Table 5.
Thickness (mm) of CLT and insulation for modified CLT envelops

Building envelop	Region	U-value criteria (W/m2·K)	Composition for Fig. 2		Composition for Fig. 3		Diff. (mm)
			CLT thickness (Tclt)	Insulation thickness (Ti)	CLT thickness (Tclt)	Insulation thickness (Ti)
Wall faced outdoor air	Central	0.21 or less	180	109	180	97	12
	Southern	0.26 or less	180	77	180	66	11
	Jeju	0.36 or less	180	41	180	30	11
	Passive	0.15 or less	180	173	180	162	11
Roof faced outdoor air	Central	0.15 or less	180	174	180	165	9
	Southern	0.18 or less	180	136	180	127	9
	Jeju	0.25 or less	180	83	180	74	9
	Passive	0.12 or less	180	231	180	221	10
Interlayer floor	Central	0.81 or less	150	0	150	0	0
	Southern
	Jeju