Comparison Data Sheet_R' Value
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COMPARISON DATA SHEET
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FOAM SALES' RIGID BOARD INSULATION MATERIALS
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R' VALUE (THERMAL RESISTANCE) AT SPECIFIED THICKNESSES (MM)
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Thickness (mm)Expanded Polystyrene (EPS) SL, 13.5kg/m3Expanded Polystyrene (EPS) VH, 28kg/m3Extruded Polystyrene (XPS) 32kg/m3Rigid Polyurethane (Rigid PU) 35kgPolyisocyanurate (PIR) 40kg/m3Phenolic Foam (Saviro) 45kg/m3
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10 mm0.250.290.360.430.460.40
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15 mm0.370.440.540.650.690.59
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20 mm0.500.580.710.870.930.79
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25 mm0.620.730.891.081.161.00
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30 mm0.750.881.071.301.381.18
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40 mm1.001.171.431.741.861.58
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50 mm1.251.451.792.172.321.97
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75 mm1.872.182.683.263.492.96
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100 mm2.502.903.574.354.643.95
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150 mm3.754.355.366.526.975.93
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200 mm5.005.807.148.699.307.91
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250 mm6.257.258.9310.8711.609.88
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300 mm7.508.7010.7113.0413.9211.86
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Thermal Conductivity (W/m.K) 0.040Thermal Conductivity (W/m.K) 0.034Thermal Conductivity (W/m.K) 0.028Thermal Conductivity (W/m.K) 0.023Thermal Conductivity (W/m.K) 0.0215Thermal Conductivity (W/m.K) 0.0253
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R' Value (Thermal Resistance) = Thickness in meters / Thermal Conductivity
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SPECIFICATION NAMES FOR ARCHITECTURAL AND BUILDING PLANS
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Foam Sales' EPS Expanded Polystyrene SL Grade 13.5kg/m3Foam Sales' EPS Expanded Polystyrene VH Grade 28kg/m3Foam Sales' Extruded Polystyrene XPS Blue BoardFoam Sales' Rigid Polyurethane Board (PU) 35kg/m3Foam Sales' Polyisocyanurate Board (PIR) 40kg/m3Foam Sales' Saviro Phenolic Foam Board 45kg/m3
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