Comparison Data Sheet - 'R' Values of Rigid Board Insulation Materials

	A	B	C	E	F	G
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2	FOAM SALES' RIGID BOARD INSULATION MATERIALS
3	R' VALUE (THERMAL RESISTANCE) AT SPECIFIED THICKNESSES (MM)
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5	Thickness (mm)	Expanded Polystyrene (EPS) SL Grade 13kg/m3	EPS VH & VVHX38 Grade 28kg/m3 - 38kg/m3	Saviro XPS Blue Board 32kg/m3	Rigid Polyurethane (RPU) 35kg	Polyisocyanurate (PIR) 40kg/m3
6	10 mm	0.25	0.29	0.36	0.43	0.46
7	15 mm	0.37	0.44	0.54	0.65	0.69
8	20 mm	0.50	0.59	0.71	0.87	0.93
9	25 mm	0.62	0.74	0.89	1.08	1.16
10	30 mm	0.75	0.88	1.07	1.30	1.38
11	40 mm	1.00	1.18	1.43	1.74	1.86
12	50 mm	1.25	1.47	1.79	2.17	2.32
13	75 mm	1.87	2.21	2.68	3.26	3.49
14	100 mm	2.50	2.94	3.57	4.35	4.64
15	150 mm	3.75	4.41	5.36	6.52	6.97
16	200 mm	5.00	5.84	7.14	8.69	9.30
17	250 mm	6.25	7.35	8.93	10.87	11.60
18	300 mm	7.50	8.82	10.71	13.04	13.92
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20		Thermal Conductivity (W/m.K) at 23C. 0.040	Thermal Conductivity (W/m.K) at 23C. 0.034	Thermal Conductivity (W/m.K) 0.028	Thermal Conductivity (W/m.K) 0.023	Thermal Conductivity (W/m.K) 0.022
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22		R' Value (Thermal Resistance) = Thickness in meters / Thermal Conductivity
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24		SPECIFICATION NAMES FOR ARCHITECTURAL AND BUILDING PLANS
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26		Foam Sales' EPS Expanded Polystyrene SL Grade 13kg/m3	Foam Sales' EPS Expanded Polystyrene VH Grade 28kg/m3	Foam Sales' Saviro XPS Blue Board 32-34kg/m3	Foam Sales' Rigid Polyurethane Board (RPU) 35kg/m3	Foam Sales' Polyisocyanurate Board (PIR) 40kg/m3
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