FLOOR LAYING MATERIAL, PIECE MAT, AND ARRANGING STRUCTURE THEREOF

A floor laying material, a piece mat, and an arranging structure thereof whose sound absorbing property and sound insulating property are optimized. Floor laying material (10) comprises carpet layer (11) having joining strips (11a) of thermoplastic resin discontinuously arranged on the back surface thereof, and buffer material layer (12) layered to the back surface of carpet layer (11) through joining strips (11a). Carpet layer (11) has its front-to-back flow resistance value adjusted between 100 Nsm and 1000 Nsm Further, buffer material layer (12) is made of a material having an air wrapping property and has its front-to-back flow resistance value adjusted between 40 Nsm and 800 Nsm.