How many decibels does dynamat reduce? | ASLONG Guide

How Many Decibels Does Dynamat Reduce?

Sound insulation professionals often need reliable data on the effectiveness of leading materials. One frequent question is, How many decibels does Dynamat reduce? This article explores measured performance, methods, and material comparison facts to guide your projects.

Key Facts: What Is Dynamat?

- Dynamat is a High Quality sound deadening material commonly used in automotive, marine, and industrial settings.

- It is primarily butyl-based with an aluminum constraining layer, designed to reduce structure-borne and airborne noise.

- Targeted applications: vehicle panels, doors, roofs, floors, and industrial machinery housings.

Dynamat’s Decibel Reduction Performance

- Typical reduction range: Dynamat can reduce noise by 3 to 6 dB, often cited as an average of 4 dB in real-world use cases ((https://www.dynamat.com/), (https://www.carsoundproofing.net/)).

- Test conditions matter: Results depend on the vehicle/environment, panel type, application area, and installation quality.

- Contextual measurement: A 3 dB reduction equates to a 50% reduction in sound energy, and a 10 dB reduction is perceived by the human ear as approximately halving the loudness.

Supporting Data and Sources

- Manufacturer claim: Dynamat’s official data reports up to 9.6 dB reduction in specific resonance frequencies (e.g., automobile door panels), with most applications averaging less.

- Independent evaluations: Studies by CarAudioNow and AutoSound have published repeatable results between 2-5 dB SPL reduction in automotive cabin sound pressure level under controlled tests.

- Industry norms: Comparable butyl/aluminum sound deadeners, including Hushmat and Second Skin Damplifier Pro, also show 3-6 dB average reductions under similar testing parameters.

Factors Impacting Decibel Reduction

- Surface coverage: Full coverage yields the highest dB reduction; partial coverage reduces effectiveness.

- Panel thickness and resonance: Thinner, more resonant panels benefit most.

- Adjacent material layers: Combining Dynamat with closed-cell foam (e.g., Dynaliner) can give incremental improvements.

Applications & Recommendations for Professionals

- Automotive: Strategic application on floors, doors, and roofs for passenger comfort.

- OEM and retrofits: Upgrade or retrofit in buses, trains, HVAC, and machinery for compliance with noise regulations.

- Marine and industrial: Damps vibration in hulls, enclosures, and machinery housings.

Authority and Compliance

- Test standards: Performance is supported by ISO 140 and ASTM E90 sound transmission loss testing protocols.

- Certifications: LEED, RoHS, and REACH where products are formulated to meet green and safety standards.

Quick Reference: How Many Decibels Does Dynamat Reduce?

- Typical dB reduction: 3-6 dB (average 4 dB)

- Best use scenarios: Large, flat metal panels with high resonance

- Comparables: Hushmat, Noico, Second Skin—similar dB reduction

- Industry context: Effective but most efficient when paired with additional sound-absorbing layers

For further expertise on material selection, application, and testing methods, contact the team at ASLONG. Ensuring the right choice of sound insulation materials is crucial for project success.

*References: (https://www.dynamat.com/), (https://www.carsoundproofing.net/), (https://www.caraudionow.com/best-automotive-sound-deadening-materials/)*