Specification

ADDITIONAL THERMAL R-VALUES
“R” means resistance to heat flow. The higher the R-value, the
greatertheinsulatingpower.AccordingtotheASHRAEHandbookof
Fundamentals,thereflectivefoilfacingofThermasheath-3contributes
additional R-value to the overall assembly when installed against a
deadairspace.Forexample,ASHRAEassignsa2.77R-valuetoa3/4
inchdead-airspaceagainstareflectivefoilinatypicalwallassembly.
ThisvalueisinadditiontotheR-valueofthepolyisofoam-seeSytem
R-Valuebelow.
Nominal
Thickness
Thermal
R-Value
1
SystemR-Value
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
1.25 7.8 10.57 38
1.50 9.6 12.37 32
1.55 10.0 12.77 30
1.75 11.4 14.17 27
2.00 13.1 15.87 24
2.25 14.9 17.67 21
2.30 15.3 18.07 20
2.50 16.7 19.47 19
2.75 18.5 21.27 17
3.00 20.3 23.07 16
3.25 22.1 24.87 14
3.50 23.9 26.67 13
3.75 25.7 28.47 12
4.00 27.4 30.17 12
4.25 29.2 31.97 11
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.
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.
Thermasheath-3
Doing one thing well
in so many ways...
RmaxisaU.S.owned
company that only
manufactures polyiso
insulation. Thermasheath-3
ismanufacturedintheU.S.
and is offered through
anextensivedistribution
network.Itisavailablein
standard four foot wide
panels, with standard panel
lengths of eight or nine feet.
Customlengthsareavailable
for special orders. Contact
RmaxSalesatyourregional
CustomerServiceCenter
forproductavailability,
pricing information, and your
nearest distribution center.
Corporate & Technical
RmaxOperating,LLC
13524WelchRoad
Dallas, Texas 75244-5291
Phone:[phone]
Fax:[phone]
Email:[e-mail]
Web:www.rmax.com
Customer Service &
Plant Locations
Central Region
Dallas, Texas
[phone] Ext. 102
Eastern Region
Greer,SouthCarolina
[phone] Ext. 156
Western Region
Fernley,Nevada
[phone] Ext. 156
Thermasheath
®
-3
2015-08