Table 1.

A comparison of the thermal conductivity of typical building materials. (EPS, expanded polystyrene.)

group	material	thermal conductivity (W mK−1)
metal	aluminium	204
	copper	372
	steel	52
concrete	heavy	2.0
	light	0.7–0.9
glass	window	0.8
	foam glass	0.04
wood	hardwood	0.17
	chipboard	0.1–0.3
	cork	0.06–0.07
synthetics	EPS foam	0.035
	polyurethane foam	0.025–0.035
	phenolformaldehyde foam	0.035
	PP and PE	0.17