UNDERLAYMENT SOUND RATINGS
FOR USE UNDER HARDWOOD, LAMINATE & ENGINEERED FLOORS
FOR USE UNDER LVT, LVP & RIGID CORE
UNDERSTANDING ACOUSTICS
IIC
Measures a floor/ceiling assembly’s resistance to transmission of structure-borne or impact noise such as footfall, or a chair dragging on the floor.
STC
Rates a partition’s or material’s ability to block airborne sound such as a television or people having a conversation.
ΔIIC
The acoustic performance gain between a bare concrete subfloor assembly and a full flooring assembly with underlayment.
UNDERSTANDING ACOUSTICS
IIC
Measures a floor/ceiling assembly’s resistance to transmission of structure-borne or impact noise such as footfall, or a chair dragging on the floor.
STC
Rates a partition’s or material’s ability to block airborne sound such as a television or people having a conversation.
ΔIIC
The acoustic performance gain between a bare concrete subfloor assembly and a full flooring assembly with underlayment.
WHY USE A FLOORING UNDERLAYMENT?
Compression Characteristics
help protect tongue and grooves
Adds R-Value
The capacity of a material to resist heat transfer
Improves Acoustic Performance
Through the floor impact noise (IIC)
Through the floor airborne noise (STC)
Performance gain using underlayment (ΔIIC)
Helps control MVTR
The passage of water vapor through a substance
Settle Floor Imperfections
Helps eliminate minor subfloor imperfections