Poor thermal insulation of material causes of the elevated room temperature. This reduces not only the comfortable of the environment, hut also adds extra loading on the air conditioner. This study focused on the typical composite materials used in the building construction. The composite materials in this experiment were made from the stacking of single layer materials. The economy and the thermal insulation performance of these composite construction materials were investigated by comparing with other foreign composite construction materials. 25 kinds of composite construction encasing materials made from the combination of 10 single layer encasing materials from Taiwan, as well as 4 types of foreign composite encasing materials were examined based on the thermal propagation evaluation standards by the Architecture and Building Research Institution. The data performed the thermal insulation, moist resistance, and economy evaluations for the materials. The results suggested that the most well-performed composite encasing materials in terms of thermal insulation ability are (flashing plus plastic-steel hollow plate plus magnesium plate) and (hollow concrete plate plus conventional DECK plus magnesium plate). On the other hand, the best composite encasing material in terms of moist resistance is (color corrugated plate plus conventional DECK plus calcium silicate board). The composite encasing materials made from Taiwan domestic single layer materials have demonstrated similar thermal insulation characteristic as that of the best foreign composite encasing material; therefore, the building construction could be the alternatives of foreign composite encasing material. Up to now, there is no composite encasing material manufacturer in Taiwan. Therefore, it is recommended that the green construction material manufacturers could take the results of this study as the reference to produce more useful and standardized thermal insulation composite materials.