Table 2.
Thermal resistances of various materials used in this study

Kind	Thickness(mm)	Thermal conductivity(kcal/m h°C)	Thermal resistance(m2h°C/kcal)
SPF	89	0.133	0.669
OSB	11.1	0.101	0.110
Hem-fir	35	0.121	0.291
Larch	35	0.117	0.299
Fiberglass(R11)	89	0.039	2.286
Fiberglass(R13)	115	0.044	2.616
Fiberglass(R19)	140	0.035	3.949
Styrofoam	50	0.050	1.000
Gypsum board	12	0.019	0.632
House wrap			0.442
Exterior surface			0.05
Interior surface			0.13