Table 1.
Thermal conductivity of materials for building envelops

Materials	Thermal conductivity (W/m·K)	Source
Gypsum board	0.210	Yoo et al., 2002
Expanded polystyrene	0.035
Concrete	1.620
Autoclave lightweight concrete	0.170
Mortar	1.510
Leveling mortar	0.370
Air gap	0.174	Kim et al., 2013
Dry topping	0.370
Membrane waterproofing	0.170