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Underlay 4mm Rubber

Underlay 4mm Rubber

Thickness :4 mm
Water resistance : waterproof
(Moisture can not penetrate closed cell membrane)

water absorption :0.003 lbs per cubic feet
Density : 110kg /cubic m
Sq Ft per Roll : 200 Sq. Ft.
Thermal Conductivity : 0.25 BTU/hour/ 
Fire resistance : UL 94 HFI,F,A,R,25.83
IIC Rating : 76db 
STC Rating  :77db

(condominium  approved)

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