Thickness :1.5 mm
Water resistance : waterproof
(Moisture can not penetrate closed cell membrane)
water absorption : 0.003 lbs/cubic feet
Density :180kg/mcube
Sq Ft per Roll : 100 Sq. Ft.
Fire resistance : UL 94 HFI,F,A,R,25.83
IIC Rating : 78db 
STC Rating  ：73db
(condominium  approved)