heating system and have traditionally slept on a thin cotton
mattresses warmed directly from the floor surface [6].
Consequently, a number of Korean researchers have evaluated
a range of floor finishing materials and determined the ideal floor
surface temperature while a person is in the sitting position;
22.5e38.8 C [7e11]. On the other hand, Western researchers
conducted their experiments inside laboratories wherein the air
temperature was controlled within a specified comfortable state to
be 23e24 C [6].