Acoustic underlayment is critical for multi-level dwellings. When choosing, look for high STC ratings (airborne sound) and IIC ratings (footfall noise). Factors to consider include thickness, density, and material composition—such as rubber, cork, or high-density foam. Always check if the flooring manufacturer mandates a specific type of underlayment, as using an unapproved product can compromise the floor's locking mechanism or void the product's performance warranty regarding sound dampening.
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How do I select the right flooring underlayment for acoustic performance?
Select underlayment by evaluating the Sound Transmission Class (STC) and Impact Insulation Class (IIC) ratings. Higher ratings indicate superior sound dampening. Ensure the material is compatible with your flooring type and specific subfloor, such as concrete or wood joist.