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PRODUCT DATA SHEETSarnatherm EPSRigid expanded polystyrene insulation boardPRODUCT DESCRIPTIONCHARACTERISTICS / ADVANTAGESSarnatherm EPS is a rigid expanded polystyreneinsulation board. Sarnatherm EPS is installed directly onthe substrate (depending on local code or FMrequirements), over an approved thermal barrier, ordirectly on the existing roof surface prior to theapplication of the Sarnafil membrane or Sikaplan membrane. USESWherever insulation is required within a conventionalroof assembly.AREAS OF APPLICATION New RoofsRecover RoofsMechanically Fastened SystemsAdhered SystemsProduct Data SheetSarnatherm EPSNovember 2021, Version 05.010209350320000050101/5Manufactured with no CFCs or HCFCsVirtually no GWP (Global Warming Potential)Zero ODP (Ozone Depletion Potential)Recognized as resistant to mold growthAPPROVALS / STANDARDS ASTM C 578 Type VIII, II, IX, XIV, XVUL 1256, 790, 263FM 4450, 4470Miami-Dade CountyState of Florida
PRODUCT INFORMATIONChemical BasePolystyrene Foam CorePackaging 4 ft x 4 ft (1.2 m x 1.2 m) 4 ft x 8 ft (1.2 m x 2.4 m) Various ThicknessesShelf LifeN/AStorage ConditionsWhen stored outdoors, the insulation should be stacked on pallets at least 4”(102 mm) above the surface level and protected from exposure to directsunlight and weather using an opaque, light-colored tarpaulin. Do not use adark colored tarpaulin. The factory applied packaging is intended only forprotection during transit and should only be slit enough to preventaccumulation of condensation then removed prior to immediate use.Insulation that becomes wet or damaged should be removed and replacedwith dry insulation.DensityNominalMinimumType VIII1.25 psf1.15 psfType II1.5 psf1.35 psfType IX2.0 psf1.8 psf(ASTM C-303)TECHNICAL INFORMATIONCompressive StrengthType VIII13.0 psi (90 kPa)Type IIType IX15.0 psi (104 kPa) 25.0 psi (173 kPa)(ASTM D-1621)Minimum values at yield or 10 % deformation, whichever occurs first.Flexural StrengthType VIII30 psi (208 kPa)Type II35 psi (240 kPa)Type IX50 psi (345 kPa)Type II2%Type IX2%(ASTM C-203)Minimum valuesDimensional StabilityType VIII2%(ASTM D-2126)Maximum valuesThermal ConductivityC-value per inch, BTU/hr .ft 2. FType VIII@25 F (-4 C)0.22Product Data SheetSarnatherm EPSNovember 2021, Version 05.010209350320000050102/5@40 F (5 C)0.24@75 F (24 C)0.26(ASTM C-177)
Thermal resistanceService TemperatureWater AbsorptionType II@25 F (-4 C)0.21@40 F (5 C)0.22@75 F (24 C)0.24(ASTM C-177)Type IX@25 F (-4 C)0.20@40 F (5 C)0.21@75 F (24 C)0.23(ASTM C-177)R-value per inch, hr .ft 2. F/BTUType VIII@25 F (-4 C)4.5@40 F (5 C)4.3@75 F (24 C)3.9(ASTM C-177)Type II@25 F (-4 C)4.8@40 F (5 C)4.6@75 F (24 C)4.2(ASTM C-177)Type IX@25 F (-4 C)5.0@40 F (5 C)4.8@75 F (24 C)4.4(ASTM C-177)Maximum Use TemperatureType VIIIType II165 F (74 C)165 F (74 C)Type VIII3Type II3Type IX165 F (74 C)Type IX2(ASTM C-272)Maximum values, % by volumePermeability to Water VaporType VIII3.5 permType II3.5 permType IX2.5 perm(ASTM E-96)Maximum values, 1" thicknessReaction to FireOxygen index:Type VIII24.0Type II24.0Type IX24.0(ASTM D-2863)Type II25Type IX25(ASTM E-84)Smoke development:Type VIIIType II450450Type IX450(ASTM E-84)Minimum Values, % by volumeFlame spread:Type VIII25Maximum valuesMaximum valuesBASIS OF PRODUCT DATAResults may differ based upon statistical variationsdepending upon mixing methods and equipment,temperature, application methods, test methods, actualProduct Data SheetSarnatherm EPSNovember 2021, Version 05.010209350320000050103/5site conditions and curing conditions.
AVAILABILITY/WARRANTYAVAILABILITYFrom Sika Corporation – Roofing Authorized Applicatorsfor use within Sarnafil or Sikaplan systems.WARRANTYUpon successful completion of the installed roof by theSika Authorized Applicator in compliance with Sikarequirements, Sika Corporation will provide a warrantyto the Building Owner via the Sika Authorized Applicator.LIMITATIONS Care must be taken whenever solvents are presentnear polystyrene insulation. Do not use solvent based adhesives with systemsincorporating polystyrene insulation for roofmembrane attachment. Foam plastic insulation will ignite if exposed to fire ofsufficient heat and intensity. Protect foam insulationfrom exposure to open flame or other ignition sourcesduring shipment, storage, and installation. Polystyrene insulations should not be used in directcontact with chimneys, heater vents, steam pipes, orother surfaces where temperatures exceed 150 F(65 C). Bareback membranes cannot be installed in contactwith polystyrene. Polystyrene insulations should have additionalprotection in addition to normally specified coverboards in areas where dark membranes are used andwhere "reflected solar energy" is expected to bepresent. Areas adjacent to higher walls or other structures withreflective cladding should be considered for additionalheat protection. For example, areas near metal or glasscladding, or near, or in between large groupings ofmechanical equipment, or near higher reflectiveparapets, should be considered for additional heatprotection. Additional heat protection for such roofareas include covering roofing membrane with SarnafilPVC Protection Layer and then applying pavers orballast to the affected area. Polystyrene insulation is susceptible to degradationwhen exposed to high temperatures or when exposedto solvents or solvent fumes. The typical maximumservice temperature for polystyrene insulations is165 F (74 C). Should ambient or surface temperaturebe expected to exceed this value, please consult themanufacturer of the insulation.ENVIRONMENTAL, HEALTH AND SAFETYFor further information and advice regardingtransportation, handling, storage and disposal ofchemical products, user should refer to the actual SafetyData Sheets containing physical, environmental,Product Data SheetSarnatherm EPSNovember 2021, Version 05.010209350320000050104/5toxicological and other safety related data. User mustread the current actual Safety Data Sheets before usingany products. In case of an emergency, call CHEMTRECat 1-800-424-9300, International 703-527-3887.APPLICATION INSTRUCTIONSSarnatherm EPS is installed by a Sarnafil AuthorizedApplicator. Sarnatherm EPS may be installed either bymechanical-attachment to the roof deck withSarnafasteners and Sarnaplates, by full attachment withlow rise sprayed urethane foam or partial attachmentwith foam adhesive (options depend on deck type andSarnafil system to be installed).If the compressive strength of the EPS board is less than20 psi, then a gypsum cover board must be installedover the board for load distribution and resistancepurposes.Contact Sika Corporation – Roofing TechnicalDepartment regarding alternative methods ofattachment.MAINTENANCEStandard maintenance of Sarnafil and Sikaplan systemsshould include regular inspections of flashings, drainsand termination sealants at least twice a year and aftereach storm.OTHER RESTRICTIONSSee Legal Disclaimer.
LEGAL DISCLAIMER KEEP CONTAINER TIGHTLY CLOSED KEEP OUT OF REACH OF CHILDREN NOT FOR INTERNAL CONSUMPTION FOR INDUSTRIAL USE ONLY FOR PROFESSIONAL USE ONLYPrior to each use of any product of Sika Corporation, itssubsidiaries or affiliates (“SIKA”), the user must alwaysread and follow the warnings and instructions on theproduct’s most current product label, Product DataSheet and Safety Data Sheet which are available atusa.sika.com or by calling SIKA’s Technical ServiceDepartment at 1-800-933-7452. Nothing contained inany SIKA literature or materials relieves the user of theobligation to read and follow the warnings andinstructions for each SIKA product as set forth in thecurrent product label, Product Data Sheet and SafetyData Sheet prior to use of the SIKA product.SIKA warrants this product for one year from date ofinstallation to be free from manufacturing defects andto meet the technical properties on the current ProductData Sheet if used as directed within the product’s shelflife. User determines suitability of product for intendeduse and assumes all risks. User’s and/or buyer’s soleremedy shall be limited to the purchase price orreplacement of this product exclusive of any labor costs.NO OTHER WARRANTIES EXPRESS OR IMPLIED SHALLAPPLY INCLUDING ANY WARRANTY OFMERCHANTABILITY OR FITNESS FOR A PARTICULARPURPOSE. SIKA SHALL NOT BE LIABLE UNDER ANY LEGALTHEORY FOR SPECIAL OR CONSEQUENTIAL DAMAGES.SIKA SHALL NOT BE RESPONSIBLE FOR THE USE OF THISPRODUCT IN A MANNER TO INFRINGE ON ANY PATENTOR ANY OTHER INTELLECTUAL PROPERTY RIGHTS HELDBY OTHERS.Sale of SIKA products are subject to the Terms andConditions of Sale which are available onditions.htmlor by calling 1-800-933-7452.Sika Corporation201 Polito AvenueLyndhurst, NJ 07071Phone: 1-800-933-7452Fax: 1-201-933-6225usa.sika.comSika Sarnafil100 Dan RoadCanton, MA 02021Phone: 1 800-451-2504Fax: 1 l@us.sika.comSika Mexicana S.A. de C.V.Carretera Libre Celaya Km. 8.5Fracc. Industrial BalvaneraCorregidora, QueretaroC.P. 76920Phone: 52 442 2385800Fax: 52 442 t Data SheetSarnatherm EPSNovember 2021, Version 05.010209350320000050105/5
areas include covering roofing membrane with Sarnafil PVC Protection Layer and then applying pavers or ballast to the affected area. Polystyrene insulation is susceptible to degradation when exposed to high temperatures or when exposed to solvents or solvent fumes. The typical maximum service temperature for polystyrene insulations is
