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EPS Insulation Thickness and R-Value in Panel Applications
3E-Plus should be used for pipe insulation applications
Expanded Polystyrene Thickness Table and R-Values |
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Nominal Density
|
Tested Temp.
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1.0”
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2.0”
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3.0”
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4.0”
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5.0”
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R
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R
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R
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R
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R
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Type 1
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1.0#
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@25F
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4.35
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8.53
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13.01
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17.35
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21.72
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@40F
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4.17
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8.03
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12.50
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16.60
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20.80
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@75F
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3.85
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7.69
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11.49
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15.38
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19.23
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Type VIII
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1.25#
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@25F
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4.54
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9.04
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13.65
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18.09
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22.70
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@40F
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4.26
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8.47
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12.82
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16.95
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21.28
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@75F
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3.92
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7.81
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11.76
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15.63
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19.61
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Type II
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1.5#
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@25F
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4.73
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9.45
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14.21
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18.90
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23.62
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@40F
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4.55
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9.09
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13.70
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18.18
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22.73
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@75F
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4.17
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8.33
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12.50
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16.67
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20.83
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Type IX
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2.0#
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@25F
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5.00
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10.00
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17.97
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23.79
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30.01
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@40F
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4.76
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9.52
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14.29
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18.87
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23.81
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@75F
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4.35
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8.70
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12.99
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17.24
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21.74
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| * Conditioned thermal values were determined by ASTM Test Method C 518. |
EPS Typical Thicknesses in Cold Storage Applications
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Operating Temp Fº
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Insulation Thickness
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U Factor
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Btu (Hr) (Sq Ft) (Fº)
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50
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2” – 3”
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.11 – .075
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30
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3” – 4”
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.075 – .060
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15
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4” – 5”
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.050 – .043
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0
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5” – 6”
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.043 - .037
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-15
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6” – 7”
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.037 - .032
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-24
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7” – 8”
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.031 - .027
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