Floors - Xtratherm

High StrengthThermal ConductivityExtensive RangeHigh PerformancePIR Floor Insulation BoardFloorsXT/UFInsulation for GroundSupported andSuspended FloorsKey FeaturesHigh Thermal PerformanceCertified Thermal Conductivityas Low as 0.022W/mKHigh Compressive StrengthLow Emissivity Foil FacingsHCFC/CFC free, GWP

XT/UF Insulation for groundsupported and suspended floorsThe floor in any building is an area of considerable heatloss if it is not properly insulated. Xtratherm Thin-R XT/UFwhen installed within a floor structure, will significantlyimprove the U-value (Thermal Transmittance) of newor existing floors.Under Floor InsulationExtra thermal performanceSuitable for under floor heatingXtratherm Thin-R is a high performancefoil faced Polyisocyanurate (PIR)insulation with a certified thermalconductivity as low as 0.022W/mK.Manufactured to strict EN 13165standards, the closed cell structureand gas tight facings providesexcellent thermal performance andmoisture resistance. Xtratherm Thin-Rproducts deliver genuine thermallyrobust performances and are supportedwith full third party assurancesthroughout the range.All suspended floors must be ventilated from theunderside. Ventilation should not be restricted byany supporting or sleeper wall used to supportthe floor system.Under Floor ScreedTypical installationReduced insulation thicknessHigh compressive strength1Detailing at wall/floor junctions is essential toreduce thermal bridging. By placing an upstandof Xtratherm Perimeter insulation 25mm thickaround the external and internal wall/floorjunctions, a robust detail is created.Property & UnitsDensity (Foam Core)30 (Kg/m 3 )Compressive Strength>140 (kPa)Water Vapour Resistivity>100 (MNs/gm)Thermal Conductivity0.022 (W/mK)Service Temperature-20 to 100 o cSurface Spread of FlameClass 1Xtratherm XT/ UF1Length (mm)24002Width (mm)12003Thickness (mm)25, 30, 35, 40, 50, 60, 65,70, 75, 90, 100, 110,125, 150XT/UF with Under floor heating.2All floors should include a suitable damp proofmembrane (A Radon Barrier doubles as a DPM).The DPM should seal with the DPC. The DPCshould be laid onto a flat level surface. To preventpuncturing the membrane, a screening of sand orcement dust should be laid before laying the DPC.It is good practice to place a layer of polythene overany under floor insulation to act as a separatinglayer in accordance with the Good Building GuideGBG 45 ‘Insulating Ground Floors’Under Floor SlabTypical installation3Xtratherm XT/UF provides the most efficientmeans of insulating a floor.It has the strength and thermal propertiesrequired to reach the high performanceU-values asked for in the BuildingRegulations. Xtratherm Thin-R XT/UFshould be laid with closely butted joints,laid staggered with a break bonded patternand fitted tightly at edges and around anyservice penetrations.Specification ClauseThe floor insulation shall be Xtratherm Thin-RXT/UF _ _ _ mm thick manufactured toEN ISO 9001:2008 by Xtratherm, comprisinga CFC/HCFC free rigid Polyisocyanurate(PIR) core between low emissivity foil facings.The floor insulation shall be installed inaccordance with instructions issued byXtratherm. Refer to NBS clauseE20 200, E20 30.

Installation GuidelinesSolid Under FloorLay the hardcore in layers 150mm min/ 250mmmax and compact well.Blind surface with quarry dust/sand to providelevel surface.Place DPM eg. 1200g polythene or RadonBarrier over blinding, tape joints to preventpassage of ground moisture.Carry DPM up wall to meet and seal with DPC.Lay the Xtratherm XT/UF boards in staggeredjointed pattern.Closely butt all edges.Place Xtratherm floor upstand around floorperimeter to provide Robust detail.Seal around any service penetrations. Layer apolythene vapour control layer min 0.125mmthick over the insulation with 150mm lap joints.Lay concrete slab to the correct thickness.UK Solid FloorTypical U-values XT/UFBelow floor screedFollow the same procedure as above.Leave the concrete subfloor, (over which theinsulation is to be laid), as long as possible todry out. RE BS 8203:1996Lay screed to specification over concrete slab.Perimeter/Area Ratio (PA)0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 Target U-valueThickness (mm) 25 40 50 55 55 60 65 65 65 0.25U-value 0.24 0.25 0.24 0.24 0.25 0.25 0.24 0.25 0.25 0.25Thickness (mm) 30 50 60 65 70 70 75 75 80 0.22U-value 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.21 0.22Thickness (mm) 40 60 65 75 80 80 90 90 90 0.20U-value 0.20 0.20 0.20 0.20 0.20 0.20 0.19 0.19 0.20 0.20Thickness (mm) 75 90 100 110 115 115 120 120 120 0.15U-value 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15IRL Solid FloorTypical U-values XT/UFPerimeter/Area Ratio (PA)0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 Target U-valueThickness (mm) 35 50 55 60 65 65 70 70 70 0.25U-value 0.25 0.24 0.25 0.25 0.25 0.25 0.24 0.25 0.25 0.25Thickness (mm) 45 60 65 70 75 80 80 80 80 0.22U-value 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.21 0.22Thickness (mm) 55 70 75 80 90 90 90 90 90 0.20U-value 0.20 0.20 0.20 0.20 0.19 0.20 0.19 0.19 0.20 0.20Thickness (mm) 90 110 110 115 120 120 125 125 125 0.15U-value 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15StandardsXtratherm Thin-R range is manufacturedto EN ISO 13165 under Quality Systemsapproved to EN ISO 9001:2008 qualitymanagement, EN ISO 14001:2004environmental management andBS OHSAS 18001 Health and SafetyManagement System.StorageXtratherm Thin-R should be stored offthe ground, on a clean, flat surface andmust be stored under cover. The polythenewrapping is not considered adequateprotection for outside exposure.CuttingXtratherm Thin-R can be readily cut usinga sharp knife or fine toothed saw. Ensuretight fitting of the insulation boards to achievecontinuity of insulation as asked forin accredited details.PackagingXtratherm Thin-R is wrapped in polythenepacks and each pack is labelled with detailsof grade/type, size and number of piecesper pack.AvailabilityXtratherm products are available throughbuilder’s merchants and specialist distributorsthroughout the UK and Ireland. For thelocation of your nearest stockist pleasecontact Xtratherm.EnvironmentalXtratherm Thin-R is manufacturedunder ISO 14001:2004 EnvironmentalManagement with all major componentssourced under 14001 accredited suplliers.It is manufactured without the use ofCFC’s or HCFC’s and has Zero OzoneDepletion Potential with a GWP of lessthan 5. Thin-R has been awarded an A+Rating under the BRE Green Guide.DurabilityXtratherm Thin-R products are stable,rot proof and will remain effective for thelife span of the building, dependent onspecification and installation. Care shouldbe taken to avoid contact with acids,petrol, alkalis and mineral oil, when contactis made, clean materials in a safe mannerbefore installation. Solvent based adhesivecontaining methyl ethyl ketone, shouldnot be used.Resistance ‘R’ valuesThe resistance value of any thickness of Xtratherm PIR can be ascertained by simply dividing the thicknessof the material (in metres) by it’s agrèment declared lambda value 0.022 W/mk. eg 50mm = 0.050/0.022 = R2.27.Quality Management SystemsEnvironmental ManagementOccupational Health & Safety

Xtratherm Technical ServicesAll the members of our technical team are individually BBA accreditedto help you reach your low energy goals. BBA qualified in U-valuecalculation, condensation risk and also Thermal Bridging 3D analysisbacked by BRE accreditation – when you call Xtratherm, you can beassured you’re speaking to a qualified person.XT/CW (T&G)Walls:Insulation for Partial FillCavity WallCT/PIRWalls:Full Fill Built-in Insulationfor Traditional BuildXT/CWPWalls:Insulation with enhancedperformance for Partial FillCavity WallsXT/TLWalls:Insulation for Drylining wallsFixed with Adhesive DabsXT/TL-MFWalls:Insulation for Drylining wallsMechanically Fixed to BattensXT/UFFloors:Insulation for Ground Supportedand Suspended FloorsXT/HYFFloors:Insulation for Ground Supportedand Suspended Floors withEngineered Jointing.XT/PRRoofs:Insulation for Pitched RoofsXT/TFWalls:Insulation for TimberFramed WallsXT/SKRoofs:Insulation for Sarking(Warm Roof) Constructionswith Engineered JointingRigid InsulationFlexible SolutionsXtratherm UK LimitedPark Road HolmewoodChesterfield DerbyshireS42 5UYTel+ 44 (0) 371 222 1033Fax+ 44 (0) 371 222 1044Xtratherm LimitedLiscarton Industrial EstateKells Road, NavanCo.Meath, IrelandTel+ 353 (46) 906 6000Fax+ 353 (46) 906 6090Contactinfo@xtratherm.comwww.xtratherm.comGood workmanship and appropriate site procedures are necessary to achieve expected thermal and airtightness performance. The example calculations are indicativeonly. Default values for components and cavities have been used, for specific U-value calculations contact Xtratherm Technical Support. Comprehensive guidance oninstallation should be consulted. Xtratherm technical literature and Agrément certifications are available for download on the Xtratherm website. The information containedin this publication is, to the best of our knowledge, true and accurate but any recommendations or suggestions which may be made are without guarantee since theconditions of use are beyond our control.