidesofeachjoist*/stapledtotheundersideofthejoists*).(*deleteasappropriate)

EarthwoolLoftRoll44*/40*/EarthwoolFlexibleSlab*of......mmthicknessandofwidthtosuitjoistspacings,supportedonthenetting and to be in contact with the undersideofthefloordeck.EarthwoolLoftRoll44*/40*/EarthwoolFlexibleSlab*tobecutandplacedtofullyfillinthegapbetweenthelastjoistandtheperimeterwall.Flooringgradetandgchipboardtobefixedtothefloorjoists,allasspecifiedbythedesigner.

Alternatively,consulttheNationalBuildingSpecifications,Standardversionclause/clauses…P10/250……………




Gf06

Gf08

4.1 Ground Floors


Ground floorsUnderfloor heating

Polyfoam ECO Floorboard Standard04/4186


PerformanceThermal performanceThethermalconductivityofPolyfoamECOFloorboardStandardis0.033W/mK.

Fire performanceWhenPolyfoamECOFloorboardStandardisinstalled below a screed it will not contribute to thedevelopmentstagesofafire.

Compression resistancePolyfoamECOFloorboardStandardishighlyresistanttocompressionandwithstandsbothoccasional and long term static loads. Load bearing construction elements should be designedtoadequatelysupportthecombinationofimposedanddeadloadswithout creating excessive deflection.

InstallationTheconcreteslabiscastinthenormalmanner,withthedampproofmembranebelowthe slab. Starting from the corner furthest from the manifoldoutletconnectionlaythePolyfoamECOFloorboardStandard,ensuringtheentirefloor area is covered.

Startingfromthemanifold,laythesinglerun ofpipe,fixingitfirmlyintotheinsulationboards.Ensurethepipesandpipereturnsareinstalledattherequiredcentresandarereturnedtothemanifoldsystem.Testthesystembefore finishing the floor.

Laytheliquidortraditionalcement/sandscreedtothespecifieddepth.Alternatively,theunderfloorheatingsystemisinstalledwithintheconcretefloorslabwhichislaidontopofPolyfoamECOStandardFloorboard.Thejointsshouldbetightlybuttedtogether.Wheninstallingtheinsulationinlayers,staggerthelayoutoftheboardstoavoidcoincidentverticaljointsrunningthroughthetotalinsulationthickness.

ProductsPolyfoam ECO Floorboard Standard is a rigid extrudedpolystyreneinsulationboard.

Itislightweight,andhasexcellentstructuralstrength and long term effectiveness.

Polyfoam ECO Floorboard Standard is ideal for usewithanunderfloorheatingsystem,usingeitherclips,staplesorarailsystem,makingitanidealsolutionforuseinawidevarietyoffloors.

Typical constructionAsolidconcretegroundfloorslabonadampproofmembraneonblindedhardcore.PolyfoamECOFloorboardStandardislaidoverthewholeoftheconcretefloorslab,theheatingpipes,usingclips,staplesorrailsareinstalledandcoveredwitheitheraliquidortraditional screed finish.

• Moisture resistant - long term exposure to water has negligible impact on thermal performance



• BBA certified



Gf07

Concretefloorslab

Dampproofmembrane

Sand blinding


PolyfoamECOFloorboardStandard

Table 13 - Compressive creep results for Polyfoam ECO Floorboard Standard

Loadapplied(kPa)

Initial compression

(%)



2 1.5

NEW BUILD REFURB

4.1Ground Floors


4.1



Flexible seal between skirtingboardandfloor

PolyfoamECOFloorboardStandard

Floatingscreed,withembeddedheatingpipes

Concretefloorslab

25mmPolyfoamECOFloorboardStandard Floorboard Standard

TypicalspecificationPolyfoamECOFloorboardStandard......mmthick,tobecloselybuttedandplacedoverthewholeareaofthefloor.PolyfoamECOFloorboardStandard,atleast25mmthick,tobecutandplacedtofulldepthofscreedatthefloorperimeter.

Asinglerunofpipetobefixedfirmlyintotheinsulation boards and returned to the manifoldsystem.Thepipestobetestedbefore the screed is laid.

A65*/75*mmthicksand/cementscreedreinforcedinaccordancewithBS8204-1:2003+A1:2009.Alternativelyinstallaproprietaryliquidscreed(minimumthickness35mm)laidinaccordancewithmanufacturers instructions. Floor finish as specifiedbythedesigner.





Continuousribbonofplasterboardadhesive

Table 14 - U-values for concrete ground floors insulated below slabU-values(W/m2K)

Thickness(mm) Ratioofperimeter(m)toarea(m2)0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Polyfoam ECO Floorboard Standard and Extra165(100+65)* 0.09 0.12 0.14 0.15 0.15 0.16 0.16 0.17

150(75+75) 0.10 0.13 0.15 0.16 0.17 0.18 0.18 0.18

140(75+65) 0.10 0.14 0.16 0.17 0.18 0.18 0.19 0.19

125(75+50) 0.11 0.15 0.17 0.18 0.19 0.20 0.20 0.21

110(75+35) 0.11 0.16 0.18 0.19 0.21 0.22 0.22 0.23

100(1x100)** 0.11 0.16 0.19 0.20 0.21 0.22 0.23 0.24

90(65+25) 0.12 0.17 0.20 0.22 0.24 0.25 0.26 0.26

75(1x75) 0.13 0.19 0.23 0.25 0.27 0.28 0.29 0.30

65(1x65) 0.13 0.20 0.24 0.27 0.29 0.30 0.32 0.33


Note: The U-values have been calculated assuming a clay subsoil with a thermal conductivity of 1.50 W/mK. U-values for Polyfoam ECO Floorboard Super available on request - contact Technical Advice and Support Centre on 01744 766666 * Polyfoam ECO Floorboard Extra - 2x50+65 ** Polyfoam Floorboard ECO Extra - 2x50


U-values(W/m2K)


0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8


165(100+65) 0.11 0.13 0.14 0.15 0.15 0.16 0.16 0.16150(75+75) 0.12 0.15 0.16 0.17 0.17 0.17 0.18 0.18

140(75+65) 0.12 0.15 0.17 0.17 0.18 0.18 0.19 0.19125(75+50) 0.13 0.16 0.18 0.18 0.19 0.20 0.20 0.20

110(75+35) 0.14 0.17 0.19 0.20 0.21 0.22 0.22 0.22100 0.14 0.18 0.20 0.21 0.22 0.22 0.23 0.23

90(65+25) 0.15 0.19 0.21 0.23 0.24 0.25 0.25 0.2675 0.16 0.21 0.24 0.26 0.27 0.28 0.29 0.2965 0.17 0.22 0.26 0.28 0.29 0.30 0.31 0.32


Notes: The U-values have been calculated assuming a clay subsoil with a thermal conductivity of 1.50 W/mK. The thermal conductivity of concrete blocks – 1.13 W/mK. For project specific calculations contact our Technical Advice and Support Centre on 01744 766666.

Knauf Insulation Ltd Customer Service (Sales) Technical Advice and Support Centre LiteraturePO Box 10 Tel: 0844 800 0135 Tel: 01744 766 666 Tel: 08700 668 660Stafford Road Fax: 01744 612007 Fax: 01744 766 667 Fax: 0870 400 5797St Helens Email: [email protected] Email: [email protected] Email: [email protected] www.knaufinsulation.co.ukWA10 3NS

section 4 - barbour product search...ground loors 41 technical advice and support centre 0144 66666...

Documents