Offical Website for Sound Shark Rubber Floor Underlayment

Acoustical Tests

Note: The Δ IIC is a new ASTM test that measures the improvement in decibels. Example a Δ IIC 21 would mean a 21 point improvement . The Δ IIC tests is only tested on a 6" concrete slab with no ceiling below.

Model	Floor / Ceiling Assembly Description	Floor Covering	IIC Rating	Test #
3mm	Wood frame construction 2 x 16" - 24" centers, 5/8" T&G plywood w/ 1 1/2" lightweight concrete topping- batt insulation, RC-1 channel, 5/8" GWB	Floated Engineered Hardwood	IIC 57	SS-3A
3mm	6" concrete slab with no ceiling below	Floated Engineered Hardwood	Δ IIC 21	SS-3B
3mm	6" concrete slab with no ceiling below	Double Glued Engineered Hardwood	Δ IIC 19	SS-3C
3mm	6" concrete slab with with ceiling below	Double Glued Engineered Hardwood	IIC 60	SS-3D
6mm	Wood frame construction 2 x 16" - 24" centers, 5/8" T&G plywood w/ 1 1/2" lightweight concrete topping- batt insulation, RC-1 channel, 5/8" GWB	Floated Engineered Hardwood	IIC 57	SS-6A
6mm	6" concrete slab with no ceiling below	Floated Engineered Hardwood	Δ IIC 22	SS-6B
12mm	Wood frame construction 2 x 16" - 24" centers, 5/8" T&G plywood w/ 1 1/2" lightweight concrete topping- batt insulation, RC-1 channel, 5/8" GWB	Floated Engineered Hardwood	IIC 57	SS-12A
12mm	6" concrete slab with no ceiling below	Floated Engineered Hardwood	Δ IIC 23	SS-12B