Specification

PRODUCT DESCRIPTION
Rmax Thermasheath-3 is an energy-efficient
thermal insulation board composed of a closed-cell
polyisocyanurate (polyiso) foam core bonded to reinforced
aluminum foil facers on each side. Thermasheath-3
utilizes a CFC-, HCFC- and HFC-free blowing agent
that has zero Ozone Depletion Potential (ODP) and negligible
Global Warming Potential (GWP). This insulation is suitable for
use in walls, ceilings and some limited roofing applications in
new construction for commercial, residential, agricultural and
industrial buildings and in thermal retrofit construction within
existing buildings.
COMPLIANCES
• ASTMC1289TypeI,Class1
• InternationalBuildingCode(IBC)
Section2603,FoamPlastic
• ASHRAE90.1
• ESR-1864,ICCEvaluationService
• InternationalEnergyConservationCode(IECC)
• Miami-DadeCountyProductControlApproved
• RR25322,CityofLosAngelesResearchReport
• CaliforniaCodeofRegulations,Title24
• CanadianConstructionMaterialsCentreEvaluation
#CCMC13381-L,manufacturedtoconformto
 CAN/ULC-S704-03Type1,Class1
• AirBarrierMaterialperASTME2178
• 1,2,3or4hourFireRatedAssembliesasshown
intheULFireResistanceDirectory.
• DesignNo.:U026,U326,U330,U354,U424,U460,
U902,U904,U905,U906,U907,V454,V499
CONSTRUCTION APPLICATIONS
• Studwalls;cavitywalls;masonrywalls;exteriorstucco;
re-siding;vaultedceilings;atticsandcrawlspaces;
concretefoundations;limitedroofingapplications
PRODUCT BENEFITS
• Reducesenergycosts
• ContributestowardLEED
®
credits
• Offerstaxcredits,whereapplicable
Thermasheath
®
-3
Insulation for the Building Envelope
ROOF
WALL
SPECIALTY
THERMAL PROPERTIES / PRODUCT DATA
“R”meansresistancetoheatflow.ThehighertheR-value,thegreater
the insulating power.
Nominal
Thickness
ThermalR-Value
1
SystemR-Value
2
Pcs/Bdl
Inches °F•ft
2
•hr/Btu °F•ft
2
•hr/Btu
0.50 3.2 5.97 96
0.75 5.0 7.77 60
1.00 6.0 8.77 48
1.50 9.6 12.37 32
2.00 13.1 15.87 24
2.50 16.7 19.47 19
3.00 20.3 23.07 16
3.50 23.9 26.67 13
4.00 27.4 30.17 12
4.50 31.0 33.77 10
1
ThermalvaluesaredeterminedbyusingASTMC518testmethodat75°Fmean
temperatureonmaterialconditionedaccordingtoPIMATechnicalBulletinNo.101.
2
IncludestheASHRAEassigned2.77R-valueofa3/4inchdead-airspaceagainsta
reflectivefoilinatypicalwallassembly.
AdditionalthermalR-valuescanbefoundontheinserttothisdocument.
Thermasheath-3 is shipped in bundles that are approximately 48 inch
highandwrappedinplasticforeasyhandling.Visitwww.rmax.com for a
complete list of thicknesses and packaging information.
TYPICAL PHYSICAL PROPERTIES
Physical properties shown are based on data obtained under controlled
conditions and are subject to normal manufacturing tolerances.
Property TestMethod Results
Density,Overall,Nominal ASTMD1622 2.0pcf
CompressiveStrength ASTMD1621 20psi
1
FlameSpread,Core
2
ASTME84 75orLess
SmokeDeveloped,Core
2
ASTME84 <450
WaterVaporTransmission ASTME96 <0.3perm
WaterAbsorption ASTMC209 <1%Vol.
DimensionalStability ASTMD2126,
7days,158°F,98%RH
<2%LinearChange
ServiceTemperatures -40°Fto+250°F
1
Alsoavailablein25psiuponrequest.Lessthan1inchisonlyavailableat16psi.
2
Flame spread and smoke numbers are shown for comparison purposes only and are
not intended to represent the performance of Thermasheath-3 and related components
under actual fire conditions.
2015-08