Japanese traditional architecture of houses made of wood as main material, woven mats (tatami) as a floor covering and the combination of wood and paper (shoji) as a partition wall. Space planning module based on the size of a tatami floor 1 (176 x 88 cm) which is called 1 jo. Jo is a multiple of the basis determines the width of a room. Standard-sized room usually consists of 6 jo. Tatami is only installed in rg. sleep and rg. family / rg. guests, besides the kitchen and hallway floors using materials Vynil / parquette. Floor tiles are rarely used in Japan, except for the bathroom, rg. exterior and public facilities. This is because the construction of houses on stilts is not possible to use ceramics.